CN213017542U - Chain anti-disengaging device and turnover system - Google Patents
Chain anti-disengaging device and turnover system Download PDFInfo
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- CN213017542U CN213017542U CN202022003475.XU CN202022003475U CN213017542U CN 213017542 U CN213017542 U CN 213017542U CN 202022003475 U CN202022003475 U CN 202022003475U CN 213017542 U CN213017542 U CN 213017542U
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- sprocket
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Abstract
The utility model provides a chain anti-drop device and a turnover system, which are arranged on a chain transmission mechanism; the method comprises the following steps: the chain wheel assembly comprises a retainer and two symmetrically arranged chain wheel assemblies; the retainer is rotatably connected with a gear of the chain transmission mechanism; both sprocket assemblies include: a sprocket shaft and a sprocket; the chain wheel shaft is rotatably connected with the retainer; the chain wheels are fixed on two chain wheel shafts, and the two chain wheels are positioned on one side of the retainer. The chain transmission device has the advantages that the number of the sections of the chain winding-in device and the number of the sections of the chain winding-out device are always equal, the chain is always tightly attached to the transmission gear, and even if the upper chain is completely loosened, the chain cannot be separated from the device, so that the safe and reliable transmission of the chain transmission is realized.
Description
Technical Field
The utility model relates to a chain anticreep device and upset system.
Background
The traditional chain anti-dropping is usually ensured in a chain tensioning mode, the center distance between a driving chain wheel and a driven chain wheel is fixed and unique, and a tensioning device is arranged for preventing the chain from dropping or facilitating installation, so that the chain is always along a closed curve and tangent to a pitch circle of the chain wheel. However, in the case that the center distance changes with time, the spring-like elastic tension is usually added on the basis of the original tension. However, for the situation that the center distance is greatly changed or the driven sprocket swings or bounces, especially the situation that the driven sprocket cannot be fixed, namely the center distance between the driving sprocket and the driven sprocket changes at any time due to movement or bounces, the conventional tensioning mode cannot meet the requirement of tensioning and anti-dropping.
SUMMERY OF THE UTILITY MODEL
The utility model provides a chain anticreep device and upset system ensures that the number of sections of chain winding-in device and the number of sections of winding-out device are always equal, the chain is always closely attached to the transmission gear, even if the upper chain is completely loosened, the chain can not be separated from the device, thereby realizing the safe and reliable transmission of chain transmission; to overcome the disadvantages of the prior art.
The utility model provides a chain anti-drop device, which is arranged on a chain transmission mechanism; the method comprises the following steps: a cage 551 and two symmetrically disposed sprocket assemblies 552; the retainer 551 is rotatably connected with a gear of the chain transmission mechanism; both sprocket assemblies 552 include: a sprocket shaft 552a and a sprocket 552 b; the sprocket shaft 552a is rotatably connected with the holder 551; the sprockets 552b are fixed to two sprocket shafts 552a, and the two sprockets 552b are located on one side of the holder 551.
Further, the utility model provides a chain anticreep device can also have such characteristic: the chain of the chain drive engages with one sprocket 552b, then with the gear of the chain drive, and then with the other sprocket 552 b.
Further, the utility model provides a chain anticreep device can also have such characteristic: the distance between the two sprockets 552b and the position where the chain 52 engages is equal to the distance between the two sides of the magnet-flipped driven pulley 54 and the position where the chain 52 engages.
Further, the utility model provides a chain anticreep device can also have such characteristic: also included is a transition gear assembly 553; both ends of the sprocket shaft 552a penetrate both sides of the holder 551; transition gear assembly 553 includes: a transition gear shaft 553a and a transition gear 553 b; the transition gear shaft 553a is rotatably connected with the holder 551; the transition gear 553b is fixed to the transition gear shaft 553 a; both sprocket assemblies 552 also include a synchronizing gear 552 c; the synchronizing gear 552c is fixedly connected with the sprocket shaft 552 a; a transition gear shaft 553a and two synchronizing gears 552c are located at the other side of the holder 551; the transition gear shaft 553a is located intermediate the two synchronizing gears 552c, and is engaged with the two synchronizing gears 552c, respectively.
Further, the utility model provides a chain anticreep device can also have such characteristic: the number of teeth and the module of the transition gear 553b and the synchronizing gear 552c are the same.
Further, the utility model provides a chain anticreep device can also have such characteristic: the sprocket assembly 552 further includes two chain limiting portions 554; the limit plates 554a are fixed at two ends of the retainer 551; the two stopper plates 554a are respectively adjacent to the circumferences of the two sprockets 552 b.
Further, the utility model provides a chain anticreep device can also have such characteristic: the chain stopper 554 further includes a fixing plate 554 b; the limiting plate 554a and the fixing plate 554b are perpendicular to each other and are L-shaped; one ends of the two sprocket shafts 552a also pass through the fixing plate 554b and are rotatably connected to the fixing plate 554 b.
Further, the utility model provides a chain anticreep device can also have such characteristic: the chain of the chain transmission mechanism passes between one sprocket 552b and the stopper plate 554 a.
Additionally, the utility model provides a turnover system, include: the chain anti-falling device comprises two chain transmission mechanisms, two chain anti-falling devices and a turnover piece; the two chain transmission mechanisms and the two chain anti-falling devices are symmetrically arranged on two sides of the turnover piece; the chain drive mechanism includes a gear and a chain 52; two sides of the turnover piece are fixed on the two gears; the two chains 52 are respectively engaged with one sprocket 552b on the side, engaged with a gear, and engaged with the other sprocket 552b on the side.
Further, the utility model provides a turnover system can also have such characteristic: the flip-over member is an electromagnet 56.
Drawings
Fig. 1 is a schematic structural diagram of a special rotary turnover lifting appliance for profiles in an embodiment.
Fig. 2 is a schematic structural view of the flip-flop electromagnet system in the embodiment.
Fig. 3 is a side perspective view of the special rotary turning hanger for the section bar in the embodiment.
Fig. 4 is another side perspective view of the special rotary turning sling for the section bar in the embodiment.
Fig. 5 is an exploded view of the sprocket assembly in the example.
Fig. 6 is an exploded view of the transition gear assembly of the embodiment.
Fig. 7 is a schematic structural view of the rotating device and the upper rack in the embodiment.
Fig. 8 is a schematic structural view of the rotating device and the intermediate rack in the embodiment.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments.
Examples
In this embodiment, a section bar special use is rotatory upset hoist includes: go up stores pylon 1, rotary device 2, middle stores pylon 3, lower stores pylon 4, a plurality of upset electromagnet system 5.
In this embodiment, the center of the upper hanger 1 is provided with a cable guide frame 11, and when the suspension length of the power supply cable of the hanger is changed, the power supply cable is retracted or placed in the cable guide frame 11 in a fixed direction. The power supply cable is connected to the junction box of the upper hanging beam 1, and the cable is led out from the junction box to provide electric energy for the rotating device 2 and the overturning electromagnet system 5. The upper hanging rack 1 is also provided with 4 groups of pulleys 12, and the 4 groups of pulleys 12 are distributed in a square or rectangular shape by taking the central position of the upper hanging rack 1 as the center. The opening size of the pulley 12 is matched with the arrangement of the travelling crane. The connection between the whole lifting appliance and the travelling crane is realized through the connection between the steel wire rope wound on the pulley 12 and the travelling crane, and the whole lifting appliance can be driven to ascend and descend.
The rotating device 2 in the present embodiment includes: two rotary drives 21, two slewing drive pinions are hidden by the upper pylon and an external toothed slewing bearing 23. The rotary drive 21 can adopt a motor-driven vertical reduction gearbox, and is symmetrically fixed on two sides of the upper hanging rack 1, and two rotary drive pinions are respectively fixed on output shafts of the two rotary drives 21. An inner ring 23a of the external tooth type slewing bearing 23 is fixedly connected with the upper hanging rack 1 through a high-strength bolt, and an external gear ring 23b of the external tooth type slewing bearing 23 is fixedly connected with the intermediate hanging rack 3 through a high-strength bolt. The inner ring 23a and the outer ring gear 23b of the outer tooth type slewing bearing 23 are sleeved together by balls. The rotary drive 21 drives the rotary drive to further drive the external gear ring 23b of the external gear type rotary support 23 to rotate, so as to drive the intermediate hanging rack 3 to do rotary motion; the rotation between the upper hanger 1 and the intermediate hanger 3 is realized.
The upper end of the lower hanging rack 4 is fixedly connected with the middle hanging rack 3 by adopting a pin. In this embodiment, the lower hanger 4 is a truss girder structure, and is formed by riveting or welding profile steel and steel plates.
A plurality of turning electromagnet systems 5 are arranged below the lower hanging rack 4. Each flip-flop electromagnet system 5 includes: two magnet turnover driving wheels 51, two chains 52, two magnet turnover driven wheels 54 and an electromagnet 56.
Two magnet turnover driving wheels 51, two chains 52, two magnet turnover driven wheels 54 and two chain anti-dropping devices 55 are symmetrically arranged on two sides of the electromagnet 56.
The two chains 52 are respectively sleeved on the magnet turnover driving wheel 51 and the two magnet turnover driven wheels 54 on the corresponding sides and are respectively meshed with the two. The two ends of the electromagnet 56 are fixedly connected with the two magnet turnover driven wheels 54 respectively, and can turn over along with the rotation of the magnet turnover driven wheels 54. The cross-section of the electromagnet 56 may be any polygonal shape.
In the present exemplary embodiment, the tumble magnet system 5 has a uniform drive 57 and a drive shaft 58. The driving device 57 is fixed on the lower hanging rack 4, the transmission shaft 58 is rotatably connected with the lower hanging rack 4, and the driving device 57 drives the transmission shaft 58 to rotate. All the magnet tumble drivers 51 are fixed to the transmission shaft 58 and rotate with it. Since the drive shaft 58 is relatively long, a support bearing can be provided for the drive shaft 58 at the location where the magnet tumble drive wheel 51 is located. Of course, the turning electromagnet system 5 may also be provided with a power drive to respectively drive the magnet turning driving wheel 51 to rotate.
In this embodiment, the turning electromagnet system 5 further includes two chain anti-dropping devices 55. The chain escape prevention device 55 includes: a cage 551, two sprocket assemblies 552, a transition gear assembly 553, and two chain stops 554. The entire chain escape prevention device 55 is symmetrical about the axis of the magnet-flipped follower 54.
The lower end of the retainer 551 is annular and fitted over the shaft of the magnet-inverting follower 54, and the two are rotatable relative to each other.
The sprocket assembly 552 basically includes: a sprocket shaft 552a, a sprocket 552b, and a synchronizing gear 552 c.
Both ends of the sprocket shaft 552a penetrate both sides of the holder 551 and are rotatably connected to the holder 551. The sprocket 552b is fixed to one end of the sprocket shaft 552a by a key 552d and a snap spring 552 e. The synchronizing gear 552c is fixed to the other end of the sprocket shaft 552a by a key 552f and a snap spring 552 g. In this embodiment, the distance between the two sprockets 552b and the position where the chain 52 is engaged is equal to the distance between the two sides of the magnet-flipping driven wheel 54 and the position where the chain 52 is engaged, so that the chain 52 vertically enters and exits the magnet-flipping driven wheel 54, thereby ensuring smooth and unobstructed chain transmission.
In this embodiment, the sprocket 552b and the synchronizing gear 552c are respectively located on both sides of the holder 551. Of course, the same function can be achieved with the sprocket 552b and the synchronizing gear 552c on the same side of the holder 551.
In this embodiment, the two chain stoppers 554 include: the limiting plate 554a and the fixing plate 554b are perpendicular to each other and are L-shaped. The stopper plates 554a are fixed to both ends of the holder 551. The two stopper plates 554a are respectively adjacent to the circumferences of the two sprockets 552 b. The two sprocket shafts 552a are also threaded at one end to engage nuts 552h, respectively, after passing through the fixing plate 554 b. A spacer 552i is further provided between the sprocket 552b and the fixing plate 554b to ensure smooth relative rotation of the sprocket shaft 552a and the fixing plate 554 b. Of course, the fixing plate 554b may be connected together as a single body.
The transition gear assembly 553 basically includes: a transition gear shaft 553a and a transition gear 553 b. After the transition gear shaft 553a passes through the holder 551, the rotatable connection with the holder 551 is realized by the clamp spring 553 c. The transition gear 553b is fixed to the transition gear shaft 553a by a key 553d and a circlip 553 e. The transition gear 553b is located in the middle of the two synchronizing gears 552c, and is engaged with the two synchronizing gears 552c, respectively. In the present embodiment, the number of teeth and the module of the transition gear 553b and the synchronizing gear 552c are the same.
The one-side chain 52 passes between the one sprocket 552b and the stopper plate 554a on the one side, and the sprocket 552b is engaged with the magnet-flipping driven wheel 54 on the one side, passes between the other sprocket 552b on the one side and the stopper plate 554a, and the sprocket 552b is engaged with the magnet-flipping driving wheel 51 on the one side. The two sprockets 552b are outside the holder 551, and inside the holder 551 are a transition gear 553b and a synchronizing gear 552c engaged with the transition gear 553b and the synchronizing gear 552c, wherein the sprocket 552b and the synchronizing gear 552c on the same sprocket assembly 552 rotate synchronously, so that when the sprocket 552b on one side is driven by the chain to rotate, the sprocket shaft 552a and the synchronizing gear 552c are driven to rotate synchronously, the synchronizing gear 552c is engaged with the transition gear 553b, the transition gear 553b is engaged with the synchronizing gear 552c on the other side, and the synchronizing gear 552c is used for rigidly driving the sprocket shaft 552a and the sprocket 552b to rotate, as described above, when the sprocket 552b on one side winds how many racks, the same number of racks are wound from the sprocket 552b on the other side. Between the side sprockets 552b on the driven pulley 54 side, a closed chain of constant length is formed, ensuring that the portion of the chain does not come loose.
In general, the center of the driving pulley is relatively fixed, and the position of the driven pulley is changed as needed in some cases, so it is common that the chain run-off preventing device 55 is disposed at the position of the driven pulley. In this particular structure, the chain anti-slip device 55 can be disposed at the position of the driving wheel.
The working process of the special rotary turning hanger for the section bar comprises the following steps:
the special rotary turning lifting appliance for the section bars is in an initial state with a certain height, and the pre-lifted section bars are randomly placed.
When connecting driving and 12 wire ropes of pulley and transferring the special rotatory upset hoist of section bar, rotary device 2 will descend stores pylon 4 to the appointed angle of estimating, and upset electromagnet system 5 overturns all electro-magnets 56 to estimating the angle. When the electromagnet 56 is close to the hung section steel, the rotation angle and the turning angle of the special rotary turning hanger for the section steel are accurately adjusted to be feasible angles, the special rotary turning hanger for the section steel continuously descends until the adsorption surface of the electromagnet 56 is attached to the adsorbed surface of the section steel, the electromagnet 56 is electrified, and the hung section steel is adsorbed.
The special rotary turning lifting appliance for the section bars is turned back and moves to an unloading position along with the traveling crane.
Next, the electromagnet 56 and the adsorbed profile rotate the lifting appliance and turn the electromagnet 56 again according to the actual placing requirement of the profile placing rack, when the profile is adjusted to a proper angle, the profile continuously descends until the hanging chain 52 of the electromagnet 56 is basically not stressed any more, the electromagnet 56 is powered off, and the profile is lifted to a designated position.
And finally, the special rotary turning lifting appliance for the section bars is turned back to be right and moves to the starting position of the next cycle along with the travelling crane.
When any section bar or part is lifted or placed, the adsorption surface of the electromagnet is not parallel to the pre-adsorption surface of the section bar or the welding part, or the adsorption surface of the electromagnet is not parallel to the placing plane after the electromagnet adsorbs the section bar or the welding part, and the section bar or the part is stably adsorbed or desorbed by turning the electromagnet.
The embodiments described above are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Claims (10)
1. A chain anti-drop device is arranged on a chain transmission mechanism; the method is characterized in that: comprises a retainer (551) and two sprocket wheel assemblies (552) which are symmetrically arranged;
wherein, the retainer (551) is rotatably connected with a gear of the chain transmission mechanism;
both sprocket assemblies (552) include: a sprocket shaft (552a) and a sprocket (552 b);
the sprocket shaft (552a) is rotatably connected with the retainer (551);
the sprockets (552b) are fixed to two sprocket shafts (552a), and the two sprockets (552b) are located on one side of the cage (551).
2. The chain run-off preventing device of claim 1, wherein:
wherein, the chain of the chain transmission mechanism is meshed with one chain wheel (552b), then meshed with the gear of the chain transmission mechanism, and then meshed with the other chain wheel (552 b).
3. The chain run-off preventing device of claim 2, wherein:
the distance between the two chain wheels (552b) and the meshing position of the chain (52) is equal to the distance between the two sides of the magnet turnover driven wheel (54) and the meshing position of the chain (52).
4. The chain run-off preventing device of claim 1, wherein:
wherein, also include the transition gear assembly (553);
both ends of the sprocket shaft (552a) penetrate both sides of the retainer (551);
the transition gear assembly (553) includes: a transition gear shaft (553a) and a transition gear (553 b); the transition gear shaft (553a) is rotatably connected with the retainer (551); the transition gear (553b) is fixed on the transition gear shaft (553 a);
the two sprocket assemblies (552) further comprise synchronizing gears (552 c); the synchronous gear (552c) is fixedly connected with the chain wheel shaft (552 a);
the transition gear shaft (553a) and the two synchronous gears (552c) are positioned at the other side of the retainer (551);
a transition gear shaft (553a) is located between the two synchronizing gears (552c) and is engaged with the two synchronizing gears (552c), respectively.
5. The chain run-off preventing device according to claim 4, wherein:
the transition gear 553b and the synchronizing gear 552c have the same number of teeth and the same module.
6. The chain run-off preventing device of claim 1, wherein:
wherein the sprocket assembly (552) further comprises two chain limiting parts (554);
limiting plates (554a) are fixed at two ends of the retainer (551); the two stopper plates (554a) are respectively adjacent to the circumferences of the two sprockets (552 b).
7. The chain run-off preventing device of claim 6, wherein:
wherein, the chain limiting part (554) also comprises a fixing plate (554 b);
the limiting plate (554a) and the fixing plate (554b) are perpendicular to each other and are L-shaped;
one ends of the two sprocket shafts (552a) also penetrate through the fixing plate (554b) and are rotatably connected with the fixing plate (554 b).
8. The chain run-off preventing device of claim 6, wherein:
wherein a chain of the chain transmission mechanism passes between one sprocket (552b) and the stopper plate (554 a).
9. A flipping system, characterized by:
the chain anti-dropping mechanism comprises two chain transmission mechanisms, two chain anti-dropping devices as claimed in any one of claims 1 to 6 and a turnover piece;
the two chain transmission mechanisms and the two chain anti-falling devices are symmetrically arranged on two sides of the turnover piece;
the chain transmission mechanism comprises a gear and a chain (52);
two sides of the turnover piece are fixed on the two gears;
the two chains (52) are respectively meshed with one sprocket (552b) on the side, then meshed with the gear, and then meshed with the other sprocket (552b) on the side.
10. The flipping system of claim 9, wherein:
wherein, the overturning part is an electromagnet (56).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022003475.XU CN213017542U (en) | 2020-09-14 | 2020-09-14 | Chain anti-disengaging device and turnover system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022003475.XU CN213017542U (en) | 2020-09-14 | 2020-09-14 | Chain anti-disengaging device and turnover system |
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| Publication Number | Publication Date |
|---|---|
| CN213017542U true CN213017542U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022003475.XU Active CN213017542U (en) | 2020-09-14 | 2020-09-14 | Chain anti-disengaging device and turnover system |
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| CN (1) | CN213017542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111998046A (en) * | 2020-09-14 | 2020-11-27 | 中船第九设计研究院工程有限公司 | Chain anti-falling device and application |
-
2020
- 2020-09-14 CN CN202022003475.XU patent/CN213017542U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111998046A (en) * | 2020-09-14 | 2020-11-27 | 中船第九设计研究院工程有限公司 | Chain anti-falling device and application |
| CN111998046B (en) * | 2020-09-14 | 2024-02-23 | 中船第九设计研究院工程有限公司 | Chain anti-drop device and tilting system |
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