Novel middle oil cylinder chain wheel for crane

Abstract

The utility model provides a novel middle oil cylinder chain wheel for a crane, which relates to the technical field of oil cylinder chain wheels and comprises a chain wheel body, a mounting hole, a connecting shaft, teeth, a tooth groove, an oil groove, a connecting groove and a lubricating component. During use, the teeth and the chain are meshed together, a chain pin on the chain is placed in the tooth groove, during operation, when the conical block is attached to the chain pin, the conical block moves towards the interior of the connecting pipe and extrudes the spring, the conical block makes contact with lubricating oil in the connecting pipe along with movement of the conical block, and when the chain pin leaves the conical block, the conical block moves towards the interior of the connecting pipe and extrudes the spring. Under the action of the spring, the conical block is reset, the conical block with the lubricating oil on the outer surface is in contact with the other group of chain pins again, and the lubricating oil is brought into the outer surface of the other group of chain pins to form an effective lubricating layer, so that the problems that the abrasion speed is obviously increased under the condition that the chain wheel lacks enough lubrication, but the manual lubrication efficiency is relatively low and the service life is short are solved. And the long-term stable operation requirement is difficult to meet.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil cylinder chain wheel technical field especially relates to a new type oil cylinder chain wheel for crane. BACKGROUND

[0002] Crane is mainly used for vertical lifting and horizontal handling of heavy objects. Its application range is extremely wide, covering building sites, port loading and unloading, manufacturing and other important fields. Among the various driving modes of the crane, the oil cylinder chain wheel assembly plays a crucial role. The oil cylinder chain wheel is a hydraulic cylinder assembly integrated with a chain wheel structure, which skillfully converts the linear motion of the oil cylinder into rotary motion by using the chain, or realizes the synchronous control between multiple oil cylinders, so that the crane can more flexibly and efficiently complete complex lifting operations.

[0003] In actual use, the cooperation between the chain wheel and the chain is crucial, but it is also the most prone to wear. The continuous meshing of the chain wheel teeth and the chain will cause the gradual wear of the surface materials of the two, especially in the case of insufficient lubrication, the wear speed will significantly increase. Insufficient lubrication means that there is a lack of necessary protective layer between the chain wheel teeth and the chain, so that the metal is in direct contact, increasing the friction, thereby accelerating the wear rate of the two. Although manual lubrication can alleviate this problem to some extent, due to the inconvenience of operation and the difficulty in ensuring the frequency, its efficiency is relatively low, and it is difficult to meet the long-term stable operation requirements. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the defects existing in the prior art. The utility model provides a new type oil cylinder chain wheel for crane, which works with the device, thereby solving the problem that the wear speed of the chain wheel will significantly increase in the case of insufficient lubrication, but the efficiency of manual lubrication is relatively low, and it is difficult to meet the long-term stable operation requirements.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of a new type oil cylinder chain wheel for crane, which comprises a chain wheel body, an installation hole is formed at the center of the chain wheel body, a connecting shaft is arranged inside the installation hole, a tooth is arranged around the outer surface of the chain wheel body, a tooth groove is arranged between the teeth, an oil groove is formed at the top end of the chain wheel body, a connecting groove is formed inside the chain wheel body, a lubricating assembly is arranged inside the connecting groove, and the connecting groove is in communication with the oil groove.

[0006] The lubricating assembly comprises a connecting pipe arranged inside the connecting groove, a connecting circular plate fixedly connected inside the connecting pipe, a fixed circular plate movably arranged inside the connecting pipe, a taper block fixedly connected to one side of the fixed circular plate, and a spring fixedly connected between the fixed circular plate and the connecting circular plate, a through hole is formed in one side of the connecting circular plate, and the connecting pipe penetrates through the tooth groove.

[0007] Further, the oil tank top is provided with a cover plate, the cover plate top is provided with an oil inlet hole, the oil inlet hole is communicated with the oil tank, and the outer surface of the oil inlet hole is movably connected with a sealing cover.

[0008] Further, the oil tank top is provided with a cover plate, the cover plate top is provided with an oil inlet hole, the oil inlet hole is communicated with the oil tank, and the outer surface of the oil inlet hole is movably connected with a sealing cover.

[0009] Further, the oil tank top is provided with a cover plate, the cover plate top is provided with an oil inlet hole, the oil inlet hole is communicated with the oil tank, and the outer surface of the oil inlet hole is movably connected with a sealing cover.

[0010] Further, the oil tank top is provided with a cover plate, the cover plate top is provided with an oil inlet hole, the oil inlet hole is communicated with the oil tank, and the outer surface of the oil inlet hole is movably connected with a sealing cover.

[0011] Further, the oil tank top is provided with a cover plate, the cover plate top is provided with an oil inlet hole, the oil inlet hole is communicated with the oil tank, and the outer surface of the oil inlet hole is movably connected with a sealing cover.

[0012] Compared with the prior art, the beneficial effects of the utility model include: in use, first, the chain is placed on the outer wall of the sprocket body, the teeth are engaged together with the chain, and the chain pin on the chain is placed in the tooth groove, when the taper block and the chain pin are in contact during operation, due to the pressure between the two, the taper block moves to the inside of the connecting pipe and presses the spring, with the movement of the taper block, it contacts the lubricating oil in the connecting pipe, when the chain pin leaves the taper block, under the action of the spring, the taper block resets, at this time, the taper block with the lubricating oil on the outer surface recontacts another group of chain pins, and the lubricating oil is brought to the outer surface of another group of chain pins to form an effective lubricating layer, by continuously providing lubricating oil between the chain and the sprocket contact surface, the friction coefficient of the two can be significantly reduced, the direct metal contact is reduced, the wear speed is effectively slowed down, the service life is prolonged, and the problem that the wear speed of the sprocket is significantly accelerated in the case of lack of sufficient lubrication, but the manual lubrication efficiency is relatively low and it is difficult to meet the long-term stable operation demand is solved. BRIEF DESCRIPTION OF DRAWINGS

[0013] The disclosure of the utility model will be explained with reference to the drawings. It should be understood that the drawings are only for illustrative purposes, and are not intended to limit the protection scope of the utility model. In the drawings, the same reference signs are used to refer to the same parts. Among them:

[0014] Figure 1 The overall structure of the novel oil cylinder sprocket for the crane is schematically shown Figure One ;

[0015] Figure 2The overall structure schematic diagram of the novel oil cylinder chain wheel for the crane is shown schematically according to an embodiment of the utility model Figure Two ;

[0016] Figure 3 The oil groove and cover plate structure schematic diagram of the novel oil cylinder chain wheel for the crane is shown schematically according to an embodiment of the utility model

[0017] Figure 4 The cover plate structure schematic diagram of the novel oil cylinder chain wheel for the crane is shown schematically according to an embodiment of the utility model

[0018] Figure 5 The internal structure schematic diagram of the chain wheel body of the novel oil cylinder chain wheel for the crane is shown schematically according to an embodiment of the utility model

[0019] Figure 6 The lubricating assembly structure schematic diagram of the novel oil cylinder chain wheel for the crane is shown schematically according to an embodiment of the utility model.

[0020] Reference signs in the drawing: 1, chain wheel body; 11, mounting hole; 111, first limiting groove; 112, first limiting block; 12, oil groove; 121, mounting ring; 1211, mounting groove; 13, connecting groove; 2, connecting shaft; 21, second limiting block; 22, second limiting groove; 3, tooth; 31, cavity; 311, sound-absorbing cotton; 4, tooth groove; 5, cover plate; 51, locking bolt; 52, oil inlet hole; 521, sealing cover; 53, mounting block; 531, sealing gasket; 6, lubricating assembly; 61, connecting pipe; 62, connecting round plate; 621, through hole; 63, spring; 64, fixed round plate; 65, taper block. DETAILED DESCRIPTION

[0021] It is easy to understand that according to the technical scheme of the utility model, a person skilled in the art can propose a plurality of structure modes and implementation modes which can be replaced with each other without changing the essential spirit of the utility model. Therefore, the following specific embodiments and drawings are only exemplary description of the technical scheme of the utility model, and should not be regarded as the whole of the utility model or regarded as the limitation or restriction of the technical scheme of the utility model.

[0022] According to an embodiment of the utility model Figures 1-6The utility model discloses a new type middle oil cylinder chain wheel for crane, including sprocket body 1, the center of sprocket body 1 is equipped with mounting hole 11, be provided with connecting shaft 2 in mounting hole 11, the outer surface of sprocket body 1 is provided with tooth 3 around, be provided with tooth gap 4 between tooth 3, sprocket body 1 top is equipped with oil groove 12, be equipped with connecting groove 13 in sprocket body 1, connecting groove 13 is provided with lubricating assembly 6 in, and connecting groove 13 is linked together with oil groove 12.

[0023] In the embodiment, the lubricating assembly 6 includes a connecting pipe 61 installed in the connecting groove 13, a connecting circular plate 62 fixedly connected in the connecting pipe 61, a fixed circular plate 64 movably arranged in the connecting pipe 61, a taper block 65 fixedly connected on one side of the fixed circular plate 64, and a spring 63 fixedly connected between the fixed circular plate 64 and the connecting circular plate 62. A through opening 621 is formed on one side of the connecting circular plate 62, and the connecting pipe 61 penetrates through the tooth gap 4. The oil groove 12 is used for placing lubricating oil. When in use, first, the chain is placed on the outer wall of the sprocket body 1 so that the teeth 3 are engaged with the chain, and the chain pin on the chain is placed in the tooth gap 4. When running, when the taper block 65 is in contact with the chain pin, due to the pressure between them, the taper block 65 moves to the inside of the connecting pipe 61 and presses the spring 63. With the movement of the taper block 65, it contacts the lubricating oil in the connecting pipe 61. When the chain pin moves away from the taper block 65, the taper block 65 is reset under the action of the spring 63. At this time, the taper block 65 with lubricating oil on the outer surface recontacts another group of chain pins, bringing lubricating oil to the outer surface of another group of chain pins to form an effective lubricating layer. By continuously providing lubricating oil between the contact surface of the chain and the sprocket, the friction coefficient between the two can be significantly reduced, the direct metal-to-metal contact is reduced, the wear rate is effectively slowed down, and the service life is prolonged.

[0024] A cover plate 5 is arranged at the top end of the oil groove 12. An oil inlet hole 52 is formed at the top end of the cover plate 5 and is in communication with the oil groove 12. A sealing cover 521 is movably connected to the outer surface of the oil inlet hole 52. The cover plate 5 and the sealing cover 521 can prevent foreign matters such as dust from entering the oil groove 12, so as to maintain the purity of the lubricating oil, prolong the service life of the lubricating oil, and ensure the lubricating effect. After the sealing cover 521 is opened, the lubricating oil can be directly added to the inside of the oil groove 12 through the oil inlet hole 52. The sealing cover 521 is movably connected to the oil inlet hole 52, so as to effectively close the oil inlet hole 52 when no lubricating oil is added.

[0025] An installation ring 121 is fixedly connected to the inner wall of the oil groove 12. A locking bolt 51 is threadedly connected between the cover plate 5 and the installation ring 121. The locking bolt 51 firmly fixes the cover plate 5 at the top end of the installation ring 121, so as to ensure the sealing between the cover plate 5 and the oil groove 12. When it is necessary to clean and maintain the inside of the oil groove 12, the locking bolt 51 can be unscrewed to open the cover plate 5, which is simple and convenient.

[0026] The bottom end of the mounting ring 121 is provided with a mounting groove 1211, and the bottom end of the cover plate 5 is fixedly connected with a mounting block 53. The bottom end of the mounting block 53 is fixedly connected with a sealing gasket 531, and the mounting groove 1211 is correspondingly arranged with the mounting block 53. The sealing gasket 531 is located at the bottom end of the mounting block 53 and tightly matches with the mounting groove 1211, thereby forming a sealing barrier to effectively prevent the lubricating oil from leaking from the gap between the cover plate 5 and the mounting ring 121. Meanwhile, the cooperation between the mounting groove 1211 and the mounting block 53 makes the cover plate 5 more stable, thereby further reducing the risk of leakage.

[0027] The inner wall of the mounting hole 11 is provided with first limiting blocks 112, and the first limiting blocks 112 are provided with first limiting grooves 111. The outer surface of the connecting shaft 2 is provided with second limiting blocks 21, and the second limiting blocks 21 are provided with second limiting grooves 22. The first limiting blocks 112 are correspondingly arranged with the second limiting grooves 22, and the second limiting blocks 21 are correspondingly arranged with the first limiting grooves 111. The first limiting blocks 112 are embedded in the second limiting grooves 22, and the second limiting blocks 21 are embedded in the first limiting grooves 111, thereby forming a bidirectional limiting structure. The bidirectional limiting structure can effectively limit the axial movement of the connecting shaft 2 in the mounting hole 11, avoid the sliding caused by the vibration or load change during the operation of the equipment, and ensure that the position of the connecting shaft 2 in the mounting hole 11 is always fixed, thereby improving the overall operation stability of the chain wheel body 1.

[0028] The inside of the tooth 3 is provided with a cavity 31, and the inside of the cavity 31 is provided with sound-absorbing cotton 311. The sound-absorbing cotton 311 is a material with good sound absorption performance, which can effectively absorb the vibration energy generated by the chain wheel body 1 during operation, reduce the propagation of vibration to the surrounding environment, and thereby significantly reduce the noise level. When the chain engages with the tooth 3, a certain impact and friction sound will be generated. The sound-absorbing cotton 311 can block and absorb these sound waves through its porous structure, reduce the sound directly propagating outward, and achieve the effect of noise reduction.

[0029] In use, first, the chain is placed on the outer wall of the chain wheel body 1, the teeth 3 are engaged with the chain, and the chain pin on the chain is placed in the tooth groove 4. When running, when the taper block 65 is in contact with the chain pin, due to the pressure between the two, the taper block 65 moves to the inside of the connecting pipe 61 and presses the spring 63. With the movement of the taper block 65, it contacts the lubricating oil in the connecting pipe 61. When the chain pin leaves the taper block 65, the taper block 65 is reset under the action of the spring 63. At this time, the taper block 65 with the outer surface of the lubricating oil recontacts another group of chain pins to bring the lubricating oil to the outer surface of another group of chain pins to form an effective lubricating layer. By continuously providing lubricating oil between the contact surface of the chain and the chain wheel, the friction coefficient of the two can be significantly reduced, the direct metal contact is reduced, and the wear speed is effectively slowed down, thereby prolonging the service life. When the lubricating oil is insufficient, the sealing cover 521 is opened, and the lubricating oil can be directly added to the oil groove 12 through the oil inlet hole 52.

[0030] The technical scope of the utility model is not only limited to the content in the above description, and those skilled in the art can deform and modify the above embodiment without departing from the technical thought of the utility model, and these deformations and modifications should all belong to the protection scope of the utility model.

Claims

1. A new type of chain wheel for oil cylinder of crane, characterized in that: The chain wheel body is provided with a mounting hole in the center, a connecting shaft is arranged inside the mounting hole, a plurality of teeth are arranged around the outer surface of the chain wheel body, a plurality of tooth grooves are arranged between the teeth, an oil groove is arranged at the top end of the chain wheel body, a connecting groove is arranged inside the chain wheel body, a lubricating assembly is arranged inside the connecting groove, and the connecting groove is in communication with the oil groove. The lubricating assembly comprises a connecting pipe arranged inside the connecting groove, a connecting disc fixedly connected inside the connecting pipe, a fixed disc movably arranged inside the connecting pipe, a taper block fixedly connected to one side of the fixed disc, and a spring fixedly connected between the fixed disc and the connecting disc, one side of the connecting disc is provided with an opening, and the connecting pipe penetrates through the tooth groove.

2. The new type of oil cylinder chain wheel for crane according to claim 1, characterized in that: The oil groove is provided with a cover plate at the top end, the cover plate is provided with an oil inlet hole at the top end, the oil inlet hole is in communication with the oil groove, and the outer surface of the oil inlet hole is movably connected with a sealing cover.

3. The new type of oil cylinder chain wheel for crane according to claim 2, characterized in that: The inner wall of the oil groove is fixedly connected with a mounting ring, and the cover plate and the mounting ring are threadedly connected with a locking bolt.

4. The new type of oil cylinder chain wheel for crane according to claim 3, characterized in that: The bottom end of the mounting ring is provided with a mounting groove, the bottom end of the cover plate is fixedly connected with a mounting block, the bottom end of the mounting block is fixedly connected with a sealing gasket, and the mounting groove and the mounting block are correspondingly arranged.

5. The novel oil cylinder chain wheel for cranes as claimed in claim 1, wherein: The inner wall of the mounting hole is provided with a first limiting block, the first limiting blocks are arranged between a first limiting groove, the outer surface of the connecting shaft is provided with a second limiting block, the second limiting blocks are arranged between a second limiting groove, the first limiting block and the second limiting groove are correspondingly arranged, and the second limiting block and the first limiting groove are correspondingly arranged.

6. The novel oil cylinder chain wheel for cranes as claimed in claim 1, wherein: The tooth is provided with a cavity inside, and the cavity is provided with sound-absorbing cotton inside.

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