Buoyancy type low-deflection high-reliability main shaft system of mud scraper

Abstract

The utility model discloses a mud scraper buoyancy type low-deflection high-reliability main shaft system which comprises a shaft body, a closed cavity is arranged in the shaft body, at least one first flange plate is arranged on the shaft body, at least one second flange plate is arranged at two ends of the shaft body, the first flange plate is used for connecting a chain towing wheel, and the second flange plate is used for connecting a chain towing wheel. According to the buoyancy type low-deflection high-reliability main shaft system of the mud scraper, the cavity is formed, so that the main shaft generates buoyancy to counteract gravity, bending deformation generated by gravity friction and self weight is reduced, and a chain towing wheel is conveniently connected through the first flange plate; key connection of the main shaft driving wheel and the driven wheel is replaced by second flange connection, axial movement of the main shaft driving the driven wheel is reduced, and chain disengaging is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of mud scrapers, and more specifically relates to a buoyancy-type low-flexure and high-reliability main shaft system for mud scrapers. Background Art

[0002] In the process of urban sewage treatment, the sedimentation tank is one of the basic equipment in the whole treatment process. It is mainly used to precipitate some sludge, sediment, etc. in sewage treatment, and such sediments need to be scraped off. Common sedimentation tanks also include various shapes, and the more common one is the rectangular sedimentation tank. For scraping equipment, the non-metallic chain scraper is one of the important scraping and slag skimming equipment for rectangular sedimentation tanks. The axial span of the transmission main shaft of the non-metallic chain scraper in the prior art is large and the weight is heavy. It is easily twisted and deformed by its own weight during use, which affects the stability of the chain drive and aggravates the bearing wear, reducing the service life. Utility Model Content

[0003] The purpose of the utility model is to provide a buoyancy-type, low-deflection, high-reliability main shaft system for a mud scraper in response to the deficiencies in the prior art, so as to solve the problem that the transmission main shaft of the non-metallic chain-type mud scraper in the prior art has a large axial span and a heavy weight, and is easily twisted and deformed due to its own weight during use, thereby affecting the stability of the chain drive and aggravating bearing wear, thereby reducing service life.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a buoyancy type low-deflection high-reliability main shaft system for a mud scraper, comprising:

[0005] The shaft body has a sealed cavity inside, the shaft body is provided with at least one first flange, and at least one second flange is provided at both ends of the shaft body, the first flange is used to connect the chain pulley, and the second flange is used to connect the driving wheel and the driven wheel of the main shaft.

[0006] Optionally, the main shaft includes a first shaft segment, and the first flange and the second shaft segment are coaxially arranged at two ends of the first shaft segment, and the radii of the first shaft segment and the second shaft segment are different.

[0007] Optionally, the radius of the first shaft segment is greater than the radius of the second shaft segment, the radius of the first flange is greater than the radius of the first shaft segment, one side of the first flange is connected to the end face of the first shaft segment, and a reinforcing rib is provided between the other side of the first flange and the outer periphery of the second shaft segment.

[0008] Optionally, the main shaft is sleeved with a two-piece bearing.

[0009] Optionally, the bearing is an ultra-high molecular weight polyethylene bearing.

[0010] Optionally, the cavity comprises at least one cylindrical chamber coaxial with the shaft body.

[0011] Optionally, a first cavity and a second cavity are respectively provided in the first shaft segment and the second shaft segment.

[0012] Optionally, the first cavity and the second cavity are connected to each other.

[0013] Optionally, the cavity comprises a plurality of chambers distributed circumferentially around the axis of the spindle.

[0014] Optionally, a bearing groove is provided at one end of the second shaft segment away from the first shaft segment.

[0015] The utility model provides a buoyancy type low-deflection high-reliability main shaft system for a mud scraper, and its beneficial effects are:

[0016] The scraper buoyancy type low deflection high reliability main shaft system sets a cavity to make the main shaft generate buoyancy to offset gravity, reduce the bending deformation caused by gravity friction and deadweight, conveniently connect the chain tug through the first flange, and connect the main shaft driving wheel and the driven wheel through the second flange instead of the key, thereby reducing the axial movement of the main shaft driving the driven wheel and avoiding chain derailment.

[0017] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0019] Figure 1 A schematic structural diagram of the shaft body of a buoyancy-type low-flexure high-reliability main shaft system for a mud scraper according to an embodiment of the utility model is shown.

[0020] Figure 2 The figure shows an assembly diagram of a buoyancy-type low-flexure high-reliability main shaft system for a mud scraper according to an embodiment of the utility model.

[0021] Description of reference numerals:

[0022] 1. First shaft section; 2. Second shaft section; 3. First flange; 4. Cavity; 5. Bearing groove. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0024] like Figure 1-2 As shown, a buoyancy type low deflection high reliability main shaft system for a mud scraper comprises:

[0025] The shaft body has a sealed cavity 4 inside, at least one first flange 3 is arranged on the shaft body, and at least one second flange 6 is arranged at both ends of the shaft body. The first flange 3 is used to connect the chain pulley, and the second flange is used to connect the driving wheel and the driven wheel of the main shaft.

[0026] Specifically, the cavity 4 is provided to enable the main shaft to generate buoyancy to offset gravity, thereby reducing the bending deformation caused by gravity friction and deadweight. The chain tug is conveniently connected through the first flange 3 (the chain tug is a two-petal structure and does not require a sleeve connection). The second flange 6 is connected to replace the key to connect the main shaft drive wheel and the driven wheel, thereby reducing the axial movement of the main shaft drive driven wheel and avoiding chain derailment.

[0027] In this embodiment, the main shaft includes a first shaft section 1, and a first flange 3 and a second shaft section 2 are coaxially arranged at two ends of the first shaft section 1, and the radii of the first shaft section 1 and the second shaft section 2 are different.

[0028] Specifically, the buoyancy is ensured by a variable diameter design while meeting the size requirements of the connections at both ends.

[0029] In this embodiment, the radius of the first shaft segment 1 is greater than the radius of the second shaft segment 2, the radius of the first flange 3 is greater than the radius of the first shaft segment 1, one side of the first flange 3 is connected to the end face of the first shaft segment 1, and a reinforcing rib is arranged between the other side of the first flange 3 and the outer periphery of the second shaft segment 2.

[0030] Specifically, the first flange 3 is arranged at the connection between the first shaft section 1 and the second shaft section 2 to enhance the supporting strength at the diameter change point and facilitate centralized strengthening.

[0031] In this embodiment, a two-piece bearing is provided on the main shaft.

[0032] Specifically, the two-piece bearing is easy to disassemble and install and is convenient to maintain.

[0033] In this embodiment, the bearing is an ultra-high molecular weight polyethylene bearing.

[0034] Specifically, the underwater lubricity of the ultra-high molecular weight polyethylene bearing is utilized to reduce frictional resistance.

[0035] Furthermore, it can also be a bearing made of or other highly lubricating and wear-resistant materials.

[0036] In this embodiment, the cavity 4 includes at least one cylindrical chamber coaxial with the shaft body.

[0037] Specifically, the coaxial cylindrical chamber is used to prevent the center of gravity of the spindle from shifting.

[0038] Furthermore, in order to ensure airtightness and stability, multiple chambers that are not interconnected can be provided.

[0039] In this embodiment, a first cavity and a second cavity are respectively disposed in the first shaft section 1 and the second shaft section 2 .

[0040] In this embodiment, the first cavity and the second cavity are communicated with each other.

[0041] Specifically, the main shaft is a stainless steel main shaft, which can be produced by curling a stainless steel plate through a welding process.

[0042] In this embodiment, the cavity 4 includes a plurality of chambers distributed circumferentially around the axis of the main shaft.

[0043] Specifically, the axis rigidity is maintained to avoid distortion.

[0044] In this embodiment, a bearing groove 5 is provided at one end of the second shaft segment 2 away from the first shaft segment 1 .

[0045] Specifically, the bearings are connected via the bearing groove 5 , and limit plates are respectively provided at both ends of the bearing groove 5 .

[0046] When a buoyancy type low deflection high reliability main shaft system of a mud scraper is used in this embodiment, a new type of non-metallic chain mud scraper is used as an example, firstly, the chain tug is connected through the first flange 3, then the two-piece bearing is installed, and then the main shaft is installed to the bearing seat and connected to the main shaft drive driven wheel. When the main shaft works underwater, the buoyancy of the internal cavity 4 reduces the gravity to avoid the distortion of the main shaft due to its own weight.

[0047] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A buoyancy type low deflection high reliability main shaft system for a mud scraper, characterized in that: include: The shaft body has a sealed cavity inside, the shaft body is provided with at least one first flange, and at least one second flange is provided at both ends of the shaft body, the first flange is used to connect the chain pulley, and the second flange is used to connect the driving wheel and the driven wheel of the main shaft.

2. The buoyancy type low deflection high reliability main shaft system of the mud scraper according to claim 1 is characterized in that: The main shaft includes a first shaft segment, and the first shaft segment and the second shaft segment are coaxially arranged at two ends of the first flange, respectively. The first shaft segment and the second shaft segment have different radii.

3. The buoyancy type low deflection high reliability main shaft system of the mud scraper according to claim 2 is characterized in that: The radius of the first shaft segment is greater than the radius of the second shaft segment, the radius of the first flange is greater than the radius of the first shaft segment, one side of the first flange is connected to the end face of the first shaft segment, and a reinforcing rib is provided between the other side of the first flange and the outer periphery of the second shaft segment.

4. The buoyancy type low deflection high reliability main shaft system for a mud scraper according to claim 1 is characterized in that: The main shaft is sleeved with a two-piece bearing.

5. The buoyancy type low deflection high reliability main shaft system for a mud scraper according to claim 4 is characterized in that: The bearing is an ultra-high molecular weight polyethylene bearing.

6. The buoyancy type low deflection high reliability main shaft system for a mud scraper according to claim 1 is characterized in that: The cavity includes at least one cylindrical chamber coaxial with the shaft body.

7. The buoyancy type low deflection high reliability main shaft system for a mud scraper according to claim 2 is characterized in that: A first cavity and a second cavity are respectively disposed in the first shaft segment and the second shaft segment.

8. The buoyancy type low deflection high reliability main shaft system for a mud scraper according to claim 7 is characterized in that: The first cavity and the second cavity are communicated with each other.

9. The buoyancy type low deflection high reliability main shaft system for a mud scraper according to claim 1, characterized in that: The cavity includes a plurality of chambers distributed circumferentially around the axis of the spindle.

10. The buoyancy type low deflection high reliability main shaft system for a mud scraper according to claim 2, characterized in that: A bearing groove is arranged at one end of the second shaft segment away from the first shaft segment.

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