Supporting structure for large-span transmission shaft of grillage machine

Abstract

The utility model discloses a supporting structure for a large-span transmission shaft of a grillage machine, in the supporting structure, a copper sleeve is used as a bearing which is arranged on a rotating support and is used for being rotationally connected with a rotating shaft, the copper sleeve is suitable for low-speed and high-load working conditions of the rotating shaft of a rotary grillage machine, and compared with a nylon sleeve, the copper sleeve has better wear resistance, can effectively reduce the wear speed, and can be used for supporting the large-span transmission shaft of the grillage machine. The possibility that entanglements enter due to the increase of the gap with the rotating shaft is reduced; the framework oil seal structures are arranged on the two sides of the copper sleeve respectively and are in sealing fit with the supporting hole wall and the rotating shaft respectively, entanglements can be further prevented from entering, leakage of lubricating agents can be reduced, maintenance work can be reduced, and the stability of continuous work of the grillage machine is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to a supporting structure for a large-span transmission shaft of a grille machine. Background Art

[0002] In sewage treatment plants, in order to prevent solid debris in sewage from affecting sewage treatment or causing blockage of sewage treatment pipelines and equipment, a rotary screen machine needs to be installed at the water inlet to remove solid debris in sewage in advance. The rotary screen machine mainly includes a frame, a sprocket, a chain, rake teeth and a drive device. The frame includes two side wall panels that are opposite to each other in the horizontal direction. A plurality of sprocket groups composed of two side wall panels are spaced apart on the inner side of the two side wall panels. The two sprockets of the sprocket group are rotatably connected to the two side wall panels through a rotating shaft. A plurality of rake teeth are connected to the chain to form a circle of rotary screens. The rotary screens are arranged outside all the sprocket groups and meshed. The top sprocket group is the active sprocket group, and the corresponding rotating shaft is the active shaft. One end of the active shaft extends out of the frame and is connected to the drive device, thereby using the drive device to drive the rotary screen to reciprocate.

[0003] For sewage treatment plants with large sewage flow, partition walls are generally used to form multiple parallel water inlets, and rotary screen machines are installed at each water inlet; in order to save cost and space, such as Figure 1 As shown, the applicant tried to increase the spacing between the wall panels on both sides and the length of the rotating shaft therebetween, and added a support frame connected to the side wall panels between the wall panels on both sides. The support frame rotates with the rotating shaft through a rotating support with a nylon sleeve inside, thereby obtaining a large-span rotary grille machine, which increases the water-passing cross-section while reducing the use cost and layout space; but after trial use, it was found that during the rotation of the rotary grille, fine debris such as hair carried on it is easy to fall from between the rake teeth and entangle on the rotating shaft, especially when the rotary grille rotates through the driving shaft, due to the reduction of the inclination angle, the fine debris on the rotary grille is more likely to fall, and the entangled objects accumulated on the rotating shaft are easy to enter the rotating support, causing the rotating shaft to lock or even break. In particular, the gap between the driving shaft with a large load and the nylon sleeve is easy to increase due to the rapid wear of the nylon sleeve, and the entangled objects are easier to enter. In addition, since the rotating support is far away from the wall panels on both sides, it is also difficult to slow down the wear rate of the nylon sleeve by frequently adding lubricants. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a support structure for a large-span transmission shaft of a grille machine, so as to solve the technical problem that winding objects easily enter the rotating support and cause the rotating shaft to lock, thereby achieving the effect of improving the operating stability of the large-span grille machine.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A support structure for a large-span transmission shaft of a grille machine comprises a frame, the frame comprises two side wall panels opposite to each other in transverse direction, a sprocket group is arranged between the side wall panels, the sprocket group comprises two sprockets opposite to each other in transverse direction and a rotating shaft fixedly passing through the sprockets and rotatably connected to the side wall panels, a support frame connected to the side wall panels is arranged between the two sprockets, a rotating support is arranged on the support frame, a supporting hole is horizontally penetrated through the rotating support, a copper sleeve is arranged in the supporting hole, skeleton oil seal structures are respectively arranged on both sides of the copper sleeve in the supporting hole, the rotating shaft passes through the copper sleeve and the skeleton oil seal structure and rotatably cooperates, and the outer diameter surface and inner diameter surface of the skeleton oil seal structure are respectively sealed with the supporting hole wall and the rotating shaft.

[0007] Furthermore, a through hole is radially penetrated through the copper sleeve, and the through hole is filled with graphite.

[0008] Furthermore, there are a plurality of through holes which are evenly distributed on the copper sleeve.

[0009] Furthermore, there are multiple sprocket groups and they are spaced apart along the length direction of the side wall panels. The two sprockets of the sprocket group are respectively arranged close to the two side wall panels. The support frame is provided with multiple rotating supports corresponding to the rotating shafts of each sprocket group one by one.

[0010] Furthermore, two sprockets are provided on the rotating shaft of the sprocket group near the two sides of the support frame, and baffles are respectively connected to the front and rear sides of the support frame. The lateral dimension of the baffle is larger than the lateral dimension of the rotating support. Rotating grilles composed of chains and rake teeth are respectively provided between the baffle and the two side wall panels, and the sprockets between the baffle and the side wall panels are engaged with the corresponding rotating grilles.

[0011] Furthermore, the frame also includes a top plate and a bottom plate respectively connected between the upper ends and the lower ends of the wall plates on both sides, and both ends of the baffle are respectively connected to the top plate and the bottom plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The support structure for the large-span transmission shaft of the grille machine described in the utility model replaces the nylon sleeve embedded in the support hole on the rotating support with a copper sleeve, and utilizes the good wear resistance of the copper sleeve to reduce the possibility of an increase in the gap with the rotating shaft due to wear, thereby preventing the winding on the rotating shaft from entering between the rotating shaft and the copper sleeve, causing the rotating shaft to lock or break.

[0014] 2. The support structure for the large-span transmission shaft of the grille machine described in the utility model has skeleton sealing structures respectively arranged on both sides of the copper sleeve in the support hole, which can not only further prevent entanglements from entering between the rotating shaft and the copper sleeve, but also reduce the possibility of lubricant leakage between the rotating shaft and the copper sleeve, which is beneficial to improving the stability of the rotating shaft rotation.

[0015] 3. The support structure for the large-span transmission shaft of the grille machine described in the utility model has a through hole on the copper sleeve, and graphite is filled in the hole as a lubricant. Graphite, as a solid lubricant, can not only be gradually released during the rotation of the shaft to continuously provide the required lubrication effect, but also graphite has high thermal conductivity. Filling graphite in the through hole of the copper sleeve can help dissipate the heat generated by friction, thereby reducing the temperature of the copper sleeve and the shaft and improving the thermal stability of the entire shaft rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a partially cutaway front view of the large-span rotary grille machine described in the background technology;

[0017] Figure 2 It is a partially cutaway front view of the support structure for the large-span transmission shaft of the grille machine according to the embodiment;

[0018] Figure 3 It is a schematic diagram of the support frame and the rotating support thereon according to the embodiment;

[0019] Among them, there are side wall panels 1, rotating shafts 2, support frames 3, rotating supports 4, rotary grilles 5, sprockets 6, copper sleeves 7, skeleton oil seal structures 8, graphite 9, baffles 10, connecting rods 11, top plates 12, bottom plates 13, and connecting columns 14. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0021] Example:

[0022] See also Figure 2 and Figure 3A support structure for a large-span transmission shaft of a grille machine includes a frame, the frame includes two side wall panels 1 opposite to each other in the transverse direction, a sprocket wheel 6 group is arranged between the two side wall panels 1, the sprocket wheel 6 group includes two sprocket wheels 6 opposite to each other in the transverse direction and a rotating shaft 2 fixedly passing through the sprocket wheels 6 and rotatably connected to the two side wall panels 1, a support frame 3 connected to the two side wall panels 1 is arranged between the two sprocket wheels 6, a rotating support 4 is arranged on the support frame 3, a supporting hole is horizontally penetrated on the rotating support 4, a copper sleeve 7 is arranged in the supporting hole, and skeleton oil seals are respectively arranged in the supporting holes on both sides of the copper sleeve 7 Structure 8, the rotating shaft 2 passes through the copper sleeve 7 and the skeleton oil seal structure 8 and rotates together, the outer diameter surface and the inner diameter surface of the skeleton oil seal structure 8 are respectively sealed and matched with the support hole wall and the rotating shaft 2; in this embodiment, there are multiple sprocket wheel groups 6 and they are arranged at intervals along the length direction of the side wall panel 1, and the two sprocket wheels 6 of the sprocket wheel group 6 are respectively arranged against the two side wall panels 1, and a plurality of rotating supports 4 are provided on the support frame 3 and correspond one by one to the rotating shaft 2 of each sprocket wheel group 6; a rotating grille 5 composed of a chain and rake teeth is provided between the two side wall panels 1, and the rotating grille 5 is meshed with the sprocket wheel 6.

[0023] The support structure for the large-span transmission shaft of the grille machine described in the utility model uses a copper sleeve 7 as a bearing on the rotating support 4 for rotationally connecting with the rotating shaft 2. The copper sleeve 7 is suitable for the low-speed and high-load working conditions of the rotating shaft 2 of the rotary grille machine. Compared with the nylon sleeve, the copper sleeve 7 has better wear resistance, can effectively slow down the wear rate, and reduce the possibility of the entry of winding objects due to the increase in the gap with the rotating shaft 2; although the cost of the copper sleeve 7 may be higher than that of the nylon sleeve, in the long run, the use of the copper sleeve 7 can reduce the maintenance times and maintenance costs of the grille machine, because the service life of the copper sleeve 7 is longer and the replacement frequency is reduced; in addition, a skeleton oil seal structure 8 is respectively provided on both sides of the copper sleeve 7, and the skeleton oil seal structure 8 is respectively sealed with the support hole wall and the rotating shaft 2, which can not only further prevent the entry of winding objects and dirt, but also effectively keep the lubricant between the rotating shaft 2 and the copper sleeve 7, reduce the lack of lubrication caused by leakage, and by reducing wear and maintaining lubrication, the skeleton sealing structure 8 helps to extend the service life of the rotating shaft 2 and the copper sleeve 7, reduce maintenance work, and thus improve the stability of continuous operation of the grille machine.

[0024] See also Figure 3 , a through hole is radially penetrated on the copper sleeve 7, and the through hole is filled with graphite 9; in this way, drilling a through hole on the copper sleeve 7 and filling the through hole with graphite 9 as a lubricant is not only beneficial to improving the heat dissipation effect, but also can continuously replenish the lubricant between the rotating shaft 2 and the copper sleeve 7 to ensure that a lubricating oil film is formed between the rotating shaft 2 and the copper sleeve 7.

[0025] See also Figure 3 There are multiple through holes and they are evenly distributed on the copper sleeve 7; in this way, heat dissipation and lubricant replenishment are more uniform.

[0026] See also Figure 2, two sprocket wheels 6 are further provided on the rotating shaft 2 of the sprocket wheel 6 group near the two sides of the support frame 3, and the front and rear sides of the support frame 3 are respectively connected with baffles 10. In this embodiment, a connecting column 14 is formed on the support frame 3 to connect with the baffle 10; the lateral dimension of the baffle 10 is larger than the lateral dimension of the rotating support 4, and a rotary grille 5 composed of a chain and rake teeth is respectively provided between the baffle 10 and the wall panels 1 on both sides, and the sprocket wheel 6 between the baffle 10 and the side wall panel 1 is meshed with the corresponding rotary grille 5;

[0027] In this way, by increasing the number of sprockets 6 on the rotating shaft 2 and setting the revolving grilles 5 on both sides of the support frame 3, when the revolving grilles 5 are damaged, only the damaged part needs to be replaced, which is beneficial to reducing the cost of use, and a baffle 10 is set to cover the rotating support 4 to prevent small debris carried on the revolving grilles 5 from falling directly onto the rotating support 4 and the rod section of the rotating shaft 2 near it, further reducing the possibility of entanglement entering between the copper sleeve 7 and the rotating shaft 2.

[0028] See also Figure 2 In this embodiment, the support frame 3 is connected to the wall panels 1 on both sides through a laterally arranged connecting rod 11, and the frame also includes a top plate 12 and a bottom plate 13 respectively connected between the upper ends and the lower ends of the wall panels 1 on both sides, and the two ends of the baffle 10 are respectively connected to the top plate 12 and the bottom plate 13; in this way, the support frame 3 is also connected to the top plate 12 and the bottom plate 13 respectively through the baffle 10, further strengthening the connection strength between the support frame 3 and the frame, so that the rotating support 4 provides a stable support for the rotating shaft 2.

[0029] Two revolving grilles are arranged on both sides of the support frame, and the two revolving grilles share a frame and a driving device.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the utility model without departing from the purpose and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.

Claims

1. A support structure for a large-span transmission shaft of a grille machine, characterized in that: The machine comprises a frame, which comprises two side wall panels which are laterally opposite to each other, a sprocket group is arranged between the two side wall panels, the sprocket group comprises two sprockets which are laterally opposite to each other and a rotating shaft which is fixedly passed through the sprockets and is rotatably connected to the two side wall panels, a supporting frame which is connected to the two side wall panels is arranged between the two sprockets, a rotating support is arranged on the supporting frame, a supporting hole is laterally passed through the rotating support, a copper sleeve is arranged in the supporting hole, skeleton oil seal structures are respectively arranged in the supporting holes on both sides of the copper sleeve, the rotating shaft passes through the copper sleeve and the skeleton oil seal structure and is rotatably matched, and the outer diameter surface and the inner diameter surface of the skeleton oil seal structure are respectively sealed with the supporting hole wall and the rotating shaft.

2. According to claim 1, a support structure for a large-span transmission shaft of a grille machine, characterized in that: The copper sleeve is radially penetrated with a through hole, and the through hole is filled with graphite.

3. According to claim 2, a support structure for a large-span transmission shaft of a grille machine, characterized in that: There are a plurality of through holes which are evenly distributed on the copper sleeve.

4. The support structure for a large-span transmission shaft of a grille machine according to claim 1, characterized in that: There are multiple sprocket groups and they are spaced apart along the length direction of the side wall panels. Two sprockets of the sprocket group are respectively arranged close to the two side wall panels. The support frame is provided with multiple rotating supports corresponding to the rotating shafts of each sprocket group one by one.

5. The support structure for a large-span transmission shaft of a grille machine according to claim 4, characterized in that: Two sprockets are further provided on the rotating shaft of the sprocket group, close to both sides of the support frame. The front and rear sides of the support frame are respectively connected with baffles, the lateral dimensions of the baffles are larger than the lateral dimensions of the rotating support, and rotating grilles composed of chains and rake teeth are respectively provided between the baffles and the wall panels on both sides, and the sprockets between the baffles and the side wall panels are meshed with the corresponding rotating grilles.

6. The support structure for a large-span transmission shaft of a grille machine according to claim 1, characterized in that: The frame also includes a top plate and a bottom plate which are respectively connected between the upper ends and the lower ends of the wall plates on both sides, and two ends of the baffle are respectively connected to the top plate and the bottom plate.

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