阅读说明：本技术 鼓形滤网的轮毂与辐条的连接结构、鼓形滤网 (Drum filter screen and connecting structure of hub and spoke thereof ) 是由 黄晓杰 杨锦春 张峰 何英勇 谢洪虎 林一山 戈永军 陈楚员 吴迪 于 2021-08-24 设计创作，主要内容包括：本发明涉及一种鼓形滤网的轮毂与辐条的连接结构和鼓形滤网。鼓形滤网的轮毂与辐条的连接结构包括：轮毂、多个辐条、多个连接螺栓、多个支撑块以及多个调节螺杆。上述的鼓形滤网的轮毂与辐条的连接结构,减小了连接螺栓所受的来自辐条长度方向X的力(即连接螺栓所受的剪力),减小了连接螺栓被剪断的风险和安全隐患。此外,在辐条安装至轮毂时,能够通过调节螺杆调节辐条与轮毂的安装间隙,并在调节辐条与轮毂的安装间隙后将二者通过连接螺栓固定,进而有利于保证鼓形滤网的齿圈与驱动装置的齿轮的啮合精度,以满足鼓形滤网的精度要求。(The invention relates to a connecting structure of a hub and spokes of a drum filter screen and the drum filter screen. The connection structure of the hub and the spokes of the drum filter comprises: the wheel comprises a hub, a plurality of spokes, a plurality of connecting bolts, a plurality of supporting blocks and a plurality of adjusting screws. The connecting structure of the hub and the spoke of the drum-shaped filter screen reduces the force (namely the shearing force applied to the connecting bolt) applied to the connecting bolt from the length direction X of the spoke, and reduces the risk and the potential safety hazard of the connecting bolt being sheared off. In addition, when the spoke is installed to the hub, the installation gap between the spoke and the hub can be adjusted through the adjusting screw, and the spoke and the hub are fixed through the connecting bolt after the installation gap between the spoke and the hub is adjusted, so that the meshing precision of a gear ring of the drum-shaped filter screen and a gear of the driving device is guaranteed, and the precision requirement of the drum-shaped filter screen is met.)

1. A connection structure of a hub and a spoke of a drum filter screen, comprising:

a hub provided with a plurality of first holes penetrating in a thickness direction thereof;

the spokes are sequentially arranged along the circumferential direction of the hub, and are provided with a first end and a second end along the length direction, the first end is arranged on one side of the hub in the thickness direction, and the first end is provided with a second hole corresponding to the first hole, wherein one of the first hole or the second hole is a strip-shaped hole, and the length direction of the strip-shaped hole is along the length direction of the corresponding spoke;

a plurality of tie bolts passing through the corresponding first and second holes so as to fixedly connect the hub and the corresponding first ends of the spokes;

the supporting blocks are fixedly connected with the wheel hub and correspond to the spokes one by one, and the supporting blocks are positioned on one side, away from the second end, of the first end of the corresponding spoke along the length direction of the spoke; and

and one axial end of each adjusting screw is connected with the corresponding supporting block, and the other axial end of each adjusting screw is in threaded connection with the corresponding spoke, wherein the adjusting screws axially extend along the length direction of the corresponding spoke.

2. The hub-to-spoke attachment of a drum screen of claim 1, wherein the support block abuts the hub at an end of the spoke facing away from the corresponding spoke along a length of the spoke.

3. The hub to spoke attachment arrangement of a drum screen of claim 2,

the surface of the hub is provided with a plurality of first grooves sunken along the thickness direction;

the supporting blocks are arranged in the first grooves and correspond to the first grooves one by one; along the length direction of the spoke, one end of the supporting block, which is opposite to the corresponding spoke, is abutted against the side wall of the first groove.

4. The hub-to-spoke attachment of a drum screen of claim 3, wherein the first ends of the spokes fit within corresponding first recesses.

5. A hub to spoke attachment arrangement for a drum screen according to claim 3, wherein the support blocks abut the hub towards the respective spoke ends along the length of the spokes.

6. The hub-to-spoke attachment structure for a drum screen of claim 5, wherein the first groove has a bottom wall facing in the thickness direction of the hub, the bottom wall being provided with a second groove recessed in the thickness direction of the hub;

the supporting blocks are arranged in the corresponding second grooves, and along the length direction of the spokes, one ends of the supporting blocks, facing the corresponding spokes, are abutted against the side walls of the second grooves.

7. The hub to spoke attachment of a drum screen of claim 6, wherein said support block comprises:

the connecting part is arranged in the second groove and is fixedly connected with the hub; along the length direction of the spokes, one end of the connecting part, which is back to the corresponding spokes, is abutted against the side wall of the first groove, and one end of the connecting part, which is facing to the corresponding spokes, is abutted against the side wall of the second groove; and

the supporting part is fixedly connected with the connecting part, protrudes out of the surface of the hub along the thickness direction of the hub, and protrudes out of the part of the hub and is in threaded connection with the corresponding adjusting screw rod.

8. The structure of claim 7, wherein the connecting portion has a cross-sectional area greater than a cross-sectional area of the support portion and is configured to abut against a surface of the hub in a thickness direction of the hub in a longitudinal direction of the hub.

9. The structure of claim 7, further comprising a plurality of filler blocks disposed along a length of the spoke between the connection portion and the corresponding first end of the spoke, wherein the connection portion and the corresponding first end of the spoke are respectively attached to the corresponding filler blocks.

10. A drum screen, comprising:

a hub to spoke attachment arrangement for a drum screen according to any one of claims 1 to 9; and

and the filter screen body is connected with the second ends of the spokes.

Technical Field

The invention relates to the technical field of circulating water filtering systems, in particular to a connecting structure of a hub and spokes of a drum filter screen and the drum filter screen.

Background

The drum filter screen is used as the last-stage large-scale filtering equipment for resisting marine organisms in a nuclear power plant cold source 'depth defense' system, the performance of the drum filter screen directly determines the safety of the cold source of the power plant and the safe and stable operation of a unit, and once the drum filter screen breaks down, the power reduction of the unit and even the shutdown of a reactor can be caused.

The drum type filter screen is generally divided into two forms of 'external inlet and internal outlet' and 'internal inlet and external outlet', and the two forms are different in that when the drum type filter screen operates in an 'internal inlet and external outlet' mode, water enters from the inner side of the drum type filter screen and flows out from the outer side of the drum type filter screen. On the contrary, when the drum-shaped filter screen with the external inlet and the internal outlet operates, water flows into the outer side of the drum-shaped filter screen and flows out from the inner side of the outer side of the drum-shaped filter screen, so that garbage such as marine life and the like can be intercepted on the outer side of the drum-shaped filter screen.

The 'outer inlet and inner outlet' type drum-shaped filter screen comprises a filter screen body, a hub and a plurality of spokes which are sequentially arranged along the circumferential direction of the hub. The two ends of the spoke in the length direction are respectively connected with the hub and the filter screen body. Wherein the spokes and the hub are generally fixed by connecting bolts.

When the 'outer inlet and inner outlet' type drum filter screen runs, the water level of the outer side of the drum filter screen is higher than that of the inner side of the drum filter screen, and under the action of water pressure and the self weight of the drum filter screen, connecting bolts connecting spokes and a wheel hub are easy to be subjected to large shearing force, so that the connecting bolts are easy to be sheared, and the safety problem of the drum filter screen can be caused.

In addition, when the driving device drives the drum-shaped filter screen to operate, the driving device drives the drum-shaped filter screen to rotate by means of the meshing of a gear arranged on the driving device and a gear ring arranged on the drum-shaped filter screen, wherein the mounting clearance between the spokes and the wheel hub is directly related to the meshing precision of the gear and the gear ring. However, the conventional drum filter screen lacks an adjusting means for the mounting clearance between the spokes and the hub, so that the meshing precision of the gear and the gear ring is difficult to ensure, and the running precision requirement of the drum filter screen is difficult to ensure.

Disclosure of Invention

Therefore, it is necessary to provide a connecting structure of a hub and a spoke of a drum filter and the drum filter, aiming at the problems of the conventional drum filter, the potential safety hazard caused by the high shearing force easily applied to a connecting bolt for connecting the spoke and the hub, and the lack of an adjusting means for the mounting gap between the spoke and the hub. This connection structure of wheel hub and spoke of cydariform filter screen not only can reduce the shear force that the connecting bolt who connects spoke and wheel hub received, can adjust spoke and wheel hub's installation clearance moreover.

An embodiment of the present application provides a connection structure of wheel hub and spoke of drum filter screen, includes:

a hub provided with a plurality of first holes penetrating in a thickness direction thereof;

the spokes are sequentially arranged along the circumferential direction of the hub, and are provided with a first end and a second end along the length direction, the first end is arranged on one side of the hub in the thickness direction, and the first end is provided with a second hole corresponding to the first hole, wherein one of the first hole or the second hole is a strip-shaped hole, and the length direction of the strip-shaped hole is along the length direction of the corresponding spoke;

a plurality of tie bolts passing through the corresponding first and second holes so as to fixedly connect the hub and the corresponding first ends of the spokes;

the supporting blocks are fixedly connected with the wheel hub and correspond to the spokes one by one, and the supporting blocks are positioned on one side, away from the second end, of the first end of the corresponding spoke along the length direction of the spoke; and

and one axial end of each adjusting screw is connected with the corresponding supporting block, and the other axial end of each adjusting screw is in threaded connection with the corresponding spoke, wherein the adjusting screws axially extend along the length direction of the corresponding spoke.

According to the connecting structure of the hub and the spoke of the drum-shaped filter screen, under the action of water pressure and gravity, force (tension or pressure) borne by the spoke along the length direction X is transmitted to the supporting block through the adjusting screw rod, so that force (namely shearing force borne by the connecting bolt) borne by the connecting bolt in the length direction X of the spoke is reduced, and the risk and the potential safety hazard that the connecting bolt is sheared are reduced. In addition, when spoke installation to wheel hub, owing to can drive through adjusting screw and follow its length direction adjusting position along the spoke to establish into the bar hole through one in second hole and the first hole, thereby can pass through connecting bolt with the two behind the installation clearance of adjusting spoke and wheel hub and fix, and then be favorable to guaranteeing the ring gear of drum-shaped filter screen and the meshing precision of drive arrangement's gear, with the required precision of satisfying drum-shaped filter screen.

In one embodiment, along the length direction of the spokes, the supporting blocks abut against the hub at the end facing away from the corresponding spokes.

In one embodiment, the surface of the hub is provided with a plurality of first grooves depressed in the thickness direction;

the supporting blocks are arranged in the first grooves and correspond to the first grooves one by one; along the length direction of the spoke, one end of the supporting block, which is opposite to the corresponding spoke, is abutted against the side wall of the first groove.

In one embodiment, the first ends of the spokes are mounted in the corresponding first grooves.

In one embodiment, the support blocks abut the hub facing the corresponding spoke end along the length of the spoke.

In one embodiment, the first groove has a bottom wall facing the thickness direction of the hub, and the bottom wall is provided with a second groove recessed along the thickness direction of the hub;

the supporting blocks are arranged in the corresponding second grooves, and along the length direction of the spokes, one ends of the supporting blocks, facing the corresponding spokes, are abutted against the side walls of the second grooves.

In one embodiment, the support block comprises:

the connecting part is arranged in the second groove and is fixedly connected with the hub; along the length direction of the spokes, one end of the connecting part, which is back to the corresponding spokes, is abutted against the side wall of the first groove, and one end of the connecting part, which is facing to the corresponding spokes, is abutted against the side wall of the second groove; and

the supporting part is fixedly connected with the connecting part, protrudes out of the surface of the hub along the thickness direction of the hub, and protrudes out of the part of the hub and is in threaded connection with the corresponding adjusting screw rod.

In one embodiment, the thickness direction of the hub is taken as a longitudinal direction, the cross-sectional area of the connecting portion is larger than that of the supporting portion, and the connecting portion is tightly attached to the surface of the hub in the thickness direction.

In an embodiment, the spoke structure further comprises a plurality of filling blocks, the filling blocks are arranged between the connecting parts and the corresponding first ends of the spokes along the length direction of the spokes, and the connecting parts and the corresponding first ends of the spokes are respectively tightly attached to the corresponding filling blocks.

Yet another embodiment of the present application provides a drum screen comprising:

a hub to spoke attachment arrangement for a drum screen according to any preceding claim; and

and the filter screen body is connected with the second ends of the spokes.

According to the drum-shaped filter screen, under the action of water pressure and gravity, force (tension or pressure) borne by the spoke along the length direction X is transmitted to the supporting block through the adjusting screw rod, so that the force (namely shearing force borne by the connecting bolt) borne by the connecting bolt in the length direction X is reduced, and the risk and potential safety hazard that the connecting bolt is sheared are reduced. In addition, when spoke installation to wheel hub, owing to can drive through adjusting screw and follow its length direction adjusting position along the spoke to establish into the bar hole through one in second hole and the first hole, thereby can pass through connecting bolt with the two behind the installation clearance of adjusting spoke and wheel hub and fix, and then be favorable to guaranteeing the ring gear of drum-shaped filter screen and the meshing precision of drive arrangement's gear, with the required precision of satisfying drum-shaped filter screen.

Drawings

FIG. 1 is a schematic view of a hub and spoke attachment arrangement for a drum screen according to one embodiment;

FIG. 2 is an enlarged view of a portion of area A of FIG. 1;

FIG. 3 is a schematic view of the support block of FIG. 2;

FIG. 4 is a schematic view of another perspective of the hub to spoke attachment arrangement of the drum screen of FIG. 1;

fig. 5 is a partially enlarged view of the region B in fig. 4.

The reference numbers illustrate:

a hub to spoke attachment 100 for a drum screen;

a hub 110; a first hole 101; a first groove 103; a bottom wall 103 a; a second groove 104;

spokes 120; a first end 120 a; a second end 120 b; a first portion 121; a second portion 122; a third portion 123;

a connecting bolt 130;

a support block 140; a connecting portion 141; a support portion 142;

an adjusting screw 150; a nut 151;

a fixing bolt 160;

the block 170 is filled.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, an embodiment of the present application provides a hub and spoke attachment structure 100 for a drum filter. Referring again to fig. 2-5, the hub and spoke attachment structure 100 of the drum screen includes: a hub 110, a plurality of spokes 120, a plurality of connecting bolts 130, a plurality of support blocks 140, and a plurality of adjusting screws 150.

Referring to fig. 4, a plurality of spokes 120 are arranged in sequence along the circumferential direction of the hub 110. The spokes 120 have first and second ends 120a, 120b along their length direction X. First end 120a is coupled to hub 110 and second end 120b is adapted to couple to a screen body of a drum screen to support the screen body. The lengthwise direction X of the spokes 120 is generally radial to the hub 110.

Specifically, referring to fig. 2, 4 and 5, the first end 120a is disposed on one side of the hub 110 in the thickness direction. The hub 110 is provided with a plurality of first holes 101 penetrating in a thickness direction thereof. The first end 120a of the spoke 120 is provided with a second hole (not shown) corresponding to the first hole 101. The second holes are aligned with the corresponding first holes 101. Referring to fig. 2, the coupling bolts 130 pass through the corresponding first and second holes 101 and 120, so that the hub 110 and the first ends 120a of the corresponding spokes 120 can be fixedly coupled. In this embodiment, the second holes are strip-shaped holes, and the length direction of the second holes is along the length direction X of the corresponding spoke 120.

Referring to fig. 2 and 5, the supporting blocks 140 are fixedly connected to the hub 110 and correspond to the spokes 120 one by one, and the supporting blocks 140 are sequentially arranged along the circumferential direction of the hub 110. The support blocks 140 are located at the first end 120a of the corresponding spoke 120 away from the second end 120b along the length direction X of the spoke 120.

Referring to fig. 2 and 5, an adjusting screw 150 is disposed between the corresponding support block 140 and the spoke 120 along the length direction X of each spoke 120. One axial end of each adjusting screw 150 is connected to the corresponding support block 140, and the other axial end is in threaded connection with the corresponding spoke 120, wherein the adjusting screw 150 is axially along the length direction X of the corresponding spoke 120. Under the action of water pressure and gravity, the force applied to the spoke 120 is mainly transmitted along the length direction X of the spoke 120, and the force (tension or pressure) applied to the spoke 120 along the length direction X is transmitted to the supporting block 140 through the adjusting screw 150, so that the supporting block 140 and the adjusting screw 150 share most of the acting force from the spoke 120 in the length direction, the force applied to the connecting bolt 130 from the spoke 120 in the length direction X (namely the shearing force applied to the connecting bolt 130) is reduced, and the risk and the potential safety hazard that the connecting bolt 130 is sheared are reduced.

In addition, when the spoke 120 is mounted to the hub 110, the supporting block 140 is fixed to the hub 110, and the adjusting screw 150 is connected to the supporting block 140 and the spoke 120, respectively. The adjusting screw 150 is then rotated, so that the adjusting screw 150 can drive the spokes 120 to move along the length direction thereof through the screw transmission with the spokes 120, so as to adjust the position of the spokes 120 along the length direction thereof. Since the second holes of the spokes 120 are strip-shaped holes, and the length direction of the second holes is along the length direction X of the corresponding spokes 120, the second holes can still correspond to the first holes 101 of the hub 110 when the spokes 120 are adjusted in position along the length direction. At this time, the hub 110 and the spokes 120 can be fixedly connected by passing the connecting bolts 130 through the first holes 101 and the second holes, respectively, and tightening the connecting bolts 130 with nuts. Therefore, when the spoke 120 is installed on the hub 110, the adjusting screw 150 can drive the spoke 120 to adjust the position along the length direction of the spoke, and one of the second hole and the first hole is set to be a strip-shaped hole, so that the spoke 120 and the hub 110 can be fixed through the connecting bolt 130 after the installation gap between the spoke 120 and the hub 110 is adjusted, and the meshing precision between the gear ring of the drum-shaped filter screen and the gear of the driving device is guaranteed, and the precision requirement of the drum-shaped filter screen is met.

In the connection structure 100 of the hub and the spoke of the drum filter screen, under the action of water pressure and gravity, the force (tension or pressure) applied to the spoke 120 in the length direction X is transmitted to the support block 140 through the adjusting screw 150, so that the force applied to the connecting bolt 130 in the length direction X from the spoke 120 (i.e., the shearing force applied to the connecting bolt 130) is reduced, and the risk and the potential safety hazard that the connecting bolt 130 is sheared off are reduced. In addition, when spoke 120 is installed to wheel hub 110, because can drive through adjusting screw 150 and follow its length direction adjusting position along spoke 120 to through establishing one in second hole and the first hole into the bar hole, thereby can pass through connecting bolt 130 with both fixed after adjusting spoke 120 and wheel hub 110's installation clearance, and then be favorable to guaranteeing the meshing precision of the ring gear of drum-shaped filter screen and drive arrangement's gear, with the required precision of satisfying drum-shaped filter screen.

In other embodiments, the first hole may be a bar-shaped hole, and the length direction of the bar-shaped hole is along the length direction of the corresponding spoke. It will be appreciated that in this case, the second hole can still correspond to the first hole in the hub as the spoke is adjusted in position along its length, so that the connecting bolt can pass through the first and second holes respectively.

Specifically, as shown in fig. 4, in the present embodiment, the hub 110 has a discoid solid structure. Hub 110 is manufactured by a forging process, so that it has high strength.

Specifically, in the present embodiment, the spoke 120 is made of an H-shaped steel structure, and includes a first portion 121, a second portion 122, and a third portion 123, where the first portion 121 and the third portion 123 are disposed opposite to each other along the thickness direction of the hub 110, and the second portion 122 is disposed between the first portion 121 and the third portion 123 and is fixedly connected to the first portion 121 and the third portion 123, respectively, and the three portions may be integrally formed. The third portion 123 is provided with a second hole, so that the connecting bolt 130 passes through the third portion 123 and the hub 110. As shown in fig. 4 and 5, two rows of the first holes 101 are provided on the hub 110 corresponding to each of the spokes 120, and two rows of the connecting bolts 130 are provided for each of the spokes 120, so that each of the spokes 120 can be fixed to the hub 110 by two rows of the connecting bolts 130.

As shown in fig. 2, the supporting block 140 is fixedly coupled to the hub 110 by a fixing bolt 160. The support block 140 is also threadedly coupled to the adjustment screw 150, and the adjustment screw 150 is threadedly engaged with the nut 151. The nut 151 is rotated relative to the adjustment screw 150 such that the nut 151 abuts the support block 140, thereby enabling the adjustment screw 150 to be locked with the support block 140.

The connecting bolt 130 may be a high-strength structural bolt having a bolt strength rating of 10.9, so that the connecting bolt 130 can be prevented from being sheared as much as possible.

The hub 110 has a first surface (not shown) across its thickness and the spokes 120 have a second surface (not shown) against which the first surface abuts. Wherein one of the first and second surfaces is sand blasted and the other is zinc paint coated to increase the friction between the hub 110 and the spokes 120, thereby further preventing the force from the spokes 120 from being transmitted to the connecting bolts 130 and further preventing the connecting bolts 130 from being sheared.

In one embodiment, along the length direction X of the spokes 120, one end of the supporting block 140 facing away from the corresponding spoke 120 abuts against the hub 110.

Specifically, referring to fig. 2, 4 and 5, in the present embodiment, the surface of the hub 110 is provided with a plurality of first grooves 103 recessed in the thickness direction, and the first grooves 103 correspond to the spokes 120 one to one, and thus correspond to the supporting blocks 140 one to one. The supporting blocks 140 are disposed in the corresponding first grooves 103. Along the length direction X of the spokes 120, one end of the supporting block 140 facing away from the corresponding spoke 120 abuts against the side wall of the corresponding first groove 103, i.e. the hub 110.

Because along the length direction X of the spoke 120, the end of the supporting block 140 opposite to the corresponding spoke 120 abuts against the hub 110, when the spoke 120 is pressed along the length direction X, the pressure is transmitted to the supporting block 140 through the adjusting screw 150, so that the supporting block 140 transmits the pressure to the hub 110, and the end of the supporting block 140 opposite to the corresponding spoke 120 extrudes the hub 110, so that the pressure applied to the spoke 120 along the length direction X is indirectly transmitted to the hub 110, thereby further reducing the force applied to the connecting bolt 130 from the spoke 120 along the length direction X (i.e. the shearing force applied to the connecting bolt 130).

Further, in one embodiment, the first ends 120a of the spokes 120 are mounted in the corresponding first grooves 103, which facilitates positioning of the spokes 120 during mounting.

In one embodiment, along the length direction X of the spokes 120, one end of the supporting block 140 facing the corresponding spoke 120 abuts against the hub 110.

Specifically, as shown in fig. 5, in the present embodiment, the first groove 103 has a bottom wall 103a facing in the thickness direction of the hub 110. The bottom wall 103a is provided with a second groove 104 recessed in the thickness direction of the boss 110. The supporting block 140 is disposed in the second groove 104. Along the length direction X of the spokes 120, one end of the support block 140 facing the corresponding spoke 120 abuts against a side wall of the second groove 104, i.e., the hub 110.

Because the end of the supporting block 140 facing the corresponding spoke 120 abuts against the hub 110 along the length direction X of the spoke 120, when the spoke 120 is pulled along the length direction X, the pulling force is transmitted to the supporting block 140 through the adjusting screw 150, and the pulling force applied to the supporting block 140 is transmitted to the hub 110, so that the end of the supporting block 140 facing the corresponding spoke 120 presses the hub 110, and the pulling force applied to the spoke 120 along the length direction X is indirectly transmitted to the hub 110, thereby further reducing the force applied to the connecting bolt 130 from the spoke 120 along the length direction X (i.e., the shearing force applied to the connecting bolt 130).

Further, the supporting blocks 140 are installed in the corresponding second grooves 104, so that the supporting blocks 140 can be conveniently positioned when being installed.

As shown in fig. 5, in the present embodiment, the second grooves 104 are provided at the ends of the first grooves 103 along the length direction of the spokes 120, and therefore, the side walls of the ends of the first grooves 103 along the length direction X of the spokes 120 are also the side walls of the second grooves 104. That is, when the end of the supporting block 140 facing away from the corresponding spoke 120 abuts against the sidewall of the first groove 103 in the longitudinal direction X of the spoke 120, the end abuts against the sidewall of the second groove 104.

Referring to fig. 2 to 5, in an embodiment, the supporting block 140 includes: a connecting portion 141 and a supporting portion 142.

The connecting portion 141 is disposed in the second groove 104 and is fixedly connected to the hub 110. Along the length direction X of the spokes 120, one end of the connecting portion 141 facing away from the corresponding spoke 120 abuts against a side wall of the first groove 103, and one end of the connecting portion 141 facing the corresponding spoke 120 abuts against a side wall of the second groove 104.

The supporting portion 142 is fixedly connected (e.g., integrally formed) with the connecting portion 141. The supporting portion 142 extends out of the first groove 103 in the thickness direction of the hub 110, and thus protrudes from the surface of the hub 110 in the thickness direction. The protruding portion of the supporting portion 142 protruding from the surface of the hub 110 is threadedly coupled to the corresponding adjustment screw 150.

The adjusting screw 150 is located on one side in the thickness direction of the hub 110. Since the protruding portion of the supporting portion 142 protruding from the surface of the hub 110 is threadedly coupled to the corresponding adjusting screw 150, the supporting block 140 is easily threadedly coupled to the corresponding adjusting screw 150. The connecting portions 141 are disposed in the second grooves 104, so that the two ends of the supporting blocks 140 along the length direction X of the spokes 120 are respectively abutted to the hub 110.

In an embodiment, the thickness direction Y of the hub 110 is taken as the longitudinal direction, the cross-sectional area of the connecting portion 141 is larger than that of the supporting portion 142, and the connecting portion 141 is tightly attached to the surface of the hub 110 in the thickness direction, so that the contact area between the supporting block 140 and the hub 110 is as large as possible, and the connection strength between the supporting block 140 and the hub 110 can be further improved. Particularly, in the present embodiment, the connecting portion 141 is closely attached to the bottom wall of the second groove 104.

Referring to fig. 2, 3 and 5, in an embodiment, along the length direction X of the spoke 120, the supporting portion 142 is disposed at an end (i.e., the left end in fig. 3) of the connecting portion 141 away from the corresponding spoke 120, so that an accommodating space is left between the supporting portion 142 and the spoke 120 along the length direction X of the spoke 120, and the nut 151 is disposed between the supporting portion 142 and the corresponding spoke 120 along the length direction X of the spoke 120 to fix the adjusting screw 150 and the supporting portion 142.

Referring to fig. 2 and 5, in an embodiment, the connecting portions 141 and the corresponding first ends 120a of the spokes 120 are spaced apart from each other along the length direction X of the spokes 120, so that when the adjusting screws 150 drive the spokes 120 to adjust the positions along the length direction X of the spokes 120, the spokes 120 can have a moving space along the length direction X, thereby facilitating the adjustment of the mounting positions of the spokes 120 to adjust the mounting gaps between the spokes 120 and the hub 110.

Referring to fig. 2 and 5, in one embodiment, the hub and spoke attachment structure 100 of the drum filter further includes a plurality of filler blocks 170.

A filling block 170 is disposed between the connection portion 141 and the first end 120a of the corresponding spoke 120 along the length direction X of the spoke 120. The connecting portion 141 and the first end 120a of the corresponding spoke 120 are respectively adjacent to the corresponding filling block 170, so that when the spoke 120 is pressed along the length direction X thereof, the pressure from the spoke 120 can be transmitted to the filling block 170, transmitted to the connecting portion 141 through the filling block 170, and transmitted to the side wall of the first groove 103 through the connecting portion 141, i.e., transmitted to the hub 110.

In one embodiment, the connection portions 141 and the corresponding spokes 120 are respectively welded to the corresponding filling blocks 170, so that the filling blocks 170 can be detached by grinding the welding seams between the filling blocks 170 and the connection portions 141 and between the filling blocks 170 and the corresponding spokes 120.

When the installation gap between the hub 110 and the spoke 120 needs to be adjusted, the filling block 170 is detached, and then the position of the spoke 120 along the length direction X is adjusted by rotating the adjusting screw 150 to adjust the distance between the spoke 120 and the connecting portion 141, so that the installation gap between the hub 110 and the spoke 120 can be adjusted.

After the adjustment of the mounting gap between the hub 110 and the spoke 120 is completed, the replaced filling block 170 can be made to adapt to the adjusted mounting gap between the hub 110 and the spoke 120 again by replacing the smaller or larger filling block 170, and the replaced filling block 170 is disposed between the connecting portion 141 and the spoke 120, and is next to the connecting portion 141 and the spoke 120.

An embodiment of the present application also provides a drum screen (not shown). The drum screen (not shown) includes: the hub to spoke attachment structure 100 and screen body of a drum screen of any of the above embodiments. The screen body is connected to the second ends 120b of the plurality of spokes 120.

In the drum filter screen, under the action of water pressure and gravity, the force (tension or pressure) applied to the spoke 120 in the length direction X is transmitted to the supporting block 140 through the adjusting screw 150, so that the force applied to the connecting bolt 130 in the length direction X of the spoke 120 (i.e., the shearing force applied to the connecting bolt 130) is reduced, and the risk and the potential safety hazard that the connecting bolt 130 is sheared are reduced. In addition, when spoke 120 is installed to wheel hub 110, because can drive through adjusting screw 150 and follow its length direction adjusting position along spoke 120 to through establishing one in second hole and the first hole into the bar hole, thereby can pass through connecting bolt 130 with both fixed after adjusting spoke 120 and wheel hub 110's installation clearance, and then be favorable to guaranteeing the meshing precision of the ring gear of drum-shaped filter screen and drive arrangement's gear, with the required precision of satisfying drum-shaped filter screen.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.