阅读说明：本技术 一种混凝土搅拌站全天候水泥输送装置 (All-weather cement conveying device for concrete mixing plant ) 是由 杨荣杰 于 2021-08-15 设计创作，主要内容包括：本发明公开了一种混凝土搅拌站全天候水泥输送装置,包括管体,所述管体一侧顶部壁体上设有万向进料口,所述管体底部一侧壁体上设有出料口,所述管体内设有两个转轴,两个所述转轴外壁分别设有螺旋叶片,两个所述转轴之间通过螺旋叶片固定连接,所述管体一侧还设有减速电机。本发明所述的一种混凝土搅拌站全天候水泥输送装置,通过具有固紧机构的限位连接轴的设置,并配合其两个转轴内的第一固定腔体,能够将两个螺旋桨叶上的转轴快速的固定连接并防止其在搬运时脱离而影响后续的生产,另外通过其电机外侧的能够快速拆卸与安装的防护罩设置,能防止其电机受雨水侵蚀,并通过外罩与内罩的设置,能够保证防雨的同时不影响其透气散热。(The invention discloses an all-weather cement conveying device for a concrete mixing plant, which comprises a pipe body, wherein a universal feeding hole is formed in the wall body of the top of one side of the pipe body, a discharging hole is formed in the wall body of one side of the bottom of the pipe body, two rotating shafts are arranged in the pipe body, helical blades are respectively arranged on the outer walls of the two rotating shafts, the two rotating shafts are fixedly connected through the helical blades, and a speed reducing motor is further arranged on one side of the pipe body. According to the all-weather cement conveying device for the concrete mixing station, the limiting connecting shaft with the fastening mechanism is arranged and matched with the first fixing cavities in the two rotating shafts, the rotating shafts on the two propeller blades can be quickly and fixedly connected, the propeller blades are prevented from being separated during carrying to influence subsequent production, in addition, the motors can be prevented from being corroded by rainwater through the arrangement of the protective covers which can be quickly disassembled and assembled on the outer sides of the motors, and the air permeability and heat dissipation of the concrete mixing station can be prevented from being influenced while rain proofing is guaranteed through the arrangement of the outer cover and the inner cover.)

1. The all-weather cement conveying device for the concrete mixing plant is characterized in that: including body (1), be equipped with universal feed inlet (2) on body (1) one side top wall body, be equipped with discharge gate (3) on body (1) bottom one side wall body, be equipped with two pivot (4) in body (1), two pivot (4) outer wall is equipped with helical blade (5) respectively, two through helical blade (5) fixed connection between pivot (4), body (1) one side still is equipped with gear motor (7), gear motor (7) outside is equipped with protection casing (8).

2. The all-weather cement conveying device for the concrete mixing plant according to claim 1, wherein: two first fixed cavity (9) have been seted up respectively in pivot (4) one side wall body, a plurality of spacing groove (10) have been seted up on the wall body in first fixed cavity (9) in pivot (4), draw-in groove (11) have still been seted up in spacing groove (10) one side wall body in pivot (4), screw (12) have been seted up on pivot (4) one side front end wall body, and screw (12) communicate with first fixed cavity (9).

3. The all-weather cement conveying device for the concrete mixing plant according to claim 1, wherein: the limiting connecting shaft (6) comprises a shaft body (13), a plurality of limiting blocks (14) are fixedly mounted on the outer walls of the two sides of the shaft body (13) respectively, and a fastening mechanism (15) is further arranged in the shaft body (13).

4. The all-weather cement conveying device for the concrete mixing plant according to claim 3, wherein: fastening device (15) are equipped with screw block (16) in the fixed screw hole of axis body (13) one side intermediate position, screw block (16) screw in is installed in the fixed screw hole of axis body (13) one side intermediate position, fixed mounting has first toper piece (17) on the wall body of screw block (16) one side front end, and in first toper piece (17) extended to the cavity in axis body (13), interior hexagonal groove (18) have been seted up in screw block (16) back wall body.

5. The all-weather cement conveying device for the concrete mixing plant according to claim 3, wherein: fastening device (15) still seted up second fixed cavity (19) in axis body (13), fixed cavity (19) interior both sides wall body of second is respectively fixed mounting have first solid fixed ring (20), two be equipped with head rod (21) in first solid fixed ring (20), two head rod (21) alternate respectively and install in corresponding first solid fixed ring (20), head rod (21) fixed mounting has an annular first dog (22) on the outer wall that is located first solid fixed ring (20) one side, and head rod (21) fixed mounting has an annular second dog (23) on the outer wall that is located first solid fixed ring (20) opposite side, still the cover is equipped with first compression spring (24) on head rod (21) that still is equipped with on head rod (21) one side outer wall of head rod (21), first compression spring (24) are located first solid fixed ring (20) one side fixed slot and head rod (22) between first dog (22) and the first solid fixed ring (20) one side The connecting device is characterized in that a second conical block (25) is fixedly mounted on one side wall body of the first connecting rod (21), and a plurality of clamping mechanisms (26) are arranged at two ends of a second fixed cavity (19) in the shaft body (13) and close to one side wall body of the corresponding second conical block (25).

6. The all-weather cement conveying device for the concrete mixing plant according to claim 5, wherein: the clamping mechanism (26) is respectively provided with a second connecting rod (27) in corresponding fixed holes in wall bodies at two ends of the shaft body (13), the second connecting rods (27) are inserted into the fixing holes of the wall body of the corresponding shaft body (13), and the second connecting rod (27) extends into the second fixed cavity (19), an arc-shaped block (28) is fixedly arranged at one end of the second connecting rod (27) positioned in the first fixed cavity (9), a second compression spring (29) is sleeved on the outer wall of the second connecting rod (27), and the second compression spring (29) is positioned on a second connecting rod (27) between the inner wall of the second fixed cavity (19) and the arc-shaped block (28), a clamping block (30) is fixedly mounted at the bottom of the second connecting rod (27), and the clamping block (30) is located in an opening in a corresponding limiting block (14) on the shaft body (13).

7. The all-weather cement conveying device for the concrete mixing plant according to claim 1, wherein: protection casing (8) are including dustcoat (31) and inner cover (32), dustcoat (31) and inner cover (32) both ends are respectively for sealing fixed connection through the fixed plate, respectively fixed mounting has first blow vent (33) of a plurality of on dustcoat (31) inner wall, on inner cover (32) outer wall respectively fixed mounting have a plurality of second blow vent (34), and crisscross the distribution between inner cover (32) and second blow vent (34), fixed mounting has the solid fixed ring of round second (35) on dustcoat (31) and inner cover (32) opposite side fixed plate, be equipped with a plurality of fixed establishment (36) on the solid fixed ring of second (35), fixed mounting is then on gear motor (7) one side outer wall through fixed establishment (36) on the solid fixed ring of second (35) for dustcoat (31) and inner cover (32).

8. The all-weather cement conveying device for the concrete mixing plant according to claim 7, wherein: the fixing mechanism (36) is fixedly provided with a plurality of first fixing blocks (37) on the outer wall of the second fixing ring (35), a screw rod (38) is arranged in the first fixing block (37), the screw rod (38) is screwed into a fixing threaded hole in the first fixing block (37) and passes through a through hole in the wall body of the second fixing ring (35) to extend into the second fixing ring (35), and one side of the screw rod (38) is fixedly provided with a knob (39), the other side is fixedly provided with a T-shaped block (40), a second fixed block (41) is arranged on the T-shaped block (40), a rotary groove (43) is arranged in the wall body in the middle of one side of the second fixed block (41), the second fixed block (41) is arranged on the T-shaped block (40) in a penetrating way through the rotary groove (43), and an arc-shaped rubber pad (42) is fixedly arranged on the other side wall body of the second fixing block (41).

Technical Field

The invention relates to the technical field of conveying equipment, in particular to an all-weather cement conveying device for a concrete mixing plant.

Background

The concrete mixing plant mainly comprises 5 major systems such as a mixing host, a material weighing system, a material conveying system, a material storage system, a control system and the like and other accessory facilities, the metering time is saved, the production efficiency is greatly improved, in the process of concrete production of the concrete mixing plant, the raw materials such as stones, gravels, cement and the like can be conveyed to the proportioning mechanism through various conveying devices, the subsequent mixing process operation is facilitated, particularly, in the cement conveying process, a screw conveyor is used for conveying the cement in a cement tank to the proportioning mechanism so as to facilitate the subsequent process operation, the screw conveyor is a machine which utilizes a motor to drive a screw to rotate and push the material to achieve the conveying purpose, but the traditional screw conveyor is generally fixedly connected between two helical blades in the screw conveyor through a spline shaft, but because integral key shaft one end is fixed on its body inner wall to both ends can not be fine with two pivot fixed connection, lead to appearing becoming flexible easily when the transport, thereby the condition that the pivot drops from the integral key shaft appears, and follow-up dredging the inspection and leading to breaking down when producing, in addition, general screw conveyer's motor all exposes outdoors, receives the erosion of rainwater easily, leads to the motor to break down and influence production.

Disclosure of Invention

The invention aims to provide an all-weather cement conveying device for a concrete mixing plant, which can effectively solve the problems in the background art.

In order to achieve the purpose, the invention adopts the technical scheme that:

the all-weather cement conveying device comprises a pipe body, wherein a universal feed inlet is formed in the top wall body of one side of the pipe body, a discharge outlet is formed in the side wall body of the bottom of the pipe body, two rotating shafts are arranged in the pipe body, the outer walls of the rotating shafts are respectively provided with a helical blade, the two rotating shafts are fixedly connected through the helical blade, a speed reducing motor is further arranged on one side of the pipe body, and a protective cover is arranged on the outer side of the speed reducing motor.

Preferably, two first fixed cavities are respectively arranged in the wall bodies on one side of the rotating shaft, a plurality of limiting grooves are formed in the wall body of the rotating shaft on the first fixed cavity, a clamping groove is formed in the wall body on one side of the limiting groove of the rotating shaft, a screw hole is formed in the wall body at the front end on one side of the rotating shaft, and the screw hole is communicated with the first fixed cavity.

Preferably, the limiting connecting shaft comprises a shaft body, a plurality of limiting blocks are fixedly mounted on the outer walls of the two sides of the shaft body respectively, and a fastening mechanism is further arranged in the shaft body.

Preferably, the fastening mechanism is provided with a thread block in a fixed thread hole at the middle position on one side of the shaft body, the thread block is screwed in the fixed thread hole at the middle position on one side of the shaft body, a first conical block is fixedly mounted on the wall body at the front end on one side of the thread block, the first conical block extends into the cavity in the shaft body, and an inner hexagonal groove is formed in the wall body at the back of the thread block.

Preferably, the fastening mechanism further includes a second fixing cavity formed in the shaft body, first fixing rings are respectively and fixedly mounted on wall bodies on two sides in the second fixing cavity, two first connecting rods are respectively and fixedly mounted in the first fixing rings, the two first connecting rods are respectively and alternately mounted in the corresponding first fixing rings, an annular first stop block is fixedly mounted on an outer wall on one side of each first fixing ring, an annular second stop block is fixedly mounted on an outer wall on the other side of each first fixing ring, a first compression spring is further sleeved on the outer wall on one side of each first connecting rod, the first compression spring is located on the first connecting rod between the fixing groove on one side of each first fixing ring and the first stop block, a second taper block is fixedly mounted on the wall body on one side of each first connecting rod, and a plurality of second taper blocks are arranged in wall bodies on one side of the shaft body, at two ends of the second fixing cavity, close to the corresponding second taper blocks, on one side of the wall bodies A bit mechanism.

Preferably, the screens mechanism is equipped with the second connecting rod in the fixed orifices that corresponds in the axis body both ends wall body respectively, the second connecting rod alternates to be installed in the fixed orifices of the wall body of the axis body that corresponds, and in the second connecting rod extended to the second fixed cavity, the one end fixed mounting of second connecting rod in lieing in first fixed cavity has the arc piece, it has second compression spring still to overlap on the second connecting rod outer wall, and second compression spring lies in the second connecting rod between second fixed cavity inner wall and the arc piece, second connecting rod bottom fixed mounting has the fixture block, the fixture block is arranged in the opening in the corresponding stopper on the axis body.

Preferably, the protection casing includes dustcoat and inner cover, dustcoat and inner cover both ends are respectively for sealing fixed connection through the fixed plate, on the dustcoat inner wall respectively fixed mounting have the first blow vent of a plurality of, on the inner cover outer wall respectively fixed mounting have a plurality of second blow vent, and crisscross distribution between inner cover and the second blow vent, fixed mounting has the solid fixed ring of round second on dustcoat and the inner cover opposite side fixed plate, be equipped with a plurality of fixed establishment on the solid fixed ring of second, dustcoat and inner cover then through the solid fixed mounting of the solid fixed ring of second on gear motor one side outer wall, through the setting of dustcoat and inner cover, can guarantee to ventilate radiating while, prevent that the rainwater from drenching on the motor.

Preferably, fixed establishment fixed mounting has the first fixed block of a plurality of on the solid fixed ring outer wall of second, be equipped with the screw rod in the first fixed block, the screw rod screw in is installed in the fixed screw hole in first fixed block and is passed the through-hole on the solid fixed ring wall body of second and extend to the second fixed ring in, and screw rod one side fixed mounting has the knob, and opposite side fixed mounting has T type piece, be equipped with the second fixed block on the T type piece, the rotary groove has been seted up in the wall body of second fixed block one side intermediate position, the second fixed block is installed on T type piece through the rotary groove interlude, fixed mounting has the arc rubber pad on the second fixed block opposite side wall body, through fixed establishment's setting, can dismantle and install the quick follow motor of protection casing.

Compared with the prior art, the invention has the following beneficial effects:

according to the all-weather cement conveying device for the concrete mixing station, the limiting connecting shaft with the fastening mechanism is arranged and matched with the first fixing cavities in the two rotating shafts, the rotating shafts on the two propeller blades can be quickly and fixedly connected, the propeller blades are prevented from being separated during carrying to influence subsequent production, in addition, the motors can be prevented from being corroded by rainwater through the arrangement of the protective covers which can be quickly disassembled and assembled on the outer sides of the motors, and the air permeability and heat dissipation of the concrete mixing station can be prevented from being influenced while rain proofing is guaranteed through the arrangement of the outer cover and the inner cover.

Drawings

FIG. 1 is an exploded view of the main structure of the present invention;

FIG. 2 is a side view of the spindle of the present invention;

FIG. 3 is a schematic view of the structure of the limiting connecting shaft of the present invention;

FIG. 4 is a cross-sectional view of a spacing connecting shaft of the present invention;

FIG. 5 is a cross-sectional view of a shield of the present invention;

FIG. 6 is a side view of the shield of the present invention;

FIG. 7 is an exploded view of the securing mechanism of the present invention;

fig. 8 is an enlarged view of a portion a in fig. 4.

In the figure: 1. a pipe body; 2. a universal feed port; 3. a discharge port; 4. a rotating shaft; 5. a helical blade; 6. a limiting connecting shaft; 7. a reduction motor; 8. a protective cover; 9. a first fixed cavity; 10. a limiting groove; 11. a card slot; 12. a screw hole; 13. a shaft body; 14. a limiting block; 15. a fastening mechanism; 16. a thread block; 17. a first tapered block; 18. an inner hexagonal groove; 19. a second fixed cavity; 20. a first retaining ring; 21. a first connecting rod; 22. a first stopper; 23. a second stopper; 24. a first compression spring; 25. a second tapered block; 26. a clamping mechanism; 27. a second connecting rod; 28. an arc-shaped block; 29. a second compression spring; 30. a clamping block; 31. a housing; 32. an inner cover; 33. a first vent; 34. a second vent; 35. a second retaining ring; 36. a fixing mechanism; 37. a first fixed block; 38. a screw; 39. a knob; 40. a T-shaped block; 41. a second fixed block; 42. an arc-shaped rubber pad; 43. and (6) rotating the groove.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-8, the all-weather cement conveying device for the concrete mixing plant provided by the invention comprises a pipe body 1, wherein a universal feed inlet 2 is arranged on the top wall body on one side of the pipe body 1, a discharge outlet 3 is arranged on the side wall body on the bottom of the pipe body 1, two rotating shafts 4 are arranged in the pipe body 1, helical blades 5 are respectively arranged on the outer walls of the two rotating shafts 4, the two rotating shafts 4 are fixedly connected through the helical blades 5, a speed reducing motor 7 is further arranged on one side of the pipe body 1, and a protective cover 8 is arranged on the outer side of the speed reducing motor 7.

One side of each of the two rotating shafts 4 is respectively provided with a first fixing cavity 9, the rotating shafts 4 are respectively provided with a plurality of limiting grooves 10 on the inner wall of the first fixing cavity 9, the rotating shafts 4 are also provided with a clamping groove 11 in one side wall of the limiting grooves 10, the front end wall of one side of each of the rotating shafts 4 is provided with a screw hole 12, the screw holes 12 are communicated with the first fixing cavity 9, each limiting connecting shaft 6 comprises a shaft body 13, the outer walls of two sides of the shaft body 13 are respectively and fixedly provided with a plurality of limiting blocks 14, a fastening mechanism 15 is also arranged in the shaft body 13, the fastening mechanism 15 is provided with a thread block 16 in a fixing threaded hole at the middle position of one side of the shaft body 13, the thread block 16 is screwed in a fixing threaded hole at the middle position of one side of the shaft body 13, the front end wall body at one side of the thread block 16 is fixedly provided with a first conical block 17, the first conical block 17 extends into the inner cavity of the shaft body 13, the back wall body of the thread block 16 is provided with an inner hexagonal groove 18, the fastening mechanism 15 further has a second fixing cavity 19 formed in the shaft body 13, two side walls of the second fixing cavity 19 are respectively and fixedly provided with a first fixing ring 20, two first fixing rings 20 are respectively provided with a first connecting rod 21, two first connecting rods 21 are respectively and penetratingly installed in the corresponding first fixing rings 20, the first connecting rod 21 is fixedly provided with an annular first stop 22 on an outer wall of one side of the first fixing ring 20, the first connecting rod 21 is fixedly provided with an annular second stop 23 on an outer wall of the other side of the first fixing ring 20, the outer wall of one side of the first connecting rod 21 is further sleeved with a first compression spring 24, the first compression spring 24 is positioned on the first connecting rod 21 between a fixing groove of one side of the first fixing ring 20 and the first stop 22, a second taper 25 is fixedly installed on a wall body of one side of the first connecting rod 21, two ends of the second fixing cavity 19 in the shaft body 13 are provided with a plurality of second taper blocks 25 near one side of the corresponding second taper blocks 25 A plurality of clamping mechanisms 26, the clamping mechanisms 26 are respectively provided with a second connecting rod 27 in corresponding fixed holes in wall bodies at two ends of the shaft body 13, the second connecting rods 27 are installed in the fixed holes of the wall bodies of the corresponding shaft body 13 in an inserting manner, the second connecting rods 27 extend into the second fixed cavity 19, one end of each second connecting rod 27 positioned in the first fixed cavity 9 is fixedly provided with an arc-shaped block 28, the outer wall of each second connecting rod 27 is further sleeved with a second compression spring 29, the second compression spring 29 is positioned on the second connecting rod 27 between the inner wall of the second fixed cavity 19 and the arc-shaped block 28, the bottom of each second connecting rod 27 is fixedly provided with a fixture block 30, the fixture block 30 is positioned in an opening in the corresponding limit block 14 on the shaft body 13, the protective cover 8 comprises an outer cover 31 and an inner cover 32, two ends of the outer cover 31 and the inner cover 32 are respectively fixedly connected in a closed manner through a fixed plate, the inner wall of the outer cover 31 is respectively fixedly provided with a plurality of first vent holes 33, a plurality of second vent holes 34 are respectively and fixedly installed on the outer wall of the inner cover 32, the inner cover 32 and the second vent holes 34 are distributed in a staggered manner, a circle of second fixing ring 35 is fixedly installed on a fixing plate on the other side of the outer cover 31 and the inner cover 32, a plurality of fixing mechanisms 36 are arranged on the second fixing ring 35, the outer cover 31 and the inner cover 32 are fixedly installed on the outer wall on one side of the speed reducing motor 7 through the fixing mechanisms 36 on the second fixing ring 35, a plurality of first fixing blocks 37 are fixedly installed on the outer wall of the second fixing ring 35 through the fixing mechanisms 36 on the second fixing ring 36, a screw 38 is arranged in the first fixing blocks 37, the screw 38 is screwed into a fixing threaded hole installed in the first fixing block 37 and extends into the second fixing ring 35 through a through hole on the wall body of the second fixing ring 35, a knob 39 is fixedly installed on one side of the screw 38, a T-shaped block 40 is fixedly installed on the other side of the screw 38, and a second fixing block 41 is arranged on the T-shaped block 40, a rotating groove 43 is formed in the wall body in the middle of one side of the second fixing block 41, the second fixing block 41 is installed on the T-shaped block 40 through the rotating groove 43 in a penetrating mode, and an arc-shaped rubber pad 42 is fixedly installed on the wall body on the other side of the second fixing block 41.

It should be noted that, when the all-weather cement conveying device for a concrete mixing plant is used, when the helical blade 5 needs to be installed, the helical blade is only required to be clamped into the internal hexagonal groove 18 at the outer side of the thread block 16 on the shaft body 13 between the two rotating shafts 4 by a hexagonal wrench, then the hexagonal wrench can be rotated to drive the thread block 16 to rotate in the fixed threaded hole at one side of the shaft body 13, and further the first tapered block 17 is driven to move towards the inner side wall body direction of the second fixed cavity 19 by the gradual screwing of the thread block 16 into the second fixed cavity 19, and further the first tapered block 17 is driven to gradually squeeze the first connecting rods 21 at the two sides towards the two sides by the first tapered block 17, so that the two first connecting rods 21 respectively move towards one side on the corresponding first fixed ring 20 in the second fixed cavity 19, and further the first compression springs 24 are compressed towards the corresponding first fixed ring 20 by the first stoppers 22 on the first connecting rods 21, then the two first connecting rods 21 respectively drive the second taper blocks 25 at one side to move towards one side of the plurality of arc blocks 28 at one side in the second fixed cavity 19, and further the corresponding second taper blocks 25 gradually squeeze the plurality of arc blocks 28 towards one side, and further the corresponding second connecting rods 27 move outwards along the through holes in the shaft body 13 through the corresponding arc blocks 28, and further the corresponding second compression springs 29 on the second connecting rods 27 are compressed through the arc blocks 28, and then the plurality of arc blocks 28 at two sides in the second fixed cavity 19 respectively drive the clamping blocks 30 at one end of the second connecting rods 27 to squeeze out the bayonet of the outer wall of the shaft body 13, and clamp the clamping blocks 30 into the corresponding clamping grooves 11 on the wall body of the first fixed cavity 9 in the rotating shaft 4, namely the limiting blocks 14 on the outer wall of the shaft body 13 are inserted and connected with the limiting grooves 10 in the first fixed cavity 9 in the rotating shaft 4 through the limiting blocks 14 on the outer wall of the shaft body 13, the sliding of the two rotating shafts is prevented, in addition, the corresponding clamping blocks 30 are clamped into the corresponding clamping grooves 11 in the first fixing cavities 9 on the two rotating shafts 4, so that the two rotating shafts 4 are prevented from falling off when the rectification equipment is carried, and then, the accident caused by the subsequent inspection is avoided, when the two spiral blades 5 need to be maintained or replaced, only the thread blocks 16 need to be turned over by an external hexagonal wrench, namely, the corresponding first connecting rods 21 can be returned by the first compression springs 24 on one sides of the two first connecting rods 21, and further the corresponding second conical blocks 25 are separated from the plurality of arc blocks 28, so that the second connecting rods 27 can retract the clamping blocks 30 into the corresponding openings on the wall body of the shaft body 13 through the corresponding second compression springs 29, the two rotating shafts 4 can be separated from the shaft body 13, when the protective cover 8 needs to be installed outside the speed reduction motor 7, the inner cover 32 is first nested outside the reduction motor 7 through the second fixing ring 35 on one side, and the reduction motor 7 is positioned inside the inner cover 32, and then, the knob 39 on both sides of the second fixing ring 35 can be rotated to drive the screw 38 to rotate in the fixing threaded hole on the first fixing block 37, and the T-shaped block 40 at one side of the screw 38 drives the second fixed block 41 to gradually move towards the outer wall of the speed reducing motor 7, meanwhile, the screw rod 38 rotates in the rotary groove 43 through the T-shaped block 40, so that the arc-shaped rubber pad 42 is prevented from driving the second fixed block 41 to rotate together when being attached to the outer wall of the speed reducing motor 7, after the two screws 38 respectively drive the corresponding arc-shaped rubber pads 42 to cling to the outer wall of the speed reducing motor 7, the remaining two fixing mechanisms 36 can be operated in the same manner as above, and the rainwater flowing into the outer cover 31 can flow out through the plurality of water outlets at the bottom.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.