CN109138464B

CN109138464B - Windowsill dust cover for building

Info

Publication number: CN109138464B
Application number: CN201811092313.9A
Authority: CN
Inventors: 吴梓萱; 丁火生
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-09-19
Filing date: 2018-09-19
Publication date: 2020-11-13
Anticipated expiration: 2038-09-19
Also published as: CN109138464A

Abstract

The invention relates to a dust cover, in particular to a dust cover for a window sill for a building. The technical problems of the invention are as follows: the utility model provides a can protect the aluminum alloy window, protect effectually to windowsill dust cover for building that facilitates the use. The technical implementation scheme of the invention is as follows: a dust cover for a building windowsill comprises a transverse plate, a first vertical plate, a push rod, a u-shaped frame, a first spring, a first rubber plate, an inserted rod, a second spring, a second vertical plate and the like; a first vertical plate is installed on the right side of the bottom of the transverse plate, a first through hole is formed in the lower portion of the first vertical plate, push rods are arranged in the first through hole, slots are formed in the bottoms of the push rods at even intervals, and a u-shaped frame is installed at the left end of each push rod. The movable conical plate and the fixed conical plate have the advantages that falling sundries can be blocked, large sundries can be blocked, the movable conical plate and the fixed conical plate are not easy to damage, the sundries adhered to the fixed conical plate can be vibrated to fall off through the knocking device, and the condition that the movable conical plate cannot reset is avoided.

Description

Windowsill dust cover for building

Technical Field

The invention relates to a dust cover, in particular to a dust cover for a window sill for a building.

Background

In the building construction, in the part of windowsill, constructor can be with the preliminary installation of aluminum alloy window on the windowsill earlier, again to being under construction on every side, debris can drop during the construction often, debris can drop to the aluminum alloy window in, influence the follow-up use of aluminum alloy window, so people can wind the aluminum alloy window with the adhesive tape and protect, nevertheless wind the protection with the adhesive tape with the aluminum alloy window, great debris drop easily pound the adhesive tape rotten, and then lead to the adhesive tape to lose the protection to the aluminum alloy window, and receive the influence time of surrounding environment one long, the adhesive tape is easy ageing rotten.

Disclosure of Invention

In order to overcome the defects that sundries often fall off during construction and fall into an aluminum alloy window to influence the subsequent use of the aluminum alloy window, the invention has the technical problems that: the utility model provides a can protect the aluminum alloy window, protect effectually to windowsill dust cover for building that facilitates the use.

The technical implementation scheme of the invention is as follows: a dust cover for a window sill for a building comprises a transverse plate, a first vertical plate, a push rod, a u-shaped frame, a first spring, a first rubber plate, an insertion rod, a second spring, a second vertical plate, a fixed conical plate, a movable conical plate, a slide block, a screw rod, a nut, an L-shaped rod, a connecting plate, a double-shaft motor and a first bearing seat, wherein the first vertical plate is installed on the right side of the bottom of the transverse plate, a first through hole is formed in the lower portion of the first vertical plate, the push rod is arranged in the first through hole, slots are uniformly formed in the bottom of the push rod at intervals, the u-shaped frame is installed at the left end of the push rod, the first rubber plate is arranged in the u-shaped frame, a plurality of first springs are connected between the right side of the first rubber plate and the right side of the u-shaped frame, a second through hole is formed in the middle of the bottom of the first vertical plate, the second through hole is communicated with the first through hole, the, a second vertical plate is arranged on the left side of the bottom of the transverse plate, a fixed conical plate is arranged on the top of the transverse plate, movable conical plates are arranged on the front side and the rear side of the outer side of the fixed conical plate, the inner side of each movable conical plate is in contact with the outer side of the fixed conical plate, horizontal chutes are symmetrically formed in the front side and the rear side of the middle of the top of the transverse plate, sliding blocks are in sliding fit with the horizontal chutes, first bearing seats are symmetrically arranged on the front side and the rear side of the middle of the top of the transverse plate, screws are connected in the first bearing seats, the threads of the screws on the front side and the rear side are opposite, nuts are arranged on the screws, the bottoms of the nuts are connected with the tops of the sliders, connecting plates are arranged in the middle of the tops of the nuts on the front side and the rear side, L-, a double-shaft motor is arranged in the middle of the top of the transverse plate and positioned between the screw rods on the front side and the rear side, and an output shaft of the double-shaft motor is connected with the inner ends of the screw rods through a coupler.

Optionally, the tapping device comprises a support plate, a second bearing seat, a cam shaft, a u-shaped plate, a first bevel gear, a driving motor, a second bevel gear, a contact plate, a third spring, a rubber ball and a guide rod, wherein the support plate is symmetrically arranged on the front side and the rear side of the middle part of the inner side surface of the fixed conical plate, the second bearing seat is arranged at the bottom of the support plate, the cam shaft is connected between the front side and the rear side of the second bearing seat, the first bevel gear is arranged in the middle part of the cam shaft, the u-shaped plate is symmetrically arranged on the front side and the rear side of the inner side surface of the fixed conical plate, the u-shaped plate is positioned between the front side and the rear side of the support plate, guide holes are uniformly spaced on the u-shaped plate, the guide rod is arranged in each guide hole, and a driving motor is vertically arranged in the middle of the inner side surface of the fixed conical plate, an output shaft of the driving motor is connected with a second bevel gear through a coupler, and the second bevel gear is positioned below the first bevel gear and meshed with the first bevel gear.

Optionally, the movable cone plate further comprises a baffle, a frame body, a stop lever, a contact wheel and a fourth spring, wherein the baffle is installed on the front side of the inner side surface of the front movable cone plate and the rear side of the inner side surface of the rear movable cone plate, the frame body is installed on the outer side surfaces of the front movable cone plate and the rear movable cone plate, the frame body is symmetrically arranged, the stop lever is installed in the front frame body in a rotating mode that the rear side of the bottom in the front frame body and the front side of the bottom in the rear frame body are evenly spaced, the contact wheel is installed at the tail end of the stop lever, the fourth spring is connected between the rear side of the bottom in the front frame body and the front side of the bottom in the front frame body, and the fourth.

Optionally, the rubber sleeve further comprises a sleeve, a sliding rod, a fifth spring and a second rubber plate, a vertical sliding groove is formed in the lower portion of the right side face of the second vertical plate, the sleeve is installed on the left side of the vertical sliding groove at even intervals, the sliding rod is arranged in the sleeve, the fifth spring is connected between the left end of the sliding rod and the left side face in the sleeve, and the second rubber plate is installed between the right ends of the sliding rods.

When the aluminum alloy window is installed on a wall body, an operator can place the device on the aluminum alloy window, the second vertical plate is in contact with the wall body, the push rod is pushed to move leftwards, the insert rod slides on the push rod all the time under the action of the second spring, the push rod moves leftwards to drive the u-shaped frame to move leftwards, the u-shaped frame moves leftwards to drive the first rubber plate to move leftwards, the first rubber plate moves leftwards to contact with the wall body, the push rod is stopped to be pushed, the insert rod is matched with the slot to fix the push rod, the first rubber plate is matched with the second vertical plate to fix the device, the first rubber plate contacts with the wall body all the time under the action of the first spring, the double-shaft motor can be started to rotate forwards to drive the screw rod to rotate forwards, the screw rod drives the nut to move outwards, the nut moves outwards through the connecting plate to drive the L-shaped rod to move outwards, the L-shaped, after the movable conical plate moves outwards to completely block the aluminum alloy window, the double-shaft motor can be closed, and then when constructors construct the periphery of the aluminum alloy window, the movable conical plate and the fixed conical plate can block sundries falling during construction. Similarly, after the construction is accomplished around the aluminum alloy window, can start the rotation of biax motor, the rotation of biax motor drives the screw rod and reverses, and then drive the inside movement of left and right sides activity conical plate, when the inside movement of left and right sides activity conical plate resumes to the normal position, can close the biax motor, operating personnel pulling inserted bar downstream, the second spring is tensile, the inserted bar downstream breaks away from in with the slot, can stimulate the push rod and move right and drive first rubber slab through u type frame and move right and resume to the normal position, loosen the inserted bar again, because of the effect of second spring, the inserted bar upward movement inserts and fixes the push rod in the slot, operating personnel can take off this device.

When this device is fixed on the wall body, and when the movable conical plate outwards removed and fixed conical plate cooperation blocked the aluminum alloy window, operating personnel can start driving motor, driving motor rotates and drives second bevel gear and rotate, second bevel gear rotates and drives first bevel gear and rotate, first bevel gear rotates and drives the camshaft rotation, because of the effect of third spring, the camshaft rotation drives the contact plate and reciprocates, the contact plate reciprocates and drives the guide arm and reciprocate, the guide arm reciprocates and drives the rubber ball and reciprocate, the rubber ball reciprocates and beats vibrations to fixed conical plate, and then will glue the debris vibrations that will glue on fixed conical plate and drop. After the construction around the aluminum alloy window is completed, the driving motor can be closed, the rubber ball stops moving up and down, and the double-shaft motor can be started to rotate reversely to enable the movable conical plate to move inwards and return to the original position. Therefore, the movable tapered plate can be prevented from moving inwards and being incapable of returning to the original position due to the influence of sundries remained on the fixed tapered plate.

When an operator starts the double-shaft motor to rotate forwards, the movable conical plate moves outwards and simultaneously drives the frame body to move outwards, the frame body moves outwards to drive the stop lever to move outwards, the stop lever moves outwards to drive the contact wheel to move outwards, then the stop lever moves outwards to enable the contact wheel to be in contact with the side edge of the aluminum alloy window, after the movable conical plate completely blocks the aluminum alloy window, the double-shaft motor is turned off, and then part of the stop lever moves into the side edge of the aluminum alloy window to block the side edge of the aluminum alloy window, and the stop lever is always in contact with the side edge of the aluminum alloy window under the action of the fourth spring. After the construction around the aluminum alloy window is completed, the double-shaft motor is started to rotate reversely, so that the movable conical plate moves inwards to return to the original position, meanwhile, the stop lever is driven to move inwards to return to the original position, and the double-shaft motor is turned off. Therefore, sundries can be prevented from falling into the side edge of the aluminum alloy window.

When this device was placed on the aluminum alloy window, can make second rubber slab and wall body contact, promoted the push rod inwards to remove again and drive first rubber slab inwardly moving and wall body contact, and then first rubber slab and the cooperation of second rubber slab fix this device on the wall body, because of the effect of fifth spring, the second rubber slab always contacts with the wall body. Therefore, the device can be more stably fixed on the wall body.

The invention has the following advantages: the movable conical plate and the fixed conical plate have the advantages that falling sundries can be blocked, large sundries can be blocked, the movable conical plate is not easy to damage, the sundries adhered to the fixed conical plate can be vibrated to fall off through the knocking device, the condition that the movable conical plate cannot reset is avoided, the side edge of the aluminum alloy window can be blocked through the action of the stop lever, and the sundries are prevented from falling into the side edge of the aluminum alloy window.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a right-view structural diagram of the present invention.

Fig. 3 is an enlarged schematic view of part a of the present invention.

Fig. 4 is an enlarged view of part B of the present invention.

Fig. 5 is an enlarged view of part C of the present invention.

The meaning of the reference symbols in the figures: 1: wall body, 2: aluminum alloy window, 3: transverse plate, 4: first riser, 5: first through hole, 6: push rod, 7: u-shaped frame, 8: first spring, 9: first rubber sheet, 10: slot, 11: second through hole, 12: inserted link, 13: second spring, 14: second riser, 15: fixed cone plate, 16: movable tapered plate, 17: horizontal chute, 18: slider, 19: screw, 20: nut, 21: l-shaped rod, 22: connecting plate, 23: two-shaft motor, 24: first bearing seat, 25: rapping device, 251: a support plate, 252: second bearing housing, 253: camshaft, 254: u-shaped plate, 255: first bevel gear, 256: drive motor, 257: second bevel gear, 258: guide holes, 259: contact plate, 2510: third spring, 2511: rubber ball, 2512: guide rod, 26: baffle, 27: frame, 28: stopper rod, 29: contact wheel, 30: fourth spring, 31: vertical chute, 32: sleeve, 33: slide bar, 34: fifth spring, 35: a second rubber sheet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It is only noted that the invention is intended to be limited to the specific forms set forth herein, including any reference to the drawings, as well as any other specific forms of embodiments of the invention.

Example 1

A dust cover for a window sill for a building is disclosed, as shown in figures 1-5, and comprises a transverse plate 3, a first vertical plate 4, a push rod 6, a u-shaped frame 7, a first spring 8, a first rubber plate 9, an insertion rod 12, a second spring 13, a second vertical plate 14, a fixed conical plate 15, a movable conical plate 16, a slide block 18, a screw rod 19, a nut 20, an L-shaped rod 21, a connecting plate 22, a double-shaft motor 23 and a first bearing seat 24, wherein the first vertical plate 4 is installed on the right side of the bottom of the transverse plate 3, a first through hole 5 is formed at the lower part of the first vertical plate 4, the push rod 6 is arranged in the first through hole 5, slots 10 are uniformly arranged at the bottom of the push rod 6 at intervals, the u-shaped frame 7 is installed at the left end of the push rod 6, the first rubber plate 9 is arranged in the u-shaped frame 7, the first springs 8 are connected between the right side of the first rubber plate 9 and the right side of the u-shaped frame 7, a second, an inserting rod 12 is arranged in the second through hole 11, a second spring 13 is connected between the bottom in the inserting rod 12 and the bottom of the first vertical plate 4, the top end of the inserting rod 12 is positioned in the slot 10 and matched with the slot, the left side of the bottom of the transverse plate 3 is provided with a second vertical plate 14, the top of the transverse plate 3 is provided with a fixed conical plate 15, the front side and the rear side of the outer side of the fixed conical plate 15 are both provided with movable conical plates 16, the inner side of each movable conical plate 16 is contacted with the outer side of the fixed conical plate 15, the front side and the rear side of the middle of the top of the transverse plate 3 are symmetrically provided with horizontal sliding grooves 17, each horizontal sliding groove 17 is internally provided with a sliding block 18, each sliding block 18 is in sliding fit with the horizontal sliding groove 17, the front side and the rear side of the middle of the top of the transverse plate 3 are symmetrically provided with first bearing seats 24, the upper parts of the outer side surfaces of the front and rear side connecting plates 22 are provided with L-shaped rods 21, the top ends of the front L-shaped rods 21 are connected with the front side of the inner side surface of the front movable conical plate 16, the top ends of the rear L-shaped rods 21 are connected with the rear side of the inner side surface of the rear movable conical plate 16, a double-shaft motor 23 is arranged in the middle of the top of the transverse plate 3, the double-shaft motor 23 is positioned between the front and rear side screw rods 19, and the output shaft of the double-shaft motor 23.

Example 2

The multifunctional tapping device further comprises a tapping device 25, the tapping device 25 comprises a support plate 251, a second bearing seat 252, a cam shaft 253, a u-shaped plate 254, a first bevel gear 255, a driving motor 256, a second bevel gear 257, a contact plate 259, a third spring 2510, a rubber ball 2511 and a guide rod 2512, the support plate 251 is symmetrically arranged on the front side and the rear side of the middle part of the inner side surface of the fixed conical plate 15, the second bearing seat 252 is arranged at the bottom of the support plate 251, the cam shaft 253 is connected between the front side and the rear side of the second bearing seat 252, the first bevel gear 255 is arranged in the middle part of the cam shaft 253, the u-shaped plate 254 is symmetrically arranged on the front side and the rear side of the inner side surface of the fixed conical plate 15, the u-shaped plate 254 is positioned between the front side and rear side of the support plate 251, guide holes 258 are uniformly spaced, a guide rod 2512 is arranged in, the third spring 2510 is sleeved on the guide rod 2512, a rubber ball 2511 is mounted at the top end of the guide rod 2512, the driving motor 256 is vertically mounted in the middle of the inner side surface of the fixed conical plate 15, an output shaft of the driving motor 256 is connected with a second bevel gear 257 through a coupler, and the second bevel gear 257 is positioned below the first bevel gear 255 and meshed with the first bevel gear 255.

Example 3

The novel movable conical plate structure is characterized by further comprising a baffle 26, a frame body 27, a stop lever 28, a contact wheel 29 and a fourth spring 30, wherein the baffle 26 is installed on the front side of the inner side surface of the front movable conical plate 16 and the rear side of the inner side surface of the rear movable conical plate 16, the frame body 27 is installed on the outer side of the outer side surface of the front movable conical plate 16 and the outer side of the outer side surface of the rear movable conical plate 16, the frame body 27 is symmetrically arranged, the stop lever 28 is installed in the front frame body 27 in a rotating mode that the rear side of the bottom in the front frame body 27 and the front side of the bottom in the rear frame body 27 are evenly spaced, the contact wheel 29 is installed at the tail end of the stop lever 28, the fourth spring 30 is connected between the rear side of the bottom of the front stop lever 28.

Example 4

Still including sleeve 32, slide bar 33, fifth spring 34 and second rubber slab 35, open the right side lower part of second riser 14 has vertical spout 31, and the sleeve 32 is installed to vertical spout 31 left side evenly spaced, is equipped with slide bar 33 in the sleeve 32, is connected with fifth spring 34 between the left end of slide bar 33 and the interior left surface of sleeve 32, installs second rubber slab 35 between a plurality of slide bar 33 right-hand members.

When the aluminum alloy window 2 is installed on the wall body 1, an operator can place the device on the aluminum alloy window 2, the second vertical plate 14 is in contact with the wall body 1, the push rod 6 is pushed to move leftwards, the inserted rod 12 slides on the push rod 6 all the time under the action of the second spring 13, the push rod 6 moves leftwards to drive the u-shaped frame 7 to move leftwards, the u-shaped frame 7 moves leftwards to drive the first rubber plate 9 to move leftwards, the first rubber plate 9 moves leftwards to be in contact with the wall body 1, the push rod 6 is stopped being pushed, the inserted rod 12 is matched with the slot 10 to fix the push rod 6, the first rubber plate 9 is matched with the second vertical plate 14 to fix the device, the first rubber plate 9 is in contact with the wall body 1 all the time under the action of the first spring 8, the double-shaft motor 23 can be started, the double-shaft motor 23 rotates forwards to drive the screw rod 19 to rotate forwards, the screw rod 19 drives the nut 20 to move outwards, the nut 20 moves, the L-shaped rod 21 moves outwards to drive the movable conical plate 16 to move outwards, the double-shaft motor 23 can be closed after the movable conical plate 16 moves outwards to completely block the aluminum alloy window 2, and then when constructors construct the periphery of the aluminum alloy window 2, the movable conical plate 16 and the fixed conical plate 15 can block sundries falling during construction. Similarly, after the construction around the aluminum alloy window 2 is completed, the double-shaft motor 23 can be started to rotate reversely, the double-shaft motor 23 rotates reversely to drive the screw rod 19 to rotate reversely, further the movable tapered plates 16 on the left and right sides are driven to move inwards, when the movable tapered plates 16 on the left and right sides move inwards and return to the original position, the double-shaft motor 23 can be closed, an operator pulls the insertion rod 12 to move downwards, the second spring 13 is stretched, the insertion rod 12 moves downwards to be separated from the slot 10, the push rod 6 can be pulled to move rightwards to drive the first rubber plate 9 to move rightwards through the u-shaped frame 7 to return to the original position, the insertion rod 12 is loosened, due to the action of the second spring 13, the insertion rod 12 moves upwards to be inserted into the slot 10 to fix the push rod 6.

When the device is fixed on a wall body 1, and the movable conical plate 16 moves outwards to be matched with the fixed conical plate 15 to block the aluminum alloy window 2, an operator can start the driving motor 256, the driving motor 256 rotates to drive the second bevel gear 257 to rotate, the second bevel gear 257 rotates to drive the first bevel gear 255 to rotate, the first bevel gear 255 rotates to drive the cam shaft 253 to rotate, due to the action of the third spring 2510, the cam shaft 253 rotates to drive the contact plate 259 to move up and down, the contact plate 259 moves up and down to drive the guide rod 2512 to move up and down, the guide rod 2512 moves up and down to drive the rubber ball 2511 to move up and down, the rubber ball 2511 moves up and down to beat and shake the fixed conical plate 15, and then. After the construction around the aluminum alloy window 2 is completed, the driving motor 256 is turned off, the rubber ball 2511 stops moving up and down, and the double-shaft motor 23 is started to rotate reversely so that the movable conical plate 16 moves inwards and returns to the original position. Therefore, the movable tapered plate 16 can be prevented from moving inwards and being incapable of returning to the original position due to the influence of sundries remained on the fixed tapered plate 15.

When an operator starts the double-shaft motor 23 to rotate forwards, the movable conical plate 16 moves outwards and simultaneously drives the frame body 27 to move outwards, the frame body 27 moves outwards and drives the stop lever 28 to move outwards, the stop lever 28 moves outwards and drives the contact wheel 29 to move outwards, then the stop lever 28 moves outwards and enables the contact wheel 29 to be in contact with the side edge of the aluminum alloy window 2, after the movable conical plate 16 completely blocks the aluminum alloy window 2, the double-shaft motor 23 is turned off, and then part of the stop lever 28 moves into the side edge of the aluminum alloy window 2 and blocks the side edge of the aluminum alloy window 2, and due to the action of the fourth spring 30, the stop lever 28 is always in contact with the side edge of the aluminum alloy. After the construction around the aluminum alloy window 2 is completed, the double-shaft motor 23 is started to rotate reversely, so that the movable conical plate 16 moves inwards to return to the original position, meanwhile, the stop lever 28 is driven to move inwards to return to the original position, and the double-shaft motor 23 is turned off. Therefore, sundries can be prevented from falling into the side edge of the aluminum alloy window 2.

When this device was placed on aluminum alloy window 2, can make second rubber slab 35 and wall body 1 contact, promoted push rod 6 inward movement again and driven first rubber slab 9 inward movement and wall body 1 contact, and then first rubber slab 9 and the cooperation of second rubber slab 35 fix this device on wall body 1, because of the effect of fifth spring 34, second rubber slab 35 contacts with wall body 1 always. Therefore, the device can be more stably fixed on the wall body 1.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a window platform dust cover for building, including diaphragm (3), first riser (4), push rod (6), u type frame (7), first spring (8) and first rubber slab (9), first riser (4) are installed on diaphragm (3) bottom right side, open first riser (4) lower part has first through-hole (5), be equipped with push rod (6) in first through-hole (5), the even spaced division in push rod (6) bottom has slot (10), u type frame (7) are installed to push rod (6) left end, be equipped with first rubber slab (9) in u type frame (7), be connected with a plurality of first springs (8) between the right flank in first rubber slab (9) right flank and u type frame (7), characterized by: the novel bearing is characterized by further comprising an inserting rod (12), a second spring (13), a second vertical plate (14), a fixed conical plate (15), a movable conical plate (16), a sliding block (18), a screw rod (19), a nut (20), an L-shaped rod (21), a connecting plate (22), a double-shaft motor (23) and a first bearing seat (24), wherein a second through hole (11) is formed in the middle of the bottom of the first vertical plate (4), the second through hole (11) is communicated with the first through hole (5), the inserting rod (12) is arranged in the second through hole (11), the second spring (13) is connected between the bottom of the inserting rod (12) and the bottom of the first vertical plate (4), the top end of the inserting rod (12) is located in the slot (10) and matched with the inserting rod, the second vertical plate (14) is installed on the left side of the bottom of the transverse plate (3), the fixed conical plate (15) is installed at the top of the transverse plate (3), the inner side surface of a movable conical plate (16) is contacted with the outer side surface of a fixed conical plate (15), horizontal sliding grooves (17) are symmetrically formed in the front side and the rear side of the middle of the top of a transverse plate (3), sliding blocks (18) are arranged in the horizontal sliding grooves (17), the sliding blocks (18) are in sliding fit with the horizontal sliding grooves (17), first bearing seats (24) are symmetrically formed in the front side and the rear side of the middle of the top of the transverse plate (3), screw rods (19) are connected in the first bearing seats (24), the threads of the screw rods (19) in the front side and the rear side are opposite, nuts (20) are arranged on the screw rods (19), the bottoms of the nuts (20) are connected with the tops of the sliding blocks (18), connecting plates (22) are arranged in the middle of the tops of the nuts (20) in the front side and the rear side, L-shaped rods (21) are, the top end of the rear L-shaped rod (21) is connected with the rear side of the inner side surface of the rear movable conical plate (16), a double-shaft motor (23) is installed in the middle of the top of the transverse plate (3), the double-shaft motor (23) is positioned between the screw rods (19) on the front side and the rear side, and the output shaft of the double-shaft motor (23) is connected with the inner ends of the screw rods (19) through a coupler; the multifunctional fixed cone plate tapping machine is characterized by further comprising a tapping device (25), wherein the tapping device (25) comprises a support plate (251), a second bearing seat (252), a cam shaft (253), a u-shaped plate (254), a first bevel gear (255), a driving motor (256), a second bevel gear (257), a contact plate (259), a third spring (2510), a rubber ball (2511) and a guide rod (2512), the support plate (251) is symmetrically installed in the front and back of the middle of the inner side surface of the fixed cone plate (15), the second bearing seat (252) is installed at the bottom of the support plate (251), the cam shaft (253) is connected between the front and back second bearing seats (252), the first bevel gear (255) is installed in the middle of the cam shaft (253), the u-shaped plate (254) is symmetrically installed in the front and back of the inner side surface of the fixed cone plate (15), the u-shaped plate (254) is located, be equipped with guide arm (2512) in guide hole (258), contact plate (259) are installed to guide arm (2512) bottom, contact plate (259) bottom and camshaft (253) contact, be connected with third spring (2510) between contact plate (259) top and the outer bottom of u template (254), third spring (2510) cover is on guide arm (2512), rubber ball (2511) is installed on guide arm (2512) top, vertical mounting has driving motor (256) in fixed conical plate (15) medial surface middle part, there is second bevel gear (257) the output shaft of driving motor (256) through the coupling joint, second bevel gear (257) are located first bevel gear (255) below and mesh with it.

2. A dust cover for construction window sill according to claim 1, characterized in that: still including baffle (26), framework (27), pin (28), contact wheel (29) and fourth spring (30), baffle (26) are all installed to front side movable conical plate (16) inboard surface front side and rear side movable conical plate (16) medial surface rear side, framework (27) are all installed to front and back both sides movable conical plate (16) lateral surface outside, framework (27) are the symmetry setting, pin (28) are all installed to the equal spaced rotary type of bottom rear side in front side framework (27) and the rear side framework (27), contact wheel (29) are installed to pin (28) tail end, be connected with fourth spring (30) between front side pin (28) bottom rear side and the bottom front side in front side framework (27), also be connected with fourth spring (30) between rear side pin (28) bottom front side and the bottom rear side in rear side framework (27).

3. A dust cover for construction window sill according to claim 2, characterized in that: still including sleeve (32), slide bar (33), fifth spring (34) and second rubber slab (35), open second riser (14) right flank lower part has vertical spout (31), sleeve (32) are installed to even spaced in vertical spout (31) left side, be equipped with slide bar (33) in sleeve (32), be connected with fifth spring (34) between the left surface in slide bar (33) left end and sleeve (32), install second rubber slab (35) between a plurality of slide bar (33) right-hand members.