CN214492365U

CN214492365U - Art sketch sponge wiper

Info

Publication number: CN214492365U
Application number: CN202120416281.4U
Authority: CN
Inventors: 马传强
Original assignee: Beijing Laomeiyuan Technology Co ltd
Current assignee: Beijing Laomeiyuan Technology Co ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2021-10-26
Anticipated expiration: 2031-02-25

Abstract

The utility model discloses an art sketch sponge wiper knife, which comprises a triangular knife and a hollow handle arranged on one side of the triangular knife, wherein the left side of the hollow handle is arranged to be an opening, the left side of the hollow handle is movably contacted with a rectangular box the top of which is arranged to be the opening, the left side of the rectangular box is fixedly connected with a connecting seat which is obliquely arranged, the left bottom of the connecting seat is fixedly connected with the right side of the triangular knife, and the rectangular box is provided with a sponge sleeve pressing and fixing mechanism matched with the triangular knife; the sponge sleeve pressing and fixing mechanism comprises a lifting rod which is slidably installed between the inner walls of the two sides of the rectangular box. The utility model relates to a rationally, easy and simple to handle is convenient for wipe the cover with the sponge and is pressed admittedly on the triangle-shaped sword, appears the sponge when effectively avoiding follow-up rubbing to wipe and wipes the risk that the cover drops, improves the stability in use, and the total length when being convenient for adjust the use according to actual need satisfies different personnel's user demand, is favorable to using.

Description

Art sketch sponge wiper

Technical Field

The utility model relates to a sponge wiping knife technical field especially relates to an art sketch sponge wiping knife.

Background

The fine arts sketch sponge wiping knife matches the sponge wiping sleeve for use, is a rubbing tool commonly used in fine arts sketch, and consists of a triangular knife head and a handle.

The existing art sketch sponge wiper has the defects that the sponge wiper sleeve is inconvenient to press and fix, and the length of a handle is inconvenient to adjust rapidly in most cases; the sponge wiping sleeve is easy to fall off during rubbing, the stability is low, different personnel have different requirements on the length of the handle during use, and the use requirements cannot be met.

SUMMERY OF THE UTILITY MODEL

Based on the technical problem that the background art exists, the utility model provides an art sketch sponge wiping knife.

The utility model provides a sword is wiped to fine arts sketch sponge, including triangle-shaped sword and the hollow handle of setting in triangle-shaped sword one side, the left side of hollow handle sets up to the opening, the left side movable contact of hollow handle has the top to be the rectangle box that the opening set up, and the connecting seat that the left side fixedly connected with slope of rectangle box set up, the left side bottom of connecting seat and the right side fixed connection of triangle-shaped sword, be provided with on the rectangle box and press solid mechanism with triangle-shaped sword matched with sponge cover.

Preferably, the sponge sleeve pressing and fixing mechanism comprises a lifting rod which is slidably mounted between the inner walls of two sides of the rectangular box, a screw rod is rotatably mounted on the inner wall of the bottom of the rectangular box, the lifting rod is sleeved on the screw rod in a threaded manner, a fixed plate is fixedly connected to the top of the rectangular box, a square groove is formed in the top end of the screw rod, a square rod is slidably sleeved in the square groove, the top end of the square rod extends to the upper side of the rectangular box and is fixedly connected with a knob, the fixed plate is sleeved on the square rod, a first fixed pulley is rotatably mounted on the inner wall of the left side of the rectangular box, a rectangular groove with an opening at the top is formed in the left side of the connecting seat, a fixed shaft is fixedly connected between the inner wall of the front side and the inner wall of the rear side of the rectangular groove, an L-shaped rod which is obliquely arranged is rotatably sleeved on the fixed shaft, the left end of the L-shaped rod extends out of the connecting seat and is fixedly connected with a rubber compression roller which is positioned above the triangular knife and is matched with the triangular knife, fixedly connected with is in tensile state's extension spring between the right side inner wall of L shape pole and the bottom inner wall of rectangular channel, has seted up the inclined hole on the right side inner wall of rectangular channel, rotates between the front side inner wall of inclined hole and the rear side inner wall and installs two second fixed pulleys, and the soft wire rope of right side bottom fixedly connected with of L shape pole, and soft wire rope's one end around the top of first fixed pulley and with the top fixed connection of lifter, soft wire rope is located between two second fixed pulleys, be provided with on the rectangle box with hollow handle matched with length adjustment mechanism.

Preferably, the length adjusting mechanism comprises an extension rod fixedly connected to the right side of the rectangular box, the hollow handle is slidably sleeved on the extension rod, a third fixed pulley is rotatably mounted on the inner wall of the right side of the rectangular box, a rectangular block positioned at the bottom of the third fixed pulley is slidably sleeved in the rectangular box, the rectangular block is rotatably sleeved on the square rod, a first spring is fixedly connected between the top of the rectangular block and the bottom of the fixed plate, a plurality of clamping grooves are formed in the inner wall of the bottom of the hollow handle, an outer tube with a plugging structure at the top end is fixedly connected to the right end of the extension rod, a clamping rod is slidably sleeved in the outer tube, the bottom end of the clamping rod extends into one of the clamping grooves and is nested with a ball, the clamping rod is clamped with one clamping groove, a second spring is fixedly connected between the top end of the clamping rod and the inner wall of the top of the outer tube, a fourth fixed pulley is rotatably mounted at the top end of the outer tube, and a pull rope is fixedly connected to the top end of the clamping rod, and one end of the pull rope sequentially rounds the top of the fourth fixed pulley and the top of the third fixed pulley and is fixedly connected with the top of the rectangular block, and the extension rod is sleeved on the pull rope.

Preferably, the top of the fixing plate is provided with a first round hole, and the square rod is located in the first round hole and is not in contact with the inner wall of the first round hole.

Preferably, equal fixedly connected with T shape slide rail on the both sides inner wall of rectangle box, the T shape spout that top and bottom set up for the opening is all seted up to the both sides of lifter, and T shape spout and the T shape slide rail sliding connection who corresponds, and the top of lifter is seted up threaded hole, and threaded hole and screw rod threaded connection.

Preferably, the inner wall of the bottom of the rectangular box is fixedly connected with a first bearing, and an inner ring of the first bearing is welded and sleeved with the outer side of the screw rod.

Preferably, a second round hole is formed in the top of the front side of the L-shaped rod, a second bearing is fixedly sleeved in the second round hole, and an inner ring of the second bearing is fixedly sleeved on the outer side of the fixed shaft.

Preferably, a third round hole is formed in the top of the rectangular block, a third bearing is fixedly sleeved in the third round hole, and an inner ring of the third bearing is welded and sleeved with the outer side of the square rod.

Preferably, a first through hole is formed in one end of the extension rod, a second through hole is formed in the inner wall of the right side of the rectangular box, a third through hole is formed in the inner wall of the top end of the outer tube, the pull rope is located in the first through hole, the second through hole and the third through hole, and the inner wall of the first through hole, the inner wall of the second through hole and the inner wall of the third through hole are all not in contact with the outer side of the pull rope.

Preferably, the bottom of extension rod has seted up the spacing groove, fixedly connected with stopper on the bottom inner wall of hollow handle, and stopper and spacing groove sliding connection.

Compared with the prior art, the beneficial effects of the utility model are that:

by matching the triangular knife, the rectangular box, the connecting seat, the fixed shaft, the L-shaped rod, the rubber compression roller, the tension spring, the lifting rod, the soft steel wire rope, the screw rod and the square rod with the knob, firstly, the knob is rotated reversely, the knob drives the screw rod to rotate through the square rod, the screw rod can drive the lifting rod to slide upwards on the two T-shaped slide rails, the lifting rod upwards loosens the tension on the soft steel wire rope, at the moment, the elasticity of the tension spring in a stretching state drives the L-shaped rod to rotate on the fixed shaft, the L-shaped rod drives the rubber compression roller to rotate upwards, at the moment, an external sponge wiping sleeve can be sleeved on the triangular knife rightwards, then, the knob is rotated forwards, at the moment, the lifting rod is changed into downward movement and pulls the soft steel wire rope, under the tension, the soft steel wire rope drives the L-shaped rod to rotate, the L-shaped rod drives the rubber compression roller to rotate downwards and to be tightly pressed on one side of the top of the sponge wiping sleeve, and the purpose of tightly pressing the sponge wiping sleeve on the triangular knife is achieved, the falling risk in use is reduced;

by matching the hollow handle, the rectangular box, the square rod, the knob, the rectangular block, the first spring, the extension rod, the outer pipe, the clamping rod, the clamping groove, the second spring and the pull rope with the square groove, the knob is pressed downwards to drive the square rod to slide downwards in the square groove, the square rod drives the rectangular block to slide downwards in the rectangular box and stretch the first spring, the rectangular block pulls the clamping rod upwards to separate from the clamping groove through the pull rope, the clamping rod compresses the second spring upwards, the rectangular box is moved leftwards at the moment, the rectangular box drives the extension rod to slide leftwards in the hollow handle, the extension rod drives the clamping rod to move leftwards through the outer pipe, the extension length of the extension rod changes at the moment, the total length changes, after the pressing force on the knob is adjusted properly, the first spring in the stretching state drives the rectangular block to move upwards to reset, the elastic force of the second spring in the compressing state drives the clamping rod to clamp downwards into the clamping groove which is aligned at the moment, the realization is to the fixed of extension rod, total length when can adjusting the use according to actual need.

The utility model relates to a rationally, easy and simple to handle is convenient for wipe the cover with the sponge and is pressed admittedly on the triangle-shaped sword, appears the sponge when effectively avoiding follow-up rubbing to wipe and wipes the risk that the cover drops, improves the stability in use, and the total length when being convenient for adjust the use according to actual need satisfies different personnel's user demand, is favorable to using.

Drawings

FIG. 1 is a perspective view of an art sketch sponge wiper blade provided by the present invention;

FIG. 2 is a schematic view of the art sketch sponge wiper of the present invention;

FIG. 3 is a schematic view of the partial cross-sectional structure of FIG. 2;

FIG. 4 is an enlarged view of part A of FIG. 3;

FIG. 5 is an enlarged view of the portion B of FIG. 3;

FIG. 6 is a schematic top view of the triangular knife of FIG. 1;

fig. 7 is a schematic view of the three-dimensional structure of the rectangular block of the art sketch sponge wiper blade provided by the utility model.

In the figure: 100 triangle-shaped sword, 101 hollow handle, 1 rectangular box, 2 fixed plates, 3 connecting seats, 4 rectangular channels, 5 fixed axles, 6L shape pole, 7 rubber compression roller, 8 extension springs, 9 second fixed pulleys, 10 inclined holes, 11 first fixed pulleys, 12 lifter, 13 soft wire rope, 14 screw rods, 15 square poles, 16 knobs, 17 rectangular blocks, 18 first spring, 19 third fixed pulleys, 20 extension rod, 21 outer tube, 22 kelly, 23 draw-in groove, 24 ball, 25 second spring, 26 fourth fixed pulleys, 27 stay cords, 28 square grooves.

Detailed Description

The present invention will be further explained with reference to the following embodiments.

Examples

Referring to fig. 1-7, this embodiment provides an art sketch sponge wiper, including a triangular knife 100 and a hollow handle 101 disposed on one side of the triangular knife 100, the left side of the hollow handle 101 is disposed as an opening, the left side of the hollow handle 101 is movably contacted with a rectangular box 1 with an opening disposed on the top, the left side of the rectangular box 1 is fixedly connected with a connecting seat 3 disposed obliquely, the left side bottom of the connecting seat 3 is fixedly connected with the right side of the triangular knife 100, the rectangular box 1 is provided with a sponge sleeve pressing mechanism matched with the triangular knife 100, the utility model has the advantages of reasonable design, simple operation, convenient pressing and fixing of the sponge wiper on the triangular knife 100, effective avoiding of the risk of falling off of the sponge wiper during the subsequent rubbing, improving the use stability, and the total length when being used can be adjusted conveniently according to actual needs, so that the use requirements of different personnel are met, and the use is facilitated.

In the embodiment, the sponge sleeve pressing and fixing mechanism comprises a lifting rod 12 which is slidably arranged between the inner walls of two sides of a rectangular box 1, a screw 14 is rotatably arranged on the inner wall of the bottom of the rectangular box 1, the lifting rod 12 is sleeved on the screw 14 in a threaded manner, a fixing plate 2 is fixedly connected to the top of the rectangular box 1, a square groove 28 is formed in the top end of the screw 14, a square rod 15 is slidably sleeved in the square groove 28, the top end of the square rod 15 extends to the upper side of the rectangular box 1 and is fixedly connected with a knob 16, the fixing plate 2 is sleeved on the square rod 15, a first fixing pulley 11 is rotatably arranged on the inner wall of the left side of the rectangular box 1, a rectangular groove 4 with an opening at the top is formed in the left side of a connecting seat 3, a fixing shaft 5 is fixedly connected between the inner wall of the front side and the inner wall of the rectangular groove 4, an L-shaped rod 6 which is obliquely arranged is rotatably sleeved on the fixing shaft 5, the left end of the L-shaped rod 6 extends to the outer side of the connecting seat 3 and is fixedly connected with a rubber compression roller 7, the rubber compression roller 7 is positioned above the triangular knife 100 and matched with the triangular knife 100, a tension spring 8 in a stretching state is fixedly connected between the right side inner wall of the L-shaped rod 6 and the bottom inner wall of the rectangular groove 4, an inclined hole 10 is formed on the right side inner wall of the rectangular groove 4, two second fixed pulleys 9 are rotatably arranged between the front side inner wall and the rear side inner wall of the inclined hole 10, a soft steel wire rope 13 is fixedly connected with the right side bottom of the L-shaped rod 6, one end of the soft steel wire rope 13 bypasses the top of the first fixed pulley 11 and is fixedly connected with the top of the lifting rod 12, the soft steel wire rope 13 is positioned between the two second fixed pulleys 9, a length adjusting mechanism matched with the hollow handle 101 is arranged on the rectangular box 1, the length adjusting mechanism comprises an extension rod 20 fixedly connected to the right side of the rectangular box 1, the hollow handle 101 is sleeved on the extension rod 20 in a sliding manner, a third fixed pulley 19 is rotatably arranged on the right side inner wall of the rectangular box 1, a rectangular block 17 positioned at the bottom of a third fixed pulley 19 is slidably sleeved in the rectangular box 1, the rectangular block 17 is rotatably sleeved on a square rod 15, a first spring 18 is fixedly connected between the top of the rectangular block 17 and the bottom of the fixed plate 2, a plurality of clamping grooves 23 are formed in the inner wall of the bottom of the hollow handle 101, an outer tube 21 with a top end of a plugging structure is fixedly connected to the right end of the extension rod 20, a clamping rod 22 is slidably sleeved in the outer tube 21, the bottom end of the clamping rod 22 extends into one of the clamping grooves 23 and is nested with a ball 24, the clamping rod 22 is clamped with one clamping groove 23, a second spring 25 is fixedly connected between the top end of the clamping rod 22 and the inner wall of the top of the outer tube 21, a fourth fixed pulley 26 is rotatably installed at the top end of the outer tube 21, a pull rope 27 is fixedly connected to the top end of the clamping rod 22, and one end of the pull rope 27 sequentially winds around the top of the fourth fixed pulley 26 and the top of the third fixed pulley 19 and is fixedly connected to the top of the rectangular block 17, the extension rod 20 is sleeved on the pull rope 27;

the top of the fixed plate 2 is provided with a first round hole, the square rod 15 is positioned in the first round hole and is not contacted with the inner wall of the first round hole, the inner walls of two sides of the rectangular box 1 are fixedly connected with T-shaped slide rails, two sides of the lifting rod 12 are provided with T-shaped slide grooves with top and bottom arranged as openings, the T-shaped slide grooves are in sliding connection with the corresponding T-shaped slide rails, the top end of the lifting rod 12 is provided with a threaded hole which is in threaded connection with the screw rod 14, the inner wall of the bottom of the rectangular box 1 is fixedly connected with a first bearing, the inner ring of the first bearing is welded and sleeved with the outer side of the screw rod 14, the top of the front side of the L-shaped rod 6 is provided with a second round hole, the inner ring of the second bearing is fixedly sleeved with the outer side of the fixed shaft 5, the top of the rectangular block 17 is provided with a third round hole, a third bearing is fixedly sleeved in the third round hole, the inner ring of the third bearing is welded and sleeved with the outer side of the square rod 15, first perforation has been seted up to extension rod 20's one end, the second perforation has been seted up on the right side inner wall of rectangle box 1, the third perforation has been seted up on the top inner wall of outer tube 21, stay cord 27 is located first perforation, in second perforation and the third perforation, first fenestrate inner wall, the fenestrate inner wall of second and the fenestrate inner wall of third all with stay cord 27's the outside contactless, the spacing groove has been seted up to extension rod 20's bottom, fixedly connected with stopper on hollow handle 101's the bottom inner wall, and stopper and spacing groove sliding connection, the utility model relates to a rationally, easy and simple to handle, be convenient for wipe the cover with the sponge and press admittedly on triangle-shaped sword 100, appear the risk that the cover drops when effectively avoiding follow-up rubbing, improve stability in use, and be convenient for adjust the total length when using according to actual need, satisfy different personnel's user demand, be favorable to the use.

In this embodiment, when the external sponge rubber sleeve is installed on the triangular knife 100, firstly, the knob 16 is rotated in the reverse direction, the knob 16 drives the square rod 15 to rotate, the square rod 15 drives the screw rod 14 to rotate through the square groove 28, under the action of the threaded hole formed on the lifting rod 12, the screw rod 14 rotates to drive the lifting rod 12 to slide upwards on the two T-shaped slide rails, the lifting rod 12 releases the pulling force on the soft steel wire rope 13 upwards, at this time, the elastic force of the tension spring 8 in the stretching state drives the L-shaped rod 6 to rotate on the fixed shaft 5, the L-shaped rod 6 drives the rubber compression roller 7 to rotate upwards, at this time, the external sponge rubber sleeve can be sleeved on the triangular knife 100 rightwards, then the knob 16 is rotated in the forward direction, which is the same as the movement direction of the reverse rotation knob 16, at this time, the lifting rod 12 is changed to move downwards and pulls the soft steel wire rope 13, and under the pulling force, the soft steel wire rope 13 slides on the top of the first fixed pulley 11, the soft steel wire rope 13 drives the L-shaped rod 6 to rotate, the L-shaped rod 6 drives the rubber compression roller 7 to rotate downwards, and the rubber compression roller 7 is pressed downwards to one side of the top of the sponge wiping sleeve to achieve the purpose of pressing and fixing the sponge wiping sleeve on the triangular knife 100, so that the sponge wiping sleeve is conveniently pressed and fixed on the triangular knife 100, and the risk that the sponge wiping sleeve falls off during subsequent rubbing is effectively avoided;

when the total length needs to be adjusted according to actual needs, firstly, the knob 16 is pressed downwards, the knob 16 drives the square rod 15 to slide downwards in the square groove 28, the square rod 15 drives the rectangular block 17 to slide downwards in the rectangular box 1 through the third bearing, the rectangular block 17 stretches the first spring 18 downwards, meanwhile, the rectangular block 17 drives the pull rope 27 to slide on the tops of the third fixed pulley 19 and the fourth fixed pulley 26, the pull rope 27 drives the clamping rod 22 to move upwards and separate from the clamping groove 23 clamped with the clamping rod, the clamping rod 22 compresses the second spring 25 upwards, at this time, the rectangular box 1 is moved leftwards, the rectangular box 1 drives the extension rod 20 to slide leftwards in the hollow handle 101, the extension rod 20 drives the clamping rod 22 to move leftwards through the outer tube 21, at this time, the extension length of the extension rod 20 changes, the total length changes under the matching of the extension rod 20 and the hollow handle 101, and after the knob is adjusted properly, the pressing force on the square rod 15 is released, the first spring 18 in the stretching state drives the rectangular block 17 to move back and forth to reset, the elastic force of the second spring 25 in the compressing state drives the clamping rod 22 to be clamped into the clamping groove 23 aligned at the moment, the clamping groove 23 limits the outer tube 21 through the clamping rod 22 at the moment, and the extension rod 20 is fixed, so that the total length in use can be adjusted conveniently according to actual needs, and the use requirements of different personnel are met;

after the length is adjusted, when the clamping rod 22 is not aligned with one clamping groove 23 of the plurality of clamping grooves 23, the elastic force of the second spring 25 in the compression state drives the ball 24 to abut against the inner wall of the bottom of the hollow handle 101 downwards through the clamping rod 22, the extension rod only needs to move left and right slightly at the moment, the clamping rod 22 moves slightly along with the clamping rod 22, and when the clamping rod 22 moves left and right to align with the nearest clamping groove 23 at the moment, the elastic force of the second spring 25 in the compression state can automatically drive the clamping rod 22 to be clamped into the clamping groove 23 aligned at the moment downwards.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. Art sketch sponge wiping knife, including triangle-shaped sword (100) and hollow handle (101) of setting in triangle-shaped sword (100) one side, the left side of hollow handle (101) sets up to the opening, its characterized in that, the left side movable contact of hollow handle (101) has rectangle box (1) that the top set up for the opening, connecting seat (3) that the left side fixedly connected with slope of rectangle box (1) set up, the left side bottom of connecting seat (3) and the right side fixed connection of triangle-shaped sword (100), be provided with on rectangle box (1) and press solid mechanism with triangle-shaped sword (100) matched with sponge cover.

2. The art sketch sponge wiping knife according to claim 1, wherein the sponge sleeve pressing and fixing mechanism comprises a lifting rod (12) which is slidably installed between the inner walls of the two sides of a rectangular box (1), a screw rod (14) is rotatably installed on the inner wall of the bottom of the rectangular box (1), the lifting rod (12) is sleeved on the screw rod (14) in a threaded manner, a fixed plate (2) is fixedly connected to the top of the rectangular box (1), a square groove (28) is formed in the top end of the screw rod (14), a square rod (15) is slidably sleeved in the square groove (28), the top end of the square rod (15) extends to the upper side of the rectangular box (1) and is fixedly connected with a knob (16), the fixed plate (2) is sleeved on the square rod (15), a first fixed pulley (11) is rotatably installed on the inner wall of the left side of the rectangular box (1), a rectangular groove (4) with an opening at the top is formed in the left side of a connecting seat (3), a fixed shaft (5) is fixedly connected between the front side inner wall and the rear side inner wall of the rectangular groove (4), an L-shaped rod (6) which is obliquely arranged is rotatably sleeved on the fixed shaft (5), the left end of the L-shaped rod (6) extends out of the connecting seat (3) and is fixedly connected with a rubber compression roller (7), the rubber compression roller (7) is positioned above the triangular knife (100) and is matched with the triangular knife (100), a tension spring (8) which is in a stretching state is fixedly connected between the right side inner wall of the L-shaped rod (6) and the bottom inner wall of the rectangular groove (4), an inclined hole (10) is formed in the right side inner wall of the rectangular groove (4), two second fixed pulleys (9) are rotatably installed between the front side inner wall and the rear side inner wall of the inclined hole (10), a soft steel wire rope (13) is fixedly connected to the right side bottom of the L-shaped rod (6), and one end of the soft steel wire rope (13) winds around the top of the first fixed pulley (11) and is fixedly connected with the top of the lifting rod (12), the flexible steel wire rope (13) is positioned between the two second fixed pulleys (9), and the rectangular box (1) is provided with a length adjusting mechanism matched with the hollow handle (101).

3. The art sketch sponge wiping knife as claimed in claim 2, wherein the length adjusting mechanism comprises an extension rod (20) fixedly connected to the right side of the rectangular box (1), the hollow handle (101) is slidably sleeved on the extension rod (20), a third fixed pulley (19) is rotatably mounted on the inner wall of the right side of the rectangular box (1), a rectangular block (17) positioned at the bottom of the third fixed pulley (19) is slidably sleeved in the rectangular box (1), the rectangular block (17) is rotatably sleeved on the square rod (15), a first spring (18) is fixedly connected between the top of the rectangular block (17) and the bottom of the fixed plate (2), a plurality of clamping grooves (23) are formed in the inner wall of the bottom of the hollow handle (101), an outer tube (21) with a plugging structure at the top end is fixedly connected to the right end of the extension rod (20), a clamping rod (22) is slidably sleeved in the outer tube (21), the bottom of kelly (22) extends to in draw-in groove (23) in a plurality of draw-in grooves (23) and the nested ball (24) that has, kelly (22) clamps with draw-in groove (23) mutually, fixedly connected with second spring (25) between the top of kelly (22) and the top inner wall of outer tube (21), the top of outer tube (21) is rotated and is installed fourth fixed pulley (26), the top fixedly connected with stay cord (27) of kelly (22), and the top of stay cord (27) in proper order around fourth fixed pulley (26) and third fixed pulley (19) and with the top fixed connection of rectangular block (17), extension rod (20) cover is established on stay cord (27).

4. The art sketch sponge wiping knife as claimed in claim 2, wherein a first round hole is formed at the top of the fixing plate (2), and the square rod (15) is positioned in the first round hole and is not in contact with the inner wall of the first round hole.

5. The art sketch sponge wiping knife as claimed in claim 2, wherein the inner walls of two sides of the rectangular box (1) are fixedly connected with T-shaped sliding rails, two sides of the lifting rod (12) are respectively provided with a T-shaped sliding groove with the top and the bottom being provided with openings, the T-shaped sliding grooves are slidably connected with the corresponding T-shaped sliding rails, the top end of the lifting rod (12) is provided with a threaded hole, and the threaded hole is in threaded connection with the screw rod (14).

6. The art sketch sponge wiping knife as claimed in claim 2, wherein a first bearing is fixedly connected to the inner wall of the bottom of the rectangular box (1), and an inner ring of the first bearing is welded and sleeved with the outer side of the screw rod (14).

7. The art sketch sponge wiping knife as claimed in claim 2, wherein a second round hole is formed in the top of the front side of the L-shaped rod (6), a second bearing is fixedly sleeved in the second round hole, and an inner ring of the second bearing is fixedly sleeved with the outer side of the fixed shaft (5).

8. The art sketch sponge wiping knife as claimed in claim 3, wherein a third circular hole is formed in the top of the rectangular block (17), a third bearing is fixedly sleeved in the third circular hole, and an inner ring of the third bearing is welded and sleeved with the outer side of the square rod (15).

9. The art sketch sponge wiping knife as claimed in claim 3, wherein one end of the extension rod (20) is provided with a first through hole, the right inner wall of the rectangular box (1) is provided with a second through hole, the top inner wall of the outer tube (21) is provided with a third through hole, the pull rope (27) is positioned in the first through hole, the second through hole and the third through hole, and the inner walls of the first through hole, the second through hole and the third through hole are all not in contact with the outer side of the pull rope (27).

10. The art sketch sponge wiping knife as claimed in claim 3, wherein the bottom of the extension rod (20) is provided with a limiting groove, the inner wall of the bottom of the hollow handle (101) is fixedly connected with a limiting block, and the limiting block is connected with the limiting groove in a sliding manner.