CN211038481U

CN211038481U - Ladder for decoration

Info

Publication number: CN211038481U
Application number: CN201921819623.6U
Authority: CN
Inventors: 李志钢; 王�锋; 李伟; 潘建旭; 骆宁; 李小霞; 窦海龙
Original assignee: Beijing Urban Construction First Construction Development Co ltd
Current assignee: Beijing Urban Construction First Construction Development Co ltd
Priority date: 2019-10-26
Filing date: 2019-10-26
Publication date: 2020-07-17
Anticipated expiration: 2029-10-26

Abstract

The utility model relates to a ladder for decoration, which comprises an adjusting frame and a supporting frame, wherein the adjusting frame is inserted in the supporting frame and is connected with the supporting frame in a sliding way, the adjusting frame comprises two adjusting frames which are arranged oppositely, the distance between the two adjusting frames is gradually increased along the direction from the top end of the adjusting frame to the bottom end of the adjusting frame, the top ends of the two adjusting frames are hinged and fixed, the supporting frame comprises two supporting frames which are arranged oppositely, the inclination angles of the two adjusting frames are the same as the inclination angles of the two supporting frames, and the two adjusting frames and the two supporting frames are arranged oppositely up and down, a telescopic rod and a guide rod are arranged between the two oppositely arranged support frames, the oppositely arranged support frames are connected through the telescopic rod and the guide rod, the fixing component is hinged and fixed on the supporting frame, the position on the adjusting frame, which is opposite to the fixing component, is in a sawtooth shape, and a V-shaped stop groove which is convenient for clamping and fixing the fixing component is formed between the adjacent teeth of the sawtooth-shaped part of the adjusting frame. The utility model discloses have the effect of nimble regulation ladder height.

Description

Ladder for decoration

Technical Field

The utility model belongs to the technical field of the technique of fitment and specifically relates to a ladder is used to fitment.

Background

The ladder is a tool frequently used in decoration, and the ladder is required in the procedures of wall painting, electric wire installation, suspended ceiling and the like in indoor decoration. Because the floor heights of indoor decoration are different, and the floor heights are two or three meters, the common ladder can not be contracted, so that the ladder can not adapt to indoor operation with different floor heights.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a ladder is used to fitment, it has the effect of nimble regulation ladder height.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a ladder for decoration comprises an adjusting frame and a supporting frame, wherein the adjusting frame is inserted in the supporting frame and is in sliding connection with the supporting frame, the adjusting frame comprises two adjusting frames which are oppositely arranged, the distance between the two adjusting frames gradually increases along the direction from the top end of the adjusting frame to the bottom end of the adjusting frame, the top ends of the two adjusting frames are hinged and fixed, the supporting frame comprises two supporting frames which are oppositely arranged, the inclination angles of the two adjusting frames are the same as those of the two supporting frames, and the two adjusting frames and the two supporting frames are oppositely arranged up and down, a telescopic rod and a guide rod are arranged between the two oppositely arranged support frames, the oppositely arranged support frames are connected through the telescopic rod and the guide rod, the fixing component is hinged and fixed on the supporting frame, the position on the adjusting frame, which is opposite to the fixing component, is in a sawtooth shape, and a V-shaped stop groove which is convenient for clamping and fixing the fixing component is formed between the adjacent teeth of the sawtooth-shaped part of the adjusting frame.

Through adopting above-mentioned technical scheme, insert through the alignment jig and establish in the support frame and fixed through fixed subassembly to can adjust the position that the alignment jig is located the support frame as required, thereby realize adjusting the height of ladder for fitment as required.

The utility model discloses further set up to: the adjusting frame comprises two adjusting rods which are oppositely arranged, a second cross rod is fixed between the oppositely arranged adjusting rods and equidistantly arranged along the length direction of the adjusting rods, the supporting frame comprises two supporting rods which are oppositely arranged, a first cross bar is fixed between the oppositely arranged support bars, the first cross bar is horizontally arranged, two ends of the first cross bar in the length direction are respectively and fixedly connected with the support bars, the first cross bar is equidistantly arranged along the length direction of the support bars, a second cross bar of the adjusting frame is parallel to the first cross bar, the support bars are hollow tubes, the top ends of the support bars are provided with openings and are communicated with the inside, the cross section area of the adjusting bars is matched with the cross section area of the inner cavity of the support bars, adjusting rods are inserted into the corresponding supporting rods, and the adjusting rods inserted into the supporting rods are connected with the supporting rods in a sliding mode.

By adopting the technical scheme, the adjusting rod of the adjusting frame is inserted into the supporting rod of the supporting frame through the up-and-down sliding connection of the adjusting frame and the supporting frame, so that the height of the decoration ladder can be adjusted as required.

The utility model discloses further set up to: fixed subassembly includes the pawl, the pawl is located the bracing piece top and rotates with the bracing piece to be connected, the vertical setting of pawl, the width of pawl diminishes along the length direction of pawl gradually, the one end that the pawl width is minimum is sharp, the one end that the pawl is sharp is the joint end, the other end of pawl is the stiff end, the joint end of pawl surpasss the top of bracing piece and inserts the relative setting of regulation pole lateral wall of establishing in the bracing piece, the stiff end that runs through the pawl is provided with the pivot, cassette and bracing piece fixed connection are passed through in the pivot, cassette and bracing piece fixed connection are run through in the pivot, the pivot is run through the cassette and is rotated with the cassette and be connected, the position cover relative with the pawl stiff end in the pivot is equipped with the torsional spring.

Through adopting above-mentioned technical scheme, can drive the pawl through the torsional spring in a flexible way and move towards the direction that is close to the sawtooth to the joint end joint that makes the pawl ends in the V-arrangement ends the position groove, thereby fixes alignment jig and support frame fast.

The utility model discloses further set up to: the V-shaped stop groove slants downwards along the height direction of the supporting rod.

Through adopting above-mentioned technical scheme, through ending the position groove with the V-arrangement and setting up along bracing piece direction of height slant decline, realize that better joint end joint with the pawl is fixed, can directly upwards stimulate the alignment jig simultaneously, increase the height of ladder for the fitment, when the height that needs reduced the ladder, be convenient for end the joint of pawl and dial out from the V-arrangement in ending the position groove.

The utility model discloses further set up to: and a control piece capable of quickly separating the pawl from the V-shaped stop groove is arranged on the side wall of the pawl departing from the adjusting rod.

Through adopting above-mentioned technical scheme, through the setting of control piece, can dial out a plurality of pawls from V-arrangement stop groove fast.

The utility model discloses further set up to: the control piece comprises a fixing ring, pull ropes and a steering ring, the fixing ring is fixed on the side wall of each pawl, which deviates from the adjusting rod, the pull ropes penetrate through the fixing ring, one end of each pull rope is fixedly connected with the fixing ring, the free ends of the pull ropes are converged into one rope, and the converged rope penetrates through the steering ring fixed on the side wall of the fixing seat to vertically extend downwards.

Through adopting above-mentioned technical scheme, through passing solid fixed ring with the stay cord, stay cord wherein one end and fixed ring fixed connection, the stay cord that the stay cord other end assembles into a rope passes the steering ring of fixing on the fixing base, assembles into the stay cord of a rope through the pulling and can pull out the pawl of joint in ending the position groove to make the alignment jig slide down along the support frame, and then the height of adjustable whole ladder.

The utility model discloses further set up to: the telescopic link includes first horizon bar and second horizon bar, reverse external screw thread section has been seted up to the one end relative with the second horizon bar at first horizon bar, it is provided with the thread bush with the external screw thread section of first horizon bar and second horizon bar is identical, the guide bar includes first slide bar and second slide bar, and first slide bar and second slide bar sliding connection, the one end that first horizon bar and second horizon bar deviate from mutually stretches to the lateral wall that the carriage is relative respectively, the one end that first slide bar and second slide bar deviate from mutually stretches to the lateral wall that the carriage is relative respectively, and the spout has been seted up on the lateral wall that the carriage is relative, telescopic link and guide bar both ends insert respectively in the spout and can follow the length direction of spout and slide from top to bottom, the telescopic link is provided with the mounting that can fix telescopic link and carriage with the guide bar with the one end that stretches into the spout.

Through adopting above-mentioned technical scheme, through the setting of telescopic link, can adjust the length of telescopic link in a flexible way through twisting the thread bush, drive the guide bar simultaneously and slide to adjust the distance between the relative support frame that sets up, and then realize the further regulation to the ladder height.

The utility model discloses further set up to: the mounting includes the fixture block, fixture block and telescopic link mutually perpendicular and fixture block level set up, the growth of fixture block is greater than the width of spout, fixture block one end is located the spout, the other end of fixture block runs through the carriage lateral wall and stretches out, be provided with logical groove on the lateral wall that stretches out the carriage at the fixture block, the length direction who leads to the groove is unanimous with the length direction of spout, move at telescopic link along spout length direction, the fixture block moves along the length direction who leads to the groove, the external screw thread has been seted up to the part that stretches out logical groove at the fixture block, be provided with the bolt with the external screw thread assorted.

Through adopting above-mentioned technical scheme, setting through the mounting, set up through fixture block and telescopic link mutually perpendicular and fixture block level, the big length of fixture block is greater than the width of spout, thereby prevent that the telescopic link from deviating from the spout, stretch out the logical groove that sets up on the lateral wall of carriage through the fixture block, at the telescopic link along spout length direction motion, the fixture block is along the length direction motion that leads to the groove, stretch out the part that leads to the groove at the fixture block and seted up the external screw thread, be provided with the bolt with external screw thread assorted, the maximum width of bolt is greater than the width that leads to the groove, through the setting of the external screw thread on bolt and the fixture.

To sum up, the utility model discloses a beneficial technological effect does:

1. through the arrangement of the fixing assembly and the matching arrangement of the pawl and the V-shaped stop groove, the adjusting frame can be quickly pulled upwards, so that the height of the decorative ladder can be quickly adjusted;

2. through the arrangement of the control piece, the stay rope penetrates through the fixing ring, one end of the stay rope is fixedly connected with the fixing ring, the stay rope with the other end converged into a rope penetrates through the steering ring fixed on the fixing seat, and the pawl clamped in the stop groove can be pulled out by pulling the stay rope converged into a rope, so that the adjusting frame slides downwards along the supporting frame, and the height of the whole ladder can be adjusted;

3. through the cooperation setting of telescopic link and guide bar, can adjust the length of telescopic link in a flexible way through twisting the thread bush, drive the guide bar simultaneously and slide to adjust the distance between the relative support frame that sets up, and then realize the further regulation to the ladder height.

Drawings

FIG. 1 is a schematic view of a finishing ladder;

FIG. 2 is a schematic view of the structure of the telescoping rod and the guide rod;

FIG. 3 is a schematic structural view of the securing assembly;

fig. 4 is a schematic view of the structure of the fixing member.

In the figure, 1, an adjusting bracket; 11. an adjusting frame; 111. adjusting a rod; 1111. a V-shaped stop slot; 1112. a spring; 112. a second cross bar; 12. a fixed seat; 2. a support frame; 21. a support frame; 211. a support bar; 2111. a chute; 2112. a through groove; 212. a first cross bar; 22. a telescopic rod; 221. a first horizontal bar; 222. a second horizontal bar; 223. a threaded sleeve; 23. a guide bar; 231. a first slide bar; 232. a second slide bar; 24. a fixing member; 241. a clamping block; 242. a bolt; 3. a fixing assembly; 31. a pawl; 311. a clamping end; 312. a fixed end; 32. a rotating shaft; 33. a card holder; 34. a torsion spring; 4. a control member; 41. a fixing ring; 42. pulling a rope; 43. and a steering ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a ladder is used to fitment, including alignment jig 1 and support frame 2, alignment jig 1 inserts and establishes in support frame 2 with 2 sliding connection of support frame, and the articulated fixed subassembly 3 that is fixed with on support frame 2, is rack form with the relative position of fixed subassembly 3 on alignment jig 1, thereby is nimble fixed with alignment jig 1 and support frame 2 through the cooperation that fixed subassembly 3 is rack form's position with alignment jig 1.

The adjusting frame 1 comprises two adjusting frames 11 which are oppositely arranged, and the distance between the two adjusting frames 11 is gradually increased along the direction from the top end of the adjusting frame 11 to the bottom end of the adjusting frame 11. The top ends of the two adjusting frames 11 are hinged and fixed. Be fixed with fixing base 12 on two sets of adjusting frame 11's top, fixing base 12 level sets up, and fixing base 12 is located adjusting frame 11's top and links to each other with adjusting frame 11 to be convenient for make the workman climb the top of ladder. Each adjusting frame 11 includes two adjusting rods 111, the two adjusting rods 111 are disposed opposite to each other, a second cross bar 112 is fixed between the two adjusting rods 111, and the second cross bars 112 are disposed at equal intervals along the length direction of the adjusting rods 111.

Referring to fig. 1 and 2, the support frame 2 includes two oppositely disposed support frames 21, the two adjusting frames 11 have the same inclination angle with the two support frames 21, the two adjusting frames 11 and the two support frames 21 are disposed oppositely, an expansion link 22 and a guide rod 23 are disposed between the two oppositely disposed support frames 21, and the oppositely disposed support frames 21 are connected through the expansion link 22 and the guide rod 23.

Each supporting frame 21 comprises two supporting rods 211, the two supporting rods 211 are arranged oppositely, a first cross rod 212 is fixed between the oppositely arranged supporting rods 211, the first cross rod 212 is horizontally arranged, two ends of the first cross rod 212 in the length direction are respectively fixedly connected with the supporting rods 211, the first cross rod 212 is arranged at equal intervals in the length direction of the supporting rods 211, and the second cross rod 112 of the adjusting frame 11 is parallel to the first cross rod 212. The support bars 211 are hollow tubes, the top ends of the support bars 211 are open and communicated with the inside, the cross-sectional areas of the adjusting rods 111 are matched with the cross-sectional areas of the cavities inside the support bars 211, the adjusting rods 111 are inserted into the corresponding support bars 211, and the adjusting rods 111 inserted into the support bars 211 are connected with the support bars 211 in a sliding mode. The bottom end of the adjusting rod 111 is fixed with a spring, when the adjusting frame 1 falls down along the supporting frame 2, the spring enables the adjusting frame 1 to fall at the bottom end of the supporting frame 2, and the spring is used for realizing buffering to prevent the adjusting frame 1 from being damaged.

Referring to fig. 2, the telescopic rod 22 includes a first horizontal rod 221 and a second horizontal rod 222, wherein an end of the first horizontal rod 221 opposite to the end of the second horizontal rod 222 is provided with an external thread, the thread sections of the first horizontal rod 221 and the second horizontal rod 222 are arranged in opposite directions, and a thread sleeve 223 is arranged to match the external thread of the first horizontal rod 221 and the second horizontal rod 222. The guide lever includes a first slide lever 231 and a second slide lever 232, and the first slide lever 231 is slidably connected to the second slide lever 232. The length of the telescopic rod 22 can be flexibly adjusted by screwing the threaded sleeve 223, and meanwhile, the guide rod 23 is driven to slide, so that the distance between the oppositely arranged support frames 2 is adjusted, and further adjustment of the height of the ladder is realized. The ends of the first horizontal bar 221 and the second horizontal bar 222 departing from each other extend to the opposite side walls of the supporting frame 21, the ends of the first sliding bar 231 and the second sliding bar 232 departing from each other extend to the opposite side walls of the supporting frame 21, the opposite side walls of the supporting frame 21 are provided with sliding grooves 2111, and the two ends of the telescopic rod 22 and the two ends of the guide bar 23 are equally inserted into the sliding grooves 2111 respectively and can slide up and down along the length direction of the sliding grooves 2111. The fixing member 24 is fixedly connected to one end of the telescopic rod 22 and one end of the guide rod 23 extending into the sliding groove 2111, and the telescopic rod 22 and the guide rod 23 can be flexibly and respectively and fixedly connected with the support frames 21 which are arranged oppositely through the fixing member 24.

The fixing member 24 includes a latch 241, the latch 241 is perpendicular to the telescopic rod 22, the latch 241 is horizontally disposed, and the length of the latch 241 is greater than the width of the sliding slot 2111, so as to prevent the telescopic rod 22 from being released from the sliding slot 2111. One end of the latch 241 is located in the sliding slot 2111, and the other end of the latch 241 extends through the side wall of the supporting frame 21. A through groove 2112 is formed in the side wall of the fixture block 241 extending out of the support frame 21, the length direction of the through groove 2112 is consistent with the length direction of the sliding groove 2111, the telescopic rod 22 moves along the length direction of the sliding groove 2111, the fixture block 241 moves along the length direction of the through groove 2112, an external thread is formed in the part of the fixture block 241 extending out of the through groove 2112, a bolt 242 is arranged to be matched with the external thread, the maximum width of the bolt 242 is larger than the width of the through groove 2112, and the telescopic rod 22 and the support frame 21 can be flexibly fixed through the arrangement of the bolt 242 and the external thread.

Referring to fig. 3, the fixing assembly 3 includes a pawl 31, the pawl 31 is located at the top end of the supporting rod 211 and is rotatably connected with the supporting rod 211, the pawl 31 is vertically arranged, the width of the pawl 31 gradually decreases along the length direction of the pawl 31, the end with the minimum width of the pawl 31 is in a pointed shape, the end with the pointed shape of the pawl 31 is a clamping end 311, and the other end of the pawl 31 is a fixed end 312. The clamping end 311 of the pawl 31 is arranged opposite to the side wall of the adjusting rod 111 inserted in the supporting rod 211 beyond the top end of the supporting rod 211. A rotating shaft 32 is arranged through the fixed end 312 of the pawl 31, the rotating shaft 32 is fixedly connected with the support rod 211 through a clamping seat 33, the clamping seat 33 is fixedly connected with the support rod 211, and the rotating shaft 32 penetrates through the clamping seat 33 and is rotatably connected with the clamping seat 33. The torsion spring 34 is sleeved on the rotating shaft 32 at a position opposite to the fixed end 312 of the pawl 31, the torsion spring 34 is fixedly connected with the rotating shaft 32, and the fixed end 312 of the torsion spring 34 is fixedly connected with the clamping end 311 of the pawl 31. The position of the adjustment lever 111 opposite to the catching end 311 of the pawl 31 is serrated. A V-shaped stop slot 1111 is formed between adjacent teeth of the saw teeth, and the V-shaped stop slot 1111 slants downwards along the height direction of the support bar 211. The torsion spring 34 can flexibly drive the pawl 31 to move towards the direction close to the saw teeth, so that the clamping end 311 of the pawl 31 is clamped in the V-shaped stop groove 1111.

Referring to fig. 4, a control member 4 is disposed on a side wall of the pawl 31 facing away from the adjustment lever 111, and the pawl 31 engaging with the adjustment lever 111 can be directly controlled by the control member 4 to disengage from the V-shaped stop slot 1111, so that the adjustment frame 1 can slide downward.

The control member 4 comprises a fixing ring 41, a pull rope 42 and a steering ring 43, the fixing ring 41 is fixed on the side wall of each pawl 31 facing away from the adjusting rod 111, the pull rope 42 passes through the fixing ring 41, and one end of the pull rope 42 is fixedly connected with the fixing ring 41. The free ends of the pull ropes 42 are converged into one rope, and the converged rope penetrates through the steering ring 43 fixed on the side wall of the fixing seat 12 to vertically extend downwards, and a worker only needs to pull the pull rope 42 converged into one rope to pull out the pawl 31 clamped in the stopping groove, so that the adjusting frame 1 slides downwards along the support frame 2, and then the height of the whole ladder can be adjusted.

Adjusting bracket 1 inserts and establishes in support frame 2, according to the difference of indoor floor height, can directly upwards stimulate adjusting bracket 1, increase the height of ladder for the fitment, when the height that needs reduced the ladder, dial out the joint end 311 of pawl 31 from V-arrangement end position groove 1111, reduce the height that adjusting bracket 1 is located support frame 2, when adjusting bracket 1 to suitable position, with pawl 31 joint to adjusting bracket 1 on with the V-arrangement end position groove 1111 relative of pawl 31, thereby in the flexibility with adjusting bracket 1 fixed. After the subsequent operation is finished, the pull rope 42 is pulled to rapidly pull the pawl 31 out of the V-shaped stop slot 1111, so that the adjusting frame 1 falls down along the supporting frame 2, and the spring arranged at the bottom end of the adjusting rod 111 of the adjusting frame 1 can prevent the falling adjusting frame 1 from being damaged in time.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a ladder is used to fitment, includes alignment jig (1) and support frame (2), its characterized in that: the adjusting frame (1) is inserted in the supporting frame (2) and is in sliding connection with the supporting frame (2), the adjusting frame (1) comprises two adjusting frames (11) which are oppositely arranged, the distance between the two adjusting frames (11) gradually increases along the direction from the top end of the adjusting frame (11) to the bottom end of the adjusting frame (11), the top ends of the two adjusting frames (11) are hinged and fixed, the supporting frame (2) comprises two supporting frames (21) which are oppositely arranged, the two adjusting frames (11) have the same inclination angle with the two supporting frames (21), the two adjusting frames (11) and the two supporting frames (21) are oppositely arranged up and down, an expansion link (22) and a guide rod (23) are arranged between the two oppositely arranged supporting frames (21), the oppositely arranged supporting frames (21) are connected through the expansion link (22) and the guide rod (23), and a fixing component (3) is hinged and fixed on the supporting frame (2), the adjusting frame (1) is in a sawtooth shape relative to the fixing component (3), and a V-shaped stopping groove (1111) which is convenient for clamping and fixing the fixing component (3) is formed between adjacent teeth of the sawtooth-shaped part of the adjusting frame (1).

2. A finishing ladder as defined in claim 1, wherein: the adjusting frame (11) comprises two adjusting rods (111), the two adjusting rods (111) are arranged oppositely, a second cross rod (112) is fixed between the oppositely arranged adjusting rods (111), the second cross rod (112) is arranged along the length direction of the adjusting rods (111) at equal intervals, the supporting frame (21) comprises two supporting rods (211), the two supporting rods (211) are arranged oppositely, a first cross rod (212) is fixed between the oppositely arranged supporting rods (211), the first cross rod (212) is horizontally arranged, two ends of the length direction of the first cross rod (212) are respectively fixedly connected with the supporting rods (211), the first cross rod (212) is arranged along the length direction of the supporting rods (211) at equal intervals, the second cross rod (112) of the adjusting frame (11) is parallel to the first cross rod (212), the supporting rods (211) are hollow tubes inside, the top ends of the supporting rods (211) are open and communicated with the inside, the cross section area of the adjusting rod (111) is matched with the cross section area of the cavity in the supporting rod (211), the adjusting rod (111) is inserted in each supporting rod (211), and the adjusting rod (111) inserted in the supporting rod (211) is connected with the supporting rod (211) in a sliding mode.

3. A finishing ladder as defined in claim 1, wherein: the fixing component (3) comprises a pawl (31), the pawl (31) is positioned at the top end of the supporting rod (211) and is rotatably connected with the supporting rod (211), the pawl (31) is vertically arranged, the width of the pawl (31) gradually decreases along the length direction of the pawl (31), one end with the minimum width of the pawl (31) is in a pointed shape, one end with the pointed shape of the pawl (31) is a clamping end (311), the other end of the pawl (31) is a fixed end (312), the clamping end (311) of the pawl (31) exceeds the top end of the supporting rod (211) and is oppositely arranged with the side wall of the adjusting rod (111) inserted in the supporting rod (211), a rotating shaft (32) is arranged at the fixed end (312) penetrating through the pawl (31), the rotating shaft (32) is fixedly connected with the supporting rod (211) through a clamping seat (33), the clamping seat (33) is fixedly connected with the supporting rod (211), and the rotating shaft (32) penetrates, the position, opposite to the fixed end (312) of the pawl (31), of the rotating shaft (32) is sleeved with a torsion spring (34), the torsion spring (34) is fixedly connected with the rotating shaft (32), and the fixed end (312) of the torsion spring (34) is fixedly connected with a clamping end (311) of the pawl (31).

4. A finishing ladder as defined in claim 1, wherein: the V-shaped stop groove (1111) slants downwards along the height direction of the support rod (211).

5. A finishing ladder as set forth in claim 3 wherein: and a control piece (4) capable of quickly disengaging the pawl (31) from the V-shaped stop groove (1111) is arranged on the side wall of the pawl (31) departing from the adjusting rod (111).

6. A finishing ladder as set forth in claim 5, wherein: the control piece (4) comprises a fixing ring (41), pull ropes (42) and a steering ring (43), the fixing ring (41) is fixed on the side wall of each pawl (31) departing from the adjusting rod (111), the pull ropes (42) penetrate through the fixing ring (41) and one ends of the pull ropes (42) are fixedly connected with the fixing ring (41), the free ends of the pull ropes (42) are converged into a rope, and the converged rope penetrates through the steering ring (43) fixed on the side wall of the fixing seat (12) to vertically extend downwards.

7. A finishing ladder as defined in claim 1, wherein: the telescopic rod (22) comprises a first horizontal rod (221) and a second horizontal rod (222), one end of the first horizontal rod (221) opposite to one end of the second horizontal rod (222) is provided with an opposite external thread section, a thread sleeve (223) is arranged to be matched with the external thread sections of the first horizontal rod (221) and the second horizontal rod (222), the guide rod (23) comprises a first sliding rod (231) and a second sliding rod (232), the first sliding rod (231) is in sliding connection with the second sliding rod (232), one ends of the first horizontal rod (221) and the second horizontal rod (222) which are deviated from each other extend to the side wall opposite to the support frame (21), one ends of the first sliding rod (231) and the second sliding rod (232) which are deviated from each other extend to the side wall opposite to the support frame (21), the side wall opposite to the support frame (21) is provided with a sliding groove (2111), two ends of the telescopic rod (22) and the guide rod (23) are respectively inserted into the sliding groove (1) and can slide up and down along the length direction of the sliding groove (2111) in a sliding way And a fixing piece (24) capable of fixing the telescopic rod (22) and the supporting frame (21) is arranged at one end of the telescopic rod (22) and one end of the guide rod (23) extending into the chute (2111).

8. A finishing ladder as set forth in claim 7 wherein: the fixing piece (24) comprises a fixture block (241), the fixture block (241) is perpendicular to the telescopic rod (22) and the fixture block (241) is horizontally arranged, the length of the fixture block (241) is larger than the width of the sliding groove (2111), one end of the fixture block (241) is located in the sliding groove (2111), the other end of the fixture block (241) penetrates through the side wall of the supporting frame (21) to extend out, a through groove (2112) is formed in the side wall, extending out of the supporting frame (21), of the fixture block (241), the length direction of the through groove (2112) is consistent with the length direction of the sliding groove (2111), an external thread is formed in the portion, extending out of the through groove (2112), of the fixture block (241), a bolt (242) is arranged in a matched mode with the external thread.