CN214498894U

CN214498894U - Portable ladder capable of moving transversely

Info

Publication number: CN214498894U
Application number: CN202023183156.8U
Authority: CN
Inventors: 盖立武; 史浩东; 顾星
Original assignee: Suzhou Vocational University
Current assignee: Suzhou Vocational University
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-10-26
Anticipated expiration: 2030-12-25

Abstract

The invention provides a portable ladder capable of moving transversely, which comprises a support frame main body and a ladder main body, wherein the support frame main body is provided with a support frame; the support frame main body comprises a main support frame which consists of an upper cross beam, a lower cross beam and two support columns, and the lower part of the main support frame is provided with a telescopic support frame assembly in a matching way; the upper end of the ladder main body is connected with the upper cross beam in a matched mode through a driving assembly, and the middle portion of the ladder main body is connected with the lower cross beam in a matched mode through a sliding connecting piece. According to the invention, the mode that the driving screw rod is matched with the screw rod groove is adopted, the driving screw rod is rotated by rotating the hand wheel, and the left and right movement of the ladder main body relative to the support frame main body is controlled under the action of the threads of the driving screw rod, so that the ladder is convenient and trouble-saving, the moving speed is high, the left and right carrying process after the ladder is taken off is omitted, the working time is effectively saved, and the working efficiency is improved.

Description

Portable ladder capable of moving transversely

Technical Field

The invention relates to the technical field of ladders, in particular to a portable ladder capable of moving transversely.

Background

In the machine manufacturing industry, a ladder is one of common tools in daily production and life of people, and the existing ladder has certain defects although the variety is various. For the personnel who use the ladder work, change the work area at every turn and must get off from the ladder and change the ladder position, the migration distance is little, and the number of times is frequent, not only wastes time and energy, and work efficiency reduces moreover.

Disclosure of Invention

In order to solve the problems, the invention discloses a portable ladder capable of moving transversely, which can directly control the left and right movement of the ladder by rotating a hand wheel, is convenient and trouble-saving, has high moving speed, saves the left and right carrying process after the ladder is taken off, effectively saves the working time and improves the working efficiency.

The specific scheme is as follows:

a portable laterally movable ladder characterized by: comprises a support frame main body and a ladder main body; the support frame main body comprises a main support frame which is of a rectangular frame structure and consists of an upper cross beam and a lower cross beam which are arranged up and down and two support columns which are arranged left and right, and a telescopic support frame assembly is arranged at the lower part of the main support frame in a matched mode; the upper end of the ladder main body is connected with the upper cross beam in a matched manner through a driving assembly, and the middle part of the ladder main body is connected with the lower cross beam in a matched manner through a sliding connecting piece; the driving component comprises a driving screw rod which is rotatably supported between the upper ends of the ladder main bodies and is horizontally arranged, the right end of the ladder is provided with a driven gear, the upper end of the right side of the ladder main body is provided with a hand wheel in a matching way, the middle part of the bottom surface of the hand wheel is provided with a driving bevel gear, the central axis of the driving bevel gear is collinear with the central axis of the hand wheel, a driven bevel gear is meshed with the driving screw rod, a support shaft is arranged in the middle of the driven bevel gear in a matching way and is parallel to the driving screw rod, and the supporting shaft is provided with a transmission gear in a matching way, the transmission gear is in transmission connection with the driven gear through a toothed belt, the middle part of the front side of the upper cross beam is provided with a horizontally arranged strip-shaped clamping groove along the length direction, the upper side and the lower side in the strip-shaped clamping groove are respectively provided with an upper clamping strip and a lower clamping strip, screw grooves matched with the driving screws are formed in the opposite side faces of the upper clamping strip and the lower clamping strip; the sliding connecting piece comprises a ball sliding block and a fixed shaft block, the middle part of the front side of the lower cross beam is provided with a horizontally arranged strip-shaped sliding block groove along the length direction of the lower cross beam, the ball sliding block can be arranged in the strip-shaped sliding block groove in a left-right sliding mode, the fixed shaft block is connected with the middle part of the ladder main body through a screw, the middle part of the rear side of the fixed shaft block is provided with a first rotating shaft which is rotatably connected with the fixed shaft block, the upper end of the first rotating shaft is rotatably connected with the fixed shaft block, the two sides of the lower end of the first rotating shaft are symmetrically provided with a second rotating shaft, the inner sides of the front end and the rear end of the second rotating shaft are respectively rotatably connected with the lower end of the first rotating shaft and the ball sliding block, the middle part of the second rotating shaft is provided with a cylindrical cavity along the axis direction, the front section of the cylindrical cavity is communicated with the inner side of the second rotating shaft, a sliding head capable of sliding along the front and the front of the cylindrical cavity is installed in a matching manner, and is connected with the upper end of the first rotating shaft through a telescopic rod, the upper end of the telescopic rod is rotatably connected with the side face of the first rotating shaft, and two pulleys which are symmetrically arranged left and right are arranged at the lower end of the ladder main body.

As a further improvement of the invention, the section of the strip-shaped clamping groove is an isosceles trapezoid with a large front part and a small back part.

As a further improvement of the ladder, the top of the upper cross beam is provided with a horizontally arranged strip-shaped sliding groove along the length direction, the section of the strip-shaped sliding groove is of an inverted T shape, two sliding blocks matched with the strip-shaped sliding groove are installed in the strip-shaped sliding groove in a matched mode, the upper end of each sliding block is provided with a hook in a matched mode, the upper end of the ladder main body is provided with two hanging rings which are symmetrically arranged left and right, and the hanging rings are matched with the hooks.

As a further improvement of the invention, two ends of the strip-shaped sliding groove are communicated with two ends of the upper cross beam, and the two ends of the strip-shaped sliding groove are connected with limit screws in a threaded manner.

As a further improvement of the invention, the lower part of the strip-shaped slide block groove is provided with a sliding connecting piece accommodating groove communicated with the strip-shaped slide block groove.

As a further improvement of the invention, a sliding rod matched with the cylindrical cavity is arranged on the front side of a sliding head, the sliding rod can be arranged in the cylindrical cavity in a front-back sliding mode, a spring is arranged at the rear end of the sliding rod, limiting grooves are uniformly distributed in the front-back direction of the top surface of the sliding rod, a rotating buckle is arranged on the second rotating shaft in a matched mode, two symmetrically arranged clamping heads are arranged at the bottom of the rotating buckle, and the clamping heads are matched with the limiting grooves.

As a further improvement of the invention, the telescopic support frame assembly comprises a first support frame and a second support frame which are arranged up and down, the first support frame comprises a first cross rod and first support rods which are symmetrically arranged at the left end and the right end of the first cross rod, the first support rods are vertical to the first cross rod, spring buckles are arranged outside the upper ends of the first support rods, the lower ends of the first support rods are fixedly connected with the end parts of the first cross rod, a first accommodating hole matched with the first support rod is upwards formed in the middle part of the lower ends of the support rods, a first clamping hole matched with the spring buckles is formed outside the lower ends of the support rods, and the first support rods can be arranged in the first accommodating holes in a vertically sliding manner; the second support frame includes that second horizontal pole and symmetry set up the second bracing piece at both ends about the second horizontal pole, the second bracing piece is mutually perpendicular with the second horizontal pole, installs the spring buckle on its upper end outward, the tip fixed connection of lower extreme and second horizontal pole, the lower extreme middle part of first bracing piece upwards offer with the second of second bracing piece looks adaptation accomodate the hole, its lower extreme outside be equipped with the second card hole of spring buckle looks adaptation, the second bracing piece can be gliding arrange the second in from top to bottom and accomodate in the hole.

As a further improvement of the invention, the bottoms of the two ends of the second cross rod are symmetrically provided with telescopic tripods, the upper ends of the telescopic tripods are provided with bulbs, the bottoms of the two ends of the second cross rod are symmetrically provided with tripod accommodating grooves, the tripod accommodating grooves are matched with the telescopic tripods, and one end of each tripod accommodating groove is matched and connected with the bulbs.

The invention has the beneficial effects that:

1. the structure is unique and ingenious, the mode that the driving screw rod is matched with the screw rod groove is adopted, the driving screw rod is rotated by rotating the hand wheel, and the left and right movement of the ladder main body relative to the support frame main body is controlled under the action of the threads of the driving screw rod, so that the ladder is convenient and trouble-saving, the moving speed is high, the left and right carrying process after the ladder is taken off is omitted, the working time is effectively saved, and the working efficiency is improved;

2. the arrangement of the sliding connecting piece not only ensures the stability of connection with the support frame main body and the smoothness of movement when the ladder main body moves left and right, but also enables the ladder main body to rotate at any angle relative to the support frame main body, thereby facilitating the storage of the ladder when the ladder is not used; in addition, the matching structure of the rotary buckle and the limiting groove can lock the relative angle between the first rotating shaft and the second rotating shaft, so that the stability between the ladder main body and the support frame main body is further ensured, the safety in use is greatly improved, and the ladder has a wide market prospect;

3. by adopting the telescopic support frame assembly, the occupied space of the invention after being stored can be further reduced, and the portability is improved.

Drawings

FIG. 1 is a schematic view of the present invention in use.

Fig. 2 is a schematic structural diagram of a driving assembly according to the present invention.

FIG. 3 is a schematic view of the main body of the stand of the present invention.

Fig. 4 is an enlarged view of the slip connector of fig. 3 when assembled.

Fig. 5 is a schematic view of a slip connector according to the present invention.

Fig. 6 is an internal structure view of the second rotating shaft on the right side in fig. 5.

Fig. 7 is an enlarged view of the end of the upper cross member in the present invention.

Figure 8 is a schematic view of a telescoping tripod according to the present invention.

Fig. 9 is a schematic view of a pulley of the present invention.

FIG. 10 is a schematic view of the present invention after storage.

List of reference numerals:

1-ladder body, 2-main support frame, 3-driving screw rod, 4-driven gear, 5-hand wheel, 6-driving bevel gear, 7-driven bevel gear, 8-toothed belt, 9-bar-shaped clamping groove, 10-upper clamping strip, 11-lower clamping strip, 12-ball sliding block, 13-fixed shaft block, 14-bar-shaped sliding block groove, 15-first rotating shaft, 16-second rotating shaft, 17-sliding head, 18-telescopic rod, 19-sliding wheel, 20-bar-shaped sliding groove, 21-sliding connector accommodating groove, 22-sliding rod, 23-spring, 24-rotating buckle, 25-first support frame, 26-second support frame, 27-spring buckle, 28-telescopic tripod, 29-tripod accommodating groove, 30-slide block, 31-hook, 32-hanging ring and 33-limit screw.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.

As shown in the drawings, a portable ladder which can move transversely comprises a support frame main body and a ladder main body 1; the support frame main body comprises a main support frame 2, the main support frame 2 is of a rectangular frame structure and consists of an upper cross beam and a lower cross beam which are arranged up and down and two support columns which are arranged left and right, and a telescopic support frame assembly is arranged at the lower part of the main support frame 2 in a matching way; the upper end of the ladder main body 1 is connected with the upper cross beam in a matching way through a driving assembly, and the middle part of the ladder main body is connected with the lower cross beam in a matching way through a sliding connecting piece; the driving component comprises a driving screw rod 3 which is rotatably supported between the upper ends of the ladder main bodies 1, the driving screw rod 3 is horizontally arranged, the right end of the ladder is provided with a driven gear 4, the upper end of the right side of the ladder main body 1 is provided with a hand wheel 5 in a matching way, the middle part of the bottom surface of the hand wheel 5 is provided with a driving bevel gear 6, the central axis of the driving bevel gear 6 is collinear with the central axis of the hand wheel 5, a driven bevel gear 7 is meshed with the driving screw rod, a supporting shaft is arranged in the middle of the driven bevel gear 7 in a matching way and is parallel to the driving screw rod 3, a transmission gear is arranged on the supporting shaft in a matching way, the transmission gear is in transmission connection with the driven gear 4 through a toothed belt 8, a horizontally arranged strip-shaped clamping groove 9 is arranged in the middle of the front side of the upper cross beam along the length direction of the upper cross beam, an upper clamping strip 10 and a lower clamping strip 11 are respectively arranged on the upper side and the lower side in the strip-shaped clamping groove 9, screw grooves matched with the driving screws 3 are formed in opposite side faces of the upper clamping strip 10 and the lower clamping strip 11; the sliding connecting piece comprises a ball sliding block 12 and a fixed shaft block 13, the middle part of the front side of the lower beam is provided with a horizontally arranged strip-shaped sliding block groove 14 along the length direction, the ball sliding block 12 can slide left and right and is arranged in the strip-shaped sliding block groove 14, the fixed shaft block 13 is connected with the middle part of the ladder main body 1 through a screw, the middle part of the rear side of the fixed shaft block 13 is provided with a first rotating shaft 15 which is rotatably connected with the fixed shaft block, the upper end of the first rotating shaft 15 is rotatably connected with the fixed shaft block 13, the two sides of the lower end are symmetrically provided with a second rotating shaft 16, the inner sides of the front end and the rear end of the second rotating shaft 16 are respectively rotatably connected with the lower end of the first rotating shaft 15 and the ball sliding block 12, the middle part of the second rotating shaft 16 is provided with a cylindrical cavity along the axial direction, the front section of the cylindrical cavity is communicated with the inner side of the second rotating shaft 16, a sliding head 17 which can slide back and forth is arranged in the cylindrical cavity in a matching way, and forth way, the sliding head 17 is connected with the upper end of the first rotating shaft 16 through an expansion link 18, the upper end of the telescopic rod 18 is rotatably connected with the side surface of the first rotating shaft 15, and the lower end of the ladder main body 1 is provided with two pulleys 19 which are arranged symmetrically left and right.

Before the ladder is used, firstly, the support frame main body and the ladder main body 1 are placed in an A shape, and the clamping fit of the driving screw 3 and the screw grooves of the upper clamping strip 10 and the lower clamping strip 11 is confirmed; when in use, the principle of controlling the ladder main body 1 to move left and right is as follows: the hand wheel 5 is rotated, the hand wheel 5 drives the driving bevel gear 6 to rotate, the driving screw 3 is rotated through the transmission of the driven gear 7 and the toothed belt 8, the ladder main body 1 moves leftwards or rightwards under the matching action of the threads on the outer side of the driving screw and the screw groove, the convenience and the trouble are saved, the moving speed is high, the left and right carrying process after the ladder is put is omitted, the working time is effectively saved, and the working efficiency is improved.

In this embodiment, the cross-section of bar draw-in groove 9 is preceding big isosceles trapezoid that the back is little, and this design is half enclosed type, can promote two upper and lower card strips to initiative screw rod 3's parcel nature, has ensured the stability of initiative screw rod 3 with the screw rod groove is connected, has guaranteed the reliability of ladder main part 1 side-to-side movement.

In the embodiment, the top of the upper cross beam is provided with a horizontally arranged strip-shaped chute 20 along the length direction, the section of the strip-shaped chute 20 is of an inverted T shape, two sliding blocks 30 matched with the strip-shaped chute 20 are installed in the strip-shaped chute 20 in a matching manner, a hook 31 is installed at the upper end of each sliding block 30 in a matching manner, two hanging rings 32 symmetrically arranged left and right are arranged at the upper end of the ladder main body 1, and each hanging ring 32 is matched with the hook 31; when the ladder is used, the hanging ring 32 at the upper end of the ladder main body 1 is connected through the hook 31, so that the transmission reliability of the driving component at the upper end of the ladder main body 1 is ensured; in addition, the both ends of bar spout 20 and the both ends intercommunication of entablature, and threaded connection has stop screw 33 in the both ends of bar spout 20, on the one hand, has made things convenient for slider 30's dismouting, and on the other hand can prevent slider 30 from the tip roll-off of bar spout 20, promotes the security.

In this embodiment, the lower portion of the bar-shaped slider groove 14 is provided with a sliding connector accommodating groove 21 communicating therewith, so that the sliding connector can be engaged with the connector accommodating groove 21 when the ladder is accommodated, and the gap between the ladder main body 1 and the support frame main body when the ladder is accommodated can be further reduced.

In this embodiment, the front side of a sliding head is equipped with the slide bar 22 with cylinder chamber looks adaptation, slide bar 22 can be around gliding arrange the cylinder chamber in, its rear end is equipped with spring 23, the top surface has the spacing groove from the past backward equipartition, rotatory buckle 24 is installed in the cooperation on the second axis of rotation 16, the bottom of rotatory buckle 24 is equipped with the dop that the bisymmetry set up, dop and spacing groove looks adaptation, the relative angle of first axis of rotation 15 of lockable and second axis of rotation 16, thereby further ensured the stability between ladder main part 1 and support frame main part, promote the security when using by a wide margin.

In this embodiment, the telescopic support frame assembly comprises a first support frame 25 and a second support frame 26 which are arranged up and down, the first support frame 25 comprises a first cross rod and first support rods which are symmetrically arranged at the left end and the right end of the first cross rod, the first support rods are perpendicular to the first cross rod, spring buckles 27 are arranged outside the upper ends of the first support rods, the lower ends of the first support rods are fixedly connected with the end parts of the first cross rod, first accommodating holes matched with the first support rods are formed in the middle parts of the lower ends of the support rods upwards, first clamping holes matched with the spring buckles 27 are formed in the outer sides of the lower ends of the support rods, and the first support rods can be arranged in the first accommodating holes in a vertical sliding manner; the second support frame 26 comprises a second cross rod and second support rods symmetrically arranged at the left end and the right end of the second cross rod, the second support rods are perpendicular to the second cross rod, the spring fasteners 27 are arranged outside the upper ends of the second support rods, the lower ends of the second support rods are fixedly connected with the end parts of the second cross rod, the middle part of the lower end of the first support rod is upwards provided with a second accommodating hole matched with the second support rod, the outer side of the lower end of the first support rod is provided with a second fastener hole matched with the spring fasteners 27, and the second support rods can be arranged in the second accommodating hole in a vertical sliding manner; when in use, the relative positions of the first support frame 25 and the second support frame 26 can be fixed through the spring clamping holes 27, so that the stability of the support frame main body is improved, when in storage, the second support frame 26 can be stored in the first support frame 26, and the first support frame 26 can be stored in the main support frame 2, so that the occupied space after the storage of the portable folding table is further reduced, and the portability is improved.

In this embodiment, the both ends bottom symmetry of second horizontal pole is equipped with telescopic tripod 28, and telescopic tripod 28's upper end is equipped with the bulb, and the both ends bottom symmetry of second horizontal pole is equipped with tripod and accomodates groove 29, and tripod accomodates groove 29 and telescopic tripod 28 looks adaptation, and its one end is connected with the bulb cooperation, and on the one hand, during the use, telescopic tripod 28 can strengthen the stability of support frame main part, and on the other hand, when accomodating, telescopic tripod 28 can accomodate among the tripod accomodates groove 29, and the reduction space occupies.

The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features.

Claims

1. A portable laterally movable ladder characterized by: comprises a support frame main body and a ladder main body (1);

the support frame main body comprises a main support frame (2), the main support frame (2) is of a rectangular frame structure and consists of an upper cross beam and a lower cross beam which are arranged up and down and two support columns which are arranged left and right, and a telescopic support frame assembly is arranged at the lower part of the main support frame (2) in a matched mode;

the upper end of the ladder main body (1) is connected with the upper cross beam in a matched manner through a driving assembly, and the middle part of the ladder main body is connected with the lower cross beam in a matched manner through a sliding connecting piece; the driving assembly comprises a driving screw rod (3) which is rotatably supported between the upper ends of the ladder main bodies (1), the driving screw rod (3) is horizontally arranged, the right end of the driving screw rod is provided with a driven gear (4), a hand wheel (5) is installed at the upper end of the right side of the ladder main bodies (1) in a matched mode, a driving bevel gear (6) is arranged in the middle of the bottom surface of the hand wheel (5), the central axis of the driving bevel gear (6) is collinear with the central axis of the hand wheel (5) and is meshed with a driven bevel gear (7), a supporting shaft is installed in the middle of the driven bevel gear (7) in a matched mode and is parallel to the driving screw rod (3), a transmission gear is installed on the supporting shaft in a matched mode, the transmission gear is in transmission connection with the driven gear (4) through a toothed belt (8), and a horizontally arranged strip-shaped clamping groove (9) is formed in the middle of the front side of the upper cross beam along the length direction, an upper clamping strip (10) and a lower clamping strip (11) are respectively arranged on the upper side and the lower side in the strip-shaped clamping groove (9), and screw grooves matched with the driving screw rods (3) are respectively formed in opposite side surfaces of the upper clamping strip (10) and the lower clamping strip (11); the sliding connecting piece comprises a ball sliding block (12) and a fixed shaft block (13), a horizontally arranged strip-shaped sliding block groove (14) is formed in the middle of the front side of the lower cross beam along the length direction of the lower cross beam, the ball sliding block (12) can be arranged in the strip-shaped sliding block groove (14) in a left-right sliding mode, the fixed shaft block (13) is connected with the middle of the ladder main body (1) through a screw, a first rotating shaft (15) in rotating connection with the fixed shaft block is arranged in the middle of the rear side of the fixed shaft block (13), the upper end of the first rotating shaft (15) is in rotating connection with the fixed shaft block (13), second rotating shafts (16) are symmetrically arranged on two sides of the lower end of the fixed shaft block, the inner sides of the front end and the rear end of each second rotating shaft (16) are respectively in rotating connection with the lower end of the first rotating shaft (15) and the ball sliding block (12), a cylindrical cavity is formed in the middle of the second rotating shaft (16) along the axis direction of the second rotating shaft, and the front section of the cylindrical cavity is communicated with the inner sides of the second rotating shafts (16), the ladder is characterized in that a sliding head (17) capable of sliding back and forth along the cylindrical cavity is installed in the cylindrical cavity in a matched mode, the sliding head (17) is connected with the upper end of the first rotating shaft (15) through an expansion rod (18), the upper end of the expansion rod (18) is rotatably connected with the side face of the first rotating shaft (15), and two pulleys (19) which are arranged in bilateral symmetry are arranged at the lower end of the ladder main body (1).

2. A laterally movable, portable ladder as set forth in claim 1 wherein: the section of the strip-shaped clamping groove (9) is an isosceles trapezoid with a large front part and a small back part.

3. A laterally movable, portable ladder as set forth in claim 1 wherein: the top of entablature is equipped with bar spout (20) that the level set up along its length direction, the cross-section of bar spout (20) is the type of falling T, and slider (30) of two rather than looks adaptation are installed in cooperation in bar spout (20), couple (31) are installed in slider (30) upper end cooperation, the upper end of ladder main part (1) is equipped with link (32) that two bilateral symmetry set up, link (32) and couple (31) looks adaptation.

4. A laterally movable, portable ladder as set forth in claim 3 wherein: the two ends of the strip-shaped sliding groove (20) are communicated with the two ends of the upper cross beam, and the two ends of the strip-shaped sliding groove (20) are connected with limiting screws (33) in a threaded mode.

5. A laterally movable, portable ladder as set forth in claim 1 wherein: the lower part of the strip-shaped slide block groove (14) is provided with a sliding connecting piece accommodating groove (21) communicated with the strip-shaped slide block groove.

6. A laterally movable, portable ladder as set forth in claim 1 wherein: the front side of a sliding head is provided with a sliding rod (22) matched with the cylindrical cavity, the sliding rod (22) can slide back and forth and is arranged in the cylindrical cavity, the rear end of the sliding rod is provided with a spring (23), the top surface of the sliding rod is uniformly provided with limiting grooves from front to back, a second rotating shaft (16) is provided with a rotating buckle (24) in a matched mode, the bottom of the rotating buckle (24) is provided with two symmetrically-arranged clamping heads, and the clamping heads are matched with the limiting grooves.

7. A laterally movable, portable ladder as set forth in claim 1 wherein: the telescopic support frame assembly comprises a first support frame (25) and a second support frame (26) which are arranged up and down, the first support frame (25) comprises a first cross rod and first support rods which are symmetrically arranged at the left end and the right end of the first cross rod, the first support rods are perpendicular to the first cross rod, spring buckles (27) are arranged outside the upper ends of the first support rods, the lower ends of the first support rods are fixedly connected with the end parts of the first cross rod, first accommodating holes matched with the first support rods are formed in the middle parts of the lower ends of the support rods upwards, first clamping holes matched with the spring buckles (27) are formed in the outer sides of the lower ends of the support rods, and the first support rods can be arranged in the first accommodating holes in a vertically sliding mode; second support frame (26) include that second horizontal pole and symmetry set up the second bracing piece at the second horizontal pole left and right ends, the second bracing piece is perpendicular with the second horizontal pole, and its upper end installs spring buckle (27) outward, the tip fixed connection of lower extreme and second horizontal pole, the lower extreme middle part of first bracing piece upwards offer with the second of second bracing piece looks adaptation accomodate the hole, its lower extreme outside be equipped with the second card hole of spring buckle (27) looks adaptation, the second bracing piece can be gliding arrange the second in from top to bottom and accomodate the hole.

8. A laterally movable, portable ladder as set forth in claim 7 wherein: the utility model discloses a telescopic tripod, including first horizontal pole, second horizontal pole, telescopic tripod (28) are equipped with to the both ends bottom symmetry of second horizontal pole, the upper end of telescopic tripod (28) is equipped with the bulb, the both ends bottom symmetry of second horizontal pole is equipped with tripod and accomodates groove (29), tripod is accomodate groove (29) and telescopic tripod (28) looks adaptation, and its one end is connected with the bulb cooperation.