CN221074060U - Folding ladder with armrests - Google Patents

Abstract

A folding ladder with handrails comprises a folding ladder body and an inverted U-shaped rod, wherein the handrails are arranged on two front foot tubes of the folding ladder body. The top end of the grab rail is sleeved with a first connecting sleeve. The bottom of the inverted U-shaped rod is sleeved with a second connecting sleeve. The bottom end of the second connecting sleeve is rotationally connected with the top end of the first connecting sleeve through a rotating piece. The rotating piece comprises a first connecting block, a second connecting block, a cylindrical rotating block, a rotating shaft, a spring and a button. The utility model can rotate the inverted U-shaped rod and adjust the high end of the top end of the inverted U-shaped rod, so that the inverted U-shaped rod is effectively applicable to users with different heights.

Description

Folding ladder with armrests

Technical Field

The utility model relates to the technical field of ladders, in particular to a folding ladder with handrails.

Background

The folding ladder is used as an auxiliary climbing tool and is mainly used for people to perform climbing operation.

The applicant has previously submitted and issued an utility model patent entitled "a collapsible armrest structure for a ladder" to the national patent office, entitled "CN207960474U". The foldable handrail tube is arranged on the front foot tube of the ladder, so that the ladder is convenient for a user to climb, and space occupation can be reduced after the ladder is folded. Meanwhile, an inverted U-shaped rod (as can be seen in fig. 5 a) which also plays a role of a handrail is arranged at the top end of the ladder, and a user can hold the inverted U-shaped rod while standing on the topmost pedal.

In the actual use process, the applicant finds that because the height of the inverted U-shaped rod is fixed, users with different heights cannot comfortably hold the inverted U-shaped rod when standing on the topmost pedal.

Therefore, the utility model provides a technical scheme for solving the problem that the height of the inverted U-shaped rod cannot be adjusted, so that the inverted U-shaped rod cannot be effectively applied to users with different heights.

Disclosure of utility model

Aiming at the defects existing in the prior art, the utility model aims to provide the folding ladder with the handrails, which aims to achieve the technical effects that the inverted U-shaped rod can rotate so as to adjust the high end of the top end of the inverted U-shaped rod, thereby being effectively applicable to users with different heights.

The folding ladder with the handrails comprises a folding ladder body and an inverted U-shaped rod, wherein the two front foot pipes of the folding ladder body are respectively provided with a handrail rod, two connecting rods are connected between the handrail rods and the front foot pipes, the top ends of the handrail rods extend to the upper part of the folding ladder body and are sleeved with first connecting sleeves, the bottom ends of the inverted U-shaped rods are sleeved with second connecting sleeves, the bottom ends of the second connecting sleeves are rotatably connected with the top ends of the first connecting sleeves through rotating pieces, and each rotating piece comprises a first connecting block, a second connecting block, a cylindrical rotating block, a rotating shaft and a button;

The first connecting block is fixed at the top end of the first connecting sleeve, a first cylindrical groove is formed in one side of the first connecting block, a first shaft hole is formed in the center of the bottom of the first cylindrical groove, a first annular plate is fixed at the edge of the bottom of the first cylindrical groove, and a first annular tooth-shaped structure is fixed on the inner side wall of the first annular plate;

The second connecting block is fixed at the bottom end of the second connecting sleeve and is attached to one side of the first connecting block, a second cylindrical groove corresponding to the first cylindrical groove is formed in one side, close to the first connecting block, of the second connecting block, a large through groove is formed in the center of the bottom of the second cylindrical groove, a fixing plate is further fixed in the center of the bottom of the second cylindrical groove, at least two small through grooves are formed in the edge of the fixing plate, one part of each small through groove corresponds to each large through groove, the other part of each small through groove is staggered with each large through groove, a second shaft hole corresponding to the first shaft hole is formed in the center of the fixing plate, a second annular plate corresponding to the first annular plate is fixed in the edge of the bottom of the second cylindrical groove, and a second annular toothed structure corresponding to the first annular toothed structure is fixed on the inner side wall of the second annular plate;

one part of the cylindrical rotating block is positioned in the first annular plate, the other part of the cylindrical rotating block is positioned in the second annular plate, one side of the cylindrical rotating block is attached to the fixed plate, a gap is reserved between the other side of the cylindrical rotating block and the bottom of the first cylindrical groove, the thickness of the cylindrical rotating block is larger than the distance between the notch of the human cylindrical groove and the fixed plate, the thickness of the cylindrical rotating block is smaller than or equal to the depth of the first cylindrical groove, a third annular toothed structure which is connected with the first annular toothed structure and the second annular toothed structure in a matched mode is arranged on the outer side wall of the cylindrical rotating block, and a third shaft hole corresponding to the second shaft hole is formed in the center position of the cylindrical rotating block;

The rotary shaft sequentially passes through the first shaft hole, the first cylindrical groove, the third shaft hole, the second cylindrical groove and the second shaft hole, riveting heads are arranged at two ends of the rotary shaft, a spring is sleeved outside the rotary shaft, and two ends of the spring are respectively propped against the bottom of the first cylindrical groove and the cylindrical rotating block;

one side of being close to the fixed plate on the button is fixed with two piece at least and presses the pole, press the lateral wall of pole and button and all laminate with big logical groove, press the one end that deviates from the button on the pole and pass big logical groove and lie in little logical inslot and be fixed with the cardboard of card at the tank bottom of second cylinder type recess.

Through adopting above-mentioned technical scheme, when the rotatory reverse U type pole of needs, press the button, the button is along the cell wall in big logical groove to big logical inslot removal. The pressing rod moves into the second cylindrical groove along the groove wall of the large through groove. The pressing rod pushes the cylindrical rotating block. The cylindrical rotating block is stably moved along the gap between the teeth on the first and second annular tooth structures by the third annular tooth structure thereon. When the button is completely positioned in the large through groove, the cylindrical rotating block is completely positioned in the first annular plate, and the third annular tooth-shaped structure on the cylindrical rotating block is no longer in matched connection with the second annular tooth-shaped structure. And at this time the spring is compressed to form a repulsive force. Then the inverted U-shaped rod is rotated, the inverted U-shaped rod drives the second connecting sleeve, and the second connecting sleeve drives the second connecting block to rotate on the rotating shaft along with the first connecting block. The inverted U-shaped rod can be rotated, so that the height of the inverted U-shaped rod can be adjusted. Similarly, when the height of the rotary inverted U-shaped rod is adjusted, the button is released. Under the action of the spring resilience force, the cylindrical rotating block and the button move and reset. A part of the cylindrical rotating block is positioned in the first annular plate, and another part of the cylindrical rotating block is positioned in the second annular plate. The third annular toothed structure is in fit connection with both the first annular toothed structure and the second annular toothed structure. At this time, because the first connecting block is fixed on the grab bar through the first connecting sleeve, the first connecting block cannot rotate, and the third annular tooth-shaped structure is connected with the first annular tooth-shaped structure in a matched manner, and under the premise that the first connecting block cannot rotate, the cylindrical rotating block cannot rotate. And because the third annular toothed structure is connected with the second annular toothed structure in a matched manner, the second connecting block cannot rotate on the premise that the cylindrical rotating block cannot rotate. Thereby fixing the inverted U-shaped rod. The utility model can rotate the inverted U-shaped rod and adjust the high end of the top end of the inverted U-shaped rod, so that the inverted U-shaped rod is effectively applicable to users with different heights.

The utility model is further provided with: the first annular space is reserved between the first annular plate and the groove wall of the first cylindrical groove, the second annular space is reserved between the second annular plate and the groove wall of the second cylindrical groove, and a plurality of sliding rods which are used for being inserted into the first annular space and sliding along the first annular space are fixed in the second annular space.

Through adopting above-mentioned technical scheme, the second connecting block is at rotatory in-process, and the slide bar slides in first annular interval to promote the connection stability between first connecting block and the second connecting block.

The utility model is further provided with: a sinking groove for inserting the riveting head is formed in one side, close to the fixing plate, of the button.

By adopting the technical scheme, when the button is completely positioned in the large through groove, the riveting head is positioned in the sinking groove. The riveting head is prevented from obstructing the movement of the button.

The utility model is further provided with: the pipe sleeve corresponding to the first shaft hole is fixed at the center of the bottom of the first cylindrical groove, a containing groove for the pipe sleeve to penetrate is formed in the center of one side, deviating from the fixed plate, of the cylindrical rotating block, and the third shaft hole is formed in the center of the bottom of the containing groove.

Through adopting above-mentioned technical scheme, pass the pipe box after the pivot passes first shaft hole, the connection stability between first linkage piece and the pivot can be promoted in the setting of pipe box.

The utility model is further provided with: the connecting rod is detachably connected with the front foot pipe through bolts.

By adopting the technical scheme, the grab rail can be detached during transportation or storage, so that the purpose of saving space is achieved.

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

1. The utility model can rotate the inverted U-shaped rod and adjust the high end of the top end of the inverted U-shaped rod, so that the inverted U-shaped rod is effectively applicable to users with different heights.

2. The grab rail is detached from the front foot pipe, so that the storage space can be saved, and when the grab rail is stored, the inverted U-shaped rod is rotated, so that the inverted U-shaped rod is folded and folded, and the storage space is further saved.

Drawings

FIG. 1 is a schematic view of a folding ladder with handrails according to the present utility model;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a cross-sectional view of a swivel member of a folding ladder with handrails of the present utility model;

FIG. 4 is an enlarged view at B in FIG. 3;

Fig. 5 is a schematic structural view of a first connection sleeve and a first connection block of a folding ladder with handrails according to the present utility model;

fig. 6 is a schematic structural view of a second connecting sleeve and a second connecting block of a folding ladder with handrails according to the present utility model;

FIG. 7 is a schematic view of a cylindrical rotating block of a folding ladder with handrails according to the present utility model;

fig. 8 is a schematic view showing the structure of a push button of a folding ladder with handrails according to the present utility model.

Reference numerals: 1. a folding ladder body; 2. an inverted U-shaped rod; 3. a grab rail; 4. a front foot tube; 5. a rear foot tube; 6. a folding structure; 7. a cross bar; 8. a vertical rod; 9. a connecting rod; 10. a first connection sleeve; 11. a first connection block; 12. a first cylindrical groove; 13. a first shaft hole; 14. a pipe sleeve; 15. a first annular plate; 16. a first annular space; 17. a first annular tooth structure; 18. a second connecting sleeve; 19. a second connection block; 20. a second cylindrical groove; 21. a large through groove; 22. a fixing plate; 23. a small through groove; 24. a second shaft hole; 25. a second annular plate; 26. a second annular space; 27. a slide bar; 28. a second annular tooth structure; 29. a cylindrical rotating block; 30. a third annular tooth structure; 31. a receiving groove; 32. a third shaft hole; 33. a rotating shaft; 34. a riveting head; 35. a spring; 36. a button; 37. pressing a pressing rod; 38. a clamping plate; 39. sinking groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

A folding ladder with handrails, as shown in fig. 1-8, comprises a folding ladder body 1, an inverted U-shaped rod 2 and two handrails 3.

The folding ladder body 1 comprises two front foot tubes 4, two rear foot tubes 5 and a folding structure 6. The folding ladder body 1 is a mature prior art and will not be described in detail here. Reference is made in this embodiment to the description of a height-adjustable folding ladder according to chinese patent publication No. CN 218581543U.

The inverted U-shaped rod 2 comprises a cross rod 7 and two vertical rods 8. The inverted U-shaped bar 2 is well known in the art and will not be described in detail herein.

The two grab rails 3 respectively correspond to the two front foot pipes 4. Two connecting rods 9 are fixed on the grab rail 3. The connecting rod 9 is detachably connected with the grab rail 3 through bolts. The top end of the grab rail 3 extends to the upper part of the folding ladder body 1, and is sleeved and fixed with a first connecting sleeve 10 through bolts. A first connection block 11 is fixed to the top end of the first connection sleeve 10. A first cylindrical recess 12 is provided at one side of the first connection block 11. A first shaft hole 13 is formed in the center of the bottom of the first cylindrical groove 12. A pipe sleeve 14 corresponding to the first shaft hole 13 is fixed at the center of the bottom of the first cylindrical groove 12. A first annular plate 15 is fixed at the bottom edge of the first cylindrical groove 12. A first annular space 16 is reserved between the first annular plate 15 and the groove wall of the first cylindrical groove 12. A first annular toothed structure 17 is fixed to the inner side wall of the first annular plate 15.

The two vertical rods 8 respectively correspond to the two grab rails 3. The bottom end of the vertical rod 8 is sleeved and fixed with a second connecting sleeve 18 through bolts. A second connecting block 19 is fixed at the bottom end of the second connecting sleeve 18. One side of the second connection block 19 is attached to the first connection block 11. A second cylindrical groove 20 corresponding to the first cylindrical groove 12 is formed on one side of the second connecting block 19, which is close to the first connecting block 11. A large through groove 21 is formed in the center of the bottom of the second cylindrical groove 20. A fixing plate 22 is also fixed at the center of the bottom of the second cylindrical groove 20. Two small through grooves 23 are formed in the edge positions of the fixing plate 22. A part of the small through groove 23 corresponds to the large through groove 21, and the other part of the small through groove 23 is offset from the large through groove 21. The fixing plate 22 is provided with a second shaft hole 24 corresponding to the first shaft hole 13 at a center position. A second annular plate 25 corresponding to the first annular plate 15 is fixed at the bottom edge position of the second cylindrical groove 20. A second annular space 26 is reserved between the second annular plate 25 and the groove wall of the second cylindrical groove 20. A plurality of sliding bars 27 are fixed in the second annular space 26 for inserting the first annular space 16 and sliding along the first annular space 16. A second annular tooth structure 28 corresponding to the first annular tooth structure 17 is fixed to the inner side wall of the second annular plate 25. The second annular tooth structure 28 has the same modulus, number of teeth, tooth width, center distance and tooth shape as the first annular tooth structure 17. A strip-shaped gap extending from left to right is formed between the second annular tooth-like structure 28 and two adjacent teeth on the first annular tooth-like structure 17.

When the first connecting block 11 and the second connecting block 19 are attached, the first cylindrical groove 12 and the second cylindrical groove 20 form a cylindrical cavity. A cylindrical rotating block 29 is provided in the cylindrical cavity. A portion of the cylindrical rotating block 29 is located within the first annular plate 15. Another part of the cylindrical rotating block 29 is located in the second annular plate 25. One side of the cylindrical rotating block 29 is attached to the fixed plate 22. A space remains between the other side of the cylindrical rotating block 29 and the bottom of the first cylindrical recess. The thickness of the cylindrical rotating block 29 is greater than the distance between the notch of the human cylindrical groove and the fixed plate 22. The thickness of the cylindrical rotating block 29 is equal to or less than the depth of the first cylindrical groove 12. The outer side wall of the cylindrical rotating block 29 is provided with a third annular toothed structure 30 which is in fit connection with the first annular toothed structure 17 and the second annular toothed structure 28. I.e. the cylindrical rotating block 29 can be moved left and right along the respective strip-shaped slits by means of the third annular tooth-like structure 30. The cylindrical rotating block 29 is provided with a receiving groove 31 at the center of the side facing away from the fixed plate 22 for the pipe sleeve 14 to penetrate. A third shaft hole 32 corresponding to the second shaft hole 24 is formed in the center of the bottom of the accommodating groove 31.

A rotating shaft 33 is arranged between the first connecting block 11 and the second connecting block 19 in a penetrating way, and the first connecting block 11 and the second connecting block are connected in a rotating way through the rotating shaft 33. The rotating shaft 33 is in fit connection with the first shaft hole 13, the second shaft hole 24 and the third shaft hole 32. The rotation shaft 33 sequentially passes through the first shaft hole 13, the pipe sleeve 14, the first cylindrical groove 12, the accommodating groove 31, the third shaft hole 32, the second cylindrical groove 20 and the second shaft hole 24, and both ends thereof are provided with the rivet head 34. The outer parts of the rotating shaft 33 and the pipe sleeve 14 are sleeved with springs 35. Both ends of the spring 35 are respectively abutted against the groove bottom of the first cylindrical groove 12 and the groove bottom of the accommodating groove 31.

The second connection block 19 is provided with a button 36. Two pressing rods 37 are fixed to the button 36 at a side close to the fixing plate 22. The outer side walls of the pressing rod 37 and the button 36 are attached to the large through groove 21. One end of the pressing rod 37, which is away from the button 36, passes through the large through groove 21 and is positioned in the small through groove 23, and a clamping plate 38 which is clamped at the bottom of the second cylindrical groove 20 is fixed. A countersunk slot 39 is formed in the button 36 on a side of the button adjacent to the fixed plate 22 for inserting the riveting head 34.

Working principle: when it is necessary to rotate the inverted U-shaped lever 2, the button 36 is pressed, and the button 36 moves along the groove wall of the large through groove 21 into the large through groove 21. The button 36 drives the pressing rod 37 to move along the groove wall of the large through groove 21 into the second cylindrical groove 20. The pressing lever 37 pushes the cylindrical rotating block 29. The cylindrical rotating block 29 is stably moved into the first cylindrical recess 12 along each bar slit by the third annular tooth structure 30. When the push button 36 is fully seated in the large through slot 21, the cylindrical rotating block 29 is fully seated in the first annular plate 15, and the third annular tooth structure 30 thereon is no longer in mating engagement with the second annular tooth structure 28. And at this time the spring 35 is compressed to form a repulsive force. Then the inverted U-shaped rod 2 is rotated, the inverted U-shaped rod 2 drives the second connecting sleeve 18, and the second connecting sleeve 18 drives the second connecting block 19 to rotate on the rotating shaft 33 against the first connecting block 11. The inverted U-shaped rod 2 can be rotated to adjust its height.

Similarly, when the height of the rotating inverted U-shaped lever 2 is adjusted, the button 36 is released. The cylindrical rotating block 29 and the button 36 are moved to be restored by the elastic force of the spring 35. A part of the cylindrical rotating block 29 is located in the first annular plate 15, and another part of the cylindrical rotating block 29 is located in the second annular plate 25. The third annular toothed structure 30 is in mating connection with both the first annular toothed structure 17 and the second annular toothed structure 28. At this time, since the first connecting block 11 is fixed to the grab bar 3 through the first connecting sleeve 10, the first connecting block 11 cannot rotate, and the third annular tooth structure 30 is connected to the first annular tooth structure 17 in a matching manner, the cylindrical rotating block 29 cannot rotate on the premise that the first connecting block 11 cannot rotate. Since the third annular tooth structure 30 is cooperatively connected with the second annular tooth structure 28, the second connecting block 19 cannot rotate on the premise that the cylindrical rotating block 29 cannot rotate. Thereby fixing the inverted U-shaped rod 2.

It should be noted that, after the second connection block 19 rotates by a certain angle, the second annular tooth structure 28 may be offset from the second annular tooth structure 28 (i.e. the bar-shaped slot on the second annular tooth structure 28 does not correspond to the bar-shaped slot on the first annular tooth structure 17), and only the second connection block 19 needs to be turned by a very small extent to be finely adjusted.

The utility model can rotate the inverted U-shaped rod 2 and adjust the high end of the top end of the inverted U-shaped rod 2, so that the inverted U-shaped rod 2 is effectively applicable to users with different heights.

In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (5)

1. The utility model provides a folding ladder with handrail, includes folding ladder body (1) and falls U type pole (2), all be provided with handrail pole (3) on two preceding foot pipes (4) of folding ladder body (1), be connected with two connecting rods (9), its characterized in that between handrail pole (3) and preceding foot pipe (4): the top end of the grab rail (3) extends to the upper part of the folding ladder body (1), a first connecting sleeve (10) is sleeved on the grab rail, a second connecting sleeve (18) is sleeved on the bottom end of the inverted U-shaped rod (2), the bottom end of the second connecting sleeve (18) is rotationally connected with the top end of the first connecting sleeve (10) through a rotating piece, and the rotating piece comprises a first connecting block (11), a second connecting block (19), a cylindrical rotating block (29), a rotating shaft (33) and a button (36);

The connecting device comprises a first connecting block (11), a first annular plate (15) and a first annular toothed structure (17), wherein the first connecting block (11) is fixed at the top end of a first connecting sleeve (10), a first cylindrical groove (12) is formed in one side of the first connecting block (11), a first shaft hole (13) is formed in the center of the bottom of the first cylindrical groove (12), a first annular plate (15) is fixed at the edge of the bottom of the first cylindrical groove (12), and a first annular toothed structure (17) is fixed on the inner side wall of the first annular plate (15);

The second connecting block (19) is fixed at the bottom end of the second connecting sleeve (18) and is attached to one side of the first connecting block (11), a second cylindrical groove (20) corresponding to the first cylindrical groove (12) is formed in one side, close to the first connecting block (11), of the second connecting block (19), a large through groove (21) is formed in the central position of the groove bottom of the second cylindrical groove (20), a fixing plate (22) is further fixed in the central position of the groove bottom of the second cylindrical groove (20), at least two small through grooves (23) are formed in the edge position of the fixing plate (22), one part of the small through grooves (23) corresponds to the large through grooves (21), the other part of the small through grooves (23) is staggered with the large through grooves (21), a second shaft hole (24) corresponding to the first shaft hole (13) is formed in the central position of the fixing plate (22), a second annular plate (25) corresponding to the first annular plate (15) is fixed in the central position of the groove bottom of the second cylindrical groove (20), and the second annular plate (25) corresponds to the annular plate (25) in a ring-shaped structure corresponding to the annular tooth (17);

One part of the cylindrical rotating block (29) is positioned in the first annular plate (15), the other part of the cylindrical rotating block (29) is positioned in the second annular plate (25), one side of the cylindrical rotating block (29) is attached to the fixed plate (22), a space is reserved between the other side of the cylindrical rotating block (29) and the bottom of the first cylindrical groove, the thickness of the cylindrical rotating block (29) is larger than the distance between the notch of the cylindrical groove and the fixed plate (22), the thickness of the cylindrical rotating block (29) is smaller than or equal to the depth of the first cylindrical groove (12), a third annular toothed structure (30) which is connected with the first annular toothed structure (17) and the second annular toothed structure (28) in a matched mode is arranged on the outer side wall of the cylindrical rotating block (29), and a third axial hole (32) corresponding to the second axial hole (24) is formed in the center position of the cylindrical rotating block (29);

The rotary shaft (33) sequentially penetrates through the first shaft hole (13), the first cylindrical groove (12), the third shaft hole (32), the second cylindrical groove (20) and the second shaft hole (24), riveting heads (34) are arranged at two ends of the rotary shaft, a spring (35) is sleeved outside the rotary shaft (33), and two ends of the spring (35) respectively prop against the groove bottom of the first cylindrical groove (12) and the cylindrical rotary block (29);

One side of the button (36) close to the fixed plate (22) is fixed with at least two pressing rods (37), the pressing rods (37) and the outer side walls of the button (36) are attached to the large through groove (21), one end of the pressing rods (37) deviating from the button (36) penetrates through the large through groove (21) and is located in the small through groove (23), and a clamping plate (38) clamped at the bottom of the second cylindrical groove (20) is fixed.

2. A folding ladder with handrails according to claim 1, characterized in that: a first annular space (16) is reserved between the first annular plate (15) and the groove wall of the first cylindrical groove (12), a second annular space (26) is reserved between the second annular plate (25) and the groove wall of the second cylindrical groove (20), and a plurality of sliding rods (27) which are used for being inserted into the first annular space (16) and sliding along the first annular space (16) are fixed in the second annular space (26).

3. A folding ladder with handrails according to claim 1, characterized in that: a sinking groove (39) into which the riveting head (34) can be inserted is formed in one side, close to the fixed plate (22), of the button (36).

4. A folding ladder with handrails according to claim 1, characterized in that: the pipe sleeve (14) corresponding to the first shaft hole (13) is fixed at the center of the bottom of the first cylindrical groove (12), a containing groove (31) allowing the pipe sleeve (14) to penetrate is formed in the center of one side, away from the fixed plate (22), of the cylindrical rotating block (29), and the third shaft hole (32) is formed in the center of the bottom of the containing groove (31).

5. A folding ladder with handrails according to claim 1, characterized in that: the connecting rod (9) is detachably connected with the front foot pipe (4) through bolts.