Adjusting trigger, telescopic ladder leg and hanging ladder thereof

Abstract

The utility model discloses an adjusting trigger, a telescopic ladder leg and a hanging ladder of the telescopic ladder leg, and the adjusting trigger is provided with a trigger sleeve which is sleeved on a trigger rotating shaft; the outer wall of the trigger sleeve is provided with an operation plate end, a clamping plate end and a connecting vertical plate located between the operation plate end and the clamping plate end. The adjusting trigger is also connected with an elastic sheet; one side of the elastic piece is fixedly connected with the connecting vertical plate, and the other side of the elastic piece is used for elastically abutting against the wall face so that the adjusting trigger can be located at the initial position.

Description

Technical Field

[0001] The utility model relates to a hanging ladder, in particular to an adjustable trigger, telescopic ladder legs and a hanging ladder thereof. The boarding hanging ladder can be used for loading and unloading goods of trucks and can also be used in other similar occasions. Background Art

[0002] When loading and unloading goods of a vehicle, since there is a certain height between the bottom of the vehicle compartment and the ground, it is often necessary for multiple people to cooperate to successfully load and unload the goods. In order to improve efficiency, some people facilitate climbing by obliquely erecting a ladder or a flat plate. However, since the ladder or the flat plate is obliquely supported on the ground, there are problems of unstable support and easy tipping, and there are potential safety hazards.

[0003] In view of the above problems, a hanging ladder for an automobile came into being. The hanging ladder has a hook which is buckled with the gap between the side plate of the compartment and the surface of the compartment floor, and has a pedal for people to stand on. The existing automobile hanging ladder solves the problem of climbing for loading and unloading goods. The setting of the hook ensures the reliability of the connection between the hanging ladder and the vehicle. The pedal of the hanging ladder is either fixed and non-adjustable, inconvenient to store, or time-consuming and laborious to unlock and adjust, and is inconvenient to use.

[0004] To solve this problem, the publication number CN105781403A discloses a hanging ladder with a foldable pedal. However, the hanging ladder adopts single-sided elastic locking, and the locking structure has low strength, and is prone to locking failure after long-term use. Moreover, the hanging ladder uses the hypotenuse to guide the locking pin to retract, and there is contact and oblique movement friction between the hypotenuse and the handle connecting rod, which is time-consuming and laborious, difficult to operate, and a similar "cutting" friction is generated between the two, generating noise during use, and also affecting the use experience.

[0005] In addition, the heights of different vehicle models are different. The existing hanging ladders need to meet the height requirements of different vehicle models, and thus usually need to face the scenario of lengthening. However, the current lengthening of the hanging ladder main body adopts manual plug-in lengthening, which is very inconvenient. Summary of the Utility Model

[0006] In view of the above deficiencies, another object of the utility model is to provide an adjustable folding boarding hanging ladder that can facilitate the lengthening of the hanging ladder main body.

[0007] To achieve the above at least one object, the utility model adopts the following technical solutions:

[0008] An adjustable trigger, comprising: the adjustable trigger has a trigger sleeve for sleeving on a trigger rotating shaft; an operation plate end, a clamping plate end are arranged on the outer wall of the trigger sleeve, and a connecting vertical plate is located between the operation plate end and the clamping plate end; the adjustable trigger is further connected with an elastic sheet; one side of the elastic sheet is fixedly connected with the connecting vertical plate, and the other side is used for elastically abuting against a wall surface so that the adjustable trigger is in an initial position.

[0009] Preferably, the elastic sheet includes an opposite elastic piece and a connecting piece; wherein, the connecting piece is connected to the surface of the connecting vertical plate facing away from the operation plate end.

[0010] Preferably, the clamping plate end of the adjustable trigger has opposite slopes and a blocking plane, wherein the slope is located on the upper surface of the clamping plate end, and the blocking plane is located on the back surface of the clamping plate end.

[0011] Preferably, the connecting vertical plate is further provided with a top abutting convex rod; the top abutting convex rod extends towards the side away from the operation plate end; preferably, the top abutting convex rod protrudes towards the elastic piece.

[0012] Preferably, the connecting piece is fixedly connected with the connecting vertical plate through a connecting bolt; the connecting bolt provides the top abutting convex rod; adjusting sleeves are further installed on both axial sides of the trigger sleeve of the trigger rotating shaft.

[0013] A telescopic ladder leg, comprising: a main ladder rod, an adjusting leg rod slidably sleeved on the main ladder rod, and a telescopic adjusting mechanism; the telescopic adjusting mechanism can be operatively switched from an initial position to a release position; a plurality of positioning parts are arranged on the inner side wall of the adjusting leg rod along its length direction.

[0014] The telescopic adjusting mechanism includes the adjustable trigger as described above rotatably arranged at the lower end of the main ladder rod; the adjustable trigger can rotate around a trigger rotating shaft, and thus is switched between a release position and an initial position.

[0015] When the telescopic adjusting mechanism is in the initial position, it allows the adjusting leg rod to move downward and prohibits the adjusting leg rod from moving upward; when the telescopic adjusting mechanism is in the release position, it allows the adjusting leg rod to move upward; when the adjustable trigger is in the initial position, the clamping plate end is clamped into the positioning part; the clamping plate end realizes the adjustment of different elongation amounts of the adjusting leg rod by being clamped into different positioning parts.

[0016] Preferably, the adjusting leg rod is slidably sleeved in the main ladder rod; the telescopic ladder leg is further provided with a second elastic member connecting the adjusting leg rod; the second elastic member applies an elastic force to the adjusting leg rod to make it move upward; the adjusting leg rod has a shortest length position and a maximum length position; when the adjusting leg rod is in the shortest length position, the elastic force applied by the second elastic member to the adjusting leg rod is greater than its gravity.

[0017] Preferably, a blocking portion is provided on the side wall of the main ladder rod; when the clamping plate end is inserted into the positioning portion, the blocking portion is located above the clamping plate end to block the clamping plate end.

[0018] A through hole is provided on the side wall of the main ladder rod; the blocking portion is the upper hole wall of the through hole; the clamping plate end is inserted into the positioning portion through the through hole; when the adjusting trigger is in the initial position, its clamping plate end contacts the blocking portion under the action of the first elastic member and is blocked by the blocking portion, and the adjusting leg rod is pulled upward under the action of the second elastic member so that the positioning portion contacts and blocks the clamping plate end; a pedal is provided at the lower end of the adjusting leg rod.

[0019] Preferably, a guiding folding plate is further provided at the lower end of the main ladder rod; guiding long grooves extending along the length direction are provided on the front and rear side walls of the adjusting leg rod; the guiding folding plate has guiding protrusions embedded in the guiding long grooves.

[0020] A hanging ladder, comprising:

[0021] A ladder main body having a plurality of parallel steps; the ladder main body includes telescopic ladder legs arranged in parallel and a plurality of steps located between the two telescopic ladder legs; the telescopic ladder legs adopt the telescopic ladder legs as described above.

[0022] A pedal platform rotatably connected to the upper end of the ladder main body;

[0023] Handrail rods connecting both sides of the ladder main body. Beneficial effects

[0024] The present utility model provides a hanging ladder. For truck owners who often transport goods, using a special ladder for climbing can not only improve the efficiency of loading and unloading goods, but also greatly improve the safety of climbing. The adjusting trigger of the present utility model can be applied to the hanging ladder to facilitate the formation of telescopic ladder legs. The ladder main body of the hanging ladder with a corresponding structure is a telescopic structure, and the hanging ladder main body can be lengthened according to actual needs to meet the height requirements of different vehicle types.

[0025] In addition, the adjustable folding boarding hanging ladder can also cooperate with a boarding platform to form a walking platform to meet different usage scenarios.

[0026] Referring to the following description and drawings, specific embodiments of the present utility model are disclosed in detail, indicating the ways in which the principles of the present utility model can be adopted. It should be understood that the embodiments of the present utility model are not limited in scope thereby.

[0027] Features described and / or illustrated for one embodiment can be used in the same or similar way in one or more other embodiments, combined with features in other embodiments, or instead of features in other embodiments.

[0028] It should be emphasized that the term "comprising / including" as used herein refers to the presence of features, whole things, steps or components, but does not exclude the presence or addition of one or more other features, whole things, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 is a schematic structural diagram of an adjustment trigger provided by an embodiment of the present invention;

[0031] Figure 2 is Figure 1 another view of;

[0032] Figure 3 is Figure 1 a schematic structural diagram of the telescopic adjustment mechanism of and its partial enlarged view;

[0033] Figure 4 is Figure 3 an exploded structural diagram of;

[0034] Figure 5 is Figure 3 another structural diagram of the telescopic adjustment mechanism of;

[0035] Figure 6 is Figure 3 a schematic structural diagram of the adjustment trigger and its installation position of;

[0036] Figure 7 is Figure 6 another view of;

[0037] Figure 8 is a three-dimensional structure diagram of a hanging ladder provided by an embodiment of the present invention.

[0038] DESCRIPTION OF REFERENCE NUMERALS:

[0039] 1, ladder main body; 2, pedal platform; 3, handrail; 100, telescopic adjustment mechanism; 101, adjustment trigger; 102, trigger rotating shaft; 103, adjustment sleeve.

[0040] 11. Main ladder rod; 111. Inner side wall; 112. Through hole; 12. Step; 15. Adjustable leg rod; 158. Positioning part; 158a. Block part; 158b. Lower side wall;

[0041] 50. Foot shell assembly; 51. Foot shell; 52. Tread plate;

[0042] 60. Guide folding plate; 61. Guide side wall; 62. Guide protrusion;

[0043] 70. Mounting plate; 72. Connecting rod;

[0044] 150. Trigger sleeve; 151. Operating plate end; 152. Connecting vertical plate; 153. Top abutting convex rod; 154. First elastic member; 155. Clamping plate end; 156. Slope surface. Detailed implementation mode

[0045] In order to enable those skilled in the art of this technology to better understand the technical solutions in this utility model, the following will clearly and completely describe the technical solutions in the embodiments of this utility model with reference to the accompanying drawings in the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all of the embodiments. Based on the embodiments in this utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this utility model.

[0046] It should be noted that when an element is referred to as "being arranged on" another element, it can be directly on the other element or there may also be another intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be another intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this utility model. The terms used in the description of this utility model herein are only for the purpose of describing specific implementation manners and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0048] As Figures 1 to 8 , an embodiment of this utility model provides a hanging ladder. The adjustable folding boarding hanging ladder includes: a ladder main body 1 having a plurality of parallel steps 12, and a pedal platform 2 that is flip-foldably connected to the upper end of the ladder main body 1. A hook is provided at the front end of the pedal platform 2, and the rear end is connected to the ladder main body 1.

[0049] The ladder main body 1 includes telescopic ladder legs arranged in parallel and a multi-step 12 located between the two telescopic ladder legs. The telescopic ladder legs include a main ladder rod 11, an adjusting leg rod 15 slidably sleeved on the main ladder rod 11, and a telescopic adjusting mechanism 100. The telescopic adjusting mechanism 100 can be operably switched from an initial position to a release position; the telescopic adjusting mechanism 100 is provided with a first elastic member 154 applying an elastic force to reset it to the initial position. When the telescopic adjusting mechanism is in the initial position, it allows the adjusting leg rod 15 to move downward and prohibits the adjusting leg rod 15 from moving upward; when the telescopic adjusting mechanism 100 is in the release position, it allows the adjusting leg rod 15 to move upward. The telescopic ladder leg is further provided with a second elastic member connecting the adjusting leg rod 15; the second elastic member applies an elastic force to the adjusting leg rod 15 to make it move upward.

[0050] It should be noted that the front, rear, left, right, upper, and lower orientations of the present utility model are based on the orientation in the normal use state of the hanging ladder. For example, the end of the pedal platform 2 where the hook is located is the front end, and correspondingly, the end of the pedal platform 2 connecting the ladder main body 1 is the rear end 21; the left and right directions are based on the left and right directions when the user climbs the ladder, which is also the horizontal direction in this embodiment.

[0051] The telescopic ladder leg is installed at the lower end of the main ladder rod 11. Each of the two telescopic ladder legs is provided with a telescopic adjusting mechanism 100 to independently adjust its length. Among them, the adjusting leg rod 15 is slidably sleeved in the main ladder rod 11; the adjusting leg rod 15 has a shortest length position and a maximum length position; the second elastic member includes a second spring (not shown) located in the main ladder rod 11 and connecting the adjusting leg rod 15. When the adjusting leg rod 15 is in the shortest length position, the elastic force applied by the second elastic member to the adjusting leg rod 15 is greater than its gravity. Thus, when the telescopic adjusting mechanism 100 is in the release position, the adjusting leg rod 15 can automatically retract upward without manual assistance, and only the adjusting leg rod 15 needs to be forced when it needs to be pulled down.

[0052] A plurality of positioning portions 158 are arranged along the length direction on the inner side wall of the adjusting leg rod 15. The positioning portion 158 can be a positioning hole or a positioning groove with a concave structure. The telescopic adjusting mechanism 100 includes an adjusting trigger 101 rotatably arranged at the lower end of the main ladder rod 11; the adjusting trigger 101 can rotate around a trigger rotation shaft 102; the trigger rotation shaft 102 is perpendicular to the step 12 and the main ladder rod 11; the adjusting trigger 101 has a clamping plate end 155, and the clamping plate end 155 is clamped into the positioning portion 158 when the adjusting trigger 101 is in the initial position. The clamping plate end 155 realizes the adjustment of different elongation amounts of the adjusting leg rod 15 by being clamped into different positioning portions 158.

[0053] A retaining portion 158a is provided on the side wall of the main ladder rod 11; when the clamping plate end 155 is inserted into the positioning portion 158, the retaining portion 158a is located above the clamping plate end 155 to stop the clamping plate end 155. Among them, a through hole 112 is provided on the inner side wall 111 of the main ladder rod 11; the clamping plate end 155 is inserted into the positioning portion 158 through the through hole 112; the retaining portion 158a is the upper hole wall of the through hole 112. Specifically, the through hole 112 is a rectangular hole; the positioning portion 158 is a rectangular hole; the retaining portion 158a is a hole wall structure. When the adjusting trigger 101 is in the initial position, its clamping plate end 155 contacts the retaining portion 158a under the action of the first elastic member 154 and is stopped by the retaining portion 158a. Moreover, the adjusting leg rod 15 is lifted upward under the action of the second elastic member. At this time, the lower hole wall of the positioning portion 158 of the rectangular hole contacts the clamping plate end 155 and is stopped by the clamping plate end 155.

[0054] A foot shell assembly 50 is provided at the lower end of the adjusting leg rod 15; the foot shell assembly 50 includes a foot shell 51 fixedly connected to the lower end of the adjusting leg rod 15 and a pedal 52 provided on the foot shell 51. By providing the pedal 52, when the user needs to lengthen and heighten the hanging ladder, the user can step on the pedal 52 with the foot and lift the main ladder rod 11 with the hand to achieve the overall lengthening of the hanging ladder, which is convenient and labor-saving. The pedal 52 is located at the bottom of the foot shell 51 and on the front side wall of the foot shell 51.

[0055] The positioning portion 158 is located on the inner side wall of the adjusting leg rod 15; the telescopic adjusting mechanism 100 is installed inside the main ladder rod 11, and the retaining portion 158a is located inside the main ladder rod 11. The retaining portion 158a and the telescopic adjusting mechanism 100 are located below the lowest step 12.

[0056] A guiding folding plate 60 is further provided at the lower end of the main ladder rod 11. The guiding folding plate 60 has a "C" - shaped structure and is fixedly installed at the lower end of the main ladder rod 11. The front and rear side walls of the adjusting leg rod 15 have guiding long grooves extending along its length direction; the guiding folding plate 60 has guiding protrusions 62 embedded in the guiding long grooves. The guiding protrusions 62 are formed by bending the guiding folding plate 60 and are located on the front and rear guiding side walls 61 of the guiding folding plate 60. Of course, the entire guiding folding plate 60 can be formed by bending. The front and rear guiding protrusions 62 are respectively embedded in the guiding long grooves on the front and rear side walls of the adjusting leg rod 15, which not only positions the position of the adjusting leg rod 15 inside the main ladder rod 11 but also guides the up - and - down telescopic movement of the adjusting leg rod 15, making the length adjustment smoother.

[0057] The main ladder rod 11 is provided with a mounting plate 70 for mounting the adjustment trigger 101. Two mounting plates 70 are fixedly mounted on the front and rear side walls of the main ladder rod 11. The two mounting plates 70 are fixedly connected by a connecting rod 72. The upper end of the mounting plate 70 is also fixedly connected to the lowest step 12. The front and rear ends of the trigger shaft 102 of the adjustment trigger 101 are respectively connected to the front and rear mounting plates 70. In order to facilitate the locking position and the convenient state switching, the card end 155 of the adjustment trigger 101 has opposite slopes and blocking planes; the slope 156 is the upper surface of the card end 155, and the blocking plane is the back. In the initial position, the card end 155 is clamped into the positioning part 158, and the lower side wall 158b of the positioning part 158 ​​contacts the blocking plane and is stopped. When it is necessary to pull down the adjustment leg rod 15, the upper side wall of the positioning part 158 ​​contacts the slope to avoid jamming, and the card end 155 can move downward smoothly and automatically by the slope.

[0058] According to the above description, the adjustment trigger 101 switches between the release position and the initial position by rotating. The adjustment trigger 101 has an operation plate end 151 and a clamping plate end 155 on both sides of the trigger shaft 102. In the initial position, the plate-shaped operation plate end 151 extends horizontally. Figure 6 When unlocking, a counterclockwise force is applied to the adjusting trigger 101 to bend it (it can also be done by pushing the operating plate end 151 upward), and the trigger shaft 102 rotates counterclockwise, and the clamping plate end 155 rotates counterclockwise, and the self-positioning portion 158 escapes and enters the release position, thereby releasing the adjusting leg rod 15, and the adjusting leg rod 15 automatically resets upward under the elastic pulling force of the second elastic member.

[0059] like Figures 3 to 7 As shown, the first elastic member 154 is installed on the adjustment trigger 101 and applies a clockwise elastic force to it, and the elastic force is in the direction away from the inner side wall 111 of the main ladder rod 11, so that the initial position of the clamping plate end 155 contacts the stopper 158a. After the operating plate end 151 loses its force, the adjustment trigger 101 is reset under the action of the first elastic member 154, and it automatically rotates from the release position to the initial position, repositions the adjustment leg and limits its further rise and retraction.

[0060] Among them, the first elastic member 154 is an elastic sheet, which is V-shaped as a whole and is a V-shaped elastic sheet. The adjusting trigger 101 has a trigger sleeve 150 sleeved on the trigger rotating shaft 102, and a clamping plate end 155 and an operating plate end 151 are respectively fixedly connected to both sides of the trigger sleeve 150. The trigger rotating shaft 102 is also provided with adjusting sleeves 103 on both axial sides of the trigger sleeve 150 to adjust the position of the adjusting trigger 101. The trigger sleeve 150 is also provided with a connecting vertical plate 152; the connecting piece on one side of the elastic sheet is fixedly connected to the connecting vertical plate 152, and the elastic sheet on the other side elastically abuts against the inner side wall 111 of the main ladder rod 11. In this way, the first elastic member 154 applies an elastic force to the adjusting trigger 101 to move away from the inner side wall 111 of the main ladder rod 11, so that the adjusting trigger 101 is maintained at the initial position. When the clamping plate end 155 contacts the blocking portion 158a, it is in the initial position. When the clamping plate end 155 moves downward and does not apply a block to the adjusting leg rod 15, it is in the release position. Specifically, in this embodiment, the clamping plate end 155 rotates downward to contact the lower side wall of the through hole 112 and is blocked, and is in the release position.

[0061] Additionally, as a feasible example, as Figure 6 , Figure 7 shown, the connecting vertical plate 152 is provided with a top abutting convex rod 153. When rotating, the top abutting convex rod 153 abuts against the elastic sheet or the main ladder rod 11 and is blocked. At this time, it can also be used as the release position. As Figure 7 shown, the connecting piece on one side of the elastic sheet is fixedly connected to the connecting vertical plate 152 by bolts. The bolts serve as connecting members and provide the top abutting convex rod 153 to achieve the release position.

[0062] It should be understood that the above description is for illustrative purposes and not for limitation. By reading the above description, many embodiments and many applications other than the provided examples will be obvious to those skilled in the art. Therefore, the scope of this teaching should not be determined by the above description, but should be determined by the appended claims and the full scope of the equivalents of these claims. For the sake of comprehensiveness, all articles and references including patent applications and published announcements are incorporated herein by reference. Omitting any aspect of the subject matter disclosed herein in the foregoing claims is not intended to abandon such subject matter, nor should it be considered that the inventor has not considered such subject matter as part of the disclosed utility model subject matter.

Claims

1. An adjustment trigger, characterized in that: include: The adjusting trigger comprises a trigger sleeve for being sleeved on the trigger shaft; the outer wall of the trigger sleeve comprises an operating plate end, a clamping plate end, and a connecting vertical plate located between the operating plate end and the clamping plate end; the adjusting trigger is also connected to an elastic sheet; one side of the elastic sheet is fixedly connected to the connecting vertical plate, and the other side is used to elastically abut against the wall surface to make the adjusting trigger located in the initial position.

2. The adjustment trigger according to claim 1, characterized in that: The elastic sheet includes opposite elastic sheets and a connecting sheet, wherein the connecting sheet is connected to the surface of the connecting vertical plate facing away from the end of the operating plate.

3. The adjustment trigger according to claim 1, characterized in that: The clamping plate end of the adjusting trigger has opposite slope surfaces and a blocking plane, wherein the slope surface is located on the upper surface of the clamping plate end, and the blocking plane is located on the back side of the clamping plate end.

4. The adjustment trigger according to claim 2, characterized in that: The connecting vertical plate is also provided with a top-butting protruding rod; the top-butting protruding rod extends toward a side away from the end of the operating plate.

5. The adjustment trigger according to claim 4, characterized in that: The abutting protruding rod protrudes toward the elastic sheet.

6. The adjustment trigger according to claim 4, characterized in that: The connecting piece is fixedly connected to the connecting vertical plate through connecting bolts; the connecting bolts provide the abutting convex rod; and the trigger shaft is also provided with adjusting sleeves on both axial sides of the trigger sleeve.

7. A telescopic ladder leg, characterized in that: include: A main ladder rod, an adjustable leg rod slidably sleeved with the main ladder rod, and a telescopic adjustment mechanism; The telescopic adjustment mechanism can be manipulated to switch from an initial position to a release position; the inner side wall of the adjustment leg rod is provided with a plurality of positioning portions arranged along its length direction; The telescopic adjustment mechanism comprises an adjustment trigger according to any one of claims 1 to 6, which is rotatably arranged at the lower end of the main ladder rod; the adjustment trigger can rotate around a trigger shaft to switch between a release position and an initial position; When the telescopic adjustment mechanism is located at the initial position, the adjustment leg rod is allowed to move downward and is prohibited from moving upward; when the telescopic adjustment mechanism is located at the release position, the adjustment leg rod is allowed to move upward; when the adjustment trigger is in the initial position, the card plate end is snapped into the positioning part; the card plate end can adjust the different elongation amounts of the adjustment leg rod by snapping into different positioning parts.

8. The telescopic ladder leg according to claim 7, characterized in that: The adjusting leg rod is slidably sleeved in the main ladder rod; the telescopic ladder leg is also provided with a second elastic member connected to the adjusting leg rod; the second elastic member applies an elastic force to the adjusting leg rod to make it move upward; the adjusting leg rod has a shortest length position and a maximum length position; when the adjusting leg rod is at the shortest length position, the elastic force applied by the second elastic member to the adjusting leg rod is greater than its gravity.

9. The telescopic ladder leg according to claim 8, characterized in that: The side wall of the main ladder rod is provided with a stopper; when the end of the clamping plate is clamped into the positioning portion, the stopper is located above the end of the clamping plate to stop the end of the clamping plate; A through hole is provided on the side wall of the main ladder rod; the blocking portion is the upper hole wall of the through hole; the card plate end is inserted into the positioning portion through the through hole; when the adjustment trigger is in the initial position, its card plate end contacts the blocking portion and is stopped by the blocking portion under the action of the first elastic member, and the adjustment leg rod is pulled upward under the action of the second elastic member so that the positioning portion contacts and stops with the card plate end; a pedal is provided at the lower end of the adjustment leg rod.

10. The telescopic ladder leg according to claim 9, characterized in that: The lower end of the main ladder rod is also provided with a guide folding plate; the front and rear side walls of the adjustment leg rod are provided with a guide long groove extending along the length direction thereof; and the guide folding plate is provided with a guide protrusion embedded in the guide long groove.

11. A hanging ladder, characterized in that: include: A ladder body having a plurality of parallel steps; the ladder body comprises telescopic ladder legs arranged in parallel, and a plurality of steps located between the two telescopic ladder legs; the telescopic ladder legs are the telescopic ladder legs as described in any one of claims 7 to 10; Rotating a step platform connected to the upper end of the ladder body; A handrail is connected to both sides of the ladder body.

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