Stretchable lifting engineering ladder

Abstract

The utility model relates to a stretching lifting engineering ladder which comprises a frame A and a frame B, the device is characterized in that the frame B is arranged in the frame A, and the frame B can move in the extending direction of the frame A; the first side rod is divided into two groove structures through the partition plate, one groove serves as a guide groove, and the other groove serves as a connecting groove, so that compared with a structure adopting two steel channels, the structure is more stable, and materials are saved; in addition, an L-shaped reinforcing rib plate is arranged between the first pedal and the first side rod, so that the connection between the first pedal and the first side rod is more stable; the bottom end of the anti-skid rubber sleeve is arranged to be inclined, and the anti-skid groove is formed, so that the engineering ladder is ensured to be larger in grounding area, better in anti-skid performance and better in stability in the using process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of elevating ladder, especially to a stretch elevating ladder. BACKGROUND

[0002] The general elevating ladder adopts two frames to support the relatively slidable structure, and the pedal is directly connected with the main frame by rivets in the common elevating ladder as the main frame structure. The single connection mode has great safety risk. In addition, the elevating ladder is simply nested with the anti-skid rubber sleeve at the bottom end during use, and the contact area is small when the inclined elevating ladder contacts with the ground, and the anti-skid performance is poor. UTILITY MODEL CONTENTS

[0003] The utility model solves the technical problem to provide a stretch elevating ladder, and the pedal adopts the mode of being connected with the main frame separately, and the safety risk and the poor anti-skid effect are solved.

[0004] In order to solve the above technical problems, the technical scheme of the utility model is as follows: a stretch elevating ladder, comprising frame A and frame B, wherein the frame B is arranged in the frame A and can move along the extension direction of the frame A.

[0005] The frame A comprises a first side rod and a first pedal, the first side rod has a pair of parallel rods, the first side rod is a groove steel structure with open ends arranged opposite to each other, the first side rod is provided with a partition plate along the vertical direction to divide the open end position of the first side rod into a pedal mounting groove and a guide groove, the first pedal is connected between the two first side rods at equal intervals along the extension direction of the first side rod, the end of the first pedal is embedded in the pedal mounting groove of the first side rod, and the end position of the first pedal is connected to the outer wall of the first side rod by a rivet, a lower fixed pulley is arranged on the first pedal close to the bottom end of the first side rod, and a buckle ring is arranged on the first pedal at the middle position of the first side rod.

[0006] The frame B comprises a second side rod and a second pedal, the second side rod has a pair of parallel rods, the second side rod is a groove steel structure with open ends arranged opposite to each other, and the second side rod is arranged in the guide groove of the first side rod, the second side rod can reciprocate along the extension direction of the guide groove, the second pedal is connected between the two second side rods at equal intervals along the extension direction of the second side rod, and the end of the second pedal is embedded in the slot of the second side rod, an upper fixed pulley is arranged on the second pedal close to the top end of the second side rod, a pull rope is arranged between the upper fixed pulley and the lower fixed pulley, the pull rope drives the frame B to rise, and the two ends of the pull rope are buckled on the buckle ring.

[0007] The second side rod of the frame B is provided with a climbing limiting frame at a position close to the bottom end; the climbing limiting frame comprises a hinged groove and a limiting block; the hinged groove is arranged on the inner side wall of the second side rod close to the bottom end, and the hinged groove is of a channel steel structure with an opening facing the first pedal; the top end of the limiting block is hinged in the hinged groove, and the bottom end of the limiting block is provided with a bayonet hole matched with the first pedal; a torsional spring is arranged at the hinged position of the limiting block and the hinged groove, and the torsional spring drives the limiting block to keep the position of the bayonet hole of the limiting block above the first pedal, thereby avoiding the risk of accidental sliding of the frame B.

[0008] Further, the bottom end of the first side rod is provided with an anti-skid rubber sleeve, the bottom end of the anti-skid rubber sleeve is inclined and provided with a plurality of anti-skid grooves.

[0009] Further, an L-shaped reinforcing rib plate is arranged between the outer wall of the first side rod and the side wall of the first pedal, and the L-shaped reinforcing rib plate is connected to the first pedal outer wall and the first side rod by rivets.

[0010] The utility model discloses the advantages are:

[0011] 1) the utility model discloses the structure that the first side rod is divided into two grooves by the baffle, one is as the guide groove, and one is as the connecting groove, compared with two channel steel structures, is more stable, and material is saved, in addition, the L-shaped reinforcing rib plate is arranged between the first pedal and the first side rod, so that the connection between the first pedal and the first side rod is more stable, the bottom end of the anti-skid rubber sleeve is arranged to be inclined, and the anti-skid groove is set up, guarantee that the engineering ladder is larger in the process of using the ground area, and the anti-skid performance is better, and the stability is better. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be further explained in detail in combination with the drawings and specific embodiment.

[0013] Figure 1 It is a structure schematic diagram of the utility model of a kind of tensile lifting engineering ladder.

[0014] Figure 2 It is a partial enlarged view of the utility model of a kind of tensile lifting engineering ladder. DETAILED DESCRIPTION

[0015] To make the purpose, technical scheme and advantage of the embodiment of the utility model more clear, the technical scheme in the embodiment of the utility model will be clearly and completely described in combination with the drawings in the embodiment of the utility model, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. The components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0017] As shown in Figure 1 Figure 2 A stretchable lifting engineering ladder, comprising a frame A1 and a frame B2; the frame B2 is arranged in the frame A1, and the frame B2 is movable along the extension direction of the frame A1.

[0018] The frame A1 comprises a first side rod 11 and a first pedal 12; the first side rod 11 has a pair of and is parallel to each other, and the first side rod 11 is arranged with openings facing each other in a channel steel structure; the first side rod 11 is provided with a partition plate in the vertical direction to divide the opening position of the first side rod 11 into a pedal mounting groove and a guide groove; the first pedal 12 is connected between two first side rods 11 at equal intervals along the extension direction of the first side rod 11, and the end of the first pedal 12 is embedded in the pedal mounting groove of the first side rod 11, and the end position of the first pedal 12 is connected to the outer wall of the first side rod 11 by a rivet; a lower fixed pulley 13 is arranged on the first pedal 12 close to the bottom end of the first side rod 11; a buckle ring 14 is arranged on the first pedal 12 at the middle position of the first side rod 11.

[0019] The frame B2 comprises a second side rod 21 and a second pedal 22; the second side rod 21 has a pair of and is parallel to each other, and the second side rod 21 is arranged with openings facing each other in a channel steel structure and is arranged in the guide groove of the first side rod 11; the second side rod 21 is reciprocally movable along the extension direction of the guide groove; the second pedal 22 is connected between two second side rods 21 at equal intervals along the extension direction of the second side rod, and the end of the second pedal 22 is embedded in the slot of the second side rod 21; the second pedal 22 close to the top end of the second side rod 21 is provided with an upper fixed pulley 23, and a pull rope is arranged between the upper fixed pulley 23 and the lower fixed pulley 13, which drives the lifting of the frame B2, and the two ends of the pull rope are buckled on the buckle ring 14.

[0020] The second side rod 21 of the frame B2 is provided with a climbing limiting frame 3 at a position close to the bottom end; the climbing limiting frame 3 comprises a hinged groove 31 and a limiting block 32; the hinged groove 31 is arranged on the inner side wall of the second side rod 21 close to the bottom end, and the hinged groove 31 is a channel steel structure with an opening facing the first pedal 12; the top end of the limiting block 32 is hinged in the hinged groove 31, and the bottom end of the limiting block 32 is provided with a bayonet hole matched with the first pedal 12; a torsion spring is arranged at the hinged position of the limiting block 32 and the hinged groove 31, and the torsion spring drives the limiting block to keep the bayonet hole position of the limiting block 32 above the first pedal 22, so as to avoid the risk of accidental sliding of the frame B2.

[0021] The bottom end of the first side rod 11 is provided with an anti-skid rubber sleeve, and the bottom end of the anti-skid rubber sleeve is inclined and provided with a plurality of anti-skid grooves.

[0022] An L-shaped reinforcing rib plate 15 is arranged between the outer wall of the first side rod 11 and the side wall of the first pedal, and the L-shaped reinforcing rib plate 15 is connected to the outer wall of the first pedal 12 and the first side rod 11 by rivets.

[0023] The working principle of the utility model is: by adopting the structure that the first side rod is divided into two grooves by a partition, one is a guide groove and the other is a connecting groove, compared with two channel steel structures, it is more stable and saves materials; in addition, the L-shaped reinforcing rib plate is arranged between the first pedal and the first side rod, so that the connection between the first pedal and the first side rod is more stable; the bottom end of the anti-skid rubber sleeve is arranged in an inclined manner, and the anti-skid grooves are arranged, so that the engineering ladder has larger grounding area, better anti-skid performance and better stability during use.

[0024] Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A stretch-ladder engineering ladder, comprising a frame A, a frame B; characterized in that: The frame B is arranged in the frame A and is movable along the extension direction of the frame A; The frame A comprises first side bars and first steps; the first side bars are arranged in pairs and parallel to each other, and are open-channel steel structures arranged with openings facing each other; the first side bars are provided with partitions along the vertical direction to divide the open positions of the first side bars into step installation grooves and guide grooves; the first steps are connected at equal intervals between the two first side bars along the extension direction of the first side bars, and the end portions of the first steps are embedded in the step installation grooves of the first side bars, and the end portion positions of the first steps are connected to the outer walls of the first side bars by rivets; a lower fixed pulley is arranged on the first step close to the bottom end of the first side bar; a buckle ring is arranged on the first step at the middle position of the first side bar; The frame B comprises second side bars and second steps; the second side bars are arranged in pairs and parallel to each other, and are open-channel steel structures arranged with openings facing each other, and are arranged in the guide grooves of the first side bars; the second side bars are reciprocally movable along the extension direction of the guide grooves; the second steps are connected at equal intervals between the two second side bars along the extension direction of the second side bars, and the end portions of the second steps are embedded in the notches of the second side bars; an upper fixed pulley is arranged on the second step close to the top end of the second side bar, and a pull rope is arranged between the upper fixed pulley and the lower fixed pulley, the pull rope drives the frame B to rise, and the two ends of the pull rope are buckled on the buckle ring; The second side bar of the frame B is provided with a climbing limiting frame at a position close to the bottom end; the climbing limiting frame comprises a hinged groove and a limiting block; the hinged groove is arranged on the inner side wall of the second side bar close to the bottom end, and is an open-channel steel structure with an opening facing the first step; the top end of the limiting block is hinged in the hinged groove, and the bottom end of the limiting block is provided with a bayonet hole matched with the first step; a torsional spring is arranged at the hinged position of the limiting block and the hinged groove, and the torsional spring drives the limiting block to keep the bayonet hole position of the limiting block above the first step, avoiding the risk of accidental sliding of the frame B.

2. A stretch ladder according to claim 1, wherein: The bottom end of the first side bar is provided with an anti-skid rubber sleeve, the bottom end of the anti-skid rubber sleeve is inclined and provided with a plurality of anti-skid grooves.

3. The stretch ladder of claim 1, wherein: L-shaped reinforcing rib plates are arranged between the outer wall of the first side bar and the side wall of the first step, and the L-shaped reinforcing rib plates are connected to the outer wall of the first step and the first side bar by rivets.

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