Portable foldable climbing ladder for mounting dustproof net under roadway

Abstract

The utility model relates to the technical field of climbing ladders, in particular to a portable foldable climbing ladder for mounting a dustproof net under a roadway, which comprises a first upright post, a second upright post and cross rods uniformly distributed between the first upright post and the second upright post, and further comprises a plurality of connecting pieces, the cross rod is hinged between the first stand column and the second stand column through a hinge piece. And one end of the bottom limiting mechanism is installed at the bottom of the second stand column, and the other end of the bottom limiting mechanism is detachably installed on the side face of the bottom end of the first stand column. According to the ladder, the foldable design is adopted, so that the ladder can be folded into a small shape when not used, transportation and storage are convenient, and the stability of the ladder when the ladder is unfolded for use is ensured through the design of the bottom limiting mechanism and the top limiting mechanism; the restraint strap on the second stand column in the device can be used for folding the climbing ladder through hook-and-loop fasteners, sudden unfolding of the climbing ladder during transferring of the climbing ladder is avoided, and transferring of a user is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of climbing ladders, especially to a portable foldable climbing ladder for installing dustproof nets in a mine shaft. BACKGROUND

[0002] In a mine shaft operation environment, the installation of dustproof nets is an important link to protect the health of miners and maintain a good working environment. With the increase of mining depth and the continuous expansion of the mine shaft network, the complexity and diversity of the underground space are increasingly prominent. When installing dustproof nets in the mine shaft, a climbing ladder is usually used to assist construction personnel in climbing and installation. Due to the limitations of the shaft mouth and the installation environment in the mine shaft, there are more stringent usage requirements for the climbing ladder.

[0003] According to the search, the Chinese utility model patent with the authorization announcement number CN 221646830 U discloses a foldable climbing ladder, which comprises a first body and a second body that are hingedly connected to each other. The top parts of the first body and the second body are hingedly connected by a hinge. The second body can be flipped over the top part of the first body to increase the climbing height. The top parts of the first body and the second body are both provided with insertion holes. The wall surface of the first body is slidingly connected with an insertion rod. The insertion rod can be inserted into the insertion hole of the second body to limit the relative rotation of the first body and the second body. The first body and the second body can be flipped over to form a herringbone shape, i.e., a herringbone ladder. The first body is a rectangular frame structure. When the first body needs to be used against a wall, the second body is flipped over the top part of the first body. The insertion rod is pushed into the insertion hole in the wall surface of the second body. The first body and the second body remain in a parallel state. Thus, the switching between the herringbone ladder and the overlapping ladder can be realized. The climbing ladder has more functions, is more practical, and is easy to operate.

[0004] The above-mentioned device has at least the following technical defects:

[0005] 1. Although the above-mentioned climbing ladder has a foldable function, the volume is still too large after folding. Since the first body and the second body are symmetrical structures, the width of the ladder body after folding does not decrease. Therefore, it is difficult for the user to send the above-mentioned climbing ladder into the mine shaft if the shaft mouth is small. Moreover, the above-mentioned device still has the technical defect of being inconvenient to carry after folding.

[0006] 2. In the specific use, the underground environment is usually narrow in space and compact in layout. After the climbing ladder is opened, it will occupy a large area, which will face the problem of difficulty in finding a suitable placement position. Due to the influence of the width of the first body and the second body, the user also has difficulty in installation operation after the ladder body is opened. Therefore, the climbing ladder has the technical defects of weak practicality and narrow application range. UTILITY MODEL CONTENTS

[0007] The utility model discloses in view of the prior art's insufficient, provide a portable foldable ladder for roadway underground dust screen installation, effectively solve the technical defects of existing folding higher ladder.

[0008] To solve the above problems, the technical scheme adopted by the utility model is as follows: a portable foldable ladder for roadway underground dust screen installation, comprising a first column, a second column and a cross bar uniformly distributed between the first column and the second column, further comprising a plurality of interface pieces, the cross bar is hinged between the first column and the second column through a hinge piece; a bottom limiting mechanism, one end of the bottom limiting mechanism is installed at the bottom of the second column, the other end of the bottom limiting mechanism is detachably installed on the side surface of the bottom end of the first column, for limiting the bottom of the first column and the second column; a top limiting mechanism, one end of the top limiting mechanism is installed at the top of the second column, the other end of the top limiting mechanism is adapted to the top end of the first column, for limiting the top of the first column and the second column.

[0009] Preferably, the outer surface of the second column away from the first column one end is provided with at least two constraint bands, and the outer surface of the constraint band is provided with a magic tape.

[0010] Preferably, the outer surface of the second column away from the first column one end is provided with at least two pull rings.

[0011] Preferably, the bottom limiting mechanism comprises two second constraint rods hinged to the outer surfaces of the front and rear sides of the bottom end of the second column, the outer surfaces of the front and rear sides of the bottom end of the first column are respectively fixedly connected with limiting rods, and the bottom of the side of the second constraint rod close to the first column is provided with a constraint groove matched with the limiting rod.

[0012] Preferably, the top limiting mechanism comprises a groove opened on one side of the top of the second column, the inner walls of the front and rear sides of the center position of the groove are fixedly connected with protruding plates, the outer surface of the protruding plate is provided with a guide groove, the guide groove is L-shaped, the inner wall of the groove is provided with a first constraint rod, the two sides of the first constraint rod close to the one end of the second column are fixedly connected with guide blocks, the guide blocks are slidingly connected with the inner wall of the guide groove, the top of the first column is provided with a limiting groove, the bottom surface of the limiting groove is an inclined surface, and the bottom surface of the first constraint rod close to the one end of the first column is an inclined surface matched with the limiting groove.

[0013] Preferably, the guide groove is provided with a retention groove matched with the guide block at the one end close to the first column.

[0014] Preferably, the first column, the second column and the cross bar are all metal square tube structures.

[0015] The utility model discloses novel structure, clever idea, simple and convenient operation, and has the following advantages compared with prior art:

[0016] 1、The device is folded by adopting a foldable design, the horizontal rods are connected through the hinge pieces, and the limiting mechanisms at the top and bottom can be released, so that the climbing ladder can be folded into a smaller shape when not in use, conveniently carried in a limited space environment such as a roadway underground, reduces the occupied space, and facilitates transportation and storage.

[0017] 2、The device ensures the stability of the climbing ladder when being unfolded and used through the design of the bottom limiting mechanism and the top limiting mechanism, the cooperation of the limiting rod and the constraint groove at the bottom, and the cooperation of the first constraint rod and the limiting groove at the top, which can effectively prevent the relative displacement of the first column and the second column during use, ensures the stability of the climbing ladder structure, and provides a safe climbing operation environment for the user.

[0018] 3、The constraint belt on the second column in the device can constrain the folded climbing ladder by using magic tape, further avoiding the sudden unfolding of the climbing ladder when the climbing ladder is transferred, facilitating the transfer of the user, and meanwhile, the pull ring can further facilitate the staff to carry the climbing ladder underground, especially in the complex terrain and environment underground, the pull ring provides a convenient gripping position, facilitating the movement and placement of the climbing ladder. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is an unfolded state schematic view of a portable foldable climbing ladder for dust screen installation in a roadway underground of the utility model.

[0020] Figure 2 It is a folded state schematic view of a portable foldable climbing ladder for dust screen installation in a roadway underground of the utility model.

[0021] Figure 3 It is a first column structure schematic view of a portable foldable climbing ladder for dust screen installation in a roadway underground of the utility model.

[0022] Figure 4 It is a second column structure schematic view of a portable foldable climbing ladder for dust screen installation in a roadway underground of the utility model.

[0023] Figure 5 It is an enlarged view of A of a portable foldable climbing ladder for dust screen installation in a roadway underground of the utility model.

[0024] Figure 6 It is an enlarged view of B of a portable foldable climbing ladder for dust screen installation in a roadway underground of the utility model.

[0025] 1-first upright column, 2-second upright column, 3-hinge piece, 4-crossbar, 5-bottom limiting mechanism, 6-top limiting mechanism, 7-pull ring, 8-restraint belt, 9-limiting rod, 10-limiting groove, 11-guide groove, 12-first restraint rod, 13-groove, 14-second restraint rod, 15-restraint groove. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present application, and the technical solutions of the present application are further described in conjunction with the drawings, but the present application is not limited to these embodiments.

[0027] As shown in Figures 1-6 The utility model provides a portable foldable climbing ladder for roadway underground dust screen installation, including first upright column 1, second upright column 2 and the crossbar 4 of uniform distribution between first upright column 1 and second upright column 2, still include multiple interfaces 3, the crossbar 4 is hinged in first upright column 1 and second upright column 2 between through hinge piece 3;Bottom limiting mechanism 5, one end of bottom limiting mechanism 5 is installed at the bottom of second upright column 2, and the other end of bottom limiting mechanism 5 is detachably installed on the side surface of the bottom end of first upright column 1, for realizing the limiting of the bottom of first upright column 1 and second upright column 2;Top limiting mechanism 6, one end of top limiting mechanism 6 is installed at the top of second upright column 2, and the other end of top limiting mechanism 6 is used for adapting with the top end of first upright column 1, for realizing the limiting of the top of first upright column 1 and second upright column 2.

[0028] The outer surface of the end of the second upright column 2 away from the first upright column 1 is provided with at least two restraint belts 8, and the outer surface of the restraint belt 8 is provided with a magic tape.

[0029] The outer surface of the end of the second upright column 2 away from the first upright column 1 is provided with at least two pull rings 7.

[0030] The bottom limiting mechanism 5 includes two second restraint rods 14 hinged to the outer surfaces of the front and rear sides of the bottom end of the second upright column 2, the outer surfaces of the front and rear sides of the bottom end of the first upright column 1 are respectively fixedly connected with limiting rods 9, and the bottom of the side close to the first upright column 1 of the second restraint rod 14 is provided with a restraint groove 15 matched with the limiting rod 9.

[0031] The top limiting mechanism 6 comprises a groove 13 opened on one side of the top of the second upright column 2, the inner walls of the groove 13 at the front and back of the center position are fixedly connected with protruding plates, the outer surfaces of the protruding plates are provided with guide grooves 11, the guide grooves 11 are L-shaped, the inner walls of the groove are provided with first constraint rods 12, the two sides of one end of the first constraint rods 12 close to the second upright column 2 are fixedly connected with guide blocks, the guide blocks are slidingly connected to the inner walls of the guide grooves 11, the top of the first upright column 1 is provided with a limiting groove 10, the bottom surface of the limiting groove 10 is an inclined surface, and the bottom surface of one end of the first constraint rods 11 close to the first upright column 1 is an inclined surface matched with the limiting groove 10.

[0032] The guide groove 11 is provided with a retention groove matched with the guide block at one end close to the first upright column 1.

[0033] The first upright column 1, the second upright column 2 and the cross rod 4 are all metal square tube structures.

[0034] The working principle of the device is as follows: first, rotate the second constraint rod 14 of the bottom limiting mechanism 5 to the direction of the first upright column 1, so that the limiting rod 9 at the bottom end of the first upright column 1 is inserted into the constraint groove 15 at the bottom of the second constraint rod 14, so that the bottom is unfolded and limited, and the relative positions of the first upright column 1 and the second upright column 2 at the bottom are kept fixed, then operate the top limiting mechanism 6 to push the first constraint rod 12, because the guide blocks at one end of the first constraint rod 12 close to the second upright column 2 slide in the guide groove 11 (L-shaped), when the guide blocks slide from one end of the guide groove 11 to the other end, the inclined surface of one end of the first constraint rod 12 close to the first upright column 1 is in contact with the inclined surface of the limiting groove 10 at the top of the first upright column 1, because of the design of the inclined surface, with further pushing, the first constraint rod 12 will be gradually clamped into the limiting groove 10, and the retention groove at one end of the guide groove 11 close to the first upright column 1 can make the guide blocks stop, so as to ensure that the first constraint rod 12 is stably clamped in the limiting groove 10, thereby realizing the limitation of the top of the first upright column 1 and the second upright column 2, and the unfolding of the ladder stand is completed.

[0035] After the complete use, the first constraint rod 12 is withdrawn from the limiting groove 10 at the top of the first upright column 1, so that the guide blocks return to the original position along the guide groove 11, the limitation of the top is released, and at this time the first constraint rod 12 is stored in the groove 13.

[0036] The second constraint rod 14 of the bottom limiting mechanism 5 is separated from the limiting rod 9 at the bottom end of the first upright column 1, so that the first upright column 1 and the second upright column 2 can be relatively folded, the cross rod 4 is also folded, the entire ladder stand is folded for carrying, the first upright column 1 and the second upright column 2 after folding can be constrained by the constraint belt 8, the outer surface of the constraint belt 8 is provided with a magic tape, which can well realize the position limitation of the two upright columns after folding, and the user can lift the folded ladder stand through the pull ring 7, so as to achieve the purpose of transferring the ladder stand.

[0037] The device adopts a foldable design, the horizontal rod 4 is connected through the hinge piece 3, and the limiting mechanism at the top and the bottom can be released, so that the ladder can be folded into a smaller shape when not in use, facilitating carrying in a limited space environment such as a mine, reducing the occupied space, and facilitating transportation and storage.

[0038] The design of the bottom limiting mechanism 5 and the top limiting mechanism 6 ensures the stability of the ladder when it is unfolded and used, the cooperation of the limiting rod 9 and the constraint groove 15 at the bottom, and the cooperation of the first constraint rod 12 and the limiting groove 10 at the top can effectively prevent the relative displacement of the first column 1 and the second column 2 during use, ensure the stability of the ladder structure, and provide a safe climbing working environment for the user.

[0039] The constraint belt 8 on the second column 2 can use magic tape to constrain the folded ladder, further avoid the sudden unfolding of the ladder when transferring the ladder, facilitate the transfer of the user, at the same time, the pull ring 7 can facilitate the staff to carry the ladder underground, especially in the complex terrain and environment underground, the pull ring 7 provides a convenient gripping position, facilitating the movement and placement of the ladder.

[0040] The first column 1, the second column 2 and the horizontal rod 4 all adopt metal square tube structure, this material has high strength and rigidity, can bear a certain weight, ensures that the weight of the staff and related tools can be safely supported when carrying out dust screen installation and other operations in the mine, and the like.

[0041] The specific embodiments described in the present application are only illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways instead, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A portable foldable climbing ladder for installing a dust screen in a roadway underground, comprising a first vertical column (1), a second vertical column (2) and a crossbar (4) evenly distributed between the first vertical column (1) and the second vertical column (2), characterized in that: Also include a plurality of hinged pieces (3), the crossbar (4) is hinged between the first column (1) and the second column (2) by the hinged piece (3); bottom limiting mechanism (5), one end of the bottom limiting mechanism (5) is installed at the bottom of the second column (2), the other end of the bottom limiting mechanism (5) is detachably installed on the side of the bottom end of the first column (1), for realizing the limiting of the bottom of the first column (1) and the second column (2); top limiting mechanism (6), one end of the top limiting mechanism (6) is installed at the top of the second column (2), the other end of the top limiting mechanism (6) is used for adapting to the top end of the first column (1), for realizing the limiting of the top of the first column (1) and the second column (2).

2. A portable, foldable, climbing ladder for installing a dust screen in a mine tunnel as claimed in claim 1, characterized in that: The outer surface of the second column (2) away from the first column (1) one end is provided with at least two constraint bands (8), and the outer surface of the constraint band (8) is provided with a magic tape.

3. A portable, foldable, climbing ladder for installing a dust screen in a mine tunnel according to claim 1, characterized in that: The outer surface of the second column (2) away from the first column (1) one end is provided with at least two pull rings (7).

4. A portable, foldable, climbing ladder for installing a dust screen in a mine tunnel according to claim 1, characterized in that: The bottom limiting mechanism (5) includes two second constraint rods (14) hinged to the outer surfaces of the bottom ends of the second column (2) on the front and back sides, the outer surfaces of the bottom ends of the first column (1) on the front and back sides are respectively fixedly connected with limiting rods (9), and the bottom of the side of the second constraint rod (14) close to the first column (1) is provided with a constraint groove (15) adapted to the limiting rod (9).

5. A portable, foldable, climbing ladder for installing a dust screen in a mine tunnel according to claim 1, characterized in that: The top limiting mechanism (6) includes a groove (13) formed on one side of the top of the second column (2), the inner walls of the front and back sides of the center position of the groove (13) are fixedly connected with protruding plates, the outer surface of the protruding plate is provided with a guide groove (11), the guide groove (11) is L-shaped, the inner wall of the groove is provided with a first constraint rod (12), the two sides of the first constraint rod (12) close to one end of the second column (2) are fixedly connected with guide blocks, the guide blocks are slidingly connected to the inner wall of the guide groove (11), the top of the first column (1) is provided with a limiting groove (10), the bottom surface of the limiting groove (10) is inclined, and the bottom surface of the first constraint rod (12) close to one end of the first column (1) is an inclined surface adapted to the limiting groove (10).

6. A portable, foldable, climbing ladder for installing a dust screen in a mine tunnel as claimed in claim 5, characterised in that: The guide groove (11) close to the first column (1) one end is provided with a retention groove adapted to the guide block.

7. A portable, foldable, climbing ladder for installing a dust screen in a mine tunnel according to any one of claims 1 to 6, characterised in that: The first column (1), the second column (2) and the crossbar (4) are all metal square tube structures.

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