Stair climbing trolley suitable for steel structure stairs

Abstract

The utility model discloses a stair climbing trolley suitable for steel structure stairs, which belongs to the technical field of stair climbing trolleys and comprises a frame body, a main rotating shaft is arranged at the bottom of the frame body, and wheel components are rotatably arranged at two ends of the main rotating shaft respectively. Blocking guide wheels are rotatably arranged at the positions, close to the two wheel sets, of the inner side of the main rotating shaft correspondingly, the portions, located between the two rolling wheels, of the blocking guide wheels abut against the neutral position formed by the steel grating plate and the top edge of the steel grating plate, and the outer rings of the blocking guide wheels abut against the top edge of the steel grating plate. And therefore, the roller can turn over and move upwards at the neutral gear. The stair climbing trolley can be suitable for steel structure stairs, the problem that idler wheels of the stair climbing trolley can be clamped in a neutral position formed by the steel grating plates and the top edges of the steel grating plates is solved, and workers can conveniently carry heavy objects upwards on the steel structure stairs.

Description

Technical Field

[0001] The utility model relates to the technical field of stair climbing trolleys, in particular to a stair climbing trolley suitable for steel structure stairs. Background Art

[0002] At present, the commonly used stair climbing trolleys are mainly used for stairs with cement structures. The flat pedals and 90-degree upright top plates of cement structure stairs are both solid structures cast in cement. When the commonly used stair climbing trolley goes upstairs, the three small wheels on each side rotate and roll on the flat pedals, and rely on the 90-degree upright top plate to block the three small wheels in turn, and climb up the stairs by mutual help. Now most factories and production workshops have steel structure stairs. The flat pedals of steel structure stairs are steel grating plates, without upright top plates, only the top edges of steel grating plates, resulting in gaps between the top edges of steel grating plates, and the rollers on each side of the commonly used stair climbing trolley can rotate and roll on the flat pedals of the steel grating plates when going upstairs, but because there is no upright top plate to block, the rollers of the stair climbing trolley will be stuck in the gap and cannot move, resulting in the stair climbing trolley being unable to climb the stairs and losing its auxiliary carrying function. Utility Model Content

[0003] The main purpose of the utility model is to solve the above-mentioned technical problems to a certain extent, and to propose a stair climbing trolley suitable for steel structure stairs. The utility model can be suitable for steel structure stairs and solves the problem that the rollers of the stair climbing trolley will be stuck in the gap formed by the steel grating plate and the top edge of the steel grating plate, so as to facilitate the staff to carry heavy objects upwards on the steel structure stairs.

[0004] The above-mentioned problem to be solved by the utility model is achieved through the following technical solutions:

[0005] A stair climbing trolley suitable for steel structure stairs is proposed, comprising a frame body, a main rotating shaft is provided at the bottom of the frame body, and wheel assemblies are rotatably provided at both ends of the main rotating shaft;

[0006] The wheel assembly includes a plurality of rollers and a mounting frame, wherein the mounting frame is rotatably mounted on the main rotating shaft, and the plurality of rollers are rotatably distributed in an array on the mounting frame with the main rotating shaft as the axis, and the rollers are rotated in turn with the rotation of the mounting frame to drag the frame body upward to move;

[0007] A blocking guide wheel is rotatably provided on the inner side of the main rotating shaft and close to the two wheel groups, wherein the blocking guide wheel is located in the gap between the two rollers and presses against the gap formed by the steel grating plate and the top edge of the steel grating plate, and the outer ring of the blocking guide wheel abuts against the top edge of the steel grating plate, so that the roller can flip and move upward in the gap.

[0008] In some embodiments, at least three rollers are provided, and they are rotatably disposed on connecting shafts provided on the mounting frame.

[0009] In some embodiments, the diameter of the blocking guide wheel is larger than the diameter of the roller.

[0010] In some embodiments, the diameter of the blocking guide wheel is smaller than the diameter of the outer circle formed by flipping the roller around the main rotating axis.

[0011] In some embodiments, the blocking guide wheel includes a bearing, a bearing box, a rim, a spoke and a tire, the bearing is arranged in the bearing box, the bearing is assembled on the main rotating shaft, the spoke is arranged in the bearing box and extends toward the main rotating shaft, and the extended end thereof is connected to the rim, and the tire is covered on the outer side of the rim.

[0012] The above technical solution provided by this application has the following advantages compared with the prior art:

[0013] The utility model uses rollers to rotate and roll on the flat pedals of the steel grating plate to drag the frame body for walking. When going up the stairs, the blocking guide wheel will lean against the top edge of the steel grating plate, and the part of the blocking guide wheel will bear against the gap formed by the steel grating plate and the top edge of the steel grating plate, so that the rollers will not be stuck in the gap when rotating and rolling on the flat pedals of the steel grating plate. At the same time, with the help of the resistance of the blocking guide wheel leaning against the top edge of the steel grating plate, the rollers flip over and climb up the stairs by leveraging each other, so that it can be suitable for steel structure stairs and solves the problem that the rollers of the stair climbing trolley will be stuck in the gap formed by the top edge of the steel grating plate. The utility model has a simple structure and low cost, which is convenient for staff to carry heavy objects upwards on the steel structure stairs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0015] Figure 1 This is a structural diagram of a commonly used stair climbing vehicle in Example 1;

[0016] Figure 2 This is a stair climbing structure diagram of a commonly used stair climbing vehicle in Example 1;

[0017] Figure 3 This is a structural diagram of a stair climbing trolley suitable for steel structure stairs of the utility model;

[0018] Figure 4This is a stair climbing structure diagram of a stair climbing trolley suitable for steel structure stairs of the utility model;

[0019] Figure 5 It is a structural diagram of the blocking guide wheel of the utility model.

[0020] Description of Figure Numbers:

[0021] 1-frame body; 2-main shaft; 3-roller; 4-mounting frame; 5-steel grating plate; 6-top edge of steel grating plate; 7-neutral gear; 8-blocking guide wheel; 801-bearing; 802-bearing box; 803-rim; 804-spoke; 805-tire. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0024] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model. Example 1

[0025] like Figure 1-2As shown, a commonly used stair climbing trolley includes a frame body 1, a main shaft 2 is provided at the bottom of the frame body 1, and wheel assemblies are rotatably provided at both ends of the main shaft 2, wherein the wheel assembly includes a plurality of rollers 3 and a mounting frame 4, and the mounting frame 4 is rotatably mounted on the main shaft 2. When the frame body 1 is dragged on the steel structure stairs, the rollers 3 rotate and roll on the flat pedals of the steel grating plate 5, and when climbing the stairs upwards, due to the absence of an upright top plate to block it, the gap between the two rollers 3 will be stuck in the gap 7 formed by the steel grating plate 5 and the top edge 6 of the steel grating plate, and the steel structure stairs cannot be climbed smoothly. Example 2

[0026] like Figure 3-5 As shown, the utility model proposes a stair climbing trolley suitable for steel structure stairs, including a frame body 1, a main shaft 2 is provided at the bottom of the frame body 1, and wheel assemblies are rotatably provided at both ends of the main shaft 2, wherein the wheel assembly includes a plurality of rollers 3 and a mounting frame 4, the mounting frame 4 is rotatably mounted on the main shaft 2, at least three rollers 3 are provided, and are rotatably provided on a connecting shaft provided on the mounting frame 4, and the rollers 3 are distributed on the mounting frame 4 in an array with the main shaft 2 as the axis.

[0027] Furthermore, blocking guide wheels 8 are rotatably provided on the inner side of the main rotating shaft 2 and near the positions of the two wheel groups. The blocking guide wheel 8 is located in the gap between the two rollers 3 and will press against the gap 7 formed by the steel grating plate 5 and the top edge 6 of the steel grating plate. The blocking guide wheel 8 includes a bearing 801, a bearing box 802, a rim 803, a spoke 804 and a tire 805. The bearing 801 is arranged in the bearing box 802, and the bearing 801 is assembled on the main rotating shaft 2 to facilitate the blocking guide wheel 8 to rotate on the main rotating shaft 2. The spoke 804 is arranged in the bearing box 802 and extends toward, and its extended end is connected to the rim 803, and the tire 805 is covered on the outer side of the rim 803.

[0028] In this embodiment, the roller 3 is rotated and rolled on the flat pedal of the steel grating plate 5 to drag the frame body 1 to walk, wherein the diameter of the blocking guide wheel 8 is larger than the diameter of the roller 3, and the diameter of the blocking guide wheel 8 is smaller than the diameter of the outer circle formed by the roller 3 turning around the main shaft 2. Through this structure, when the roller 3 rotates and rolls on the flat pedal of the steel grating plate 5, the blocking guide wheel 8 is lifted off; and when going up stairs, the outer ring of the blocking guide wheel 8 will first lean against the top edge 6 of the steel grating plate, and at the same time, the blocking guide wheel 8 located in the gap between the two rollers 3 will support the steel grating The plate 5 and the top edge 6 of the steel grating plate form a gap 7, so that the roller 3 will not be stuck in the gap 7 when it rotates and rolls on the flat pedal of the steel grating plate 5. At the same time, with the help of the resistance of the blocking guide wheel 8 against the top edge 6 of the steel grating plate, the roller 3 continues to flip over and climb up the stairs by leveraging each other. It can be suitable for steel structure stairs and solves the problem that the roller 3 of the stair climbing trolley will be stuck in the gap 7 formed by the steel grating plate 5 and the top edge 6 of the steel grating plate. It has a simple structure and low cost, so that the staff can carry heavy objects upwards on the steel structure stairs.

[0029] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A stair climbing trolley suitable for steel structure stairs, characterized in that: It comprises a frame body, a main rotating shaft is provided at the bottom of the frame body, and wheel assemblies are rotatably provided at both ends of the main rotating shaft; The wheel assembly includes a plurality of rollers and a mounting frame, wherein the mounting frame is rotatably mounted on the main rotating shaft, and the plurality of rollers are rotatably distributed in an array on the mounting frame with the main rotating shaft as the axis, and the rollers are rotated in turn with the rotation of the mounting frame to drag the frame body upward to move; A blocking guide wheel is rotatably provided on the inner side of the main rotating shaft and close to the two wheel groups, wherein the blocking guide wheel is located in the gap between the two rollers and presses against the gap formed by the steel grating plate and the top edge of the steel grating plate, and the outer ring of the blocking guide wheel abuts against the top edge of the steel grating plate, so that the roller can flip and move upward in the gap.

2. The stair climbing trolley suitable for steel structure stairs according to claim 1 is characterized in that: At least three rollers are provided and are rotatably arranged on connecting shafts provided on the mounting frame.

3. The stair climbing trolley suitable for steel structure stairs according to claim 1 is characterized in that: The diameter of the blocking guide wheel is greater than the diameter of the roller.

4. The stair climbing trolley suitable for steel structure stairs according to claim 1, characterized in that: The diameter of the blocking guide wheel is smaller than the diameter of the outer circle formed by the roller turning around the main rotating shaft.

5. The stair climbing trolley suitable for steel structure stairs according to claim 1, characterized in that: The blocking guide wheel includes a bearing, a bearing box, a rim, a spoke and a tire. The bearing is arranged in the bearing box, and the bearing is assembled on the main shaft. The spoke is arranged in the bearing box and extends toward the main shaft. The extended end of the spoke is connected to the rim, and the tire is wrapped around the outer side of the rim.

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