Step ladder with antiskid steps

Abstract

The utility model discloses a step ladder with antiskid steps, and mainly relates to the field of steel structure step ladders. Comprising ladder beams located on the two sides, stepping mechanisms fixed in the extending direction of the ladder beams at equal intervals are arranged between the ladder beams, each stepping mechanism comprises a rectangular pedal, a strip-shaped ladder platform is arranged on the side, close to the ladder beams, of the pedal, and through holes penetrating through the pedal in the vertical direction are distributed in a matrix mode; a cross beam consistent with the length direction of the pedal is formed between every two adjacent rows of through holes, a connecting beam plate is formed between every two adjacent through holes in the same row, an anti-skid pad detachably installed on the connecting beam plate is arranged on the connecting beam plate, protruding teeth extending transversely are arranged on the top face of the anti-skid pad, and tooth grooves are formed between the protruding teeth. The tooth grooves are through grooves, and the two ends of the tooth grooves penetrate through the two sides, adjacent to the through holes, of the non-slip mat correspondingly. The utility model has the beneficial effects that the anti-skid function is enhanced, water and oil accumulation can be prevented, and quick-wear components are convenient to replace.

Description

Technical Field

[0001] The utility model relates to the field of steel structure step ladders, in particular to a step ladder with anti-skid steps. Background Art

[0002] In the factory area, due to the huge size of each storage tank and reactor, it is necessary to equip it with stairs for up and down maintenance and sampling operations, such as spiral stairs around the storage tank, etc., and in loading and unloading operations, in order to facilitate personnel to go up and down, the business must be equipped with platform stairs to facilitate operations. Therefore, in the normal production of the factory area, the cooperation of stairs is required in all aspects, so the safety of the ladder is particularly important under high-frequency trials. Especially when working under humid, oily and other conditions, corresponding measures need to be added. Utility Model Content

[0003] The utility model aims to provide a step ladder with anti-skid steps, which has the function of enhancing anti-skid, can prevent water and oil accumulation, and is convenient for replacing vulnerable components.

[0004] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical solutions:

[0005] A step ladder with anti-skid steps comprises ladder beams on both sides, handrails are fixed on the ladder beams, and step mechanisms are provided between the ladder beams at equal intervals along the extending direction of the ladder beams.

[0006] The stepping mechanism includes a rectangular pedal, both ends of which are fixedly connected to the ladder beam respectively, a strip-shaped step is provided on the side of the pedal that is close to the ladder beam and tilted upward, the pedal matrix is ​​distributed with through holes that penetrate it up and down, the through holes are rectangular holes whose length direction is consistent with the width direction of the pedal, adjacent rows of through holes form a crossbeam that is consistent with the length direction of the pedal, adjacent through holes in the same row form a connecting beam plate, the connecting beam plate is provided with an anti-slip pad that can be detachably mounted thereon, the top surface of the anti-slip pad is provided with transversely extending convex teeth, tooth grooves are formed between the convex teeth, the tooth grooves are through grooves, and the two ends respectively penetrate the two sides of the anti-slip pad adjacent to the through holes.

[0007] The cross section of the convex tooth is wedge-shaped, and the top side of the convex tooth is inclined toward the step, that is, the end surface of the convex tooth close to the step is a vertical surface, and the end surface of the convex tooth away from the step is an inclined surface.

[0008] The anti-skid pad includes a pad body whose size is adapted to the connecting beam plate, the convex teeth are located on the top surface of the pad body, and a slot adapted to the connecting beam plate is provided on the bottom surface of the pad body, the slot is a through slot that penetrates the anti-skid pad along its length direction, and limit blocks are symmetrically provided at both ends of the side edges of the bottom side of the slot wall, and the limit blocks are rectangular, and a fixing frame adapted to its size is provided on the bottom surface of the pedal, and the fixing frame is fixedly connected to the pedal through a connecting piece, and a strip plate is provided on the fixing frame at a position corresponding to the cross beam, and positioning grooves corresponding to the limit blocks are respectively provided on both sides of the top surface of the strip plate, and a positioning groove corresponding to the limit block is also provided on the inner side of the top surface of the fixing frame.

[0009] The fixing frame is an integrally formed plastic part or metal part, and the anti-slip pad is an integrally formed rubber part.

[0010] A baffle bar extending horizontally into the slot is provided on the bottom side of the slot groove wall, the top surface of the baffle bar contacts the two sides of the bottom surface of the connecting beam plate, and baffle frames are respectively provided on the two sides of the strip plate corresponding to the positions of the connecting beam plate, and the baffle frame includes two frame bars arranged in parallel, the top side of the frame bar is located at half the height of the pad body, and the distance between the inner end faces of the frame bar is adapted to the width of the pad body.

[0011] The cross section of the frame bar is L-shaped, and both ends of the top side of the frame bar adopt an arc chamfered structure.

[0012] The through holes are arranged in two rows, the cross beam is arranged in the middle of the pedal, the strip plate is arranged in the middle of the fixing frame, and bolts are passed through and reinforced to fix the strip plate and the cross beam.

[0013] Support ribs are arranged around the bottom surface of the pedal, and the support ribs are metal frames corresponding to the size of the pedal.

[0014] The fixing frame and the strip are respectively provided with mounting holes, and the pedal is also provided with reserved holes at positions corresponding to the mounting holes, and bolts are fitted in the mounting holes.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This step ladder achieves the effects of weight reduction, material saving and drainage through a reasonable structure and shape, avoiding rapid drainage in rainy days, oil pollution, scouring and the like, and has an anti-slip structure on the treads. The anti-slip pads are easy to disassemble and replace. As a vulnerable and consumable component, once the anti-slip function is lost or damaged, it should be replaced separately in a timely manner, saving operation and maintenance costs and maintaining the anti-slip effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the pedal mechanism of the utility model.

[0018] Figure 2It is a schematic diagram of the bottom surface of the pedal mechanism of the utility model.

[0019] Figure 3 It is a top view of the pedal mechanism of the utility model.

[0020] Figure 4 It is a side view of the pedal mechanism of the utility model.

[0021] Figure 5 This utility model Figure 3 AA section view.

[0022] Figure 6 This utility model Figure 3 BB cross-sectional view.

[0023] Figure 7 It is a schematic diagram of component disassembly of the utility model.

[0024] Figure 8 It is a schematic diagram of the cooperation between the fixed frame and the anti-skid pad of the utility model (the pedal is omitted).

[0025] Fig. 9 This utility model Figure 6 Enlarged view of part D.

[0026] Fig.10 It is a schematic diagram of the anti-slip mat of the utility model.

[0027] Numbers shown in the accompanying drawings:

[0028] 1. Pedal; 2. Ladder; 3. Through hole; 4. Support rib; 5. Crossbeam; 6. Connecting beam plate; 7. Reserved hole; 8. Cushion; 9. Slot; 10. Limit block; 11. Stop bar; 12. Fixed frame; 13. Installation hole; 14. Frame bar; 15. Positioning groove; 16. Strip plate; 17. Protruding tooth. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application.

[0030] Based on its usage scenario, the step ladder can be spiral, Z-shaped, straight, etc. It uses steel as the main material, has good load-bearing capacity and strong durability. The width is generally 1.2 meters. If there is a platform, the width at the platform position is 1.3-1.5 meters. Its main structure includes ladder beams, handrails, and stepping mechanisms.

[0031] The ladder beams are two and symmetrically arranged in parallel. Taking a straight ladder as an example, the ladder beams are two inclined metal beams, which serve as the main load-bearing frame of the step ladder. The handrails are fixedly welded to the upper side of the ladder beams and are also made of steel.

[0032] The stepping mechanism is arranged between two ladder beams and is arranged equidistantly to provide treads for climbing.

[0033] The stepping mechanism is the main stepping component, and the improvement measures are mainly carried out on this part of the mechanism.

[0034] The stepping mechanism comprises a pedal 1, an anti-slip pad, a fixing frame 12, and a connecting piece;

[0035] The pedal 1 is a metal plate, and the two ends of the pedal 1 in the length direction are respectively fixed to the inner end surface of the ladder beam on the same side by welding, and the structure of the step ladder is realized by fixing the two ends of the pedal 1 at equal intervals along the extension direction of the ladder beam. The top surface of the pedal 1 is a tread, and the tread is arranged horizontally.

[0036] A strip-shaped step platform 2 is provided on the upwardly inclined side of the pedal 1 close to the ladder beam. The length of the step platform 2 is consistent with that of the pedal 1 and can be processed by welding or sheet metal bending. The inner vertical end surface of the step platform 2 close to the pedal 1 is a riser, which is used to provide a moderate vertical shielding surface to block the toes when going up the stairs.

[0037] Support ribs 4 are provided around the bottom surface of the pedal 1 . The support ribs 4 are metal frames corresponding to the size of the pedal 1 , and can improve the support strength of the overall shape of the pedal 1 .

[0038] The pedal 1 is penetrated by a plurality of through holes 3 from top to bottom. The through holes 3 are long rectangular and are used to reduce weight and consumables. On the basis of ensuring the supporting strength of the pedal 1, the reduction of the weight of each pedal 1 is conducive to installation and use. The through holes 3 also play a greater role in timely drainage and drying. Since the operating environment of the factory is mostly open-air or there are oil stains, if there are oil stains, timely flushing and flushing are required, resulting in a humid environment. In addition, rain and other conditions often cause a large amount of water to accumulate on the surface of the pedal 1. The accumulated water not only causes a weight burden on the entire step ladder, but also promotes the corrosion of the step ladder and accelerates the loss when soaked in rainwater or recycled water in the chemical plant environment. The through holes 3 can facilitate the rapid leakage of water, avoid water accumulation, and quickly drain the tread, which is conducive to keeping it dry. It is not only beneficial to the service life of the step ladder, but also the tread without water accumulation can improve the safety of stepping.

[0039] The through holes 3 are distributed in a rectangular array. Based on this example, the through holes 3 are arranged in two rows, with 9 holes in each row. Based on this distribution structure, a crossbeam 5 consistent with the length direction of the pedal 1 is formed between the two rows of through holes 3, and a connecting beam plate 6 consistent with the width direction of the pedal 1 is formed between the adjacent through holes 3 in the same row. The connecting beam plate 6 is also distributed in a matrix based on the through holes 3 in the matrix. The connecting beam plate 6 constitutes a stepping part, and an anti-skid pad is provided on the connecting beam plate 6. The anti-skid pad adopts an integrally formed rubber injection part, mainly including a pad body 8 adapted to the connecting beam plate 6 and capable of covering the connecting beam plate 6. The upper surface of the pad body 8 is provided with anti-skid strip-shaped convex teeth 17, and tooth grooves are formed between the convex teeth 17. The tooth grooves are through grooves with a length direction consistent with the length direction of the pedal 1. The two ends can divert rainwater downward and will not accumulate in the tooth grooves. The cross-section of the convex tooth 17 is wedge-shaped, and the top side of the convex tooth 17 is inclined toward the step platform 2, that is, the end face of the convex tooth 17 close to the step platform 2 is a vertical surface, and the end face of the convex tooth 17 away from the step platform 2 is an inclined surface. The structure is a non-slip texture that can be bitten and stepped on.

[0040] A slot 9 is provided on the bottom surface of the pad body 8. The slot 9 is a through slot that penetrates the pad body 8 along the length direction of the pedal 1 connecting beam plate 6. The bottom side and both ends are open structures. The slot 9 is movably connected to the connecting beam plate 6. The slot wall of the slot 9 fits tightly with the two sides of the connecting beam plate 6 to cover the connecting beam plate 6.

[0041] The two ends of the bottom side of the slot wall of the slot 9 are symmetrically provided with stop blocks 10 , which are rectangular pads. The stop blocks 10 are arranged along the length direction of the slot 9 towards both ends.

[0042] During installation, the slot 9 can be easily put on the connecting beam plate 6 by slightly deforming it, so that the blocking strip 11 is located on both sides (of the long side) of the bottom surface of the connecting beam plate 6, and the limit block 10 is located at the outer position of both ends of the connecting beam plate 6. After all the connecting beam plates 6 are covered with anti-skid pads, all the anti-skid pads can be fixed by the fixing frame 12.

[0043] The fixing frame 12 is a rectangular frame structure adapted to the pedal 1 , and a strip plate 16 corresponding to the crossbeam 5 is provided in the center of the fixing frame 12 . The strip plate 16 is fixedly connected to both sides of the fixing frame 12 and is an integrally formed plastic part.

[0044] The fixing frame 12 and the strip 16 are respectively provided with mounting holes 13, and the pedal 1 is also provided with reserved holes 7 at positions corresponding to the mounting holes 13. The mounting holes 13 are matched with connecting parts, which are standard parts such as bolts, etc., which can tighten the fixing frame 12 to the bottom surface of the pedal 1.

[0045] Positioning grooves 15 are provided on both sides of the strip 16 corresponding to the position of the limit block 10, and positioning grooves 15 are also provided on the inner side of the fixed frame 12 corresponding to the position of the limit block 10. The positioning grooves 15 are located on the top surfaces of the fixed frame 12 and the strip 16. When the fixed frame 12 is buckled on the bottom surface of the pedal 1, the limit block 10 is pressed and positioned. The depth of the positioning grooves 15 is less than the thickness of the limit block 10, so that the limit block 10 can be tightly pressed by tightening the bolts.

[0046] The two sides of the strip plate 16 are respectively provided with a stop frame corresponding to the position of the connecting beam plate 6, and the stop frame includes two frame strips 14 arranged in parallel, one end of the frame strip 14 is fixed to the strip plate 16, and the other end of the frame strip 14 is fixed to one side of the long side of the fixing frame 12, the frame strip 14 extends vertically upward, the top side of the frame strip 14 is located at half the height of the pad body 8, and the distance between the inner end faces of the frame strip 14 is adapted to the width of the pad body 8, and the pad strip can clamp the pad body 8 on both sides to prevent the pad body 8 from shifting, and further, a stop strip 11 extending horizontally into the groove can be provided on the bottom side of the groove wall of the slot 9, the stop strip 11 is fixed on the notch of the slot 9 and extends relatively, and can overlap with the two sides of the bottom surface of the connecting beam plate 6 in the vertical direction, and under the limitation of the frame strip 14 on both sides of the pad body 8, the pad body 8 cannot be separated from the stop strip 11 and the connecting beam plate 6 upward, and cannot be easily pulled out, so that the pad body 8 and the connecting beam plate 6 are fixed reliably.

[0047] The cross section of the frame strip 14 is L-shaped, and the vertical end face is on the inner side in contact with the pad body 8, which has better supporting performance. The two ends of the top side of the frame strip 14 adopt an arc chamfer structure to avoid stabbing damage to the rubber pad body 8.

[0048] The joint between the frame strip 14 and the cushion body 8 is vertical without platforms and bends, so it is not easy to accumulate oily mud and stains, and is easy to clean.

[0049] Through the above structure, the pedal 1 has a flexible anti-skid structure, and the installation is very convenient. After the slot 9 of the anti-skid pad is downwardly sleeved on the connecting beam plate 6, the fixing frame 12 is uniformly tightened on the bottom surface, and the anti-skid pad can be firmly fixed at the position of the connecting beam plate 6. When people step on it, the convex teeth 17 can greatly increase the anti-skid performance, and the convex teeth 17 and the transverse texture structure of the groove will not accumulate water, and the water can be quickly discharged through the through hole 3. It is also convenient to flush and clean the stepping mechanism, prevent siltation of oil and rainwater, and help keep it dry.

[0050] In addition, this improvement adopts a structure in which the anti-skid pad and the connecting beam plate 6 are independently disassembled, but the fixing is completed in one step by the fixing frame 12, which fully considers the maintenance problem of vulnerable and consumable components. In practical applications, it is very likely that there is local damage to the anti-skid part, or local corrosion (especially in chemical companies) causes the anti-skid function to be no longer available, and timely treatment is required at this time. The existing pedals 1 with rubber cushions are all one-piece structures, not to mention that they are all fixed structures, which are difficult to replace, and once replaced, the entire piece must be replaced, which is very time-consuming and wasteful. However, by designing the anti-skid pad as an independent small pad body 8, it is possible to replace the part that is broken, and local replacement is more economical. At the same time, a one-piece disassembly is adopted in disassembly, and any position can be replaced by disassembling the fixing frame 12, which is very convenient. In terms of fixing method, the traditional adhesive fixing method is easy to debond due to corrosion, immersion, oil pollution and other reasons during use in chemical plants. We use the fixing frame 12 to compress and position, which is convenient for replacement and disassembly, and can remain firm and effective for a long time.

Claims

1. A step ladder with anti-slip steps, comprising ladder beams on both sides, handrails fixed on the ladder beams, stepping mechanisms fixed at equal intervals along the extension direction of the ladder beams, the stepping mechanism comprising rectangular pedals, the two ends of the pedals are respectively fixedly connected to the ladder beams, characterized in that: The pedal is provided with a strip-shaped step platform on the side of the pedal close to the ladder beam that is inclined upward, and the pedal matrix is ​​distributed with through holes that penetrate it from top to bottom, the through holes are rectangular holes with a length direction consistent with the width direction of the pedal, and adjacent rows of through holes form a crossbeam consistent with the length direction of the pedal, and adjacent through holes in the same row form a connecting beam plate, and the connecting beam plate is provided with an anti-slip pad that can be detachably mounted thereon, and the top surface of the anti-slip pad is provided with transversely extending convex teeth, and tooth grooves are formed between the convex teeth, and the tooth grooves are through grooves with two ends respectively penetrating the two sides of the anti-slip pad adjacent to the through holes.

2. A step ladder with anti-slip steps according to claim 1, characterized in that: The cross section of the convex tooth is wedge-shaped, and the top side of the convex tooth is inclined toward the step, that is, the end surface of the convex tooth close to the step is a vertical surface, and the end surface of the convex tooth away from the step is an inclined surface.

3. A step ladder with anti-slip steps according to claim 1, characterized in that: The anti-skid pad includes a pad body whose size is adapted to the connecting beam plate, the convex teeth are located on the top surface of the pad body, and a slot adapted to the connecting beam plate is provided on the bottom surface of the pad body, the slot is a through slot that penetrates the anti-skid pad along its length direction, and limit blocks are symmetrically provided at both ends of the side edges of the bottom side of the slot wall, and the limit blocks are rectangular, and a fixing frame adapted to its size is provided on the bottom surface of the pedal, and the fixing frame is fixedly connected to the pedal through a connecting piece, and a strip plate is provided on the fixing frame at a position corresponding to the cross beam, and positioning grooves corresponding to the limit blocks are respectively provided on both sides of the top surface of the strip plate, and a positioning groove corresponding to the limit block is also provided on the inner side of the top surface of the fixing frame.

4. A step ladder with anti-slip steps according to claim 3, characterized in that: The fixing frame is an integrally formed plastic part or metal part, and the anti-slip pad is an integrally formed rubber part.

5. A step ladder with anti-slip steps according to claim 3, characterized in that: A baffle bar extending horizontally into the slot is provided on the bottom side of the slot groove wall, the top surface of the baffle bar contacts the two sides of the bottom surface of the connecting beam plate, and baffle frames are respectively provided on the two sides of the strip plate corresponding to the positions of the connecting beam plate, and the baffle frame includes two frame bars arranged in parallel, the top side of the frame bar is located at half the height of the pad body, and the distance between the inner end faces of the frame bar is adapted to the width of the pad body.

6. A step ladder with anti-slip steps according to claim 5, characterized in that: The cross section of the frame bar is L-shaped, and both ends of the top side of the frame bar adopt an arc chamfered structure.

7. A step ladder with anti-slip steps according to claim 3, characterized in that: The through holes are arranged in two rows, the cross beam is arranged in the middle of the pedal, the strip plate is arranged in the middle of the fixing frame, and bolts are passed through and reinforced to fix the strip plate and the cross beam.

8. A step ladder with anti-slip steps according to claim 1, characterized in that: Support ribs are arranged around the bottom surface of the pedal, and the support ribs are metal frames corresponding to the size of the pedal.

9. A step ladder with anti-slip steps according to claim 3, characterized in that: The fixing frame and the strip are respectively provided with mounting holes, and the pedal is also provided with reserved holes at positions corresponding to the mounting holes, and bolts are fitted in the mounting holes.

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