Passenger and freight dual-purpose multifunctional engineering ladder stand

Abstract

A passenger and freight dual-purpose multifunctional engineering ladder stand comprises a supporting platform, a plurality of ladder stand units, a bearing platform and a hand-cranking lifting mechanism, the supporting platform comprises an upper platform and a top ladder stand, the upper platform is fixedly connected with the top ladder stand, the upper platform is communicated with a top access of the top ladder stand, and the bearing platform comprises a lower platform and a bottom ladder stand. The lower platform is fixedly connected with the bottom ladder stand, the lower platform is communicated with a bottom access of the bottom ladder stand, the plurality of ladder stand units are arranged between the top ladder stand and the bottom ladder stand, and the ladder stand units and the top ladder stand, the plurality of ladder stand units and the ladder stand unit and the bottom ladder stand are detachably connected through connecting pieces; the hand cranking lifting mechanism is installed on the supporting platform, and a lifting hook of the hand cranking lifting mechanism is arranged at the position where the bearing platform is located. The lifting device is simple in structure and low in cost, people can pass through the lifting device, equipment or materials can be lifted up and down, the safety of constructors is ensured, and meanwhile the construction flexibility is improved.

Description

Technical Field

[0001] The invention relates to the technical field of engineering ladders, in particular to a multifunctional engineering ladder for both passengers and cargo. Background Art

[0002] In the construction of some large and complex foundation pits, there are platforms with large height differences. During the construction process, the platforms with large height differences are generally dug as up and down passages, or traditional engineering ladders are used as up and down passages, or construction elevators are used; if the method of digging steps is adopted, as the project progresses, the steps need to be rebuilt, and the safety of workers moving on steep steps is poor; if traditional engineering ladders are used, the structural integrity is poor, and the contact between the bottom of the ladder and the ground is poor, and the safety is poor; if construction elevators are used, on the one hand, the economic cost is high, and on the other hand, the construction elevators need to lay cables and reserve sufficient space; and for the first two cases, since there is no additional lifting equipment, workers need to carry equipment, materials and other heavy objects up and down when moving up and down. Workers carrying heavy objects to climb, on the one hand, are prone to causing the equipment or materials they carry to fall, and on the other hand, affect the workers' physical strength, thereby affecting the workers' life safety. Summary of the invention

[0003] The invention solves the deficiencies of the prior art and provides a multifunctional engineering ladder for both passengers and cargo, which can be used for people to pass through and for lifting equipment or materials up and down.

[0004] To achieve the above-mentioned purpose, the present invention first proposes a multifunctional engineering ladder for both passengers and cargo, comprising a supporting platform, a plurality of ladder units, a bearing platform and a hand-cranked lifting mechanism, wherein the supporting platform comprises an upper platform and a top ladder, the upper platform is fixedly connected to the top ladder, the upper platform is communicated with the top entrance and exit of the top ladder, the bearing platform comprises a lower platform and a bottom ladder, the lower platform is fixedly connected to the bottom ladder, the lower platform is communicated with the bottom entrance and exit of the bottom ladder, a plurality of ladder units are arranged between the top ladder and the bottom ladder, and the ladder unit and the top ladder, the plurality of ladder units, and the ladder unit and the bottom ladder are all detachably connected through connecting pieces; the hand-cranked lifting mechanism is installed on the supporting platform, and the hook of the hand-cranked lifting mechanism is arranged at the position of the bearing platform.

[0005] In this embodiment, the top ladder, the bottom ladder and the ladder unit have the same structure and all include a ladder and a guard cage. The ladder includes two parallel supporting rods and foot pedals arranged perpendicular to the supporting rods. The two supporting rods are connected by a plurality of foot pedals, and the plurality of foot pedals are evenly arranged along the length direction of the supporting rods. The two ends of the guard cage are respectively fixedly connected to the two supporting rods. A passage for workers to pass through is formed between the guard cage and the ladder. After the top ladder, the bottom ladder and the ladder unit are connected, their internal passages are interconnected.

[0006] In this embodiment, the connecting member includes a connecting rod, a slot is provided on the outer side of one end of the support rod, and a block matching the slot is provided on the inner side of the other end. Through holes are provided on the support rod at the positions of the slot and the block correspondingly. The upper and lower adjacent support rods are connected to the block through the slot, and the left and right opposite support rods are connected through a connecting rod at the connection between the slot and the block. Threaded holes are provided at both ends of the connecting rod, and bolts are provided in the through holes, and the upper and lower adjacent support rods and the left and right opposite support rods are connected and fixed by the bolts.

[0007] In this embodiment, upper guardrails are also installed on both sides of the upper platform.

[0008] In this embodiment, a lower guardrail is installed on the lower platform.

[0009] In this embodiment, a plurality of fixing plates are fixed on the side of the support rod, the upper platform and the lower platform facing the pit wall, and the fixing plates are provided with through holes for bolts to pass through.

[0010] In this embodiment, the hand-cranked lifting mechanism includes a pulley mechanism, a wire rope and a manual ratchet winch, the pulley mechanism includes a movable pulley, a guide wheel and a fixed pulley, the manual ratchet winch is fixed on the side of the upper platform away from the top ladder, a top bracket is installed on the top directly above the upper platform, the fixed pulley is installed on the top bracket, the guide wheel is installed above the entrance and exit of the top ladder, in the initial state, the movable pulley is set in the area where the lower platform is located, a hook is installed on the movable pulley, one end of the wire rope is fixed on the side of the top ladder away from the upper platform, and the other end is installed on the manual ratchet winch by passing through the movable pulley, the guide wheel and the fixed pulley in sequence. .

[0011] With the above structure, the present invention has the following advantages:

[0012] 1. This device is connected to the load-bearing platform through a supporting platform and a ladder unit, so that workers can easily reach the load-bearing platform from the supporting platform with the help of the ladder unit, thereby forming a passage for workers to move and construct. At the same time, the hand-cranked lifting mechanism installed on the supporting platform can be used as a transportation channel for equipment and materials, so that equipment, materials and workers can be transported in batches, ensuring the safety of construction workers and improving the flexibility of construction.

[0013] 2. The ladder of the present application is a ladder with a protective cage, thereby protecting the construction workers and preventing them from falling to the greatest extent.

[0014] 3. The support platform, ladder unit and load-bearing platform are detachably connected, making the transportation, installation and disassembly process faster and more convenient.

[0015] In summary, the device has a simple structure and low cost. It can be used for people to pass through and for lifting equipment or materials up and down, ensuring the safety of construction workers while improving the flexibility of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the support platform of the present invention.

[0018] Figure 3 It is a schematic structural diagram of the ladder unit of the present invention.

[0019] Figure 4 It is a structural schematic diagram of the carrying platform of the present invention.

[0020] In the attached drawings: 1. Support platform; 11. Upper platform; 12. Upper guardrail; 13. Top bracket; 14. Top ladder; 2. Ladder unit; 21. Support rod; 22. Guard cage; 23. Foot pedal; 24. Fixed plate; 25. Reinforcement rib; 26. Connecting rod; 3. Load-bearing platform; 31. Lower platform; 32. Lower guardrail; 33. Bottom ladder; 4. Hand-cranked lifting mechanism; 41. Movable pulley; 42. Wire rope; 43. Guide wheel; 44. Fixed pulley; 45. Manual ratchet winch. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. 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 present invention.

[0023] like Figure 1-4 As shown, a multifunctional engineering ladder for both passengers and cargo includes a supporting platform 1, a plurality of ladder units 2, a bearing platform 3 and a hand-cranked lifting mechanism 4;

[0024] like Figure 2As shown, the support platform 1 includes an upper platform 11 and a top ladder 14, the upper platform 11 is vertically installed on the top of the top ladder 14, one end of the upper platform 11 is fixed on the upper platform of the foundation pit, and the other end is fixedly connected to the top ladder 14, upper guardrails 12 are installed on both sides of the upper platform 11, and the upper guardrails 12 on both sides form an aisle on the upper platform 11 that is connected to the top entrance and exit of the top ladder 14; the upper platform 11 is installed with a top bracket 13 at the top of the aisle;

[0025] like Figure 4 As shown, the carrying platform 3 includes a lower platform 31 and a bottom ladder 33. The lower platform 31 is vertically fixed to the bottom of the bottom ladder 33, so that the lower platform 31 is connected to the bottom entrance and exit of the bottom ladder 33. A lower guardrail 32 is installed on the lower platform 31. The lower guardrail 32 is a U-shaped guardrail. The bottom of the lower platform 31 is connected to the bottom ladder 33 through a triangular support frame, thereby enhancing the supporting effect.

[0026] like Figure 1 , 3 As shown, multiple ladder units 2 are arranged between the top ladder 14 and the bottom ladder 33. The number of ladder units 2 is determined according to the construction position to ensure that the bearing platform 3 is in the construction position. The top ladder 14, the bottom ladder 33 and the ladder unit 2 have the same structure and include a ladder and a cage. The ladder includes two parallel support rods 21 and footrests 23 arranged perpendicular to the support rods 21. The two support rods 21 are connected by multiple footrests 23. The multiple footrests 23 are evenly arranged along the length direction of the support rods 21. The two ends of the cage 22 are respectively fixedly connected to the two support rods 21. A passage for workers to pass through is formed between the cage 22 and the ladder. Vertical reinforcing ribs 25 are also installed on the outside of the cage 22. The strength of the cage 22 is strengthened by the reinforcing ribs 25. After the top ladder 14, the bottom ladder 33 and the ladder unit 2 are connected, their internal passages are interconnected.

[0027] The ladder unit 2 and the top ladder 14, the multiple ladder units 2, and the ladder unit 2 and the bottom ladder 33 are all detachably connected via connecting pieces; the connecting pieces include a connecting rod 26, a slot is provided on the outer side of the top end of the support rod 21, and a block matching the slot is provided on the inner side of the bottom end; through holes are provided on the support rod 21 at the positions of the slot and the block correspondingly; the upper and lower adjacent support rods 21 are spliced ​​with the slot and the block; the left and right opposite support rods 21 are connected at the connection between the slot and the block via a connecting rod 26; threaded holes matching the through holes are provided at both ends of the connecting rod 26, and bolts are provided in the through holes, and the upper and lower adjacent support rods 21 and the left and right opposite support rods 21 are connected and fixed by the bolts.

[0028] Furthermore, a plurality of fixing plates 24 are fixed on the side of the support rod 21, the upper platform 11 and the lower platform 31 facing the pit wall, and the fixing plates 24 are provided with through holes for bolts to pass through. The support platform 1, the plurality of ladder units 2 and the load-bearing platform 3 are connected and fixed to the pit wall via the fixing plates 24.

[0029] like Figure 1 As shown, the hand-cranked lifting mechanism 4 is installed on the supporting platform 1, and the hand-cranked lifting mechanism 4 includes a pulley mechanism, a wire rope 42 and a manual ratchet winch 45. The pulley mechanism includes a movable pulley 41, a guide wheel 43 and a fixed pulley 44. The manual ratchet winch 45 is fixed on the side of the upper platform 11 away from the top ladder 14. A top bracket 13 is installed on the top directly above the upper platform 11. The fixed pulley 44 is installed on the top bracket 13. The guide wheel 43 is installed above the entrance and exit of the top of the top ladder 14. In the initial state, the movable pulley 41 is set in the area where the lower platform 31 is located. A hook is installed on the movable pulley 41. One end of the wire rope 42 is fixed on the top of the top ladder 14 away from the upper platform 11, and the other end is installed on the manual ratchet winch 45 by passing through the movable pulley 41, the guide wheel 43 and the fixed pulley 44 in sequence. The manual ratchet winch 45 includes a ratchet, a capstan and a hand crank. The hand crank is the main way to provide external load to the freight pulley system by manpower. The capstan is used to store the traction rope, and the ratchet is used to prevent the freight pulley system from slipping suddenly.

[0030] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A multifunctional engineering ladder for both passengers and cargo, characterized by: It includes a supporting platform, a plurality of ladder units, a bearing platform and a hand-cranked lifting mechanism, the supporting platform includes an upper platform and a top ladder, the upper platform is fixedly connected to the top ladder, the upper platform is communicated with the top entrance and exit of the top ladder, the bearing platform includes a lower platform and a bottom ladder, the lower platform is fixedly connected to the bottom ladder, the lower platform is communicated with the bottom entrance and exit of the bottom ladder, a plurality of ladder units are arranged between the top ladder and the bottom ladder, the ladder unit and the top ladder, the plurality of ladder units, and the ladder unit and the bottom ladder are all detachably connected through connectors; the hand-cranked lifting mechanism is installed on the supporting platform, and the hook of the hand-cranked lifting mechanism is arranged at the position of the bearing platform.

2. The multifunctional engineering ladder for both passengers and cargo according to claim 1 is characterized by: The top ladder, the bottom ladder and the ladder unit have the same structure and all include a ladder and a guard cage. The ladder includes two parallel supporting rods and foot pedals arranged perpendicular to the supporting rods. The two supporting rods are connected by a plurality of foot pedals, and the plurality of foot pedals are evenly arranged along the length direction of the supporting rods. The two ends of the guard cage are respectively fixedly connected to the two supporting rods. A passage for workers to pass through is formed between the guard cage and the ladder. After the top ladder, the bottom ladder and the ladder unit are connected, their internal passages are interconnected.

3. The multifunctional engineering ladder for both passengers and cargo according to claim 2 is characterized by: The connecting piece includes a connecting rod, a slot is provided on the outer side of one end of the support rod, and a block matching the slot is provided on the inner side of the other end. Through holes are provided on the support rod at the positions of the slot and the block correspondingly. The upper and lower adjacent support rods are connected to the block through the slot, and the left and right opposite support rods are connected through a connecting rod at the connection between the slot and the block. Threaded holes are provided at both ends of the connecting rod, and bolts are provided in the through holes, and the upper and lower adjacent support rods and the left and right opposite support rods are connected and fixed by the bolts.

4. The multifunctional engineering ladder for both passengers and cargo according to claim 1 is characterized by: Upper guardrails are also installed on both sides of the upper platform.

5. The multifunctional engineering ladder for both passengers and cargo according to claim 1 is characterized by: A lower guardrail is installed on the lower platform.

6. The multifunctional engineering ladder for both passengers and cargo according to claim 1 is characterized by: A plurality of fixing plates are fixed on the side of the support rod, the upper platform and the lower platform facing the pit wall, and the fixing plates are provided with through holes for bolts to pass through.

7. The multifunctional engineering ladder for both passengers and cargo according to any one of claims 1 to 6, characterized in that: The hand-cranked lifting mechanism includes a pulley mechanism, a wire rope and a manual ratchet winch, the pulley mechanism includes a movable pulley, a guide wheel and a fixed pulley, the manual ratchet winch is fixed on the side of the upper platform away from the top ladder, a top bracket is installed on the top directly above the upper platform, the fixed pulley is installed on the top bracket, the guide wheel is installed above the entrance and exit at the top of the top ladder, in the initial state, the movable pulley is arranged in the area where the lower platform is located, a hook is installed on the movable pulley, one end of the wire rope is fixed on the top of the top ladder away from the upper platform, and the other end is installed on the manual ratchet winch by passing through the movable pulley, the guide wheel and the fixed pulley in sequence.

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