Protective prefabricated stair transport device

Abstract

The application discloses a protective prefabricated stair conveying device and relates to the technical field of prefabricated component conveying. The application discloses a protective prefabricated stair conveying device and relates to the technical field of prefabricated component conveying. The application discloses a protective prefabricated stair conveying device and relates to the technical field of prefabricated component conveying.

Description

Technical Field

[0001] This invention relates to the field of prefabricated component transportation technology, and in particular to a protective prefabricated staircase transportation device. Background Technology

[0002] In the modern construction industry, prefabricated stairs are widely used as an efficient and economical building component. After being manufactured in the factory, prefabricated stairs need to be transported to the construction site for installation. However, during transportation, prefabricated stairs face various challenges, such as swaying, tilting, and impacts, all of which can damage the stairs and affect their installation quality and safety.

[0003] Traditional prefabricated stair transport devices mostly employ simple fixing methods, such as using ropes or straps to secure the stairs to the transport vehicle. However, this fixing method often suffers from problems such as insecure fixation and easy loosening, failing to effectively prevent the stairs from swaying and tilting during transport. Furthermore, traditional transport devices lack shock absorption measures, failing to effectively reduce vibration and impact during transport, increasing the risk of damage to the stairs.

[0004] To address these issues, the industry has begun exploring safer and more reliable prefabricated stair transport devices. A common improvement is adding restraining structures to the transport device to limit the staircase's swaying range. However, these restraining structures are often simply designed, lacking sufficient stability and flexibility, and are difficult to adapt to prefabricated staircases of different sizes and shapes. Furthermore, these restraining structures are prone to wear and deformation after prolonged use, reducing their service life and reliability.

[0005] How to solve the above-mentioned technical problems is the challenge facing this invention. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a rationally designed, safe, and reliable protective prefabricated staircase transportation device. Through innovative structural design, it aims to ensure the safety and stability of prefabricated stairs during transportation, effectively preventing damage caused by shaking or collisions. This device combines advanced technologies such as stable support, flexible lifting, shock absorption, and precise positioning, achieving comprehensive protection for the prefabricated stairs from loading to transportation and unloading.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a protective prefabricated stair transport device, including two sturdy horizontal seats symmetrically arranged on both sides of the transport vehicle plate, a sturdy limiting component for stabilizing and fixing the sturdy horizontal seat on the transport vehicle plate, and a plurality of lifting brackets evenly arranged on the sturdy horizontal seat along the length direction of the transport vehicle plate, and the lifting brackets on the two sturdy horizontal seats are arranged in a one-to-one correspondence, and a flexible lifting mechanism for lifting the prefabricated stair is arranged between the two lifting brackets arranged in a one-to-one correspondence.

[0008] Limiting bases are provided at both ends of the transport vehicle platform. The limiting bases are provided with stabilizing components for fixing the limiting bases to the transport vehicle platform. The limiting bases are provided with a plurality of limiting mechanisms that cooperate with the flexible lifting mechanism and are used to limit the displacement of the prefabricated stairs. In use, each prefabricated stairs corresponds to at least two flexible lifting mechanisms, and each end of each prefabricated stairs corresponds to at least two limiting mechanisms.

[0009] Furthermore, the lifting bracket includes a connecting U-frame connected to the stable cross seat, a connecting rod that cooperates with the stable cross seat is provided on the connecting U-frame, a plurality of connecting screws that cooperate with the stable cross seat are provided on the connecting U-frame, a stabilizing frame is provided on the connecting U-frame, a lifting bracket that cooperates with the stabilizing frame is provided on the stabilizing frame, and the flexible lifting mechanism is provided on the lifting bracket.

[0010] The lifting bracket is provided with a lifting sleeve for fitting onto the stabilizing frame. The lifting sleeve is provided with a lifting rod that cooperates with the stabilizing frame. The lifting sleeve is provided with a lifting screw that cooperates with the lifting bracket.

[0011] Furthermore, the flexible support mechanism includes a flexible support component disposed between two corresponding lifting brackets and used to support the bottom of the prefabricated staircase. The lifting brackets are provided with a damping and limiting component that cooperates with the flexible support component and is used to limit the left and right swaying of the prefabricated staircase. Between the two corresponding lifting brackets, a damping and corner protection component that cooperates with the flexible support component, is used to limit the front and back swaying of the prefabricated staircase and at the same time prevents the angle of the prefabricated staircase from being damaged.

[0012] The shock-absorbing and limiting component is located between the flexible support component and the shock-absorbing corner protection component.

[0013] Furthermore, the flexible lifting assembly includes a lifting groove formed on the lifting bracket, a lifting slider that slides in the lifting groove, a linear drive that cooperates with the lifting slider on the lifting bracket, and a lifting frame provided on the lifting slider.

[0014] The lifting frame is provided with a lifting shaft, the lifting shaft is provided with a lifting roller, the two ends of the lifting shaft are provided with rotating bearings that rotate with the lifting frame, one end of the lifting shaft is provided with a stabilizing gear, the lifting frame is provided with a ratchet that meshes with the stabilizing gear, the lifting bracket is provided with a stabilizing gear set that meshes with the stabilizing gear, and a drive shaft is coaxially provided with the lifting shaft, a drive disc is provided on the drive shaft, and a drive groove is provided on the drive disc;

[0015] Furthermore, a support cloth for supporting the prefabricated staircase is provided between the two support rollers.

[0016] Preferably, a guide rod is provided in the lifting groove, and the lifting slider has a guide groove that cooperates with the guide rod.

[0017] Furthermore, the shock-absorbing and limiting assembly includes a limiting U-frame that cooperates with the lifting bracket. The limiting U-frame is provided with a limiting rod that cooperates with the lifting bracket. The limiting U-frame is provided with a limiting screw that cooperates with the lifting bracket. The limiting U-frame is provided with a shock-absorbing seat. The shock-absorbing seat is provided with a telescopic pressing member. The telescopic pressing member has a pressing plate at its telescopic end. The side of the precast staircase is provided with an abutment plate that fits against the side of the precast staircase. Several shock-absorbing springs are provided between the pressing plate and the abutment plate.

[0018] The telescopic extrusion component can be configured as a hydraulic telescopic rod or a screw jack device in the shape of a parallelogram.

[0019] Preferably, the limiting U-frame is provided with a first slider that slides in cooperation with the lifting groove, and the first slider is provided with a first guide groove that cooperates with the guide rod.

[0020] Furthermore, the shock-absorbing corner protector assembly includes a corner protector bracket connected to the lifting bracket, a corner protector insert rod connected to the lifting bracket, a corner protector screw connected to the lifting bracket, a horizontal cross seat on the corner protector bracket, a horizontal adjustment groove on the horizontal cross seat, a positioning groove communicating with the horizontal adjustment groove on the horizontal cross seat, a shock-absorbing slider in the horizontal adjustment groove, a positioning screw penetrating the positioning groove on the shock-absorbing slider, and a positioning pad cooperating with the horizontal cross seat on the positioning screw.

[0021] The damping slider is provided with a damping circular frame, and a damping ring frame is coaxially arranged in the damping circular frame. Several damping springs are arranged between the damping circular frame and the damping ring frame. A sleeve is provided on the damping ring frame, and several fastening screws are provided on the sleeve.

[0022] An L-shaped corner guard is provided between the two damping sliders. Corner guard seats are provided at both ends of the corner guard, and connecting rods that connect to the sleeve are provided on the corner guard seats.

[0023] Preferably, the corner bracket is provided with a second slider that slides in cooperation with the lifting groove, and the second slider has a second guide groove that slides in cooperation with the guide rod.

[0024] Furthermore, the limiting mechanism includes a limiting seat fixedly connected to the limiting base, a limiting plate provided on the limiting seat, a fastening rod provided on the limiting plate, a connecting screw connected to the limiting base on the limiting seat, a fixing frame provided on the limiting seat, a movable frame slidably engaged with the fixing frame on the fixing frame, and a positioning rod engaged with the movable frame on the fixing frame;

[0025] A suspension plate is provided at the top of the movable frame, and a triangular stabilizing frame connected to the suspension plate is provided on the movable frame. A shock-absorbing suspension cable assembly is provided on the suspension plate, and a clamping bracket assembly for clamping one end of the prefabricated staircase is provided at the bottom of the shock-absorbing suspension cable assembly.

[0026] Furthermore, the shock-absorbing sling assembly includes a sling frame mounted on the suspension plate, a sling shaft mounted on the sling frame, a winch mounted on the sling shaft, a hinged rope connected to the clamping bracket assembly mounted on the winch, movable bearings that rotatably engage with the sling frame at both ends of the sling shaft, a stabilizing gear mounted at one end of the sling shaft, a stabilizing gear set that meshes with the stabilizing gear mounted on the sling frame, and an adjustment disc mounted at one end of the sling shaft, the adjustment disc having an adjustment groove.

[0027] Furthermore, the clamping bracket assembly includes a clamping base, on which a first clamping plate is disposed. The clamping base has a plurality of adjustable sliding grooves, in which adjustable strips are disposed. A plurality of adjustable strips are connected to the same second clamping plate, and the first clamping plate and the second clamping plate are arranged parallel to each other. The clamping base is provided with a fixed screw that cooperates with the adjustable strips. The clamping base is provided with a hinge seat, on which a connecting rod that cooperates with the hinge seat and is connected to the shock-absorbing sling assembly is disposed.

[0028] Furthermore, the stabilizing and limiting component includes a clamping U-frame that is clamped on the transport vehicle plate. The stabilizing cross seat has several clamping slots that cooperate with the clamping U-frame. The clamping U-frame is provided with several adjusting rods. The adjusting rods are provided with adjusting plates that cooperate with the transport vehicle plate. The clamping U-frame is provided with a first insert. The stabilizing cross seat is provided with a second insert that cooperates with the first insert. The first insert contains a first insert rod that cooperates with the second insert.

[0029] The structure of the stabilizing component can be the same as that of the aforementioned stable limiting component.

[0030] In addition, the stabilizing component may also include stabilizing grooves formed on both sides of the limiting base, a stabilizing plate being provided in the stabilizing groove, and a clamping L-shaped plate with an L-shaped cross-section being provided at the end of the stabilizing plate away from the stabilizing groove, and a stabilizing screw being provided on the clamping L-plate to cooperate with the transport vehicle plate.

[0031] This invention achieves omnidirectional positioning and fixation of prefabricated stairs through an innovative and stable limiting component. The clamping U-frame, first insert, and first rod work together to effectively prevent the stairs from swaying and tilting during transportation, greatly improving safety. This design not only reduces the risk of damage to the stairs due to swaying but also ensures the stability of the stairs during transportation, providing a reliable guarantee for subsequent on-site installation.

[0032] This invention achieves multi-point support and shock absorption protection for prefabricated stairs through the coordinated operation of a stable crossbar, a support bracket, and a flexible support mechanism. This design not only improves stability during transportation but also effectively absorbs and disperses vibration energy, reducing the impact and damage suffered by the prefabricated stairs during transport.

[0033] The combined use of the limiting mechanism and stabilizing limiting components in this invention ensures precise positioning of the prefabricated staircase during transportation. Through precise adjustment of the suspension plate and shock-absorbing cable assembly, the position of the prefabricated staircase can be strictly controlled, facilitating on-site installation.

[0034] The stabilizing horizontal support in this invention serves as the basic support structure of the device. It is securely fixed to the transport vehicle platform via stabilizing limiting components, ensuring the stability and load-bearing capacity of the entire device. The lifting bracket is tightly connected to the stabilizing horizontal support via connecting U-frames, connecting rods, and connecting screws, forming a stable support system. The introduction of the lifting bracket and lifting sleeve allows for flexible adjustment of the lifting height according to the actual dimensions of the prefabricated staircase, enhancing the adaptability and flexibility of the device.

[0035] The flexible support assembly in this invention achieves precise support for the bottom of the prefabricated staircase through the coordinated action of a lifting slider, a linear drive component, and a support bracket. The design of the support rollers and support cloth not only reduces friction with the staircase bottom surface but also improves the stability and comfort of the support. The shock-absorbing and limiting assembly, utilizing structures such as shock-absorbing seats, telescopic compression components, and shock-absorbing springs, effectively absorbs vibrations and impacts during transportation, limiting the lateral swaying of the prefabricated staircase and protecting its structural integrity. The shock-absorbing corner protection assembly, through a combination of corner protection brackets, shock-absorbing sliders, shock-absorbing circular frames, and shock-absorbing ring frames, forms a dual protection against the forward and backward swaying and angle changes of the prefabricated staircase, further enhancing the stability and safety of the device.

[0036] The limiting mechanism in this invention achieves precise limiting and stable fixation of both ends of the prefabricated staircase through the precise design of structures such as the limiting seat, limiting plate, movable frame, and shock-absorbing sling assembly. The introduction of the clamping bracket assembly makes the limiting more secure, effectively preventing displacement and tilting of the staircase during transportation. The stabilizing component is structurally similar to the stable limiting component, but it has been optimized based on the characteristics of the limiting base, ensuring a stable connection between the limiting base and the transport vehicle platform, thus improving the stability and load-bearing capacity of the entire device. Attached Figure Description

[0037] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0038] Figure 2 This is a diagram showing the combination of the stable cross seat and flexible support mechanism under multiple prefabricated staircases of the present invention.

[0039] Figure 3 This is a diagram showing the combination of the stable cross seat and the flexible support mechanism under a single prefabricated staircase according to the present invention.

[0040] Figure 4 This is a schematic diagram of the cooperation between a single prefabricated staircase and a flexible support mechanism according to the present invention;

[0041] Figure 5 This is a schematic diagram showing the cooperation between the stable horizontal seat, the lifting bracket, and the flexible lifting mechanism of the present invention;

[0042] Figure 6 This is a schematic diagram of the cooperation between the lifting bracket and the flexible lifting mechanism of the present invention;

[0043] Figure 7 This is an exploded view of the lifting bracket and flexible lifting mechanism of the present invention;

[0044] Figure 8 This is an exploded view of a portion of the flexible lifting mechanism of the present invention.

[0045] Figure 9This is a diagram showing the coordination of the transport platform and limiting mechanism under the multiple prefabricated stairs of the present invention.

[0046] Figure 10 This is a diagram showing the fit between the limiting base and the limiting mechanism under a single prefabricated staircase according to the present invention.

[0047] Figure 11 This is a diagram showing the fit between a single limiting mechanism and a limiting base according to the present invention;

[0048] Figure 12 This is an enlarged view of the structure of region A in this invention;

[0049] Figure 13 This is a schematic diagram of the clamping bracket assembly of the present invention;

[0050] The attached diagram is labeled as follows: 100, transport vehicle platform; 200, stabilizing crossbar; 210, clamping groove; 300, stabilizing limiting component; 301, clamping U-frame; 302, adjusting rod; 303, adjusting plate; 304, first insert; 305, second insert; 306, first insert rod; 400, lifting bracket; 410, connecting U-frame; 420, connecting insert rod; 430, connecting screw; 440, stabilizing frame; 450, lifting bracket; 451, lifting groove; 460, lifting sleeve; 470, lifting insert rod; 480, lifting screw; 500, flexible support. 510. Lifting mechanism; 511. Flexible lifting assembly; 512. Lifting slider; 513. Lifting bracket; 514. Rotary bearing; 515. Smoothing gear; 516. Smoothing gear set; 517. Drive disc; 518. Drive groove; 519. Lifting cloth; 520. Shock-absorbing and limiting assembly; 521. Limiting U-frame; 522. Limiting rod; 523. Limiting screw; 524. Shock-absorbing seat; 525. Telescopic extrusion component; 526. Extrusion plate; 527. Contact plate; 528. Shock-absorbing spring; 540. Shock-absorbing corner protector assembly; 541. Corner protector. Frame; 542, Corner guard rod; 543, Corner guard screw; 544, Horizontal cross seat; 545, Horizontal adjustment groove; 546, Positioning groove; 547, Vibration damping slider; 548, Positioning screw; 549, Vibration damping round frame; 550, Vibration damping ring frame; 551, Sleeve; 552, Fastening screw; 553, Corner guard plate; 554, Corner guard seat; 555, Connecting rod; 600, Limiting base; 700, Stabilizing component; 800, Limiting mechanism; 810, Limiting seat; 811, Limiting insert plate; 812, Fastening rod; 813, Connecting screw; 814, Fixing frame 815. Movable frame; 816. Positioning rod; 817. Suspension plate; 818. Triangular stabilizing frame; 820. Shock-absorbing sling assembly; 821. Sling frame; 822. Sling shaft; 823. Winch; 824. Hinged rope; 825. Movable bearing; 826. Stabilizing gear; 827. Stabilizing gear set; 828. Control panel; 830. Clamping bracket assembly; 831. Clamping base; 832. First clamping plate; 833. Control groove; 834. Control strip; 835. Second clamping plate; 836. Set screw; 837. Hinge seat; 838. Connecting rod. Detailed Implementation

[0051] See Figures 1 to 13As shown, a protective prefabricated stair transport device includes two sturdy horizontal seats 200 symmetrically arranged on both sides of a transport vehicle 100. The sturdy horizontal seats 200 are provided with sturdy limiting components 300 for sturdyly fixing the sturdy horizontal seats 200 to the transport vehicle 100. The sturdy horizontal seats 200 are evenly provided with a plurality of lifting brackets 400 along the length direction of the transport vehicle 100, and the lifting brackets 400 on the two sturdy horizontal seats 200 are arranged one-to-one. A flexible lifting mechanism 500 for lifting the prefabricated stair is provided between the two lifting brackets 400 arranged one-to-one.

[0052] Both ends of the transport platform 100 are provided with limiting bases 600. The limiting bases 600 are provided with stabilizing components 700 for stably fixing the limiting bases 600 to the transport platform 100. The limiting bases 600 are provided with a plurality of limiting mechanisms 800 that cooperate with the flexible lifting mechanism 500 and are used to limit the displacement of the prefabricated stairs. In use, each prefabricated stair corresponds to at least two flexible lifting mechanisms 500, and each end of each prefabricated stair corresponds to at least two limiting mechanisms 800.

[0053] Specifically, the device includes two symmetrically arranged stable cross seats 200 on both sides of the transport platform 100. These cross seats are fixed to the transport platform 100 by stable limiting components 300 to ensure stability during transportation. Several lifting brackets 400 are evenly arranged along the length of the transport platform 100 on the stable cross seats 200, providing support for the prefabricated stairs. A flexible lifting mechanism 500 is arranged between corresponding pairs of lifting brackets 400. This mechanism is responsible for lifting the prefabricated stairs, allowing for some flexible deformation space during transportation and reducing impact caused by uneven road surfaces. Limiting bases 600 are provided at both ends of the transport platform 100, on which stabilizing components 700 and limiting mechanisms 800 are installed. These mechanisms cooperate with the flexible lifting mechanism 500 to limit the displacement of the prefabricated stairs, ensuring that the stairs do not shift during transportation. Thus, the fixed connection between the stable cross seats 200 and the transport platform 100, and the even distribution of the lifting brackets 400, form a stable support platform. The stabilizing and limiting components 300 and stabilizing components 700 ensure the stability of the entire device during transportation, preventing displacement caused by vehicle bumps. The device ultimately forms a stable support system. In use, each prefabricated staircase is supported by at least two flexible lifting mechanisms 500, and each end of the staircase corresponds to at least two limiting mechanisms 800, ensuring the stability of the staircase during transportation.

[0054] Furthermore, the lifting bracket 400 includes a connecting U-frame 410 connected to the stabilizing crossbeam 200. The connecting U-frame 410 is provided with a connecting rod 420 that cooperates with the stabilizing crossbeam 200. The connecting U-frame 410 is provided with a plurality of connecting screws 430 that cooperate with the stabilizing crossbeam 200. The connecting U-frame 410 is provided with a stabilizing frame 440. The stabilizing frame 440 is provided with a lifting bracket 450 that cooperates with the stabilizing frame 440. The flexible lifting mechanism 500 is provided on the lifting bracket 450.

[0055] The lifting bracket 450 is provided with a lifting sleeve 460 for fitting onto the stabilizing frame 440. The lifting sleeve 460 is provided with a lifting rod 470 that cooperates with the stabilizing frame 440. The lifting sleeve 460 is provided with a lifting screw 480 that cooperates with the lifting bracket 450.

[0056] Specifically, the lifting support 400 consists of a connecting U-frame 410, a lifting support 450, and a stabilizing frame 440. The connecting U-frame 410 is fixed to the stabilizing crossbeam 200 via connecting rods 420 and screws, providing basic support for the entire support and forming a stable support system. The lifting support 450 can move up and down along the stabilizing frame 440 and is locked in position via lifting rods 470 and screws on the lifting sleeve 460. The design of the lifting sleeve 460 and the lifting screws 480 further enhances the stability and accuracy of the lifting function. This structure mainly solves the problem of how to adjust the support point according to the height of different stairs. The design of the lifting support 450 allows the operator to flexibly adjust the support point according to the actual height of the stairs, thereby ensuring that the stairs are lifted smoothly and reducing the risk of damage caused by improper support.

[0057] Furthermore, the flexible support mechanism 500 includes a flexible support component 510 disposed between two corresponding lifting brackets 450 and used to support the bottom of the prefabricated staircase. The lifting brackets 450 are provided with a shock-absorbing and limiting component 520 that cooperates with the flexible support component 510 and is used to limit the left and right swaying of the prefabricated staircase. A shock-absorbing corner protection component 540 that cooperates with the flexible support component 510 and is used to limit the front and back swaying of the prefabricated staircase and at the same time prevent the angle of the prefabricated staircase from being damaged is disposed between the two corresponding lifting brackets 450.

[0058] The shock-absorbing and limiting component 520 is located between the flexible support component 510 and the shock-absorbing corner protection component 540.

[0059] Specifically, the flexible lifting mechanism 500 mainly includes a lifting component, a shock-absorbing and limiting component 520, and a shock-absorbing corner protection component 540. The lifting component uses lifting rollers to support the bottom of the staircase and controls its rising and falling through a linear drive mechanism. The shock-absorbing and limiting component 520 consists of a telescopic compression component 525 and a shock-absorbing spring 528, used to limit the lateral swaying of the staircase. The shock-absorbing corner protection component 540 is used to prevent the staircase from moving forward or backward and to protect the angles of the staircase from deformation. The flexible lifting mechanism 500 provides necessary cushioning against vibrations and impacts during transportation, absorbing external forces and reducing the pressure on the staircase. Furthermore, the multi-point support further improves overall stability.

[0060] In summary, when the support bracket 400 and the flexible support mechanism 500 are combined, they form a complete support system. The support bracket 400 provides rigid support and is height-adjustable, ensuring the staircase is correctly positioned; while the flexible support mechanism 500 adds shock absorption, allowing the staircase to maintain relative stability even under harsh road conditions. This combination not only solves the limitations that may arise from using rigid or flexible supports alone—such as excessive local pressure from rigid materials or insufficient support from soft padding—but also greatly enhances the applicability and safety of the entire system.

[0061] Furthermore, the flexible lifting assembly 510 includes a lifting groove 451 formed on the lifting bracket 450, a lifting slider 511 that slides in the lifting groove 451, a linear drive component that cooperates with the lifting slider 511 on the lifting bracket 450, and a lifting frame 512 provided on the lifting slider 511.

[0062] The lifting frame 512 is provided with a lifting shaft 513, the lifting shaft 513 is provided with a lifting roller, the two ends of the lifting shaft 513 are provided with rotating bearings 514 that rotate with the lifting frame 512, one end of the lifting shaft 513 is provided with a stabilizing gear 515, the lifting frame 512 is provided with a ratchet that meshes with the stabilizing gear 515, the lifting bracket 400 is provided with a stabilizing gear set 516 that meshes with the stabilizing gear 515, and the lifting shaft 513 is coaxially provided with a drive shaft, the drive shaft is provided with a drive disc 517, and the drive disc 517 is provided with a drive groove 518;

[0063] Furthermore, a support cloth 519 for supporting the prefabricated staircase is provided between the two support rollers.

[0064] Preferably, a guide rod is provided in the lifting groove 451, and the lifting slider 511 has a guide groove that cooperates with the guide rod.

[0065] Furthermore, the shock-absorbing and limiting assembly 520 includes a limiting U-frame 521 that cooperates with the lifting bracket 450. The limiting U-frame 521 is provided with a limiting rod 522 that cooperates with the lifting bracket 450. The limiting U-frame 521 is provided with a limiting screw 523 that cooperates with the lifting bracket 450. The limiting U-frame 521 is provided with a shock-absorbing seat 524. The shock-absorbing seat 524 is provided with a telescopic pressing member 525. The telescopic pressing member 525 is provided with a pressing plate 526 at its telescopic end. The side of the precast staircase is provided with an abutment plate 527 that fits against the side of the precast staircase. A plurality of shock-absorbing springs 528 are provided between the pressing plate 526 and the abutment plate 527.

[0066] The telescopic extrusion member 525 can be configured as a hydraulic telescopic rod or a lead screw jack device in the shape of a parallelogram.

[0067] Preferably, the limiting U-frame 521 is provided with a first slider that slides in cooperation with the lifting groove 451, and the first slider is provided with a first guide groove that cooperates with the guide rod.

[0068] Furthermore, the shock-absorbing corner protector assembly 540 includes a corner protector bracket 541 connected to the lifting bracket 450. The corner protector bracket 541 is provided with a corner protector insert rod 542 connected to the lifting bracket 450. The corner protector bracket 541 is provided with a corner protector screw 543 connected to the lifting bracket 450. The corner protector bracket 541 is provided with a horizontal cross seat 544. The horizontal cross seat 544 has a horizontal adjustment groove 545. The horizontal cross seat 544 has a positioning groove 546 communicating with the horizontal adjustment groove 545. A shock-absorbing slider 547 is provided in the horizontal adjustment groove 545. The shock-absorbing slider 547 is provided with a positioning screw 548 that passes through the positioning groove 546. The positioning screw 548 is provided with a positioning pad that cooperates with the horizontal cross seat 544.

[0069] The damping slider 547 is provided with a damping circular frame 549, and a damping ring frame 550 is coaxially arranged in the damping circular frame 549. A plurality of damping springs 528 are arranged between the damping circular frame 549 and the damping ring frame 550. A sleeve 551 is provided on the damping ring frame 550, and a plurality of fastening screws 552 are provided on the sleeve 551.

[0070] An L-shaped corner guard plate 553 is provided between the two damping sliders 547. A corner guard seat 554 is provided at both ends of the corner guard plate 553. A connecting rod 555 connected to the sleeve 551 is provided on the corner guard seat 554.

[0071] Preferably, the corner bracket 541 is provided with a second slider that slides in cooperation with the lifting groove 451, and the second slider has a second guide groove that slides in cooperation with the guide rod.

[0072] Specifically, the flexible support mechanism 500 is the core component of this system, providing a flexible support that can adapt to the shape and size of the prefabricated staircase while reducing impacts and vibrations caused by uneven road surfaces during transportation. Traditional rigid support mechanisms, on the other hand, can damage the prefabricated staircase due to uneven road surfaces. The flexible support mechanism 500, through its flexibility, absorbs and reduces these impacts, thus protecting the staircase from damage. Its design aims to provide stable and shock-absorbing support to ensure the safety of the prefabricated staircase during transportation.

[0073] The flexible support assembly 510 includes a lifting groove 451, a lifting slider 511, and a linear drive, which work together to allow for fine-tuning of the support assembly in the vertical direction to accommodate prefabricated stairs of different heights. Prefabricated stairs may vary in size; the flexible support assembly 510 ensures that the stairs maintain a suitable height during transportation, preventing instability caused by size mismatch. The linear drive controls the movement of the lifting slider 511 within the lifting groove 451, achieving height adjustment of the support roller. This allows the flexible support assembly 510 to adapt to prefabricated stairs of different heights, ensuring the bottom of the stairs is always in the optimal support position. The support roller adjusts the shrinkage of the support cloth 519, which directly contacts and supports the bottom of the prefabricated stairs, providing stable and uniform support. This direct support method reduces the risk of localized pressure on the stairs and prevents damage caused by stress concentration. The combination of a smoothing gear 515 and a ratchet ensures that the support roller will not rotate in the opposite direction due to vibration or impact during transportation. This mechanism ensures that the staircase is fixed in position, preventing displacement or tilting of the staircase due to the reverse rotation of the lifting rollers.

[0074] The shock-absorbing and limiting assembly 520 includes a limiting U-frame 521, a shock-absorbing seat 524, and a telescopic compression member 525. Their function is to provide cushioning when the prefabricated staircase sways laterally, reducing friction and impact. During transportation, the staircase may sway laterally due to vehicle movement; the shock-absorbing and limiting assembly 520 effectively limits this swaying, protecting the edges of the staircase from impact. The limiting plate restricts the horizontal swaying of the prefabricated staircase, ensuring stability. The shock-absorbing spring 528 and the telescopic compression member 525 absorb and disperse vibration energy, reducing the impact on the staircase.

[0075] The shock-absorbing corner protection assembly 540 includes a corner protection bracket 541, a horizontal cross seat 544, a shock-absorbing slider 547, etc. They work together to limit the back-and-forth swaying of the prefabricated stairs and protect the angle of the stairs from damage. During transportation, the prefabricated stairs may move back and forth due to the acceleration or braking of the vehicle. The shock-absorbing corner protection assembly 540 can limit this movement and avoid collisions and angle deformation between stairs.

[0076] Therefore, the flexible support component 510, the shock-absorbing and limiting component 520, and the shock-absorbing corner protection component 540 work together to form a comprehensive protection system. The flexible support component 510 ensures the vertical stability of the staircase; the shock-absorbing and limiting component 520 and the shock-absorbing corner protection component 540 provide protection in the horizontal direction, respectively, limiting the lateral and forward / backward swaying of the staircase. This integrated protection mechanism ensures the safety and integrity of the prefabricated staircase during transportation.

[0077] Furthermore, the limiting mechanism 800 includes a limiting seat 810 fixedly connected to the limiting base 600. The limiting seat 810 is provided with a limiting insert plate 811, the limiting insert plate 811 is provided with a fastening insert rod 812, the limiting seat 810 is provided with a connecting screw 813 connected to the limiting base 600, the limiting seat 810 is provided with a fixing frame 814, the fixing frame 814 is provided with a movable frame 815 that slides with the fixing frame 814, and the fixing frame 814 is provided with a positioning insert rod 816 that cooperates with the movable frame 815.

[0078] A suspension plate 817 is provided at the top of the movable frame 815. A triangular stabilizing frame 818 connected to the suspension plate 817 is provided on the movable frame 815. A shock-absorbing suspension cable assembly 820 is provided on the suspension plate 817. A clamping bracket assembly 830 for clamping one end of the prefabricated staircase is provided at the bottom end of the shock-absorbing suspension cable assembly 820.

[0079] Furthermore, the shock-absorbing sling assembly 820 includes a sling frame 821 mounted on the suspension plate 817, a sling shaft 822 mounted on the sling frame 821, a winch 823 mounted on the sling shaft 822, a hinged rope 824 mounted on the winch 823 and connected to the clamping bracket assembly 830, movable bearings 825 that rotate with the sling frame 821 mounted at both ends of the sling shaft 822, a stabilizing gear 826 mounted at one end of the sling shaft 822, a stabilizing gear set 827 that meshes with the stabilizing gear 826 mounted on the sling frame 821, and an adjusting disc 828 mounted at one end of the sling shaft 822, the adjusting disc 828 having an adjusting groove.

[0080] Furthermore, the clamping bracket assembly 830 includes a clamping base 831, on which a first clamping plate 832 is provided. The clamping base 831 has a plurality of adjustable sliding grooves 833, in which adjustable strips 834 are provided. The plurality of adjustable strips 834 are connected to the same second clamping plate 835, and the first clamping plate 832 and the second clamping plate 835 are arranged parallel to each other. The clamping base 831 is provided with a set screw 836 that cooperates with the adjustable strips 834. The clamping base 831 is provided with a hinge seat 837, on which a connecting rod 838 that cooperates with the hinge seat 837 and is connected to the shock-absorbing sling assembly 820 is provided.

[0081] In summary, during transportation, the movement of the vehicle may cause the stairs to shift or tilt. The function of the limiting mechanism 800 is to restrict the displacement of the prefabricated stairs during transportation, ensuring that the stairs remain in the correct position. The limiting seat 810 is typically installed at both ends of the transport vehicle 100, working in conjunction with the fixed frame 814 and the movable frame 815. It provides a fixed base point for installing other limiting components, ensuring that these components function correctly in their positions. The fixed frame 814 is the main support structure in the limiting mechanism 800. It is securely fixed to the transport vehicle 100 with bolts or other fasteners, providing stable support for the entire limiting mechanism 800 and ensuring that the limiting seat 810 and other components do not loosen or shift during transportation. The movable frame 815 is an adjustable structure that can be connected to the fixed frame 814 via hinges or other connections, allowing operators to adjust the position of the movable frame 815 according to the specific size and shape of the stairs to better adapt to different stair types and improve the limiting effect. The suspension plate 817 is typically a metal plate with hooks or holes, mounted on the movable frame 815. It secures the end of the staircase by suspension, preventing the staircase from moving up and down during transport. The suspension plate 817 can be used in conjunction with the shock-absorbing sling assembly 820 to increase stability.

[0082] During transportation, the stairs may move up and down due to vehicle acceleration or braking. The suspension plate 817 and the shock-absorbing sling assembly 820 can absorb this impact force and reduce damage to the stairs. The shock-absorbing sling assembly 820 includes slings, shock-absorbing springs 528, and other connectors. The slings connect the suspension plate 817 and the end of the stairs, providing vertical support and thus additional suspension support. The shock-absorbing springs 528 are used to absorb vibrations and impacts during transportation, reducing the pressure on the stairs. The clamping bracket assembly 830 includes clamping brackets, fasteners, and gaskets. The clamping brackets directly clamp the side or bottom of the stairs, providing additional fixing points. The clamping force can be adjusted by the fasteners to ensure that the stairs do not shift during transportation.

[0083] Therefore, the limiting seat 810, fixed frame 814, movable frame 815, suspension plate 817, shock-absorbing sling assembly 820, and clamping bracket assembly 830 work together to form a comprehensive limiting system. This system not only restricts the displacement of the staircase during transportation but also provides shock absorption protection, ensuring the safety and integrity of the staircase during transport. Simultaneously, the limiting mechanism 800 and the flexible lifting mechanism 500 together constitute a complete support and protection system. The flexible lifting mechanism 500 provides adjustable-height rigid support to ensure the staircase is correctly positioned; the limiting mechanism 800 provides necessary limiting and buffering in multiple directions to prevent any unnecessary movement of the staircase during transportation.

[0084] Furthermore, the stabilizing and limiting component 300 includes a clamping U-frame 301 clamped on the transport vehicle plate 100. The stabilizing cross seat 200 has a plurality of clamping slots 210 that cooperate with the clamping U-frame 301. The clamping U-frame 301 is provided with a plurality of adjusting rods 302. The adjusting rods 302 are provided with adjusting plates 303 that cooperate with the transport vehicle plate 100. The clamping U-frame 301 is provided with a first insert 304. The stabilizing cross seat 200 is provided with a second insert 305 that cooperates with the first insert 304. The first insert 304 is provided with a first insert rod 306 that cooperates with the second insert 305.

[0085] The structure of the stabilizing component 700 can be the same as that of the aforementioned stabilizing and limiting component 300.

[0086] In addition, the stabilizing component 700 may also include stabilizing grooves formed on both sides of the limiting base 600, a stabilizing plate is provided in the stabilizing groove, and a clamping L-shaped plate with an L-shaped cross-section is provided at the end of the stabilizing plate away from the stabilizing groove, and a stabilizing screw that cooperates with the transport vehicle plate 100 is provided on the clamping L-plate.

[0087] Specifically, the stabilizing and limiting component 300 and the stabilizing component 700 are crucial components of the protective precast staircase transport device. They work together to ensure the precast staircase is securely fixed to the transport vehicle during transport, preventing displacement or sliding and thus ensuring transport safety. The main function of the stabilizing and limiting component 300 is to firmly fix the stabilizing crossbar 200 to the transport platform 100, preventing displacement of the stabilizing crossbar 200 during transport, thereby ensuring the stability of the entire flexible support system and the precast staircase. The main function of the stabilizing component 700 is to firmly fix the limiting base 600 to the transport platform 100, preventing displacement of the limiting base 600 during transport and providing a stable reference point for the limiting mechanism 800. The stabilizing and limiting component 300 and the stabilizing component 700 are respectively fixed to the two sides and two ends of the transport platform 100, forming an integrated fixed frame. The coordinated operation of the stabilizing limit component 300 and the stabilizing component 700 ensures the stability of the entire device during transportation, preventing displacement or overturning caused by bumps.

[0088] In practice, during the loading phase, the stabilizing crossbeams 200 are fixed to the transport platform 100 using the stabilizing limiting components 300, ensuring that the stabilizing crossbeams 200 are evenly distributed along the length of the platform. Subsequently, the height of the lifting bracket 400 is adjusted according to the size and weight of the prefabricated staircase, enabling the flexible lifting mechanism 500 to accurately support the bottom of the staircase. Using the shock-absorbing limiting components 520 and shock-absorbing corner protectors 540, fine adjustments are made according to the shape of the staircase to ensure complete coverage and fixation. Finally, the prefabricated staircase is placed on the lifting mechanism, and the ends of the staircase are precisely limited by the clamping bracket components 830 and the shock-absorbing sling components 820.

[0089] During the transportation phase, the transport vehicle is started, and the stabilizing support system maintains the overall stability of the device. The flexible lifting mechanism 500 absorbs vehicle vibrations, reducing the impact on the stairs. The shock-absorbing limiters and corner protectors work together to limit the swaying of the stairs in three-dimensional space, protecting the structural integrity of the stairs. The precise limiting mechanism 800 ensures that the stairs are fixed in position, preventing displacement or tilting caused by bumps.

[0090] During the unloading phase, upon reaching the destination, first release the clamping mechanism 800, then slowly lower the lifting support 400 to allow the prefabricated staircase to land smoothly. Remove the stabilizing cross seat 200 and its accessories to complete the unloading process.

[0091] The technical features of this invention not described can be implemented by or using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this invention, and this invention is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention should also be within the protection scope of this invention.

Claims

1. A protective prefabricated staircase transport device, characterized in that: The system includes two symmetrically arranged cross seats (200) on both sides of the transport vehicle platform (100). Each cross seat (200) is provided with a stabilizing and limiting component (300) for stably fixing the cross seat (200) to the transport vehicle platform (100). Each cross seat (200) has a plurality of lifting brackets (400) evenly arranged along the length of the transport vehicle platform (100), and the lifting brackets (400) on the two cross seats (200) are arranged one-to-one. The lifting bracket (400) includes a connecting U-frame (410) connected to the stabilizing cross seat (200), a stabilizing frame (440) is provided on the connecting U-frame (410), and a lifting bracket (450) that cooperates with the stabilizing frame (440) is provided on the stabilizing frame (440) to realize the adjustment of the height position of the flexible lifting mechanism (500); Furthermore, a flexible lifting mechanism (500) for supporting the prefabricated staircase is provided between the two corresponding lifting brackets (400). The flexible support mechanism (500) includes a flexible support component (510) disposed between two corresponding lifting brackets (450) and used to support the bottom of the prefabricated staircase. The lifting brackets (450) are provided with a shock-absorbing and limiting component (520) that cooperates with the flexible support component (510) and is used to limit the left and right swaying of the prefabricated staircase. The two corresponding lifting brackets (450) are provided with a shock-absorbing corner protector component (540) that cooperates with the flexible support component (510) to limit the front and back swaying of the prefabricated staircase and at the same time prevent the angle of the prefabricated staircase from being damaged. The flexible lifting assembly (510) includes a lifting groove (451) formed on the lifting bracket (450), a lifting slider (511) slidably engaged with the lifting groove (451), a linear drive component engaged with the lifting slider (511) on the lifting bracket (450), and a lifting frame (512) on the lifting slider (511); a lifting shaft (513) is provided on the lifting frame (512), a lifting roller is provided on the lifting shaft (513), and the two ends of the lifting shaft (513) are provided with a rotating part that rotates with the lifting frame (512). The lifting shaft (513) is equipped with a rotating bearing (514) for dynamic engagement. A smoothing gear (515) is provided at one end of the lifting shaft (513). A ratchet tooth that engages with the smoothing gear (515) is provided on the lifting frame (512). A smoothing gear set (516) that meshes with the smoothing gear (515) is provided on the lifting frame (512). A drive shaft is coaxially provided on the lifting shaft (513). A drive disc (517) is provided on the drive shaft. A drive groove (518) is provided on the drive disc (517). A lifting cloth (519) for supporting the prefabricated staircase is provided between the two lifting rollers. Both ends of the transport vehicle platform (100) are provided with limiting bases (600). The limiting bases (600) are provided with stabilizing components (700) for fixing the limiting bases (600) stably on the transport vehicle platform (100). The limiting bases (600) are provided with a plurality of limiting mechanisms (800) that cooperate with the flexible lifting mechanism (500) and are used to limit the displacement of the prefabricated stairs. In use, each of the prefabricated stairs corresponds to at least two of the flexible support mechanisms (500), and each of the two ends of each prefabricated stairs corresponds to at least two limiting mechanisms (800).

2. The protective prefabricated staircase transport device as described in claim 1, characterized in that: The lifting bracket (400) also includes a connecting rod (420) disposed on the connecting U-frame (410) and cooperating with the stabilizing cross seat (200). The connecting U-frame (410) is provided with a plurality of connecting screws (430) that cooperate with the stabilizing cross seat (200). The lifting bracket (450) is provided with a lifting sleeve (460) for sleeved on the stabilizing frame (440), the lifting sleeve (460) is provided with a lifting rod (470) that cooperates with the stabilizing frame (440), and the lifting sleeve (460) is provided with a lifting screw (480) that cooperates with the lifting bracket (450).

3. The protective prefabricated staircase transportation device as described in claim 1, characterized in that: The shock-absorbing limiting component (520) is located between the flexible lifting component (510) and the shock-absorbing corner protector component (540).

4. The protective prefabricated staircase transport device as described in claim 1, characterized in that: The shock-absorbing and limiting assembly (520) includes a limiting U-frame (521) that cooperates with the lifting bracket (450). The limiting U-frame (521) is provided with a limiting rod (522) that cooperates with the lifting bracket (450). The limiting U-frame (521) is provided with a limiting screw (523) that cooperates with the lifting bracket (450). The limiting U-frame (521) is provided with a shock-absorbing seat (524). The shock-absorbing seat (524) is provided with a telescopic extrusion member (525). The telescopic extrusion member (525) is provided with an extrusion plate (526) at its telescopic end. The side of the precast staircase is provided with an abutment plate (527) that fits against the side of the precast staircase. A plurality of shock-absorbing springs (528) are provided between the extrusion plate (526) and the abutment plate (527) with their two ends respectively connected to the extrusion plate (526) and the abutment plate (527).

5. A protective prefabricated staircase transport device as described in claim 1, characterized in that: The shock-absorbing corner protector assembly (540) includes a corner protector bracket (541) connected to the lifting bracket (450), a corner protector insert rod (542) connected to the lifting bracket (450) on the corner protector bracket (541), a corner protector screw (543) connected to the lifting bracket (450) on the corner protector bracket (541), a horizontal cross seat (544) on the corner protector bracket (541), a horizontal adjustment groove (545) horizontally opened on the horizontal cross seat (544), a positioning groove (546) connected to the horizontal adjustment groove (545) on the horizontal cross seat (544), a shock-absorbing slider (547) provided in the horizontal adjustment groove (545), a positioning screw (548) penetrating the positioning groove (546) provided on the shock-absorbing slider (547), and a positioning pad that cooperates with the horizontal cross seat (544) on the positioning screw (548). The damping slider (547) is provided with a damping circular frame (549), and a damping ring frame (550) is coaxially provided in the damping circular frame (549). A plurality of corner damping springs are provided between the damping circular frame (549) and the damping ring frame (550). A sleeve (551) is provided on the damping ring frame (550), and a plurality of fastening screws (552) are provided on the sleeve (551). An L-shaped corner guard plate (553) is provided between the two damping sliders (547). Corner guard seats (554) are provided at both ends of the corner guard plate (553). A connecting rod (555) connected to the sleeve (551) is provided on the corner guard seat (554).

6. A protective prefabricated staircase transport device as described in claim 1, characterized in that: The limiting mechanism (800) includes a limiting seat (810) fixedly connected to the limiting base (600), a limiting plate (811) provided on the limiting seat (810), a fastening rod (812) provided on the limiting plate (811), a connecting screw (813) connected to the limiting base (600) provided on the limiting seat (810), a fixing frame (814) provided on the limiting seat (814), a movable frame (815) slidably engaged with the fixing frame (814), and a positioning rod (816) engaged with the movable frame (815) provided on the fixing frame (814). The top of the movable frame (815) is provided with a suspension plate (817), and the movable frame (815) is provided with a triangular stabilizing frame (818) connected to the suspension plate (817). The suspension plate (817) is provided with a shock-absorbing suspension cable assembly (820), and the bottom end of the shock-absorbing suspension cable assembly (820) is provided with a clamping bracket assembly (830) for clamping one end of the prefabricated staircase.

7. A protective prefabricated staircase transport device as described in claim 6, characterized in that: The shock-absorbing sling assembly (820) includes a sling frame (821) mounted on the suspension plate (817), a sling shaft (822) mounted on the sling frame (821), a winch (823) mounted on the sling shaft (822), a hinged rope (824) connected to the clamping bracket assembly (830) mounted on the winch (823), movable bearings (825) that rotate with the sling frame (821) mounted at both ends of the sling shaft (822), a stabilizing gear (826) mounted at one end of the sling shaft (822), a stabilizing gear set (827) that meshes with the stabilizing gear (826) mounted on the sling frame (821), and an adjustment disc (828) mounted at one end of the sling shaft (822), with an adjustment groove mounted on the adjustment disc (828).

8. A protective prefabricated staircase transport device as described in claim 6, characterized in that: The clamping bracket assembly (830) includes a clamping base (831), on which a first clamping plate (832) is provided. The clamping base (831) has a plurality of adjustable sliding grooves (833), in which adjustable strips (834) are provided. The plurality of adjustable strips (834) are connected to the same second clamping plate (835). The first clamping plate (832) and the second clamping plate (835) are arranged in parallel. The clamping base (831) is provided with a set screw (836) that cooperates with the adjustable strips (834). The clamping base (831) is provided with a hinge seat (837), on which a connecting rod (838) that cooperates with the hinge seat (837) and is connected to the shock-absorbing sling assembly (820) is provided.

9. A protective prefabricated staircase transport device as described in claim 1, characterized in that: The stabilizing and limiting component (300) includes a clamping U-frame (301) clamped on the transport vehicle plate (100). The stabilizing cross seat (200) has a plurality of clamping slots (210) that cooperate with the clamping U-frame (301). The clamping U-frame (301) is provided with a plurality of adjusting rods (302). The adjusting rods (302) are provided with adjusting plates (303) that cooperate with the transport vehicle plate (100). The clamping U-frame (301) is provided with a first insert (304). The stabilizing cross seat (200) is provided with a second insert (305) that cooperates with the first insert (304). The first insert (304) is provided with a first insert rod (306) that cooperates with the second insert (305).

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