Protective prefabricated stair transportation device

Abstract

The invention relates to the technical field of prefabricated part transportation, in particular to a protection type prefabricated stair transportation device which comprises two stable transverse seats symmetrically arranged on the two side edges of a transportation vehicle plate, stable limiting assemblies used for stably fixing the stable transverse seats to the transportation vehicle plate are arranged on the stable transverse seats, and the stable transverse seats are provided with a plurality of lifting supports. The lifting supports on the two stable transverse seats are arranged in a one-to-one correspondence mode, and a flexible lifting mechanism used for lifting the prefabricated stairs is arranged between the two lifting supports which are arranged in a one-to-one correspondence mode. Limiting bases are arranged at the two ends of the transport vehicle plate correspondingly, stabilizing assemblies used for stably fixing the limiting bases to the transport vehicle plate are arranged on the limiting bases, and a plurality of limiting mechanisms matched with the flexible lifting mechanisms and used for limiting displacement of the prefabricated stairs are arranged on the limiting bases. By means of a series of precisely-designed component structures and innovative application, all-around and multi-layer protection of the prefabricated stairs in the transportation process is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated component transportation, and in particular to a protective prefabricated staircase transportation device. Background Art

[0002] In the modern construction industry, prefabricated stairs are widely used as an efficient and economical building component. After the prefabricated stairs are produced in the factory, they need to be transported to the construction site for installation by transportation devices. However, during transportation, prefabricated stairs face many challenges, such as shaking, tilting, and collision, which may cause damage to the stairs, thus affecting their installation quality and safety of use.

[0003] Traditional prefabricated stair transport devices mostly use simple fixing methods, such as using ropes or straps to fix the stairs to the transport vehicle. However, this fixing method often has problems such as loose fixation and easy loosening, and cannot effectively prevent the stairs from shaking and tilting during transportation. In addition, traditional transport devices also lack shock-absorbing measures and cannot effectively reduce vibration and impact during transportation, increasing the risk of damage to the stairs.

[0004] In order to solve the above problems, the industry has begun to explore safer and more reliable prefabricated stair transport devices. A common improvement solution is to add a limit structure to the transport device to limit the swaying range of the stairs. However, these limit structures are often simple in design, lack sufficient stability and flexibility, and are difficult to adapt to prefabricated stairs of different sizes and shapes. At the same time, these limit structures are prone to wear and deformation after long-term use, reducing their service life and reliability.

[0005] How to solve the above technical problems is the subject faced by the present invention. Summary of the invention

[0006] In order to solve the shortcomings of the prior art, the present invention provides a reasonably designed, safe and reliable protective prefabricated staircase transportation device, which aims to ensure the safety and stability of prefabricated stairs during transportation through innovative structural design, and effectively prevent damage caused by shaking or collision. The device combines advanced technologies such as stable support, flexible lifting, shock-absorbing limit and precise limit, and realizes all-round protection of prefabricated stairs from loading to transportation and then to unloading.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a protective prefabricated staircase transport device, comprising two stable cross seats symmetrically arranged at both sides of a transport vehicle plate, the stable cross seats are provided with stable limiter components for stably fixing the stable cross seats on the transport vehicle plate, the stable cross seats are evenly provided with a plurality of lifting brackets along the length direction of the transport vehicle plate, and the lifting brackets on the two stable cross seats are arranged one-to-one, and a flexible lifting mechanism for lifting the prefabricated staircase is arranged between the two lifting brackets arranged one-to-one;

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

[0009] Further, the lifting bracket includes a connecting U-frame connected to the stable horizontal seat, the connecting U-frame is provided with a connecting rod matched with the stable horizontal seat, the connecting U-frame is provided with a plurality of connecting screws matched with the stable horizontal seat, the connecting U-frame is provided with a stable frame, the stable frame is provided with a lifting bracket matched with the stable frame, and the flexible lifting mechanism is provided on the lifting bracket;

[0010] The lifting bracket is provided with a lifting sleeve frame for sleeved on the stabilizing bracket, the lifting sleeve frame is provided with a lifting plug rod matched with the stabilizing bracket, and the lifting sleeve frame is provided with a lifting screw matched with the lifting bracket.

[0011] Further, the flexible lifting mechanism includes a flexible lifting component arranged between two corresponding lifting brackets and used to support the bottom end of the prefabricated staircase, the lifting bracket is provided with a shock-absorbing limiter component cooperating with the flexible lifting component and used to limit the left and right shaking of the prefabricated staircase, and a shock-absorbing corner protection component cooperating with the flexible lifting component and used to limit the front and back shaking of the prefabricated staircase and prevent the angle of the prefabricated staircase from being damaged is arranged between the two corresponding lifting brackets;

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

[0013] Further, the flexible lifting assembly includes a lifting slot provided on the lifting bracket, a lifting slider slidably matched with the lifting slot is provided in the lifting slot, a linear driving member matched with the lifting slider is provided on the lifting bracket, and the lifting slider is provided with a lifting frame;

[0014] The lifting frame is provided with a lifting shaft, a lifting roller is provided on the lifting shaft, rotating bearings for rotationally cooperating with the lifting frame are provided at both ends of the lifting shaft, a stable gear is provided at one end of the lifting shaft, a non-return ratchet for cooperating with the stable gear is provided on the lifting frame, a stable gear set for meshing with the stable gear is provided on the lifting bracket, and a driving shaft is coaxially provided on the lifting shaft, a driving disk is provided on the driving shaft, and a driving groove is provided on the driving disk;

[0015] A lifting cloth for supporting the prefabricated stairs is arranged between the two lifting rollers.

[0016] Preferably, a guide rod is provided in the lifting groove, and the lifting slide block is provided with a guide groove matched 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 plug 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 extrusion piece, an extrusion plate is provided at the telescopic end of the telescopic extrusion piece, a contact plate that fits with the side of the prefabricated staircase is provided at the side of the prefabricated staircase, and a number of shock-absorbing springs are provided between the extrusion plate and the contact plate.

[0018] Wherein, the telescopic extrusion piece can be set 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 sliding block slidably matched with the lifting slot, and the first sliding block is provided with a first guide slot matched with the guide rod.

[0020] Further, the shock-absorbing corner guard assembly includes a corner guard bracket connected to the lifting bracket, the corner guard bracket is provided with a corner guard plug rod connected to the lifting bracket, the corner guard bracket is provided with a corner guard screw connected to the lifting bracket, the corner guard bracket is provided with a horizontal cross seat, the horizontal cross seat is horizontally provided with a horizontal adjustment slot, the horizontal cross seat is provided with a positioning slot connected to the horizontal adjustment slot, a shock-absorbing slider is provided in the horizontal adjustment slot, the shock-absorbing slider is provided with a positioning screw that passes through the positioning slot, and the positioning screw is provided with a positioning pad that cooperates with the horizontal cross seat;

[0021] The damping slider is provided with a damping round frame, a damping ring frame is coaxially provided in the damping round frame, a plurality of damping springs are provided between the damping round frame and the damping ring frame, a sleeve is provided on the damping ring frame, and a plurality of fastening screws are provided on the sleeve;

[0022] A corner guard plate with an L-shaped cross section is arranged between the two shock-absorbing sliding blocks, corner guard seats are arranged at both ends of the corner guard plate, and a connecting rod connected to the sleeve is arranged on the corner guard seat.

[0023] Preferably, the corner guard bracket is provided with a second sliding block slidably matched with the lifting groove, and the second sliding block is provided with a second guide groove slidably matched with the guide rod.

[0024] Further, the limiting mechanism includes a limiting seat fixedly connected to the limiting base, a limiting plug plate is arranged on the limiting seat, a fastening plug rod is arranged on the limiting plug plate, a connecting screw connected to the limiting base is arranged on the limiting seat, a fixing frame is arranged on the limiting seat, a movable frame slidably matched with the fixing frame is arranged on the fixing frame, and a positioning plug rod matched with the movable frame is arranged on the fixing frame;

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

[0026] Furthermore, the shock-absorbing sling assembly includes a sling frame arranged on the suspension plate, a sling shaft is arranged on the sling frame, a winch is arranged on the sling shaft, a hinge rope connected to the clamping bracket assembly is arranged on the winch, movable bearings that rotate with the sling frame are arranged at both ends of the sling shaft, a stabilizing gear is arranged at one end of the sling shaft, a stabilizing gear group that meshes with the stabilizing gear is arranged on the sling frame, and a regulating disk is arranged at one end of the sling shaft, and a regulating groove is arranged on the regulating disk.

[0027] Furthermore, the clamping bracket assembly includes a clamping base, a first clamping plate is provided on the clamping base, a plurality of regulating grooves are opened on the clamping base, regulating bars are provided in the regulating grooves, a plurality of regulating bars are connected to the same second clamping plate, and the first clamping plate and the second clamping plate are arranged in parallel, a fixed screw cooperating with the regulating bar is provided on the clamping base, a hinged seat is provided on the clamping base, and a connecting rod cooperating with the hinged seat and connected to the shock-absorbing sling assembly is provided on the hinged seat.

[0028] Furthermore, the stabilizing and limiting assembly includes a clamping U-frame clamped on the transport vehicle plate, a plurality of clamping grooves cooperating with the clamping U-frame are opened on the stabilizing cross seat, a plurality of adjusting rods are provided on the clamping U-frame, an adjusting plate cooperating with the transport vehicle plate is provided on the adjusting rod, a first plug-in cylinder is provided on the clamping U-frame, a second plug-in cylinder cooperating with the first plug-in cylinder is provided on the stabilizing cross seat, and a first plug-in rod cooperating with the second plug-in cylinder is provided in the first plug-in cylinder.

[0029] The structure of the stabilizing component may be consistent with the structure of the above-mentioned stabilizing and limiting component.

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

[0031] The present invention realizes all-round limiting and fixing of prefabricated stairs through innovative stable limiting components. The clamping U frame, the first insert tube and the first insert rod work together to effectively prevent the stairs from shaking and tilting during transportation, greatly improving the safety of the transportation process. This design not only reduces the risk of staircase damage caused by shaking, but also ensures the stable posture of the stairs during transportation, providing reliable protection for subsequent on-site installation.

[0032] The present invention realizes multi-point support and shock-absorbing protection for the prefabricated stairs through the coordinated work of the stable cross seat, the lifting bracket and the flexible lifting mechanism. This design not only improves the stability during transportation, but also effectively absorbs and disperses vibration energy, reducing the impact and damage to the prefabricated stairs during transportation.

[0033] The use of the limiting mechanism and the stabilizing limiting assembly in the present invention ensures the accurate positioning of the prefabricated staircase during transportation. Through the accurate adjustment of the suspension plate and the damping sling assembly, the position of the prefabricated staircase can be strictly controlled, which is convenient for on-site installation.

[0034] The stable cross seat in the present invention serves as the basic supporting structure of the device. The stable cross seat is firmly fixed on the transport vehicle plate through a stable limit assembly, ensuring the stability and load-bearing capacity of the entire device. The lifting bracket is tightly connected to the stable cross seat through a connecting U frame, a connecting rod and a connecting screw to form a stable support system. The introduction of the lifting bracket and the lifting sleeve allows the lifting height to be flexibly adjusted according to the actual size of the prefabricated stairs, enhancing the adaptability and flexibility of the device.

[0035] The flexible lifting assembly in the present invention realizes precise support for the bottom of the prefabricated stairs through the coordinated action of the lifting slider, the linear drive and the lifting bracket. The design of the lifting roller and the lifting cloth not only reduces the friction with the bottom surface of the stairs, but also improves the stability and comfort of the support. The shock-absorbing limit assembly utilizes structures such as shock-absorbing seats, telescopic extrusions and shock-absorbing springs to effectively absorb vibrations and impacts during transportation, limit the left and right shaking of the prefabricated stairs, and protect the structural integrity of the stairs. The shock-absorbing corner protection assembly forms a double protection against the front and back shaking and angle changes of the prefabricated stairs through the combination of structures such as corner protection brackets, shock-absorbing sliders, shock-absorbing round frames and shock-absorbing ring frames, further enhancing the stability and safety of the device.

[0036] The limiting mechanism in the present invention realizes accurate limiting and stable fixation of both ends of the prefabricated stairs through the precise design of the limiting seat, limiting plug plate, movable frame and shock-absorbing sling assembly. The introduction of the clamping bracket assembly makes the limiting more firm and effectively prevents the displacement and tilt of the stairs during transportation. The stabilizing assembly is similar in structure to the stable limiting assembly, but it is optimized according to the characteristics of the limiting base, ensuring the stable connection between the limiting base and the transport vehicle plate, and improving the stability and load-bearing capacity of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0038] Figure 2 It is a coordination diagram of the stable cross seat and the flexible lifting mechanism under the multiple prefabricated stairs of the present invention;

[0039] Figure 3 It is a coordination diagram of a stable horizontal seat and a flexible lifting mechanism under a single prefabricated staircase of the present invention;

[0040] Figure 4 It is a schematic diagram of the cooperation between a single prefabricated staircase and a flexible lifting mechanism of the present invention;

[0041] Figure 5 It is a schematic diagram of the coordination of the stable horizontal seat, the lifting bracket and the flexible lifting mechanism of the present invention;

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

[0043] Figure 7 It is an exploded schematic diagram of the lifting bracket and the flexible lifting mechanism of the present invention;

[0044] Figure 8 It is an exploded schematic diagram of a partial structure of the flexible lifting mechanism of the present invention.

[0045] Fig. 9This is a diagram showing the coordination of the transport vehicle plates and the limiting mechanisms under the multiple prefabricated stairs of the present invention.

[0046] Fig.10 This is a diagram showing the coordination of the limiting base and the limiting mechanism under a single prefabricated staircase of the present invention.

[0047] Fig.11 It is a coordination diagram of a single limiting mechanism and a limiting base of the present invention;

[0048] Fig.12 This is an enlarged view of the structure of region A of the present invention;

[0049] Fig.13 It is a structural schematic diagram of the clamping bracket assembly of the present invention;

[0050] The accompanying drawings are marked as follows: 100, transport vehicle plate; 200, stable horizontal seat; 210, clamping groove; 300, stable limit assembly; 301, clamping U frame; 302, adjustment rod; 303, adjustment plate; 304, first plug cylinder; 305, second plug cylinder; 306, first plug rod; 400, lifting bracket; 410, connecting U frame; 420, connecting plug rod; 430, connecting screw; 440, stable frame; 450, lifting bracket; 451, lifting groove; 460, lifting sleeve; 470, lifting plug rod; 480, lifting screw; 500, flexible support Lifting mechanism; 510, flexible lifting assembly; 511, lifting slider; 512, lifting bracket; 513, lifting shaft; 514, rotating bearing; 515, stable gear; 516, stable gear set; 517, driving plate; 518, driving slot; 519, lifting cloth; 520, shock-absorbing limit assembly; 521, limit U frame; 522, limit plug rod; 523, limit screw; 524, shock-absorbing seat; 525, telescopic extrusion piece; 526, extrusion plate; 527, contact plate; 528, shock-absorbing spring; 540, shock-absorbing corner guard assembly; 541, corner guard support Frame; 542, corner protection rod; 543, corner protection screw; 544, horizontal cross seat; 545, horizontal adjustment slot; 546, positioning slot; 547, shock absorbing slider; 548, positioning screw; 549, shock absorbing round frame; 550, shock absorbing ring frame; 551, sleeve; 552, fastening screw; 553, corner protection plate; 554, corner protection seat; 555, connecting rod; 600, limiting base; 700, stabilizing component; 800, limiting mechanism; 810, limiting seat; 811, limiting plug plate; 812, fastening plug 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, capstan; 824, hinge rope; 825, movable bearing; 826, stabilizing gear; 827, stabilizing gear set; 828, regulating disk; 830, clamping bracket assembly; 831, clamping base; 832, first clamping plate; 833, regulating slide groove; 834, regulating strip; 835, second clamping plate; 836, set screw; 837, hinged seat; 838, connecting rod. DETAILED DESCRIPTION

[0051] See also Figures 1 to 13As shown, a protective prefabricated staircase transport device comprises two stable cross seats 200 symmetrically arranged at both sides of a transport vehicle plate 100, the stable cross seats 200 are provided with a stable limiting assembly 300 for stably fixing the stable cross seats 200 on the transport vehicle plate 100, the stable cross seats 200 are evenly provided with a plurality of lifting brackets 400 along the length direction of the transport vehicle plate 100, and the lifting brackets 400 on the two stable cross seats 200 are arranged one by one, and a flexible lifting mechanism 500 for lifting the prefabricated staircase is arranged between the two lifting brackets 400 arranged one by one;

[0052] A limiting base 600 is provided at both ends of the transport vehicle plate 100, and a stabilizing component 700 is provided on the limiting base 600 for stably fixing the limiting base 600 on the transport vehicle plate 100. The limiting base 600 is 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; when in use, each of the prefabricated stairs corresponds to at least two of the flexible lifting mechanisms 500, and each of the two ends of the prefabricated stairs corresponds to at least two limiting mechanisms 800.

[0053] Specifically, the device includes two stable cross seats 200 symmetrically arranged at both sides of the transport vehicle plate 100, which are fixed on the transport vehicle plate 100 through a stable limiting assembly 300 to ensure stability during transportation. The stable cross seat 200 is evenly provided with a number of lifting brackets 400 along the length direction of the transport vehicle plate 100, and these brackets are correspondingly arranged to provide support for the prefabricated stairs. A flexible lifting mechanism 500 is arranged between the corresponding two lifting brackets 400, which is responsible for lifting the prefabricated stairs, allowing the stairs to have a certain flexible deformation space during transportation, and reducing the impact caused by uneven road surface. A limited base 600 is arranged at both ends of the transport vehicle plate 100, on which a stabilizing assembly 700 and a limiting mechanism 800 are arranged, which cooperate with the flexible lifting mechanism 500 to limit the displacement of the prefabricated stairs and ensure that the stairs will not deviate during transportation. Among them, a stable support platform is formed by the fixed connection between the stable cross seat 200 and the transport vehicle plate 100, and the uniform distribution of the lifting brackets 400. The stabilizing and limiting assembly 300 and the stabilizing assembly 700 ensure the stability of the entire device during transportation and prevent displacement caused by vehicle bumps. The above device finally forms a stable support system. When in use, each prefabricated staircase is supported by at least two flexible supporting mechanisms 500, and at least two limiting mechanisms 800 correspond to the two ends of the staircase to ensure the stability of the staircase during transportation.

[0054] Further, the lifting bracket 400 includes a connecting U-frame 410 connected to the stable horizontal seat 200, the connecting U-frame 410 is provided with a connecting rod 420 matched with the stable horizontal seat 200, the connecting U-frame 410 is provided with a plurality of connecting screws 430 matched with the stable horizontal seat 200, the connecting U-frame 410 is provided with a stable frame 440, the stable frame 440 is provided with a lifting bracket 450 matched with the stable frame 440, and 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 being sleeved on the stabilizing bracket 440 , the lifting sleeve 460 is provided with a lifting rod 470 that cooperates with the stabilizing bracket 440 , and the lifting sleeve 460 is provided with a lifting screw 480 that cooperates with the lifting bracket 450 .

[0056] Specifically, the lifting bracket 400 is composed of a connecting U-frame 410, a lifting bracket 450 and a stabilizing frame 440. The connecting U-frame 410 is fixed to the stabilizing cross seat 200 by connecting the plug rod 420 and screws, providing basic support for the entire bracket to form a stable support system. The lifting bracket 450 can move up and down along the stabilizing frame 440, and can be locked in position by the lifting plug rod 470 and screws on the lifting sleeve 460. The design of the lifting sleeve 460 and the lifting screw 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 bracket 450 allows the operator to flexibly adjust the support point according to the actual height of the stairs, thereby ensuring that the stairs are stably lifted and reducing the risk of damage caused by improper support.

[0057] Further, the flexible lifting mechanism 500 includes a flexible lifting component 510 disposed between two corresponding lifting brackets 450 and used to support the bottom end of the prefabricated staircase, the lifting bracket 450 is provided with a damping limiter component 520 that cooperates with the flexible lifting component 510 and is used to limit the left and right shaking of the prefabricated staircase, and a damping corner protection component 540 that cooperates with the flexible lifting component 510 and is used to limit the front and back shaking of the prefabricated staircase and 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 supporting component 510 and the shock absorbing and 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 and corner protection component 540. Among them, the lifting component uses a lifting roller to support the bottom of the stairs, and controls its rise and fall through a linear drive component; the shock-absorbing and limiting component 520 is composed of a telescopic extrusion component 525 plus a shock-absorbing spring 528, which is used to limit the left and right shaking of the stairs; and the shock-absorbing and corner protection component 540 is used to prevent the stairs from moving forward and backward and protect the angle of the stairs from deformation. In response to vibrations and impacts during transportation, the flexible lifting mechanism 500 provides the necessary buffering effect, which can absorb external forces and reduce the pressure on the stairs. In addition, the overall stability is further improved through multi-point support.

[0060] In general, when the support bracket 400 and the flexible support mechanism 500 are combined, they form a complete support system. The support bracket 400 is responsible for providing rigid support and adjustable height to ensure that the stairs are properly placed; while the flexible support mechanism 500 adds a shock-absorbing effect on this basis, so that the stairs can remain relatively stable even under relatively harsh road conditions. This combination not only solves the limitations that may be caused by the use of only rigid or flexible supports, such as the problem that only relying on hard materials for support may cause excessive local pressure, or relying entirely on soft cushions may lead to insufficient support, but also greatly enhances the scope of application and safety of the entire system.

[0061] Furthermore, the flexible lifting component 510 includes a lifting slot 451 provided on the lifting bracket 450, a lifting slider 511 slidably matched with the lifting slot 451 is provided in the lifting slot 451, a linear driving member matched with the lifting slider 511 is provided on the lifting bracket 450, and the lifting slider 511 is provided with a lifting frame 512;

[0062] The lifting frame 512 is provided with a lifting shaft 513, and a lifting roller is provided on the lifting shaft 513. Rotating bearings 514 that rotate with the lifting frame 512 are provided at both ends of the lifting shaft 513. A stable gear 515 is provided at one end of the lifting shaft 513. A non-return ratchet that cooperates with the stable gear 515 is provided on the lifting frame 512. A stable gear set 516 that meshes with the stable gear 515 is provided on the lifting bracket 400. A driving shaft is coaxially provided on the lifting shaft 513, and a driving disk 517 is provided on the driving shaft. A driving slot 518 is provided on the driving disk 517.

[0063] A lifting cloth 519 for supporting the prefabricated stairs is arranged between the two lifting rollers.

[0064] Preferably, a guide rod is provided in the lifting groove 451, and the lifting slider 511 is provided with a guide groove matched 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 plug 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 piece 525, the telescopic end of the telescopic extrusion piece 525 is provided with an extrusion plate 526, the side of the prefabricated staircase is provided with a resistance plate 527 that fits with the side of the prefabricated staircase, and a plurality of shock-absorbing springs 528 are provided between the extrusion plate 526 and the resistance plate 527.

[0066] The telescopic extrusion member 525 may be configured as a hydraulic telescopic rod or a screw-type jacking device in the shape of a parallelogram.

[0067] Preferably, the limiting U frame 521 is provided with a first sliding block slidably matched with the lifting slot 451 , and the first sliding block is provided with a first guide slot matched with the guide rod.

[0068] Further, the shock-absorbing corner protection assembly 540 includes a corner protection bracket 541 connected to the lifting bracket 450, the corner protection bracket 541 is provided with a corner protection plug rod 542 connected to the lifting bracket 450, the corner protection bracket 541 is provided with a corner protection screw 543 connected to the lifting bracket 450, the corner protection bracket 541 is provided with a horizontal cross seat 544, the horizontal cross seat 544 is horizontally provided with a horizontal adjustment slot 545, the horizontal cross seat 544 is provided with a positioning slot 546 connected to the horizontal adjustment slot 545, a shock-absorbing slider 547 is provided in the horizontal adjustment slot 545, the shock-absorbing slider 547 is provided with a positioning screw 548 penetrating the positioning slot 546, and the positioning screw 548 is provided with a positioning pad matched with the horizontal cross seat 544;

[0069] The shock absorbing slider 547 is provided with a shock absorbing round frame 549, a shock absorbing ring frame 550 is coaxially provided in the shock absorbing round frame 549, a plurality of shock absorbing springs 528 are provided between the shock absorbing round frame 549 and the shock absorbing ring frame 550, a sleeve 551 is provided on the shock absorbing ring frame 550, and a plurality of fastening screws 552 are provided on the sleeve 551;

[0070] A corner guard plate 553 with an L-shaped cross section is arranged between the two shock-absorbing sliders 547 . Corner guard seats 554 are arranged at both ends of the corner guard plate 553 . A connecting rod 555 connected to the sleeve 551 is arranged on the corner guard seat 554 .

[0071] Preferably, the corner guard bracket 541 is provided with a second sliding block slidably matched with the lifting groove 451, and the second sliding block is provided with a second guide groove slidably matched with the guide rod.

[0072] Specifically, the flexible lifting mechanism 500 is the core component of the device, providing a flexible support that can adapt to the shape and size of the prefabricated stairs, while reducing the impact and vibration caused by uneven road surfaces during transportation. Traditional rigid lifting mechanisms may cause damage to the prefabricated stairs due to uneven road surfaces. The flexible lifting mechanism 500 can absorb and reduce these impacts through its flexible characteristics, thereby protecting the stairs from damage. It is designed to provide stable and shock-absorbing support to ensure the safety of the prefabricated stairs during transportation.

[0073] In the flexible lifting assembly 510, it includes a lifting groove 451, a lifting slider 511, a linear drive, etc., which work together to allow the lifting assembly to be fine-tuned in the vertical direction to adapt to prefabricated stairs of different heights. The size of the prefabricated stairs may vary, and the flexible lifting assembly 510 can ensure that the stairs are always kept at a suitable height during transportation to prevent instability caused by size mismatch. Among them, the linear drive controls the movement of the lifting slider 511 in the lifting groove 451 to achieve the height adjustment of the lifting roller. This enables the flexible lifting assembly 510 to adapt to prefabricated stairs of different heights and ensure that the bottom of the stairs is always in the best supporting position. The lifting roller is used to adjust the contraction amount of the lifting cloth 519, and the lifting cloth 519 directly contacts and supports the bottom of the prefabricated stairs to provide stable and uniform support. This direct support method reduces the risk of local pressure on the stairs and prevents damage caused by stress concentration. The combination of the stabilizing gear 515 and the check ratchet ensures that the lifting 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 and avoids displacement or tilting of the staircase due to 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, a telescopic extrusion piece 525, etc., which are used to provide buffering when the prefabricated stairs shake left and right, and reduce friction and impact. During transportation, the stairs may shake left and right due to the movement of the vehicle. The shock-absorbing and limiting assembly 520 can effectively limit this shaking and protect the edges of the stairs from impact. The limiting plate is used to limit the shaking of the prefabricated stairs in the horizontal direction to ensure stability. The shock-absorbing spring 528 and the telescopic extrusion piece 525 can absorb and disperse vibration energy and reduce the impact on the stairs.

[0075] The shock-absorbing corner guard assembly 540 includes a corner guard bracket 541, a horizontal cross seat 544, a shock-absorbing slider 547, etc., which work together to limit the forward and backward shaking of the prefabricated stairs, while protecting the angle of the stairs from damage. The prefabricated stairs may move forward and backward due to the acceleration or braking of the vehicle during transportation. The shock-absorbing corner guard assembly 540 can limit this movement and avoid collision and angle deformation between the stairs.

[0076] Therefore, the flexible lifting assembly 510, the shock absorbing and limiting assembly 520 and the shock absorbing and corner protection assembly 540 work together to form a comprehensive protection system. The flexible lifting assembly 510 ensures the stability of the stairs in the vertical direction; the shock absorbing and limiting assembly 520 and the shock absorbing and corner protection assembly 540 provide protection in the horizontal direction, respectively, to limit the left and right and front and back shaking of the stairs. This comprehensive protection mechanism ensures the safety and integrity of the prefabricated stairs during transportation.

[0077] Further, the limiting mechanism 800 includes a limiting seat 810 fixedly connected to the limiting base 600, a limiting plug plate 811 is provided on the limiting seat 810, a fastening plug rod 812 is provided on the limiting plug plate 811, a connecting screw 813 connected to the limiting base 600 is provided on the limiting seat 810, a fixing frame 814 is provided on the limiting seat 810, a movable frame 815 slidably matched with the fixing frame 814 is provided on the fixing frame 814, and a positioning plug rod 816 matched with the movable frame 815 is provided on the fixing frame 814;

[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 sling assembly 820 is provided on the suspension plate 817, and a clamping bracket assembly 830 for clamping one end of the prefabricated stairs is provided at the bottom end of the shock-absorbing sling assembly 820.

[0079] Furthermore, the shock-absorbing sling assembly 820 includes a sling frame 821 arranged on the suspension plate 817, a sling shaft 822 is arranged on the sling frame 821, a winch 823 is arranged on the sling shaft 822, a hinge rope 824 connected to the clamping bracket assembly 830 is arranged on the winch 823, movable bearings 825 that rotatably cooperate with the sling frame 821 are arranged at both ends of the sling shaft 822, a stabilizing gear 826 is arranged at one end of the sling shaft 822, a stabilizing gear group 827 that meshes with the stabilizing gear 826 is arranged on the sling frame 821, and a regulating disk 828 is arranged at one end of the sling shaft 822, and a regulating groove is arranged on the regulating disk 828.

[0080] Furthermore, the clamping bracket assembly 830 includes a clamping base 831, on which a first clamping plate 832 is provided, and on which a plurality of regulating grooves 833 are opened, in which a regulating strip 834 is provided, and a plurality of regulating strips 834 are connected to the same second clamping plate 835, and the first clamping plate 832 is arranged in parallel with the second clamping plate 835, and on the clamping base 831 a fixed screw 836 cooperating with the regulating strip 834 is provided, and on the clamping base 831 a hinged seat 837 is provided, and on the hinged seat 837 a connecting rod 838 cooperating with the hinged seat 837 and connected to the shock-absorbing sling assembly 820 is provided.

[0081] In general, during transportation, the movement of the vehicle may cause the stairs to be displaced or tilted. The role of the limiting mechanism 800 is to limit the displacement of the prefabricated stairs during transportation and ensure that the stairs remain in the correct position. Among them, the limiting seat 810 is usually installed at both ends of the transport vehicle plate 100, and is used in conjunction with the fixed frame 814 and the movable frame 815. It provides a fixed base point for installing other limiting components to ensure that these components can function in the correct position. The fixed frame 814 is the main supporting structure in the limiting mechanism 800. It is firmly fixed to the transport vehicle plate 100 by bolts or other fasteners, providing stable support for the entire limiting mechanism 800, ensuring that the limiting seat 810 and other components will not loosen or shift during transportation. The movable frame 815 is an adjustable structure that can be connected to the fixed frame 814 by a hinge or other connection method, thereby allowing the operator to adjust the position of the movable frame 815 according to the specific size and shape of the stairs to better adapt to different types of stairs and improve the limiting effect. The suspension plate 817 is usually a metal plate with hooks or holes, which is installed on the movable frame 815. It fixes the end of the stairs by hanging to prevent the stairs from moving up and down during transportation. 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 the acceleration or braking of the vehicle. 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 a sling, a shock-absorbing spring 528 and other connectors, and the sling connects the suspension plate 817 and the end of the stairs to provide vertical support, thereby providing additional suspension support. The shock-absorbing spring 528 is used to absorb vibrations and shocks during transportation and reduce the pressure on the stairs. The clamping bracket assembly 830 includes structures such as a clamping bracket, fasteners and gaskets. The clamping bracket directly clamps the side or bottom of the stairs to provide an additional fixing point. The clamping force can be adjusted through the fasteners to ensure that the stairs will not be displaced during transportation.

[0083] It can be seen that the limiting seat 810, the fixed frame 814, the movable frame 815, the suspension plate 817, the shock-absorbing sling assembly 820 and the clamping bracket assembly 830 work together to form a comprehensive limiting system. This system not only limits the displacement of the stairs during transportation, but also provides shock-absorbing protection to ensure the safety and integrity of the stairs during transportation. At the same time, the limiting mechanism 800 and the flexible lifting mechanism 500 together constitute a complete support and protection system. The flexible lifting mechanism 500 is responsible for providing rigid support with adjustable height to ensure that the stairs are placed correctly; the limiting mechanism 800 provides necessary limiting and buffering in multiple directions to prevent any unnecessary movement of the stairs during transportation.

[0084] Furthermore, the stabilizing and limiting assembly 300 includes a clamping U frame 301 clamped on the transport vehicle plate 100, a plurality of clamping grooves 210 cooperating with the clamping U frame 301 are opened on the stabilizing cross seat 200, a plurality of adjustment rods 302 are arranged on the clamping U frame 301, an adjustment plate 303 cooperating with the transport vehicle plate 100 is arranged on the adjustment rod 302, a first plug cylinder 304 is arranged on the clamping U frame 301, a second plug cylinder 305 cooperating with the first plug cylinder 304 is arranged on the stabilizing cross seat 200, and a first plug rod 306 cooperating with the second plug cylinder 305 is arranged in the first plug cylinder 304.

[0085] The structure of the stabilizing assembly 700 may be consistent with the structure of the above-mentioned stabilizing and limiting assembly 300 .

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

[0087] Specifically, the stabilizing and limiting assembly 300 and the stabilizing assembly 700 are very important components of the protective prefabricated staircase transport device. They work together to ensure that the prefabricated staircase can be firmly fixed on the transport vehicle during transportation to prevent it from displacement or sliding, thereby ensuring transportation safety. The main function of the stabilizing and limiting assembly 300 is to firmly fix the stabilizing cross seat 200 on the transport vehicle plate 100 to prevent the stabilizing cross seat 200 from displacement during transportation, thereby ensuring the stability of the entire flexible lifting system and the prefabricated staircase. The main function of the stabilizing assembly 700 is to firmly fix the limiting base 600 on the transport vehicle plate 100 to prevent the limiting base 600 from displacement during transportation, and provide a stable reference point for the limiting mechanism 800. The stabilizing and limiting assembly 300 and the stabilizing assembly 700 are respectively fixed on both sides and both ends of the transport vehicle plate 100 to form an integral fixed frame. The coordinated work of the stabilizing and limiting assembly 300 and the stabilizing assembly 700 ensures the stability of the entire device during transportation and prevents displacement or overturning due to bumps.

[0088] During the specific operation, during the loading stage, the stabilizing cross seat 200 is fixed to the transport vehicle plate 100 through the stabilizing limit assembly 300 to ensure that the stabilizing cross seat 200 is evenly distributed along the length direction of the vehicle plate. Subsequently, the height of the lifting bracket 400 is adjusted according to the size and weight of the prefabricated stairs so that the flexible lifting mechanism 500 can accurately lift the bottom of the stairs. The shock absorbing limit assembly 520 and the shock absorbing corner guard assembly 540 are used to make fine adjustments according to the shape of the stairs to ensure that the stairs are fully wrapped and fixed. Finally, the prefabricated stairs are placed on the lifting mechanism, and the two ends of the stairs are accurately limited by the clamping bracket assembly 830 and the shock absorbing sling assembly 820.

[0089] During the transportation phase, the transport vehicle is started. During the transportation process, the stable support system keeps the device stable as a whole. The flexible lifting mechanism 500 absorbs the vibration of the vehicle and reduces the impact on the stairs. The shock-absorbing limiter and the corner guard assembly work together to limit the shaking of the stairs in three-dimensional space and protect the integrity of the staircase structure. The precise limiter 800 ensures that the position of the stairs is fixed to prevent displacement or tilting caused by bumps.

[0090] In the unloading stage, after reaching the destination, first release the clamping of the limit mechanism 800, then slowly lower the lifting bracket 400, so that the prefabricated stairs land smoothly. Remove the stabilizing cross seat 200 and its accessories to complete the unloading process.

[0091] Technical features not described in the present invention can be achieved through or by adopting existing technologies and will not be described in detail here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A protective prefabricated staircase transport device, characterized in that: The invention comprises two stable cross seats (200) symmetrically arranged at both sides of a transport vehicle plate (100), the stable cross seats (200) being provided with a stable limiting assembly (300) for stably fixing the stable cross seats (200) on the transport vehicle plate (100), the stable cross seats (200) being evenly provided with a plurality of lifting brackets (400) along the length direction of the transport vehicle plate (100), and the lifting brackets (400) on the two stable cross seats (200) being arranged one-to-one correspondingly, and a flexible lifting mechanism (500) for lifting the prefabricated stairs being arranged between the two lifting brackets (400) arranged one-to-one correspondingly; Limiting bases (600) are provided at both ends of the transport vehicle plate (100), and a stabilizing component (700) is provided on the limiting base (600) for stably fixing the limiting base (600) on the transport vehicle plate (100). The limiting base (600) is 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; when in use, each of the prefabricated stairs corresponds to at least two of the flexible lifting mechanisms (500), and each of the two ends of the prefabricated stairs corresponds to at least two limiting mechanisms (800).

2. A protective prefabricated staircase transport device as claimed in claim 1, characterized in that: The lifting bracket (400) comprises a connecting U-frame (410) connected to the stabilizing cross seat (200), the connecting U-frame (410) is provided with a connecting plug rod (420) matched with the stabilizing cross seat (200), the connecting U-frame (410) is provided with a plurality of connecting screws (430) matched with the stabilizing cross seat (200), the connecting U-frame (410) is provided with a stabilizing frame (440), the stabilizing frame (440) is provided with a lifting bracket (450) matched with the stabilizing frame (440), and the flexible lifting mechanism (500) is provided on the lifting bracket (450); The lifting bracket (450) is provided with a lifting sleeve (460) for being sleeved on the stabilizing bracket (440), the lifting sleeve (460) is provided with a lifting rod (470) that cooperates with the stabilizing bracket (440), and the lifting sleeve (460) is provided with a lifting screw (480) that cooperates with the lifting bracket (450).

3. A protective prefabricated staircase transport device as claimed in claim 2, characterized in that: The flexible lifting mechanism (500) comprises a flexible lifting component (510) arranged between two corresponding lifting brackets (450) and used to support the bottom end of the prefabricated staircase, a shock absorbing and limiting component (520) cooperating with the flexible lifting component (510) and used to limit the left and right shaking of the prefabricated staircase is arranged on the lifting bracket (450), and a shock absorbing and corner protection component (540) cooperating with the flexible lifting component (510) and used to limit the front and back shaking of the prefabricated staircase and prevent the angle of the prefabricated staircase from being damaged is arranged between the two corresponding lifting brackets (450); The shock absorbing and limiting component (520) is located between the flexible lifting component (510) and the shock absorbing and corner protection component (540).

4. A protective prefabricated staircase transport device as claimed in claim 3, characterized in that: The flexible lifting component (510) comprises a lifting groove (451) provided on the lifting bracket (450), a lifting slider (511) slidably matched with the lifting groove (451) is provided in the lifting groove (451), a linear driving member matched with the lifting slider (511) is provided on the lifting bracket (450), and the lifting slider (511) is provided with a lifting frame (512); The lifting frame (512) is provided with a lifting shaft (513), the lifting shaft (513) is provided with a lifting roller, both ends of the lifting shaft (513) are provided with rotating bearings (514) that are rotatably matched with the lifting frame (512), one end of the lifting shaft (513) is provided with a stable gear (515), the lifting frame (512) is provided with a non-return ratchet that is matched with the stable gear (515), the lifting bracket (400) is provided with a stable gear set (516) that meshes with the stable gear (515), and the lifting shaft (513) is coaxially provided with a driving shaft, the driving shaft is provided with a driving disk (517), and the driving disk (517) is provided with a driving groove (518); A lifting cloth (519) for supporting the prefabricated stairs is arranged between the two lifting rollers.

5. The protective prefabricated staircase transport device according to claim 1, characterized in that: The shock-absorbing and limiting assembly (520) comprises a limiting U frame (521) matched with the lifting bracket (450), the limiting U frame (521) is provided with a limiting plug rod (522) matched with the lifting bracket (450), the limiting U frame (521) is provided with a limiting screw (523) matched 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 piece (525), the telescopic end of the telescopic extrusion piece (525) is provided with an extrusion plate (526), ​​the side of the prefabricated staircase is provided with a contact plate (527) in contact with the side of the prefabricated staircase, and a plurality of shock-absorbing springs (528) are provided between the extrusion plate (526) and the contact plate (527).

6. A protective prefabricated staircase transport device as claimed in claim 1, characterized in that: The shock-absorbing corner protection assembly (540) comprises a corner protection bracket (541) connected to the lifting bracket (450), the corner protection bracket (541) is provided with a corner protection plug rod (542) connected to the lifting bracket (450), the corner protection bracket (541) is provided with a corner protection screw (543) connected to the lifting bracket (450), the corner protection bracket (541) is provided with a horizontal cross seat (544), and the horizontal cross seat (544) is horizontally A horizontal adjustment groove (545) is provided, a positioning groove (546) connected to the horizontal adjustment groove (545) is provided on the horizontal cross seat (544), a shock absorbing slider (547) is provided in the horizontal adjustment groove (545), a positioning screw (548) penetrating the positioning groove (546) is provided on the shock absorbing slider (547), and a positioning pad matched with the horizontal cross seat (544) is provided on the positioning screw (548); The shock absorbing slider (547) is provided with a shock absorbing round frame (549), a shock absorbing ring frame (550) is coaxially provided in the shock absorbing round frame (549), a plurality of shock absorbing springs (528) are provided between the shock absorbing round frame (549) and the shock absorbing ring frame (550), a sleeve (551) is provided on the shock absorbing ring frame (550), and a plurality of fastening screws (552) are provided on the sleeve (551); A corner guard plate (553) with an L-shaped cross section is arranged between the two shock-absorbing sliders (547), corner guard seats (554) are arranged at both ends of the corner guard plate (553), and a connecting rod (555) connected to the sleeve (551) is arranged on the corner guard seat (554).

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

8. The protective prefabricated staircase transport device according to claim 1, characterized in that: The shock-absorbing sling assembly (820) comprises a sling frame (821) arranged on the suspension plate (817), a sling shaft (822) being arranged on the sling frame (821), a winch (823) being arranged on the sling shaft (822), a hinge rope (824) connected to the clamping bracket assembly (830) being arranged on the winch (823), movable bearings (825) rotatably matched with the sling frame (821) being arranged at both ends of the sling shaft (822), a stabilizing gear (826) being arranged at one end of the sling shaft (822), a stabilizing gear set (827) meshing with the stabilizing gear (826) being arranged on the sling frame (821), a regulating disk (828) being arranged at one end of the sling shaft (822), and a regulating groove being arranged on the regulating disk (828).

9. The protective prefabricated staircase transport device according to claim 1, characterized in that: The clamping bracket assembly (830) includes a clamping base (831), a first clamping plate (832) is arranged on the clamping base (831), a plurality of regulating grooves (833) are opened on the clamping base (831), a regulating strip (834) is arranged in the regulating groove (833), a plurality of regulating 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 in parallel, a fixed screw (836) cooperating with the regulating strip (834) is arranged on the clamping base (831), a hinge seat (837) is arranged on the hinge seat (837), and a connecting rod (838) cooperating with the hinge seat (837) and connected to the shock-absorbing sling assembly (820) is arranged on the hinge seat (837).

10. The protective prefabricated staircase transport device according to claim 1, characterized in that: The stabilizing and limiting assembly (300) comprises a clamping U frame (301) clamped on the transport vehicle plate (100); a plurality of clamping grooves (210) cooperating with the clamping U frame (301) are provided on the stabilizing cross seat (200); a plurality of adjusting rods (302) are provided on the clamping U frame (301); an adjusting plate (303) cooperating with the transport vehicle plate (100) is provided on the adjusting rod (302); a first plug-in cylinder (304) is provided on the clamping U frame (301); a second plug-in cylinder (305) cooperating with the first plug-in cylinder (304) is provided on the stabilizing cross seat (200); and a first plug-in rod (306) cooperating with the second plug-in cylinder (305) is provided in the first plug-in cylinder (304).

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