A flat lifting work platform

Abstract

This utility model discloses a flattened lifting work platform, including a base, a guide rail frame, a drive unit, a wall-mounted frame, and a work platform. The base is located on a solid and flat ground or platform, and adjustable support seats are provided at the four corners of the base. The base is connected to the guide rail frame via connectors. The guide rail frame consists of several standard sections, and the upper and lower ends of the four main chord columns of each standard section are welded with concave-convex stop structures. The guide rail frame is attached to the surface of the building wall via the wall-mounted frame. A main beam is installed on the drive frame, and the work platform is located on the main beam. The drive frame is equipped with limit touch switches, and limit rulers are provided at the upper and lower ends of the guide rail frame. The limit touch switches and limit rulers work together to achieve the limiting purpose. This utility model's flattened lifting work platform, through its rapid installation and dismantling system, unique eccentric structure, and one-button lifting function, optimizes the construction operation process, improves construction efficiency, and reduces operating costs.

Description

Technical Field

[0001] This utility model relates to a flat lifting operation platform, belonging to the field of civil engineering technology for liquefied natural gas storage tanks in the energy industry. Background Technology

[0002] In the construction of the outer tank walls of current large-scale liquefied natural gas (LNG) storage tank projects, it is necessary to sequentially thread, tension, grout, and seal the prestressed tendons in the pre-reserved circumferential ducts within the tank wall. By threading the tendons into the pre-reserved ducts and tensioning the prestressed tendons, corresponding compressive stress is generated in advance, thereby improving structural performance. With the rapid development of large-scale LNG storage tank construction projects and the stabilization of construction technology, while tank capacity continues to expand, construction progress is accelerating, and cost control is becoming increasingly demanding. Traditional prestressed construction platforms, such as suspended platforms or full-span scaffolding platforms, are not only complex to erect and dismantle, posing high safety risks, and inefficient, but also consume significant manpower and material resources, increasing the project's cost burden. Utility Model Content

[0003] Purpose of the utility model: In order to overcome the shortcomings of the existing technology, this utility model provides a flat lifting work platform, which optimizes the construction operation process, improves construction efficiency, and reduces operating costs through its quick installation and dismantling system, unique eccentric structure, and one-button lifting function.

[0004] Technical Solution: To solve the above-mentioned technical problems, this utility model provides a flat lifting work platform, including a base, a guide rail frame, a drive device, a wall-mounted frame, and a work platform. The base is located on a solid and flat ground or platform. Adjustable support seats are provided at the four corners of the base. The base is connected to the guide rail frame via connectors. The guide rail frame is composed of several unit sections. The upper and lower ends of the four main chord column tubes of each unit section are welded with concave-convex stop structures. The guide rail frame is attached to the surface of the building wall via the wall-mounted frame. The drive device includes a drive frame, a drive motor, a fall arrestor, a single guide wheel, a double guide wheel, and a safety hook. The drive frame is welded from plates and profiles. The single and double guide wheels are both mounted on the drive frame. On the upper part, single and double guide wheels are respectively attached to the column tube and move along the column tube. A drive motor is installed on the drive frame and connected to the drive gear. A rack is installed on the guide rail frame, and the drive gear meshes with the rack. The drive motor drives the drive frame to move along the guide rail frame. The safety hook is installed on the drive frame by bolts. The column tube is located between the safety hook and the drive frame. The fall arrestor is installed on the drive frame, and the gear of the fall arrestor meshes with the rack. A main beam is installed on the drive frame, and the working platform is located on the main beam. The drive frame is equipped with limit touch switches, and limit rulers are provided at the upper and lower ends of the guide rail frame. The limit touch switches and limit rulers work together to achieve the limiting purpose.

[0005] Preferably, the base is provided with a buffer spring via a screw, and the distance between the buffer spring and the lower limit position of the drive frame is 150-200mm.

[0006] Preferably, the guide rail frame is composed of interconnected unit sections. Each unit section is welded from seamless steel pipes, angle steel, and steel pipes. It has a rack on the front and is fastened with three internal hexagonal screws. The upper and lower ends of the four main chord column tubes of the unit section are welded with concave and convex stop structures, which can be accurately installed and aligned during connection. After the alignment and connection are completed, they are connected by high-strength hexagonal connecting bolts. The top of the guide rail frame has an anti-impact structure.

[0007] Preferably, the drive frame has a total of 6 sets of single guide wheels and 4 sets of double guide wheels. The upper part of the drive frame has 2 sets of single guide wheels, which are located on the left and right sides of the main chord column tube on the front of the guide frame, respectively. The upper 2 sets of double guide wheels are located inside the main chord column tube on the front of the guide frame. Of the 4 sets of single guide wheels in the lower part of the drive frame, 2 sets are located on the left and right sides of the main chord column tube on the front of the guide frame, and 2 sets are located inside the main chord column tube on the front of the guide frame. The lower 2 sets of double guide wheels are located inside the main chord column tube on the front of the guide frame.

[0008] Preferably, the drive frame and the drive plate are connected by a fully floating connection, the drive gear is mounted on the drive plate, and three back wheels are mounted on the drive plate.

[0009] Preferably, the wall mount includes a mounting plate with internal fasteners installed on it. A tie rod is also installed on the mounting plate, and the tie rod is mounted on the mounting plate by a three-prong nut and a two-prong nut.

[0010] In this utility model, the base is placed on a solid and flat ground. The four corners of the base are adjustable support seats. The top center of the base is equipped with a unit section connector for connecting the guide rail frame. The guide rail frame is composed of multiple unit sections connected together. The guide rail frame is attached to the surface of the building wall by a wall-mounted frame. The bottom of the guide rail frame is connected to the base and is perpendicular to the base. A rack is installed on the front and meshes with the drive gear on the back of the drive device. The guide rail frame is the vertical running track of the lifting platform.

[0011] In this utility model, the driving device includes a driving frame, a driving plate, a fall arrestor, a driving unit, a fall arrestor, a guide wheel, and a safety hook. The driving device is attached to the front of the guide rail frame by the driving frame as a whole, and can move vertically up and down along the guide rail frame. The driving device is also equipped with a high-efficiency audio warning system, which will emit a continuous warning sound when the platform is moving up and down, to warn the workers inside and outside the platform that the platform is in operation and to pay attention to construction safety.

[0012] In this utility model, the wall-mounted frame is a connecting component between the guide rail frame and the building. The wall-mounted frame is an adjustable structure to adapt to different wall thicknesses and the accuracy of the positioning cone. The working platform has an irregular shape, with the outline of the side facing the wall matching the outline of the wall. During installation, it is placed horizontally and fixed on the drive frame of the drive device. The joint between the platform panel and the drive frame is a groove. A detachable safety railing is provided around the perimeter. The working platform has an eccentric structure. The platform is shorter on the side facing the prestressed opening and has a side-opening movable cover at the bottom. The opposite side is the long side. The platform control box and power supply box are suspended from the railing on the long side. The entrance and exit of the working platform are equipped with a railing door and a mechanical and electrical interlocking device for the electrical control system.

[0013] In this utility model, the cable boom is a device for fixing power cables. The cable boom securely fixes the cable in the arc groove of the clamp plate with bolts, which can drive the power cable to rise and fall with the work platform to adapt to different height requirements of the work platform, while maintaining appropriate cable tension to prevent damage to the cable during movement. The cable drum is designed to facilitate the storage and organization of the cable. The center of the cable drum is aligned with the center of the cable boom clamp plate to facilitate the storage and organization of the cable.

[0014] In this utility model, the limiting device consists of a limit touch switch on the drive device and a limit ruler installed on the guide rail frame. The limit ruler is installed on the guide rail frame by a barbed connecting bolt. When the lifting platform moves up and down to the travel limit, the limit touch switch is automatically triggered. After the limit touch switch is triggered, the platform continues to run and will trigger the limit block. After the limit limit switch is triggered, the platform will cut off the power supply. The limit switch is a non-direct reset type and needs to be manually reset.

[0015] In this utility model, the electrical control system includes a platform control box, a power supply box, and a main control cable. The platform control box and the power supply box are bolted together and suspended inside the guardrail of the work platform. The platform control box is the heart of the work platform's electrical control system. It is equipped with an up / down operating contactor, an emergency brake, a control transformer, an overheat protector, and a phase loss and phase sequence protection relay. Externally, it is equipped with a power indicator light, a door limit indicator light, an up / down control knob, a start button, and an emergency stop button. The power supply box has an independent power switch and a circuit breaker. One 380V five-hole power plug and one 220V three-hole power plug are reserved on the right side. The platform control box and the power supply box are designed with protective covers to ensure that the operation panel and power plug are not damaged in the outdoor environment.

[0016] Based on the above solutions, further improvements or preferred solutions include:

[0017] Furthermore, to cope with emergencies such as a sudden power outage, backup batteries can be added to the power supply box. When the main power fails, the backup batteries can immediately provide temporary power support to the platform, ensuring its safe descent to the ground. This improvement effectively prevents dangerous situations such as personnel being trapped in the air due to a sudden power outage causing the platform to stop operating, greatly enhancing the safety of platform use.

[0018] Furthermore, the connection between the wall-mounted bracket and the building wall can be achieved using pre-embedded horizontal self-locking slide rails. Compared to traditional pre-embedded positioning cones, this slide rail method offers significant advantages. It improves the installation efficiency of the wall-mounted bracket and reduces installation time. Simultaneously, during the pre-embedding process, this method provides higher precision redundancy, effectively reducing errors caused by inaccurate pre-embedding, thereby further enhancing the stability and reliability of the connection between the guide rail bracket and the building, ensuring the safety of the platform during lifting.

[0019] Furthermore, the lubrication system for the drive gear and rack is improved. To reduce wear between the drive gear and rack, extend their service life, and reduce operating noise, the lubrication system of the drive unit is optimized. Automatic lubrication devices, such as timed and metered oil injectors or grease distributors, can be installed near the drive gear and rack. This device can automatically spray the appropriate amount of lubricating oil or grease onto the meshing parts of the gear and rack based on the platform's operating time or number of runs, ensuring good lubrication under various operating conditions. In addition, lubricants with better anti-wear and extreme pressure properties are selected to further improve lubrication, reduce energy loss, and make the drive unit operate more smoothly and efficiently.

[0020] Furthermore, a manual descent device is added to the upper part of the work platform. This device mainly consists of a manual operating lever and a deceleration mechanism. In the event of a power system failure, the operator can manually control the platform to descend slowly, ensuring the safe evacuation of personnel.

[0021] Furthermore, the shape and openings of the work platform can be optimized according to the user's specific requirements to adapt to different working environments and needs.

[0022] Beneficial Effects: This utility model's flattened lifting work platform, when used in prestressed construction operations, allows the drive device, controlled by the platform control box, to move up and down along the guide rail frame. This enables prestressed construction workers to be positioned at any height of the pre-embedded pipe opening on the side of the buttress column. Compared to erecting a full-span scaffolding platform at once or suspending multiple layers of scaffolding platforms, this utility model's platform is much simpler to install, dismantle, and operate. It significantly reduces the time consumed by traditional platform installation and dismantling, improves work efficiency, and offers higher safety. In summary, compared to traditional prestressed construction auxiliary platforms, this utility model has the advantages of convenient installation and dismantling, easy operation, high efficiency, low cost, and good safety performance. It effectively reduces the consumption of manpower, material resources, and working hours, and better meets the increasingly demanding construction requirements. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of a flattened lifting work platform according to the present invention.

[0024] Figure 2 This is a schematic diagram of the base structure of a flattened lifting work platform according to the present invention.

[0025] Figure 3 This is a schematic diagram of the guide rail frame structure of a flat lifting work platform according to the present invention.

[0026] Figure 4 This is a schematic diagram of the drive device structure of a flattened lifting work platform according to the present invention.

[0027] Figure 5 This is a schematic diagram of the wall-mounted frame structure of a flat lifting work platform according to this utility model.

[0028] Figure 6 This is a schematic diagram of the working platform structure of a flat lifting work platform according to the present invention.

[0029] Figure 7 This is a schematic diagram of the limit ruler structure of a flat lifting work platform according to this utility model.

[0030] Figure 8 This is a front view of a flattened lifting work platform according to the present invention. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] like Figures 1 to 8 As shown, the flat lifting work platform of this utility model is mainly composed of a base 1, a guide rail frame 2, a drive device 4, a wall-mounted frame 9, a work platform 5, a cable arm, a cable drum 11, a limit device 3, and an electrical control system 8.

[0033] like Figure 1 As shown, the base 1 is placed on a solid, flat surface or platform to ensure it can withstand the weight and working load of the entire equipment. Adjustable support seats 13 are located at the four corners of the base 1. The levelness of the base is adjusted by rotating screws to ensure the perpendicularity of the base 1 to the guide rail frame 2 meets the requirements. After ensuring the base 1 is stable, the guide rail frame unit section connector 12 installed at the top center is used to connect with the guide rail frame 2, providing basic support and positioning for the subsequent installation of the guide rail frame 2.

[0034] In this example, the guide rail frame 2 is composed of multiple unit sections 14, each 1508mm in length, connected by hexagonal bolts. Each unit section is welded from seamless steel pipes, angle steel, and steel pipes, and features a replaceable rack 15 on the front, secured with three internal hexagonal screws. The rack is also equipped with cylindrical pins for accurate positioning during installation. The four main chord column tubes 35 of each unit section 14 have raised and recessed stop structures welded to their upper and lower ends for quick and precise positioning and connection of the unit sections 14. During the assembly of the guide rail frame 2, it is necessary to apply grease to the joints of the column tubes 35 to prevent rust and to clean any debris from the joints and both ends of the rack 15. The assembled guide rail frame 2 is then connected to the base 1 at the bottom and attached to the building wall surface via the wall mount 9. The guide rail frame 2 remains perpendicular to the base, providing a running track for the lifting platform. When the installation height of guide rail frame 2 exceeds 3m, the first set of wall-mounted brackets 9 should be installed. The height of wall-mounted bracket 9 from the ground is approximately 2.5m. Subsequently, a set of wall-mounted brackets 9 should be installed every 1.5-6m. A set of wall-mounted brackets 9 should also be installed when guide rail frame 2 reaches its maximum height. When installing wall-mounted brackets 9, first connect them to the main chord column pipe 35 of the unit section at the installation height using internal fasteners 28. Then, connect the back plate 27 of the wall-mounted bracket to the pre-embedded iron cone 29 inside the building using high-strength tie rods 30 and screw in and tighten the three-prong nut 31 and two-prong nut 32. After the guide rail frame 2 is installed, after measuring its verticality with a theodolite (or plumb line) and confirming it is within the relative error range of the installation height, tighten all connecting parts. Wall-mounted brackets 9 should be installed horizontally, and their heightening should be synchronized with the heightening of unit section 14.

[0035] The drive unit 4 comprises a drive frame 19, a drive plate 18, a fall arrestor 21, a drive unit 24, a fall arrestor 26, single guide wheels 22, double guide wheels 16, and a safety hook 20. The drive frame 19 is welded from sheet metal and profiles, fixing and supporting the drive transmission mechanism and the fall arrestor 26, and bearing the platform load. Six sets of single guide wheels 22 and four sets of double guide wheels 16 are fixed on the drive frame. The guide wheels are equipped with eccentric shafts and rolling bearings, which can be adjusted independently. The relative position of the drive unit 4 and the guide rail frame 2 is controlled by adjusting the eccentric shafts. The drive plate 18 is used to connect the drive unit 24 and the drive frame 18. Three back wheels 17 are mounted on the back. Adjusting the eccentric sleeves of the back wheels can adjust the clearance between the back wheels 17 and the rack 15, ensuring that the drive gear 36 meshes correctly with the rack 15. The drive plate 18 and the drive frame 18 adopt a fully floating connection to reduce the impact of platform operation. The drive unit 24 consists of a TYHI100L1-7 type three-phase brake motor for lifting, a disc electromagnetic brake, a helical gear reducer, and a drive gear 36. The motor brake electromagnet can automatically track and adjust, and the braking torque is adjustable. The reducer has the advantages of compact structure. After the power is reduced and the torque is increased by the reducer, it is transmitted to the drive gear 36, which meshes with the rack 15 on the guide rail frame 2, realizing the vertical lifting and lowering of the drive frame and the work platform along the guide rail. The fall arrestor 26 is a SAJ30-0.5 type, fixed on the fall arrestor plate 21. Its fall arrestor gear 37 meshes with the rack 15 on the guide rail frame. When the platform falls at excessive speed, the centrifugal block inside the safety device drives the brake cone drum to rotate, so that the brake cone drum contacts the conical shell to generate friction to stop the platform. At the same time, it breaks the interlocking micro switch to cut off the control power supply, ensuring the safety of personnel and equipment. The operating speed of the fall arrestor 26 is set at the factory and must not be turned on by the user. After activation, it must be reset according to regulations. The calibration cycle is one year, and it should be sent to the manufacturer or testing institution for re-calibration after the calibration period expires. A high-strength alloy safety hook 20 is installed on each of the upper and lower sides of the drive frame 19, and is fixed to the drive frame 19 with high-strength bolts. In the event of accidental detachment of the single and double guide wheels (22, 16), it remains connected to the guide rail column 14 to prevent the drive device 4 from tipping over. When installing the drive device 4, it is attached to the front of the guide rail frame as a whole. Each component is tested to ensure that the single and double guide wheels (22, 16), drive gear 36, fall arrestor 26, etc., are working properly. The clearance between the single and double guide wheels (22, 16) and back wheel 17 is adjusted to allow the drive device 4 to move smoothly up and down along the guide rail frame 2.

[0036] The work platform 5 is welded from profiles, checkered plates, and folded plates, with an irregular shape. Its side profile against the wall conforms to the wall and guide rail frame 2. The work platform 5 is horizontally placed and fixed on the drive frame 19 of the drive unit 4, with its bottom secured by eight hexagonal bolts. Guardrail posts with pins are installed around the upper perimeter of the work platform 5. Customized guardrail posts 6 are inserted into the pins and secured with bolts. An inward-opening entrance / exit guardrail door 7 is installed on the long side of the work platform 5, while a movable side-opening cover plate 33 is installed on the bottom platform surface of the short side. The entrance / exit guardrail door 7 is a manually operated sliding door, with a mechanical and electrical interlock device installed at the door lock. When the door is opened, the platform's electrical control system 8 automatically cuts off power to ensure personnel safety. During installation, the work platform 5 is lifted onto the main beam 38 of the drive frame using a mobile crane (or tower crane), and secured with high-strength bolts and nuts. The guardrail 6 and entrance / exit guardrail door 7 are then installed.

[0037] The cable boom 34 secures the power cable to the arc groove of the clamp plate with bolts, allowing the cable to move up and down with the platform. During installation, ensure the center of the cable drum 11 aligns with the center of the clamp plate to maintain appropriate cable tension and prevent damage during movement. The cable drum 11 is a cylindrical structure with a triangular base welded to the bottom. Cable inlets and outlets are located at both ends of the drum for loading and unloading the main cable. When the platform rises and falls, it moves the cable inside the drum, preventing it from scattering and being crushed on the ground. The cable boom 34 is installed under the platform, with the cable drum 11 positioned directly below it.

[0038] The limit device consists of a limit contact switch mounted on the anti-fall plate 21 of the drive unit and a limit ruler on the guide rail 2. The upper travel limit block and the upper limit stop block are bolted to the limit ruler to form an upper limit ruler assembly 39, fixed to the top of the guide rail 2; the lower travel limit block and the lower limit stop block form a lower limit ruler assembly 3, fixed to the bottom of the guide rail 2. When the drive unit 4 reaches the designated upper or lower position, it touches the limit block, automatically cutting off the power and stopping operation. If the limit switch malfunctions, the drive unit 4 continues to run, triggering the limit stop block. The limit stop switch cuts off the main power to stop the drive unit 4, preventing it from hitting the top or bottom. The limit switch is not self-resetting and requires manual reset. When installing the limit device, the positions of the blocks should be adjusted to ensure accurate contact of each switch action, and its accuracy and reliability should be repeatedly tested and verified.

[0039] The electrical control system 8, comprising a platform control box, a power supply box, and main control cables, is the platform control component, directing all platform actions. The platform control box internally houses up / down contactors, an emergency brake, a control transformer, an overheat protector, and phase loss and phase sequence protection relays. Externally, it features power indicator lights, door limit indicator lights, up / down control knobs, a start button, and an emergency stop button. The power supply box has an independent power switch and circuit breaker, with one 380V five-hole power plug and one 220V three-hole power plug pre-installed on the right side, and is equipped with a protective cover. The platform control box and power supply box are bolted together and suspended inside the work platform railing 6. During installation, ensure correct connection of all component wiring and the drive unit junction box 25, ensuring a reasonable layout of electrical components within the control box and protecting the control panel and power plug from outdoor environmental damage.

[0040] After completing the above installation, equipment debugging is performed. Power is connected to the electrical control system 8 of the work platform and test-run it. Jog the up and down movements to check for accuracy. First, check the lower limit assembly to ensure the platform's bottom-out protection function is normal. Its installation position should ensure that when the fully loaded platform is moving downwards, the switch automatically cuts off the control power after touching the limit block of the lower limit ruler assembly 3. When stopping, the distance from the bottom of the platform to the ground buffer spring 40 should be 150-200mm. The lower limit block should activate after the lower limit switch is activated, and the platform should not collide with the buffer spring. Next, check the upper limit assembly to ensure the platform's anti-overshoot protection function is normal. Its installation position should ensure that when the fully loaded platform is moving upwards, the switch automatically cuts off the control power after touching the limit block of the upper limit ruler assembly 39. The upper limit block should activate after the upper limit switch is activated, and the platform should not collide with the anti-overshoot device 10. After adjusting the limit devices, adjust the clearances of the single guide wheels 22, double guide wheels 16, and back wheels 17, as well as the meshing clearance between the drive gear 36 and the rack 15, to ensure smooth platform operation. After the equipment is debugged and confirmed to be working correctly, a load test and a drop test are conducted on the eccentric lifting platform. During the drop test, no one is allowed to be inside the platform. The purpose of the test is to ensure that the fall arrestor 26 reliably stops the platform. After the test, the fall arrestor 26 is reset. During equipment debugging, the braking performance of the motor brake, the operation of the electrical system, the sensitivity of the safety limit switches, and the lubrication of various parts are checked to ensure the normal operation of the equipment.

[0041] Based on the above-mentioned flat lifting work platform and installation method, a circumferential prestressed construction method is implemented, which includes controlling the flat lifting work platform to move up and down along the vertical direction of the guide rail frame. After reaching the designated position, it provides a work platform for the construction workers to perform the threading, tensioning, grouting and anchoring of the circumferential prestressing tendons, and to assist in the circumferential prestressed construction work.

[0042] The above steps describe in detail how to implement and use the flattened lifting work platform and its installation method according to this utility model, including the implementation of the installation and construction methods for each component. These steps ensure that the platform has advanced technical performance, safe and reliable use, and convenient installation, dismantling, and maintenance, meeting the needs of modern high-altitude operations.

[0043] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A flat lift work platform characterized by: The system includes a base, a guide rail frame, a drive unit, a wall-mounted bracket, and a work platform. The base is located on a solid, flat ground or platform. Adjustable supports are provided at the four corners of the base. The base is connected to the guide rail frame via connectors. The guide rail frame consists of several unit sections. The upper and lower ends of the four main chord column tubes of each unit section are welded with concave-convex stop structures. The guide rail frame is attached to the surface of the building wall via the wall-mounted bracket. The drive unit includes a drive frame, a drive motor, a fall arrestor, a single guide wheel, a double guide wheel, and a safety hook. The drive frame is welded from plates and profiles. The single and double guide wheels are both mounted on the drive frame and are respectively attached to the column tubes. The drive platform moves along the column tube, and a drive motor is installed on the drive frame. The drive motor is connected to the drive gear, and a rack is installed on the guide rail frame. The drive gear meshes with the rack, and the drive motor drives the drive frame to move along the guide rail frame. The safety hook is installed on the drive frame by bolts. The column tube is located between the safety hook and the drive frame. The fall arrestor is installed on the drive frame, and the gear of the fall arrestor meshes with the rack. The drive frame is equipped with a main beam, and the working platform is located on the main beam. The drive frame is equipped with a limit touch switch, and limit rulers are provided at the upper and lower ends of the guide rail frame. The limit touch switch and the limit rulers work together to achieve the limiting purpose.

2. The flatbed lift platform of claim 1, wherein: The base is equipped with a buffer spring via a screw, and the distance between the buffer spring and the lower limit position of the drive frame is 150-200mm.

3. The flatbed lift platform of claim 1, wherein: The guide rail frame is composed of interconnected unit sections, which are welded from seamless steel pipes, angle steel, and steel pipes. The front is equipped with a rack, which is fastened with three internal hexagonal screws. The upper and lower ends of the four main chord column tubes of the unit section are welded with concave and convex stop structures, which can be precisely installed and aligned during connection. After alignment and connection, they are connected by high-strength hexagonal connecting bolts. The top of the guide rail frame has an anti-impact structure.

4. The flattened lifting work platform according to claim 1, characterized in that: The drive frame has a total of 6 sets of single guide wheels and 4 sets of double guide wheels. The upper part of the drive frame has 2 sets of single guide wheels, which are located on the left and right sides of the main chord column tube on the front of the guide frame, respectively. The upper 2 sets of double guide wheels are located inside the main chord column tube on the front of the guide frame. Of the 4 sets of single guide wheels at the bottom of the drive frame, 2 sets are located on the left and right sides of the main chord column tube on the front of the guide frame, and 2 sets are located inside the main chord column tube on the front of the guide frame. The lower 2 sets of double guide wheels are located inside the main chord column tube on the front of the guide frame.

5. The flattened lifting work platform according to claim 1, characterized in that: The drive frame and the drive plate are connected by a fully floating connection. The drive gear is mounted on the drive plate, and three back wheels are mounted on the drive plate.

6. The flattened lifting work platform according to claim 1, characterized in that: The wall mount includes a mounting plate with internal fasteners installed on it. A tie rod is also installed on the mounting plate, and the tie rod is mounted on the mounting plate by a three-prong nut and a two-prong nut.

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