A ladder with automatic straightening step function

Abstract

The present invention discloses a ladder with an automatic step-straightening function, comprising a mounting platform, a displacement device and a straightening ladder frame device are provided on the mounting platform; a mounting tripod is fixedly connected to one side of the mounting platform, a transfer frame is provided on the other side of the mounting platform, a counterweight frame is fixedly connected to the transfer frame at a position away from the mounting platform, a fixed ladder frame is fixedly connected to the counterweight frame and the transfer frame at a position on one side, and a support shaft is rotatably connected to the counterweight frame at a position away from the fixed ladder frame. Through the cooperation of the displacement device, the straightening ladder frame device, the auxiliary lifting device, the auxiliary traction device and the overall transfer device, the ladder can automatically adjust the step level when the relative position between the oil tank top and the floating roof changes, the safety of personnel walking on the ladder is guaranteed, it is convenient for personnel to walk and operate on it, and it can be quickly positioned, installed and transferred.

Description

Technical Field

[0001] The invention relates to the field of petrochemical industry, and in particular to a ladder with an automatic straightening step function. Background Art

[0002] In the petrochemical industry, floating roof storage tanks require the use of rotating escalators to connect the floating roof and the tank top, so that personnel can go up and down between the floating roof and the tank top. However, many rotating escalators currently in use are single-pull rod structures, which are not easy to ensure the level of the escalator footrest as the floating roof rises and falls, making it difficult for personnel to move and operate on them. They are also slippery and very dangerous. In addition, large-scale lifting equipment is required to operate the current escalators when they are positioned, installed, and transferred, resulting in very low efficiency in positioning, installation, and transfer, affecting the efficiency of oil production and processing.

[0003] Therefore, a ladder with an automatic horizontal step function is proposed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a ladder with an automatic step-straightening function. Through the cooperation of a displacement device, a straightening ladder frame device, an auxiliary lifting device, an auxiliary traction device and an overall transfer device, the ladder can automatically adjust the step level when the relative position between the oil tank top and the floating roof changes. The safety of personnel is guaranteed when they travel on the ladder, which is convenient for personnel to travel and operate on it, and can be quickly positioned, installed and transferred.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a ladder with an automatic step-straightening function, comprising a mounting platform, wherein a displacement device and a ladder-straightening device are provided on the mounting platform;

[0006] A mounting tripod is fixedly connected to one side of the mounting platform, a transfer frame is provided on the other side of the mounting platform, a counterweight frame is fixedly connected to the transfer frame at a position away from the mounting platform, a fixed ladder frame is fixedly connected to the counterweight frame and one side of the transfer frame, a support shaft is rotatably connected to the counterweight frame at a position away from the fixed ladder frame, a climbing frame is fixedly connected to the support shaft, and a mounting plate is rotatably connected to the climbing frame at a position away from the support shaft;

[0007] A displacement device is provided at a position of the transfer frame between the installation platforms, and the displacement device is used for displacement of the transfer frame;

[0008] A straight ladder frame device is provided between the climbing frames, the straight ladder frame device is connected to the counterweight frame, and the straight ladder frame device is used to build an automatically straight traveling platform.

[0009] As a further improvement of the present invention, the displacement device includes a first rotating shaft, which is rotatably connected to the transfer frame at a position between the installation platforms, a transfer wheel group is fixedly connected to the first rotating shaft, and the transfer wheel group is located in the installation platform, the transfer frame is fixedly connected to brackets on both sides near the first rotating shaft, and the brackets are rotatably connected to a balancing wheel group at a position near one side of the installation platform, and the balancing wheel group is located in the installation platform.

[0010] As a further improvement of the present invention, the straight ladder frame device includes a fixed frame, the fixed frame is fixedly connected between the climbing frames, the fixed frame is evenly provided with connecting shafts, the connecting shafts are rotatably installed between the fixed frames, the connecting shafts are fixedly connected with ladder platforms, a linkage mechanism is provided between the fixed frame and the counterweight frame, and the linkage mechanism is connected to the ladder platform.

[0011] As a further improvement of the present invention, the linkage mechanism includes a linkage shaft, which is rotatably connected to the counterweight frame at a position near the support shaft, a transmission rod is fixedly connected to the linkage shaft, a connecting rod is rotatably connected between the transmission rod and the fixed frame at a position near the mounting plate, support rods are evenly distributed on the transmission rod, the support rods are rotatably installed on the transmission rod, and the transmission rods are respectively fixedly connected to adjacent platforms, and a parallelogram structure is formed between one end of the fixed frame near the mounting plate, the support shaft, both ends of the connecting rod and the linkage shaft.

[0012] As a further improvement of the present invention, it also includes an auxiliary lifting device, which is arranged between the climbing frame and the transfer frame. The auxiliary lifting device is used to make the climbing frame rise and fall quickly. A first moving pair is fixedly connected to the transfer frame at a position near one side of the climbing frame, and a support sleeve is fixedly connected to the moving part of the first moving pair. A first hydraulic press is fixedly connected to the transfer frame near the position of the first moving pair, and the moving part of the first hydraulic press is connected to the support sleeve. A support mechanism is provided between the support sleeve and the climbing frame.

[0013] As a further improvement of the present invention, the supporting mechanism includes a supporting frame, the supporting frame is sleeved in the supporting sleeve, a scale frame is sleeved on the other side of the supporting sleeve, a connecting seat is fixedly connected between the scale frame and the support frame at a side away from the supporting sleeve, and the connecting seat is connected to the climbing frame.

[0014] As a further improvement of the present invention, it also includes an auxiliary traction device, which is arranged between the displacement device and the installation platform, and is used for rapid left and right displacement of the transfer frame. A second rotating shaft is rotatably connected between the brackets, and a first gear transmission assembly is connected between the second rotating shaft and the balancing wheel group, and the first gear transmission assembly is a bevel gear transmission. The shaft connection of the balancing wheel group is fixedly connected with a transmission gear, and a rack is fixedly connected to the installation platform at a position near one side of the transmission gear, and the rack cooperates with the transmission gear. A driving motor is fixedly connected to one side of the bracket, and a second gear transmission assembly is connected between the output shaft of the driving motor and the second rotating shaft, and the second gear transmission assembly is a bevel gear transmission.

[0015] As a further improvement of the present invention, it also includes an overall transfer device, the number of which is at least four groups, and the overall transfer devices are respectively arranged on the mounting platforms, at least four groups of eight second moving pairs are fixedly connected at the positions between the mounting platforms, and a moving frame is fixedly connected between the moving parts of each group of the second moving pairs, and a second hydraulic press is fixedly connected at a position on one side of the mounting platform near the moving parts, and the moving parts of the second hydraulic press are connected to the moving frame, and a universal wheel group is rotatably connected to the other side of the moving frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention adopts a method of installing the mounting plate on the floating roof. When the floating roof is raised or lowered, the mounting plate and the climbing frame are driven to rotate through the support shaft, and the climbing frame is positioned through the transfer frame. This method can keep the climbing frame stable when the floating roof is raised or lowered, and avoid the climbing frame being pulled and reducing its mechanical strength. In addition, by setting a fixed ladder frame, personnel do not need to climb the mounting platform and the climbing frame.

[0018] 2. The present invention adopts a method of forming a parallelogram structure between one end of the fixed frame near the mounting plate, the support shaft, the two ends of the connecting rod and the linkage shaft, so that the ladder platform can automatically adjust when the climbing frame and the mounting plate are lifted or lowered, so that the ladder platform can automatically maintain a level, so that personnel can operate and walk on the ladder platform, and the safety of personnel walking on it is guaranteed.

[0019] 3. The present invention adopts an auxiliary lifting device to enable the climbing frame to be quickly lifted and displaced, so that the climbing frame and the mounting plate can be quickly transported to the floating roof or quickly transferred from the floating roof, which is convenient for installation, does not require large-scale lifting equipment, and saves costs; and when the climbing frame and the mounting plate are lifted and lowered with the floating roof, the support sleeve, the support frame and the scale frame will enable the climbing frame to be arbitrarily displaced, and the displacement of the climbing frame can be observed through the scale frame.

[0020] 4. The present invention uses an auxiliary traction device to quickly displace the transfer frame, so that the installation plate and the climbing frame can be quickly positioned at the floating roof displacement position, avoiding the use of manual traction or large lifting equipment, so that the efficiency of the preparation process can be increased when using the ladder.

[0021] 5. The present invention can quickly transfer the ladder by providing an integral transfer device, and still does not require large-scale lifting equipment to work, thereby improving work production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0023] Figure 2 This is a schematic diagram of the first partial main structure of the present invention.

[0024] Figure 3 This is a schematic diagram of a second partial main view structure of the present invention.

[0025] Figure 4 It is a schematic diagram of the top structure of the present invention.

[0026] Figure 5 It is a schematic diagram of the main structure of the displacement device part of the present invention.

[0027] Figure 6 It is a schematic diagram of the first front view structure of the straight ladder frame device part of the present invention.

[0028] Figure 7 It is a second front view structural schematic diagram of the straight ladder frame device part of the present invention.

[0029] Figure 8 It is a schematic diagram of the main structure of the auxiliary lifting device part of the present invention.

[0030] Fig. 9 It is a schematic diagram of the main structure of the supporting mechanism part of the present invention.

[0031] Fig.10 It is a schematic diagram of the main structure of the overall transfer device of the present invention.

[0032] In the figure: 1-installation platform, 2-installation tripod, 3-transfer frame, 4-counterweight frame, 5-fixed ladder frame, 6-support shaft, 7-climbing frame, 71-installation plate, 8-displacement device, 9-straight ladder frame device, 81-first rotating shaft, 82-transfer wheel set, 83-bracket, 84-balance wheel set, 91-fixed frame, 92-connecting shaft, 93-ladder platform, 10-linkage mechanism, 101-linkage shaft, 102-transmission rod, 103-connecting rod, 104-support rod, 12-auxiliary lifting device, 121 -first moving pair, 122-support sleeve, 123-first hydraulic pressure, 13-support mechanism, 131-support frame, 132-scale frame, 133-connecting seat, 14-auxiliary traction device, 141-second rotating shaft, 142-first gear transmission assembly, 143-transmission gear, 144-rack, 145-drive motor, 146-second gear transmission assembly, 15-integral transfer device, 151-second moving pair, 152-moving frame, 153-second hydraulic pressure, 154-universal wheel set. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] It should be noted that when an element is referred to as being "fixed", "mounted", "connected" or "disposed" with another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation in the specification, and therefore cannot be understood as limiting the present invention.

[0035] As a further improvement of the present invention, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0036] See also Figure 1-10 , the present invention provides a technical solution: a ladder with automatic straightening step function, comprising a mounting platform 1, on which a displacement device 8 and a straightening ladder frame device 9 are provided;

[0037] A mounting tripod 2 is fixedly connected to one side of the mounting platform 1, a transfer frame 3 is provided on the other side of the mounting platform 1, a counterweight frame 4 is fixedly connected to the transfer frame 3 at a position away from the mounting platform 1, a fixed ladder frame 5 is fixedly connected to the counterweight frame 4 and the transfer frame 3 at a position on one side, a support shaft 6 is rotatably connected to the counterweight frame 4 at a position away from the fixed ladder frame 5, a climbing frame 7 is fixedly connected to the support shaft 6, and a mounting plate 71 is rotatably connected to the climbing frame 7 at a position away from the support shaft 6;

[0038] A displacement device 8 is provided at a position of the transfer frame 3 between the installation platforms 1, and the displacement device 8 is used for displacement of the transfer frame 3;

[0039] A straight ladder frame device 9 is provided between the climbing frames 7, and the straight ladder frame device 9 is connected to the counterweight frame 4. The straight ladder frame device 9 is used to build an automatic straight traveling platform.

[0040] By installing the mounting plate 71 on the floating roof, the mounting plate 71 and the climbing frame 7 will be driven to rotate through the support shaft 6 when the floating roof is raised or lowered, and the climbing frame 7 will be positioned through the transfer frame 3. This allows the climbing frame 7 to remain stable when the floating roof is raised or lowered, thereby preventing the climbing frame 7 from being pulled and reducing its mechanical strength. In addition, by providing a fixed ladder frame 5, personnel do not need to climb the mounting platform 1 and the climbing frame 7.

[0041] In some embodiments of the present invention, the displacement device 8 includes a first rotating shaft 81, which is rotatably connected to the transfer frame 3 at a position between the installation platform 1, and a transfer wheel group 82 is fixedly connected to the first rotating shaft 81, and the transfer wheel group 82 is located in the installation platform 1. The transfer frame 3 is fixedly connected to brackets 83 on both sides near the first rotating shaft 81, and the bracket 83 is rotatably connected to a balancing wheel group 84 at a position near one side of the installation platform 1, and the balancing wheel group 84 is located in the installation platform 1.

[0042] In some embodiments of the present invention, the straight ladder frame device 9 includes a fixed frame 91, the fixed frame 91 is fixedly connected between the climbing frames 7, the fixed frame 91 is evenly distributed with connecting shafts 92, the connecting shafts 92 are rotatably installed between the fixed frames 91, and the connecting shafts 92 are fixedly connected with ladder platforms 93. A linkage mechanism 10 is provided between the fixed frame 91 and the counterweight frame 4, and the linkage mechanism 10 is connected to the ladder platforms 93.

[0043] In some embodiments of the present invention, the linkage mechanism 10 includes a linkage shaft 101, which is rotatably connected to the counterweight frame 4 at a position near the support shaft 6, and a transmission rod 102 is fixedly connected to the linkage shaft 101. A connecting rod 103 is rotatably connected between the transmission rod 102 and the fixed frame 91 at a position near the mounting plate 71. Support rods 104 are evenly distributed on the transmission rod 102, and the support rods 104 are rotatably installed on the transmission rod 102, and the transmission rod 102 is fixedly connected to adjacent platforms 93 respectively. A parallelogram structure is formed between one end of the fixed frame 91 near the mounting plate 71, the support shaft 6, both ends of the connecting rod 103 and the linkage shaft 101.

[0044] By adopting a parallelogram structure formed between one end of the fixed frame 91 near the mounting plate 71, the support shaft 6, the two ends of the connecting rod 103 and the linkage shaft 101, the ladder platform 93 can be automatically adjusted when the climbing frame 7 and the mounting plate 71 are lifted or lowered, so that the ladder platform 93 can automatically maintain a level state, allowing personnel to operate and walk on the ladder platform 93, and the safety of personnel walking on it is guaranteed.

[0045] In some embodiments of the present invention, an auxiliary lifting device 12 is further included, and the auxiliary lifting device 12 is arranged between the climbing frame 7 and the transfer frame 3. The auxiliary lifting device 12 is used to make the climbing frame 7 rise and fall quickly. A first moving pair 121 is fixedly connected to the transfer frame 3 at a position near one side of the climbing frame 7, and a support sleeve 122 is fixedly connected to the moving part of the first moving pair 121. A first hydraulic machine 123 is fixedly connected to the transfer frame 3 near the first moving pair 121, and the moving part of the first hydraulic machine 123 is connected to the support sleeve 122. A support mechanism 13 is provided between the support sleeve 122 and the climbing frame 7.

[0046] In some embodiments of the present invention, the support mechanism 13 includes a support frame 131, the support frame 131 is sleeved in the support sleeve 122, a scale frame 132 is sleeved on the other side of the support sleeve 122, a connecting seat 133 is fixedly connected between the scale frame 132 and a side of the support frame 131 away from the support sleeve 122, and the connecting seat 133 is connected to the climbing frame 7.

[0047] By adopting the auxiliary lifting device 12 to enable the climbing frame 7 to be quickly lifted and displaced, the climbing frame 7 and the mounting plate 71 can be quickly transported to the floating roof or quickly transferred from the floating roof, which is convenient for installation, does not require large-scale lifting equipment, and saves costs; and when the climbing frame 7 and the mounting plate 71 are lifted and lowered with the floating roof, the support sleeve 122, the support frame 131 and the scale frame 132 will enable the climbing frame 7 to be displaced arbitrarily, and the displacement of the climbing frame 7 can be observed through the scale frame 132.

[0048] In some embodiments of the present invention, an auxiliary traction device 14 is further included, and the auxiliary traction device 14 is arranged between the displacement device 8 and the installation platform 1. The auxiliary traction device 14 is used for rapid left and right displacement of the transfer frame 3. A second rotating shaft 141 is rotatably connected between the brackets 83, and a first gear transmission assembly 142 is connected between the second rotating shaft 141 and the balancing wheel group 84. The first gear transmission assembly 142 is a bevel gear transmission. The shaft connection of the balancing wheel group 84 is fixedly connected with a transmission gear 143. A rack 144 is fixedly connected to the installation platform 1 at a position near one side of the transmission gear 143, and the rack 144 cooperates with the transmission gear 143. A driving motor 145 is fixedly connected to one side of the bracket 83, and a second gear transmission assembly 146 is connected between the output shaft of the driving motor 145 and the second rotating shaft 141, and the second gear transmission assembly 146 is a bevel gear transmission.

[0049] By using the auxiliary traction device 14 to quickly displace the transfer frame 3, the mounting plate 71 and the climbing frame 7 can be quickly moved to the floating roof displacement position, avoiding the use of manual traction or large lifting equipment, thereby increasing the efficiency of the preparation process when using the ladder.

[0050] In some embodiments of the present invention, an overall transfer device 15 is further included, and the number of the overall transfer device 15 is at least four groups. The overall transfer devices 15 are respectively arranged on the installation platforms 1, and at least four groups of eight second moving pairs 151 are fixedly connected at positions between the installation platforms 1. A moving frame 152 is fixedly connected between the moving parts of each group of the second moving pairs 151. A second hydraulic machine 153 is fixedly connected at a position on one side of the installation platform 1 near the moving parts, and the moving parts of the second hydraulic machine 153 are connected to the moving frame 152. The other side of the moving frame 152 is rotatably connected with a universal wheel group 154.

[0051] By providing an integral transfer device 15, the ladder can be quickly transferred without requiring large-scale lifting equipment to operate, thereby improving work production efficiency.

[0052] Working principle: the ladder can be placed between the oil tank top platform and the floating roof, and the mounting bracket 2 is installed on the tank top, and the climbing frame 7 and the mounting plate 71 are transported to the floating roof platform through the lifting equipment. During the lifting process of the climbing frame 7, the climbing frame 7 rotates on the counterweight frame 4 through the support shaft 6, and moves on the mounting platform 1 through the displacement device 8; when the floating roof platform moves up and down, the floating roof platform will drive the mounting plate 71 and the climbing frame 7 to rotate through the support shaft 6, and make the transfer frame 3 displace on the mounting platform 1 through the displacement device 8, and at the same time, the straight ladder frame device 9 will also be automatically adjusted due to the relative angle between the climbing frame 7 and the counterweight frame 4, so that the straight ladder frame device 9 can always remain horizontal, and can build an automatically straight traveling platform for people to walk.

[0053] When the counterweight frame 4 and the climbing frame 7 are displaced, the counterweight frame 4 will move on the mounting platform 1 through the transfer wheel set 82 and the balance wheel set 84, so as to support the displacement of the transfer frame 3 and the climbing frame 7.

[0054] When the floating roof platform moves up and down, the mounting plate 71 and the climbing frame 7 will rotate through the supporting shaft 6. The rotation of the climbing frame 7 will drive the fixed frame 91 to rotate. At this time, the linkage mechanism 10 will drive the ladder platform 93 to rotate, so that the ladder platform 93 can rotate through the connecting shaft 92, so that the linkage mechanism 10 drives the ladder platform 93 to automatically level, so that the safety of personnel can be guaranteed when going up and down.

[0055] When the climbing frame 7 drives the fixed frame 91 to rotate through the support shaft 6, the fixed frame 91 will drive the transmission rod 102 to rotate through the linkage shaft 101. Because of the parallelogram structure they constitute, the relative position between the axial connection of the support rod 104 and the connecting shaft 92 changes, so that the support shaft 6 drives the platform 93 to rotate through the connecting shaft 92, so that the platform 93 is automatically leveled.

[0056] The first hydraulic press 123 can be controlled to start, so that the first hydraulic press 123 drives the moving part of the first moving pair 121 and the support sleeve 122 to move left and right, so that the support sleeve 122 drives the climbing frame 7 to rotate around the support shaft 6 through the support mechanism 13, so that the climbing frame 7 and the mounting plate 71 can be quickly transported to the floating roof or quickly transferred from the floating roof, which is convenient for installation, does not require large-scale lifting equipment, and saves costs; and when the climbing frame 7 and the mounting plate 71 are raised and lowered with the floating roof, the support mechanism 13 will enable the climbing frame 7 to be displaced arbitrarily.

[0057] When the climbing frame 7 and the mounting plate 71 are raised and lowered with the floating roof, the climbing frame 7 will drive the connecting seat 133, the supporting frame 131 and the scale frame 132 to move on the supporting sleeve 122, so that the climbing frame 7 can still be raised and lowered with the floating roof, and the displacement of the climbing frame 7 can be observed through the scale frame 132.

[0058] The drive motor 145 can be started, and the drive motor 145 will drive the second rotating shaft 141 to rotate through the second gear transmission assembly 146, thereby driving the balance wheel group 84 and the transmission gear 143 to rotate through the second gear transmission assembly 146, so that the transmission gear 143 rotates on the rack 144, thereby driving the bracket 83 and the transfer frame 3 to move left and right, so that the mounting plate 71 and the climbing frame 7 can be quickly put into place at the floating roof displacement position, avoiding the use of manual traction or large lifting equipment, so that the efficiency of the preparation process can be increased when using the ladder.

[0059] When the ladder needs to be transferred as a whole to another location, the climbing frame 7 can be removed from the floating roof and kept relatively parallel to the mounting platform 1, and the distance between the mounting plate 71 and the mounting platform 1 can be reduced so that the ladder can maintain balance. Subsequently, the mounting bracket 2 can be removed from the top of the oil tank, and the second hydraulic press 153 can be started so that the second hydraulic press 153 drives the moving frame 152 to move downward, so that the moving frame 152 drives the universal wheel set 154 to contact the tank top plane. At this time, the second hydraulic press 153 continues to work, which will make the mounting bracket 2 leave the tank top plane, and then the ladder can be towed through the universal wheel set 154 to move as a whole.

[0060] In summary, through the coordination of the displacement device, the straight ladder frame device, the auxiliary lifting device, the auxiliary traction device and the overall transfer device, the ladder can automatically adjust the levelness of the steps when the relative position between the oil tank top and the floating roof changes, the safety of personnel traveling on the ladder is guaranteed, and it is convenient for personnel to travel and operate on it, and it can be quickly positioned, installed and transferred.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ladder with an automatic step-straightening function, comprising a mounting platform (1), characterized in that: The installation platform (1) is provided with a displacement device (8) and a straight ladder frame device (9); A mounting stand (2) is fixedly connected to one side of the mounting platform (1), a transfer frame (3) is provided on the other side of the mounting platform (1), a counterweight frame (4) is fixedly connected to the transfer frame (3) at a position away from the mounting platform (1), a fixed ladder frame (5) is fixedly connected to the counterweight frame (4) and the transfer frame (3) at a position on one side, a support shaft (6) is rotatably connected to the counterweight frame (4) at a position away from the fixed ladder frame (5), a climbing frame (7) is fixedly connected to the support shaft (6), and a mounting plate (71) is rotatably connected to the climbing frame (7) at a position away from the support shaft (6); A displacement device (8) is provided at a position of the transfer frame (3) between the installation platforms (1), and the displacement device (8) is used for displacement of the transfer frame (3); the displacement device (8) comprises a first rotating shaft (81), the first rotating shaft (81) is rotatably connected to the position of the transfer frame (3) between the installation platforms (1), a transfer wheel group (82) is fixedly connected to the first rotating shaft (81), and the transfer wheel group (82) is located in the installation platform (1); brackets (83) are fixedly connected on both sides of the transfer frame (3) near the first rotating shaft (81), and a balancing wheel group (84) is rotatably connected to the brackets (83) at a position near one side of the installation platform (1), and the balancing wheel group (84) is located in the installation platform (1); A straight ladder frame device (9) is provided between the climbing frames (7), the straight ladder frame device (9) is connected to the counterweight frame (4), and the straight ladder frame device (9) is used to build an automatically straight traveling platform; the straight ladder frame device (9) comprises a fixed frame (91), the fixed frame (91) is fixedly connected between the climbing frames (7), connecting shafts (92) are evenly distributed on the fixed frame (91), the connecting shafts (92) are rotatably installed between the fixed frames (91), and the connecting shafts (92) are evenly fixedly connected to ladder platforms (93); a linkage mechanism (10) is provided between the fixed frame (91) and the counterweight frame (4), and the linkage mechanism (10) is connected to the ladder platforms (93); The linkage mechanism (10) comprises a linkage shaft (101), the linkage shaft (101) being rotatably connected to a position of the counterweight frame (4) near a side of the support shaft (6), a transmission rod (102) being fixedly connected to the linkage shaft (101), a connecting rod (103) being rotatably connected between the transmission rod (102) and a position of the fixed frame (91) near a side of the mounting plate (71), support rods (104) being evenly distributed on the transmission rod (102), the support rods (104) being rotatably mounted on the transmission rod (102), and the transmission rods (102) being fixedly connected to adjacent ladder platforms (93), and a parallelogram structure is formed between one end of the fixed frame (91) near the mounting plate (71), the support shaft (6), two ends of the connecting rod (103) and the linkage shaft (101); The invention also comprises an auxiliary lifting device (12), wherein the auxiliary lifting device (12) is arranged between the climbing frame (7) and the transfer frame (3), and the auxiliary lifting device (12) is used to enable the climbing frame (7) to be lifted or lowered quickly. A first moving pair (121) is fixedly connected to a position in the transfer frame (3) near one side of the climbing frame (7), and a support sleeve (122) is fixedly connected to a moving part of the first moving pair (121). A first hydraulic pressure device (123) is fixedly connected to the transfer frame (3) near the first moving pair (121), and a moving part of the first hydraulic pressure device (123) is connected to the support sleeve (122). A support mechanism (13) is provided between the support sleeve (122) and the climbing frame (7).

2. The ladder with automatic step-straightening function according to claim 1, characterized in that: The support mechanism (13) comprises a support frame (131), the support frame (131) being sleeved in the support sleeve (122), a scale frame (132) being sleeved on the other side of the support sleeve (122), a connecting seat (133) being fixedly connected between the scale frame (132) and a position on a side of the support frame (131) away from the support sleeve (122), and the connecting seat (133) being connected to the climbing frame (7).

3. The ladder with automatic step-straightening function according to claim 1, characterized in that: The auxiliary traction device (14) is provided between the displacement device (8) and the mounting platform (1), and is used for rapidly displacing the transfer frame (3) to the left and right. A second rotating shaft (141) is rotatably connected between the brackets (83), and a first gear transmission assembly (142) is connected between the second rotating shaft (141) and the balancing wheel assembly (84). The first gear transmission assembly (142) is a bevel gear transmission. The balancing wheel assembly (84) is a gear transmission assembly (142). The shaft connection of the bracket (84) is fixedly connected with a transmission gear (143), the mounting platform (1) is fixedly connected with a rack (144) at a position near one side of the transmission gear (143), the rack (144) cooperates with the transmission gear (143), a driving motor (145) is fixedly connected to one side of the bracket (83), a second gear transmission assembly (146) is connected between the output shaft of the driving motor (145) and the second rotating shaft (141), and the second gear transmission assembly (146) is a bevel gear transmission.

4. The ladder with automatic step-straightening function according to claim 1, characterized in that: The invention also comprises an integral transfer device (15), wherein the integral transfer device (15) comprises at least four groups, and the integral transfer devices (15) are respectively arranged on the mounting platforms (1). At least four groups of eight second moving pairs (151) are fixedly connected at positions between the mounting platforms (1), and a moving frame (152) is fixedly connected between the moving parts of each group of the second moving pairs (151). A second hydraulic machine (153) is fixedly connected at a position on one side of the mounting platform (1) near the moving parts, and the moving parts of the second hydraulic machine (153) are connected to the moving frame (152). The other side of the moving frame (152) is rotatably connected to a universal wheel set (154).

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