Mechanical engineering circulating automatic lifting scaffold

Abstract

The utility model relates to the technical field of building construction equipment, in particular to a mechanical engineering circulation automatic lifting scaffold which comprises two bases, a groove is formed in the middle of the upper end of the base on the front side, and a driving device is fixedly connected to the rear groove wall of the groove. A first lifting device is fixedly connected to the left portion of the upper end of the driving device, supporting plates are fixedly connected to the left portions and the right portions of the upper ends of the two bases, a second lifting component is fixedly connected to the front portions and the rear portions of the outer surfaces of the two rotating rods, and a first driving motor is fixedly installed in a groove. According to the circulating automatic lifting scaffold for mechanical engineering, the lifting stability, the power transmission reliability and the operation convenience are improved through the guiding of the sliding blocks and the sliding grooves, the reinforcing structure of the X frame, the reliable belt transmission system and the convenient in-out and moving design.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction equipment, in particular to a mechanical engineering cyclic automatic lifting scaffold. Background Art

[0002] In the process of building construction, scaffolding is an indispensable equipment, which is used to provide construction workers with a working platform and material transportation channels, etc. However, the existing automatic lifting scaffolding still has some problems;

[0003] Some automatic lifting scaffolds are prone to shaking, offsetting, etc. during the lifting process, which not only affects the safety of construction workers, but may also cause safety accidents such as material falling. For example, some scaffolds use a simple rope lifting method, lack an effective guide and stable structure, and are prone to tilting when the load is uneven. The power transmission system of existing automatic lifting scaffolds may have frequent failures. For example, some transmission devices use chain transmission, and the chain is prone to wear and derailment after long-term use, affecting the normal lifting of the scaffold. The maintenance cost is high and the time is long, which seriously affects the construction progress. It is not convenient for operators to enter and exit the scaffolding platform. For example, the door structure design of some scaffolding platforms is unreasonable, which is difficult to open and close, affecting the work efficiency of construction workers. Therefore, we have launched a mechanical engineering cycle automatic lifting scaffold. Utility Model Content

[0004] The main purpose of the utility model is to provide a mechanical engineering cyclic automatic lifting scaffold, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A mechanical engineering cyclic automatic lifting scaffold, comprising a base, two of which are provided, a groove is provided in the middle of the upper end of the front base, a driving device is fixedly connected to the rear groove wall of the groove, a lifting device is fixedly connected to the upper left part of the driving device, and a support plate is fixedly connected to the upper left part and the upper right part of the two bases, and four of the support plates are provided, and the two support plates on the left side and the two support plates on the right side are fixedly connected to a cross plate;

[0007] The driving device includes a first driving motor and a belt, the output end of the first driving motor passes through the front base and is fixedly connected to the main pulley, the main pulley is connected to the first pulley and the second pulley through a belt transmission, the front end middle part of the second pulley and the front end middle part of the first pulley are both interspersed and fixedly connected with a rotating rod, the outer front part and the outer rear part of the two rotating rods are jointly fixedly connected with two lifting components, and the first driving motor is fixedly installed in the groove.

[0008] Preferably, the two lifting components include a retractable rope pulley, four of which are provided, the outer surface of the retractable rope pulley is wound with a lifting rope, the other end of the lifting rope is fixedly connected to a fixed shaft block, the right end of the two fixed shaft blocks on the left and the left end of the two fixed shaft blocks on the right are fixedly connected to a lifting plate, a reinforcement X-frame is fixedly connected between the lower left ends and the lower right ends of the two lifting plates, a sliding block 1 is fixedly connected to the lower front end and the lower rear end of the lifting plates, a front plate wall and a rear plate wall of the two lifting plates are provided with a slide groove 2, four slide grooves 2 are provided, and the retractable rope pulleys are fixedly connected to the front and rear ends of the outer surface of the rotating rod in pairs.

[0009] Preferably, the lifting device includes a second drive motor, the output end of the second drive motor passes through the lifting plate on the left and is fixedly connected to a screw, the outer surface of the screw is movably connected to the supporting frame, and the outer side of the supporting frame is fixedly connected to sliders 2 on all sides, and the front of the left frame wall, the front of the right frame wall and the front of the lower frame wall of the supporting frame are jointly provided with a card slot, and a card door plate is jointly installed in the card slot, and the upper front end of the card door plate is provided with a hand buckle slot, the bottom of the supporting frame is fixedly connected to a resistance layer, and the second drive motor is fixedly installed in the middle of the upper end of the lifting plate on the left.

[0010] Preferably, the left and right lower ends of the two bases are fixedly connected with lockable universal movable wheels, and four lockable universal movable wheels are provided. The upper ends of the two bases are commonly fixedly connected with a plurality of reinforcement frames, the left and right ends of the two bases are commonly fixedly connected with side panels, and the two side panels are symmetrically distributed on the left and right, a cross plate is commonly fixedly connected between the two support plates on the left and the two support plates on the right, the left and right ends of the two cross plates are fixedly connected with side blocks, and the side blocks are symmetrically distributed in pairs, and a slide groove is opened on the inner sides of the four support plates.

[0011] Preferably, the front and rear ends of the two rotating rods are movably connected to the side plates via bearings respectively, and the middle part of the rear end of the main pulley is movably mounted on the middle part of the front end of the rear base via a rotating shaft.

[0012] Preferably, the reinforced X-frame is in an X-shaped structure, and the intersection of the reinforced X-frame is located at the center position between the two lifting plates, the four sliders slide in the slide grooves respectively, and the four retractable rope wheels are grouped in pairs and are respectively located at the front and rear of the outer surface of the rotating rod near the side plates, and the lifting rope is led out from the retractable rope wheel, passes through the side block and extends downward to be fixedly connected to the fixed shaft block.

[0013] Preferably, the bottom of the screw rod is movably connected to the middle of the lower plate wall of the left lifting plate through a bearing, and the four sliding blocks 2 are respectively slidably connected to the sliding grooves 2.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. In the utility model, a slider is provided at the lower part of the front end and the lower part of the rear end of the lifting plate, so that the slider slides in a slide groove on the inner side of the support plate, thereby providing precise guidance for the lifting of the lifting plate and ensuring smooth lifting. At the same time, a reinforced X frame with an X-shaped structure and a cross point located at the center is provided between the two lifting plates, which greatly enhances the overall stability of the lifting plate and effectively avoids shaking and deviation during the lifting process;

[0016] 2. In the utility model, a belt transmission system consisting of a first driving motor, a main pulley, a belt, a first pulley and a second pulley is adopted. This transmission mode is stable and reliable. The middle of the rear end of the main pulley is movably mounted on the middle of the front end of the rear base through a rotating shaft. The front and rear ends of the rotating rod are movably connected to the side plates through bearings, respectively, to ensure the stability of the rotating parts, reduce the probability of failure, and ensure the stable operation of the entire lifting device;

[0017] 3. In the utility model, the load-bearing frame is provided with a card slot and a card door plate. The operator can easily open or close the card door plate through the hand buckle slot on the upper front end of the card door plate, which is convenient for entering and exiting the load-bearing frame. The movement of the scaffolding is achieved by four lockable universal movable wheels arranged on the left and right parts of the lower ends of the two bases. It can be flexibly moved and locked when needed, which greatly improves the convenience of movement of the scaffolding at the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a mechanical engineering cyclic automatic lifting scaffolding of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of a mechanical engineering cyclic automatic lifting scaffold from a top view according to the utility model;

[0020] Figure 3 This is a right-view overall structural diagram of a mechanical engineering cyclic automatic lifting scaffold of the utility model;

[0021] Figure 4 This is a partial structural diagram of a mechanical engineering cyclic automatic lifting scaffolding of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of a driving device for a mechanical engineering cyclic automatic lifting scaffolding according to the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of two lifting components of a mechanical engineering cyclic automatic lifting scaffolding of the utility model;

[0024] Figure 7The utility model is a structural schematic diagram of a lifting device of a mechanical engineering cyclic automatic lifting scaffold.

[0025] In the figure: 1. base; 2. lockable universal movable wheel; 3. reinforcement frame; 4. groove; 5. driving device; 6. side plate; 7. lifting device; 8. support plate; 9. cross plate; 10. side block; 11. slideway one; 51. first driving motor; 52. main leather wheel; 53. belt; 54. first leather wheel; 55. second leather wheel; 56. rotating rod; 57. lifting and lowering parts; 571. retracting rope pulley; 572. lifting rope; 573. fixed shaft block; 574. lifting plate; 575. slideway two; 576. reinforcement X frame; 577. slider one; 71. second driving motor; 72. screw; 73. load-bearing frame; 74. slider two; 75. slot; 76. card door plate; 77. hand buckle slot; 78. resistance layer. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the 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, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] See also Figure 1-7 , the utility model provides a technical solution:

[0030] A mechanical engineering cyclic automatic lifting scaffold, comprising a base 1, two bases 1 are provided, a groove 4 is opened in the middle of the upper end of the front base 1, a driving device 5 is fixedly connected to the rear groove wall of the groove 4, a lifting device 7 is fixedly connected to the upper left part of the driving device 5, a support plate 8 is fixedly connected to the upper left part and the upper right part of the two bases 1, four support plates 8 are provided, and the two support plates 8 on the left side and the two support plates 8 on the right side are fixedly connected to a horizontal plate 9;

[0031] The left and right lower ends of the two bases 1 are fixedly connected with lockable universal movable wheels 2, and four lockable universal movable wheels 2 are provided. The upper ends of the two bases 1 are commonly fixedly connected with a plurality of reinforcement frames 3. The left and right ends of the two bases 1 are commonly fixedly connected with side panels 6, and the two side panels 6 are symmetrically distributed on the left and right sides. A cross plate 9 is commonly fixedly connected between the two support plates 8 on the left and the two support plates 8 on the right. The left and right ends of the two cross plates 9 are fixedly connected with side blocks 10, and the side blocks 10 are symmetrically distributed in pairs. A slide groove 11 is opened on the inner sides of the four support plates 8.

[0032] In this embodiment, the driving device 5 includes a first driving motor 51 and a belt 53. The output end of the first driving motor 51 passes through the base 1 on the front side and is fixedly connected to the main pulley 52. ​​The main pulley 52 is connected to the first pulley 54 and the second pulley 55 through the belt 53. The front middle part of the second pulley 55 and the front middle part of the first pulley 54 are both interspersed and fixedly connected with a rotating rod 56. The front and rear parts of the outer surfaces of the two rotating rods 56 are jointly fixedly connected with a lifting component 57. The first driving motor 51 is fixedly installed in the groove 4. The lifting component 57 includes a retractable rope wheel 571. There are four retractable rope wheels 571. The outer surface of the retractable rope wheel 571 is wound with a lifting rope 572. The other end of the lifting rope 572 is fixedly connected to a fixed shaft block 573. The right ends of the two fixed shaft blocks 573 on the left and the left ends of the two fixed shaft blocks 573 on the right are fixedly connected to a lifting plate 574. The lower left end and the lower right end of the two lifting plates 574 A reinforced X frame 576 is fixedly connected between them. The lower front end and the lower rear end of the lifting plate 574 are fixedly connected with a slider 577. The front and rear walls of the two lifting plates 574 are provided with a slide groove 575. There are four slide grooves 575. The retractable rope wheels 571 are fixedly connected to the front and rear outer surfaces of the rotating rods 56 in pairs. The front and rear ends of the two rotating rods 56 are movably connected to the side plates 6 through bearings. The middle of the rear end of the main pulley 52 is movably connected to the rotating shaft. Installed in the middle of the front end of the base 1 on the rear side, the reinforced X-frame 576 is in an X-shaped structure, and the intersection of the reinforced X-frame 576 is located at the center position between the two lifting plates 574, four sliders 577 slide in the slide groove 11 respectively, and four retractable rope pulleys 571 are grouped in pairs and are respectively located at the front and rear of the outer surface of the rotating rod 56 near the side plate 6. After the lifting rope 572 is led out from the retractable rope pulley 571, it passes through the side block 10 and extends downward to be fixedly connected with the fixed shaft block 573.

[0033] Through the above scheme: when the first driving motor 51 is started, its output end penetrates the front base 1 to drive the main leather wheel 52 to rotate, and the middle of the rear end of the main leather wheel 52 is movably installed in the middle of the front end of the rear base 1 through the rotating shaft to ensure stable rotation. The main leather wheel 52 drives the first leather wheel 54 and the second leather wheel 55 to rotate with the help of the belt 53. Since the middle of the front end of the second leather wheel 55 and the first leather wheel 54 are both inserted and fixedly connected with the rotating rod 56, and the front and rear ends of the two rotating rods 56 are respectively movably connected to the side plate 6 through bearings, the rotating rod 56 rotates accordingly, and the rotating rod 56 Four retractable rope wheels 571 are fixedly connected in pairs at the front and rear of the outer surface, and the retractable rope wheels 571 also rotate accordingly. The outer surface of the retractable rope wheels 571 is wrapped with a lifting rope 572. After the lifting rope 572 is led out from the retractable rope wheels 571, it passes through the side block 10 and extends downward to be fixedly connected to the fixed shaft block 573. As the retractable rope wheels 571 rotate to retract and release the lifting rope 572, the lifting plate 574 connected to the fixed shaft block 573 is lifted and lowered, and the slider 577 at the lower front end and the lower rear end of the lifting plate 574 slides in the slide groove 11 on the inner side of the support plate 8. , ensuring that the lifting plate 574 is lifted and lowered smoothly. At the same time, there is a reinforced X frame 576 between the two lifting plates 574, which is in an X-shaped structure and the intersection is located at the center position between the two lifting plates 574, further enhancing the stability of the lifting plate 574. The belt 53 transmission system composed of the first drive motor 51, the main pulley 52, the belt 53, the first pulley 54 and the second pulley 55 can stably transmit power to the rotating rod 56 to ensure the stable operation of the entire lifting device. The rotating rod 56 is movably connected to the side plate 6 through the bearing, and the main pulley 52 is connected through the belt 53 transmission system composed of the first drive motor 51, the main pulley 52, the belt 53, the first pulley 54 and the second pulley 55. The rotating shaft is connected to the rear base 1 to ensure the stability of the rotating parts. At the same time, the reinforced X-frame 576 enhances the overall structural strength of the lifting plate 574 to prevent the lifting plate 574 from deformation. The bottom of the screw rod 72 is movably connected to the middle of the lower plate wall of the lifting plate 574 on the left side through a bearing. The four sliders 2 74 are respectively slidably connected to the slide grooves 2 575. The four retractable rope wheels 571 are distributed in groups of two on the front and rear of the outer surface of the rotating rod 56 near the side plate 6, so that the retraction and release of the lifting rope 572 is more orderly, which is beneficial to the synchronous lifting and lowering of the lifting plate 574.

[0034] In this embodiment, the lifting device 7 includes a second drive motor 71, the output end of the second drive motor 71 passes through the lifting plate 574 on the left and is fixedly connected to a screw rod 72, the outer surface of the screw rod 72 is movably connected to a supporting frame 73, and the outer sides of the supporting frame 73 are fixedly connected to sliders 74. The front of the left frame wall, the front of the right frame wall and the front of the lower frame wall of the supporting frame 73 are jointly provided with a card slot 75, and a card door plate 76 is jointly installed in the card slot 75. The upper front end of the card door plate 76 is provided with a hand-gripping groove 77, and the bottom of the supporting frame 73 is fixedly connected to a resistance layer 78. The second drive motor 71 is fixedly installed at the middle part of the upper end of the lifting plate 574 on the left, and the bottom of the screw rod 72 is movably connected to the middle part of the lower plate wall of the lifting plate 574 on the left through a bearing, and the four sliders 74 are respectively slidably connected to the slide slots 575.

[0035] The second drive motor 71 is fixedly mounted on the middle part of the upper end of the lifting plate 574 on the left side, and its output end passes through the lifting plate 574 on the left side and drives the screw rod 72 fixedly connected thereto to rotate. The bottom of the screw rod 72 is movably connected to the middle part of the lower plate wall of the lifting plate 574 on the left side through a bearing, which ensures the stability of the rotation of the screw rod 72. The outer surface of the screw rod 72 is movably connected to the supporting frame 73. As the screw rod 72 rotates, the supporting frame 73 will perform a lifting movement along the axial direction of the screw rod 72. The sliding blocks 74 fixedly connected on the outer side of the supporting frame 73 slide in the sliding grooves 575 of the lifting plate 574 respectively, playing a guiding role, so that the supporting frame 73 can only perform a linear lifting movement along the screw rod 72. The card door plate 76 is installed in the card slot 75 commonly opened at the front part of the left frame wall, the front part of the right frame wall and the front part of the lower frame wall of the supporting frame 73. Personnel can open or close the card door plate 76 through the hand latch groove 77 at the upper front end of the card door plate 76, which is convenient for personnel to enter and exit the load-bearing frame 73. The resistance layer 78 fixedly connected to the bottom of the load-bearing frame 73 can increase friction when the load-bearing frame 73 contacts an object, thereby playing a stabilizing and buffering role. The slider 2 74 on the outside of the load-bearing frame 73 cooperates with the slide groove 2 575 of the lifting plate 574 to provide precise guidance for the lifting and lowering of the load-bearing frame 73, preventing the load-bearing frame 73 from shaking or shifting during the lifting process, thereby improving the safety of use. The design of the latch groove 75 and the card door plate 76 makes it convenient for operators to enter and exit the load-bearing frame 73. The setting of the hand latch groove 77 makes the operation of the card door plate 76 more convenient. The resistance layer 78 at the bottom of the load-bearing frame 73 increases friction when the load-bearing frame 73 contacts an object, thereby helping to improve the stability of the load-bearing frame 73 and reduce the risk of shaking and sliding.

[0036] It should be noted that the utility model is a mechanical engineering cyclic automatic lifting scaffold. The movement of the scaffold is achieved by four lockable universal movable wheels 2 arranged at the left and right parts of the lower ends of the two bases 1. The scaffold can be flexibly moved and locked when necessary. The reinforcement frame 3 and the side plate 6 on the base 1 play a role in reinforcing the overall structure. The lifting operation is mainly completed by the driving device 5 and the lifting device 7. The driving device 5 is located in the groove 4 of the front base 1. After the first driving motor 51 is started, its output end drives the main leather wheel 52 to rotate. The main leather wheel 52 is driven by the belt 53, so that the first leather wheel 5 4 and the second pulley 55 rotate, and the two rotating rods 56 rotate accordingly. The front end and the rear end of the rotating rod 56 are movably connected to the side plate 6 through bearings to ensure the stability of rotation. The retracting rope wheel 571 fixedly connected to the front and rear of the outer surface of the rotating rod 56 rotates accordingly, and the lifting rope 572 wound on the retracting rope wheel 571 realizes the retracting and releasing operation. After the lifting rope 572 is led out from the retracting rope wheel 571, it passes through the side block 10 and extends downward to be fixedly connected to the fixed shaft block 573. With the retraction and release of the lifting rope 572, the lifting plate 574 connected to the fixed shaft block 573 is lifted and lowered. The slider 577 at the lower front end and the lower rear end of 74 slides in the slide groove 11 on the inner side of the support plate 8 to ensure the stability of lifting. At the same time, the reinforced X frame 576 between the two lifting plates 574 is in an X-shaped structure, and its intersection is located at the center position between the two lifting plates 574, which further enhances the stability of the lifting plates 574. The second drive motor 71 of the lifting device 7 is fixedly installed in the middle of the upper end of the left lifting plate 574, and its output end drives the screw rod 72 to rotate. The bottom of the screw rod 72 is movably connected to the middle of the lower plate wall of the left lifting plate 574 through a bearing. The outer surface of the screw rod 72 The supporting frame 73 with movable connection on the surface can be lifted and lowered as the screw 72 rotates. The sliders 74 around the outer side of the supporting frame 73 are respectively slidably connected in the slide grooves 575 of the lifting plate 574 to ensure the smooth lifting of the supporting frame 73. A card door plate 76 is installed in the card groove 75 of the supporting frame 73, which can be operated through the hand groove 77. The resistance layer 78 at the bottom of the supporting frame 73 can increase the friction with the object and improve the safety. Through the coordinated work of the driving device 5 and the lifting device 7, the scaffolding can realize cyclic automatic lifting to meet the needs of mechanical engineering construction.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A mechanical engineering cyclic automatic lifting scaffold, comprising a base (1), characterized in that: Two bases (1) are provided, a groove (4) is provided in the middle of the upper end of the front base (1), a driving device (5) is fixedly connected to the rear groove wall of the groove (4), a lifting device (7) is fixedly connected to the upper left part of the driving device (5), and a support plate (8) is fixedly connected to the upper left part and the upper right part of the two bases (1), and four support plates (8) are provided, and the two support plates (8) on the left side and the two support plates (8) on the right side are fixedly connected to a horizontal plate (9); The driving device (5) comprises a first driving motor (51) and a belt (53). The output end of the first driving motor (51) passes through the front base (1) and is fixedly connected to a main pulley (52). The main pulley (52) is connected to a first pulley (54) and a second pulley (55) via a belt (53). A rotating rod (56) is inserted and fixedly connected to the front middle of the second pulley (55) and the front middle of the first pulley (54). The front and rear outer surfaces of the two rotating rods (56) are fixedly connected to two lifting components (57). The first driving motor (51) is fixedly installed in the groove (4).

2. The mechanical engineering cyclic automatic lifting scaffold according to claim 1 is characterized by: The lifting and lowering components (57) include a retractable rope wheel (571), four of which are provided, and the outer surface of the retractable rope wheel (571) is wound with a lifting rope (572), and the other ends of the lifting ropes (572) are fixedly connected to fixed shaft blocks (573), and the right ends of the two fixed shaft blocks (573) on the left and the left ends of the two fixed shaft blocks (573) on the right are fixedly connected to lifting plates (574). A reinforcing X-frame (576) is fixedly connected between the lower left end and the lower right end of the plate (574); a slider (577) is fixedly connected to the lower front end and the lower rear end of the lifting plate (574); a second slide groove (575) is provided on the front plate wall and the rear plate wall of the two lifting plates (574); four second slide grooves (575) are provided; and the retracting and releasing rope wheels (571) are fixedly connected to the front and rear outer surfaces of the rotating rod (56) in pairs.

3. The mechanical engineering cyclic automatic lifting scaffold according to claim 1 is characterized by: The lifting device (7) comprises a second drive motor (71), the output end of the second drive motor (71) passes through the left lifting plate (574) and is fixedly connected to a screw rod (72), the outer surface of the screw rod (72) is movably connected to a supporting frame (73), the outer sides of the supporting frame (73) are fixedly connected to a second slider (74), the front part of the left frame wall, the front part of the right frame wall and the front part of the lower frame wall of the supporting frame (73) are jointly provided with a card slot (75), a card door plate (76) is jointly installed in the card slot (75), the upper part of the front end of the card door plate (76) is provided with a hand buckle groove (77), the bottom of the supporting frame (73) is fixedly connected to a resistance layer (78), and the second drive motor (71) is fixedly installed at the middle part of the upper end of the left lifting plate (574).

4. The mechanical engineering cyclic automatic lifting scaffold according to claim 1 is characterized by: The left and right lower ends of the two bases (1) are fixedly connected with lockable universal movable wheels (2), and four lockable universal movable wheels (2) are provided. The upper ends of the two bases (1) are fixedly connected with a plurality of reinforcement frames (3). The left and right ends of the two bases (1) are fixedly connected with side panels (6), and the two side panels (6) are symmetrically distributed on the left and right sides. A cross plate (9) is fixedly connected between the two support plates (8) on the left and the two support plates (8) on the right. The left and right ends of the two cross plates (9) are fixedly connected with side blocks (10), and the side blocks (10) are symmetrically distributed in pairs. The inner sides of the four support plates (8) are provided with a slide groove (11).

5. The mechanical engineering cyclic automatic lifting scaffold according to claim 1 is characterized by: The front and rear ends of the two rotating rods (56) are movably connected to the side plates (6) via bearings, respectively, and the middle of the rear end of the main pulley (52) is movably mounted on the middle of the front end of the rear base (1) via a rotating shaft.

6. The mechanical engineering cyclic automatic lifting scaffold according to claim 2 is characterized by: The reinforced X-frame (576) is in an X-shaped structure, and the intersection of the reinforced X-frame (576) is located at the center between the two lifting plates (574). The four sliders (577) slide in the slide grooves (11) respectively. The four retractable rope wheels (571) are arranged in groups of two and are located at the front and rear of the outer surface of the rotating rod (56) near the side plate (6). After the lifting rope (572) is led out from the retractable rope wheel (571), it passes through the side block (10) and extends downward to be fixedly connected to the fixed shaft block (573).

7. The mechanical engineering cyclic automatic lifting scaffold according to claim 3 is characterized by: The bottom of the screw rod (72) is movably connected to the middle of the lower wall of the left lifting plate (574) through a bearing, and the four sliding blocks (74) are respectively slidably connected to the sliding grooves (575).

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