A construction hoist with convenient adjustment

Abstract

The application relates to the field of building construction equipment, in particular to a building construction elevator convenient to adjust, which comprises a hoist stand, a plurality of universal wheels arranged on the bottom of the hoist stand, a top frame fixedly connected to the top of the hoist stand, a guide plate fixedly arranged on the top of the top frame, and an adjusting plate slidingly arranged on the guide plate. The supporting assembly is arranged on the top frame, the supporting plate I and the supporting plate II synchronously translate along with the adjusting plate, the adjusting plate can be stably supported when sliding out of the guide plate, and the limiting assembly is arranged on the hoist stand to support and limit the guide plate. When a sudden falling accident occurs, the sliding locking assembly is used to automatically stably support the falling guide plate and the adjusting plate through the limiting assembly, so that the elevator can be safely lifted and adjusted at different construction positions.

Description

Technical Field

[0001] This invention relates to the field of construction equipment, and more particularly to an easily adjustable elevator for construction. Background Technology

[0002] With the rapid development of modern construction technology, high-rise buildings are springing up like mushrooms after rain. In the construction process, elevators are an indispensable vertical transportation tool, and their safety and convenience are crucial to improving construction efficiency. However, traditional elevators have many limitations in design and use, and cannot meet the needs of modern construction projects for efficiency, flexibility and safety.

[0003] A search revealed a patent with authorization announcement number CN210855190U, which discloses a mobile construction hoist, including a support plate, a top plate, an adjustment mechanism, and rollers. A base is fixedly connected to the top surface of the support plate, and a scissor-type lifting arm is provided on the top surface of the base. A top plate is provided on the top of the scissor-type lifting arm, and a baffle is provided on the outer edge of the top of the top plate. An adjustment mechanism is provided at the four corners of the top of the support plate. The adjustment mechanism includes a lead screw, with parallel sliding rods on both sides of the lead screw. The lead screw and sliding rods are slidably connected to a slider. A mounting plate is fixedly connected to one side of the slider, and a roller bracket is fixedly connected to the bottom side of the mounting plate. Both ends of the sliding rod are fixedly connected to two fixed seats. The bottom of the lead screw is rotatably connected to a fixed seat, and the top of the lead screw passes through the fixed seat at the top position and connects to an adjustment handwheel. Support feet are provided at the four corners of the bottom of the support plate.

[0004] The aforementioned patented design provides a mobile construction hoist that allows for manual adjustment of the rollers' height via an adjustable mechanism. When the hoist needs to be moved or transported, the rollers are lowered to mate with the ground, propelling the equipment. However, due to the lack of an emergency braking system that can quickly stop the hoist in case of emergencies, the absence of a timely and reliable braking mechanism could exacerbate the severity of an accidental fall. Furthermore, the climbing ladder is hinged to the top plate and secured with pins. In an emergency, if the pins fail to lock or unlock properly, the climbing ladder may become unstable, increasing the risk of falls. Therefore, it is necessary to design a highly safe and easily adjustable construction hoist to address the shortcomings of the existing technology. Summary of the Invention

[0005] In order to overcome the shortcomings of existing construction hoists that lack an emergency braking system and make it impossible for construction workers to effectively respond to unexpected events, the purpose of this invention is to provide a safe and easily adjustable construction hoist.

[0006] The technical solution of the present invention is as follows: a construction hoist that is easy to adjust, comprising: a hoist base, which is the driving body of the hoist; multiple casters installed at the bottom of the hoist base; a top frame fixed to the top of the hoist base; a guide plate fixedly installed at the top of the top frame; an adjusting plate slidably disposed on the guide plate, an electric screw being provided between the guide plate and the adjusting plate, the adjusting plate being able to move back and forth relative to the guide plate; a material placement frame disposed on the left side of the top surface of the adjusting plate, the material placement frame being a frame with openings at the front and rear; baffles symmetrically and rotatably installed at the openings on the front and rear sides of the material placement frame; and a support assembly disposed within the top frame and capable of supporting the adjusting plate, the support assembly including a support... The system comprises a support plate I, a support plate II, an elastic element I, and an elastic element II. The support plate I is symmetrically and slidably mounted on the front side of the top frame, and each support plate I penetrates the front sidewall of the top frame. The end of each support plate I is embedded in the front side of the bottom surface of the adjusting plate. The support plate II is symmetrically and slidably mounted on the rear side of the top frame, and each support plate II penetrates the rear sidewall of the top frame. The end of each support plate II is embedded in the rear side of the bottom surface of the adjusting plate, and each support plate II is embedded within the support plate I. An elastic element I is provided between the support plate I and the top frame, and an elastic element II is provided between the support plate II and the top frame. A limiting assembly is also provided on the lifting platform base. The limiting assembly is used to limit and support the guide plate and adjusting plate that are supported from the lifting platform base.

[0007] To further explain, the adjustment plate is equipped with fixed guardrails and movable guardrails. The fixed guardrails are symmetrically installed on the top right side of the adjustment plate, and the movable guardrails are rotatably installed on the right side of the adjustment plate. The fixed guardrails and the movable guardrails form a U-shaped guardrail on the adjustment plate, and construction workers can stand inside the U-shaped guardrail on the adjustment plate.

[0008] To further explain, the material placement frame is also provided with a partition plate. There are multiple partition plates arranged side by side at the bottom of the material placement frame. The partition plate can facilitate the stable placement of materials.

[0009] To further explain, the lifting platform base is equipped with a stabilizing component, which includes mounting blocks, supporting hydraulic cylinders, and support columns. Mounting blocks are provided at the four corners of the side of the lifting platform base, and supporting hydraulic cylinders are fixedly mounted on the mounting blocks. Support columns are connected to the telescopic rods of the supporting hydraulic cylinders.

[0010] Further explanation: The limiting component includes a fixed plate, a guide frame, slider I, a support rod, a connecting frame, and limiting blocks. Fixed plates are symmetrically fixed to both the front and rear sides of the lifting platform. A guide frame is fixed to the upper end of the fixed plate. Slider I is symmetrically slidably mounted on the upper part of the guide frame. A support rod is rotatably mounted on each slider I. A connecting frame is symmetrically fixed to both the front and rear sides of the bottom center of the guide plate. The support rod is rotatably connected to the lower end of the connecting frame. Multiple limiting blocks are slidably arranged inside the guide frame. The gap between adjacent limiting blocks is greater than that between slider I. A positioning spring is provided between each limiting block and the guide frame.

[0011] To further explain, the limiting block includes wedge block I and wedge block II. Both wedge block I and wedge block II are slidably mounted on the upper part of the guide frame. Both wedge block I and wedge block II are wedge blocks with symmetrical upper inclined surfaces. Wedge block I is located on the inner side, and wedge block II is located on the outer side. Wedge block I and wedge block II are symmetrically combined to form a limiting block. Each of the bottoms of wedge block I and wedge block II is equipped with a separate return spring.

[0012] Further explanation: each guide frame is equipped with a locking component, which includes a guide block, a mounting frame, slider II, and a limiting rod. Guide blocks are provided at both ends of the guide frame, and the mounting frame is slidably mounted on the guide frame via the guide blocks on both sides. A compression spring is provided between the guide block and the mounting frame. Slider II, the same number as the limiting blocks, are slidably mounted in each mounting frame. A return spring is provided between each slider II and the mounting frame. Each slider II is equipped with a limiting rod for locking the wedge block I and the wedge block II.

[0013] To further explain, both wedge block I and wedge block II have slots on their sides, and the limiting rods are inserted into the slots of wedge block I and wedge block II respectively, so that the individual wedge block I and wedge block II are combined into a single limiting block.

[0014] Further explanation: The system also includes a triggering assembly, which comprises a guide rod, a linkage rod, a wedge strip, and a pressing rod. Guide rods are fixed to both ends of the support rod. Linkage rods are slidably mounted on adjacent guide rods, close to the support rod. The lower ends of the linkage rods are connected to the mounting frame. Wedge strips are slidably connected inside the mounting frame. Each wedge strip consists of a strip and wedges, with the wedges extending upwards to the edge of the adjusting plate. A pressing rod is fixed to the bottom of each wedge strip. The pressing rod is a rigid rod with a central protrusion, located between the linkage rod and the support rod.

[0015] To further explain, the adjustment plate is equipped with an emergency component, which includes a pressure plate and a pedal. The pressure plate is symmetrically slidably installed on the front and rear sides of the adjustment plate. The pressure plate is in contact with the top surface of the wedge strip. A spring is provided between the pressure plate and the fixed guardrail. The pedal is fixedly connected to the pressure plate.

[0016] The beneficial effects are: 1. By setting a support component on the top frame, the support plate I and support plate II move synchronously with the adjustment plate, so that the adjustment plate can be stably supported when it slides out of the guide plate. In addition, a limit component is set on the lifting platform to support and limit the guide plate. In the event of a sudden fall, the limit component can be automatically stabilized by sliding the locking component, so that the falling guide plate and adjustment plate can be stably supported. This achieves the effect that the lifting platform can be safely raised and lowered and can be adjusted to different construction positions.

[0017] 2. This invention enables the stable placement of the elevator through a stabilizing component. By setting a trigger component, when the adjusting plate moves out of the guide plate, the trigger component can simultaneously lock the component. The locking component automatically disengages from the support component, thereby automatically locking the support component and preventing the guide plate and adjusting plate from falling, thus further improving the safety of the elevator.

[0018] 3. The present invention also includes an emergency component on the guide plate. When the trigger component fails, the construction personnel can directly trigger the locking component through the emergency component, so that the limit component can provide limit support, thereby achieving the effect of manually stopping the elevator in case of a sudden drop. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the lifting platform base, casters, and stabilizing components of the present invention.

[0021] Figure 3 This is a diagram showing the connection relationship between the guide plate and the adjustment plate of the present invention.

[0022] Figure 4 This is a three-dimensional structural cross-sectional view of the top frame, guide plate, and adjustment plate of the present invention.

[0023] Figure 5 This is a three-dimensional structural diagram of the support component of the present invention.

[0024] Figure 6 This is a diagram showing the connection relationship between the limiting component and the locking component of the present invention.

[0025] Figure 7 This is a three-dimensional structural diagram of a specific component of the limiting assembly of the present invention.

[0026] Figure 8 This is a three-dimensional structural cross-sectional view of the guide frame of the present invention.

[0027] Figure 9 This is a three-dimensional structural diagram of the guide frame, wedge block I, and wedge block II of the present invention.

[0028] Figure 10 This is a three-dimensional structural diagram of the mounting frame, slider II, and limiting rod of the present invention.

[0029] Figure 11 This is a diagram showing the connection relationship between the locking component and the triggering component of the present invention.

[0030] Figure 12 This is a three-dimensional structural diagram of the triggering component of the present invention.

[0031] Figure 13 This is a three-dimensional structural diagram of the emergency component of the present invention.

[0032] The components in the attached diagram are labeled as follows: 1: Lifting platform base; 100: Casters; 2: Top frame; 3: Guide plate; 4: Adjusting plate; 401: Fixed guardrail; 402: Movable guardrail; 5: Material placement frame; 501: Baffle; 502: Divider plate; 6: Support assembly; 601: Support plate I; 602: Support plate II; 603: Elastic component I; 604: Elastic component II; 7: Stabilizing assembly; 701: Mounting block; 702: Support hydraulic cylinder; 703: Column; 8: Limiting assembly; 80 1: Fixed plate; 802: Guide frame; 803: Slider I; 804: Support rod; 805: Connecting frame; 806: Limiting block; 807: Wedge block I; 808: Wedge block II; 9: Locking assembly; 901: Guide block; 902: Mounting frame; 903: Slider II; 904: Limiting rod; 10: Trigger assembly; 101: Guide rod; 102: Linkage rod; 103: Wedge strip; 104: Pressing rod; 11: Emergency assembly; 111: Lower pressure plate; 112: Pedal. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: An easily adjustable hoist for building construction, such as... Figures 1-5As shown, it includes: a lifting base 1, which is the driving body of the lifting machine; four casters 100, which are respectively installed at the four corners of the bottom of the lifting base 1; a top frame 2, which is fixed to the top of the lifting base 1; a guide plate 3, which is fixedly installed on the top of the top frame 2; an adjusting plate 4, which is slidably disposed on the guide plate 3, and an electric screw is provided between the guide plate 3 and the adjusting plate 4, which can drive the adjusting plate 4 to move back and forth on the guide plate 3; a material placement frame 5, which is disposed on the left side of the top surface of the adjusting plate 4, and the material placement frame 5 is a frame with openings at the front and back; baffles 501, which are symmetrically rotatably installed at the openings on the front and back sides of the material placement frame 5; and a support assembly 6, which is disposed in the top frame 2 and can support the adjusting plate 4, the support assembly 6 including a support plate I 601, a support plate II 602 and an elastic element I 603, and the front side of the top frame 2 is symmetrically slidably disposed on the top frame 2. The top frame 2 is equipped with a support plate I 601, which penetrates the front sidewall of the top frame 2 and has its end in contact with the front bottom surface of the adjusting plate 4. A support plate II 602 is symmetrically slidably mounted on the rear side of the top frame 2, penetrating the rear sidewall of the top frame 2. The end of each support plate II 602 is embedded in the rear bottom surface of the adjusting plate 4, and is also embedded within the support plate I 601. An elastic element I 603 and an elastic element II 604 are provided between the support plate I 601 and the top frame 2. A limiting component 8 is also provided on the lifting platform 1. This limiting component 8 is used to limit and support the guide plate 3 and adjusting plate 4 as they rise from the lifting platform 1, preventing them from falling in the event of a malfunction of the lifting platform 1.

[0035] like Figure 1 and Figure 2 As shown, the adjusting plate 4 is provided with a fixed guardrail 401 and a movable guardrail 402. The fixed guardrail 401 is symmetrically installed on the right side of the top surface of the adjusting plate 4, and the movable guardrail 402 is rotatably installed on the right side of the adjusting plate 4. The fixed guardrail 401 and the movable guardrail 402 form a U-shaped guardrail on the adjusting plate 4, and construction workers can stand inside the U-shaped guardrail on the adjusting plate 4.

[0036] like Figure 2 and Figure 6As shown, the material placement frame 5 is also provided with a partition plate 502. There are multiple partition plates 502 arranged side by side at the bottom of the material placement frame 5. The partition plate 502 can facilitate the stable placement of materials. The lifting platform base 1 is provided with a stabilizing component 7. The stabilizing component 7 includes a mounting block 701, a supporting hydraulic cylinder 702 and a support column 703. Mounting blocks 701 are provided at the four corners of the side of the lifting platform base 1. Supporting hydraulic cylinders 702 are fixedly installed on the mounting blocks 701. The support column 703 is connected to the telescopic rod of the supporting hydraulic cylinder 702. The support column 703 is adjusted by the telescopic rod of the supporting hydraulic cylinder 702 at each location to support the uneven bottom surface, so that the lifting platform can be placed stably on the ground.

[0037] like Figure 1 , Figure 6 , Figure 7 and Figure 8 As shown, the limiting component 8 includes a fixed plate 801, a guide frame 802, a slider I 803, a support rod 804, a connecting frame 805, and a limiting block 806. Fixed plates 801 are symmetrically fixed to both the front and rear sides of the lifting platform 1. A guide frame 802 is fixed to the upper end of the fixed plate 801. Slider I 803 is symmetrically slidably mounted on the upper part of the guide frame 802. Support rods 804 are rotatably mounted on each slider I 803. Connecting frames are symmetrically fixed to both the front and rear sides of the bottom center of the guide plate 3. 805, the support rod 804 is rotatably connected to the lower end of the connecting frame 805, and multiple limiting blocks 806 are slidably arranged in the guide frame 802. The gap between adjacent limiting blocks 806 is greater than that between slider I 803. A spring is provided between the limiting blocks 806 and the guide frame 802. The slider I 803 can be sequentially engaged between two adjacent limiting blocks 806, so that the support rod 804 supports the guide plate 3 upward through the connecting frame 805.

[0038] like Figure 1 , Figure 8 and Figure 9 As shown, the limiting block 806 includes wedge block I 807 and wedge block II 808. Both wedge block I 807 and wedge block II 808 are slidably mounted on the upper part of the guide frame 802. Wedge block I 807 and wedge block II 808 are wedge blocks with symmetrical upper inclined surfaces. Wedge block I 807 is located on the inner side, and wedge block II 808 is located on the outer side. Wedge block I 807 and wedge block II 808 are symmetrically combined to form the limiting block 806. Each wedge block I 807 and wedge block II 808 has a separate return spring installed at its bottom. The top inclined surface of wedge block I 807 and wedge block II 808 is flush with the slider I 803.

[0039] like Figure 6, Figure 7 and Figure 10 As shown, each guide frame 802 is equipped with a locking component 9. The locking component 9 includes a guide block 901, a mounting frame 902, sliders II 903, and a limiting rod 904. Guide blocks 901 are provided at both ends of the guide frame 802. The mounting frame 902 is slidably mounted to the guide frame 802 via the guide blocks 901 on both sides. A compression spring is provided between the guide blocks 901 and the mounting frame 902. Sliding sliders II, in the same number as the limiting blocks 806, are slidably mounted within each mounting frame 902. 903, a return spring is provided between the slider II 903 and the mounting frame 902. The slider II 903 is provided with a limiting rod 904 for locking the wedge block I 807 and the wedge block II 808. The sides of the wedge block I 807 and the wedge block II 808 are provided with slots. The limiting rod 904 is inserted into the slots of the wedge block I 807 and the wedge block II 808 respectively, so that the individual wedge block I 807 and the wedge block II 808 are combined into a whole limiting block 806.

[0040] When this elevator is used for construction, after the construction workers stop the elevator base 1 at the construction site, they drive the support column 703 to support the ground by controlling the support hydraulic cylinder 702. Depending on the unevenness of the ground, the support length of the support column 703 is finely adjusted to ensure the elevator base 1 is stably placed on the construction ground. After the baffle 501 is rotated open from the material placement frame 5, the construction materials are placed into the material placement frame 5. The construction workers then rotate to open the movable guardrail 402 and climb onto the adjusting plate 4. After closing the movable guardrail 402, the elevator base 1 is activated, and the elevator base 1 simultaneously lifts the construction workers on the adjusting plate 4 and the construction materials in the material placement frame 5. When it is necessary to adjust the construction position, the adjusting plate 4 can be driven by the electric screw on the guide plate 3. Smoothly move to the required position. When the adjusting plate 4 moves forward off the guide plate 3, the support plate I 601, driven by the adjusting plate 4, overcomes the elastic force of the elastic element I 603 and extends forward synchronously to the top frame 2, providing stable support for the bottom of the adjusting plate 4. When the adjusting plate 4 moves backward off the guide plate 3, the support plate II 602 similarly overcomes the elastic force of the elastic element II 604 and extends backward synchronously to the top frame 2, providing stable support for the bottom of the adjusting plate 4. As the lifting platform 1 continues to rise, the rising connecting frame 805 will pull the two side sliders I 803 inward through the support rod 804. Initially, under the action of the compression spring, the limiting rod 904 in the mounting frame 902 is locked in the bayonet of the wedge block I 807 and the wedge block II 808. Inside, wedge block I 807 and wedge block II 808 combine to form a limiting block 806. When slider I 803 contacts the inclined surface of the limiting block 806, it overcomes the spring force of the positioning spring and sequentially presses down on multiple limiting blocks 806, sliding from the outside to the inside on the guide frame 802 until the elevator base 1 lifts the construction personnel and materials to a suitable construction height. Then, sliders I 803 on both sides will slide between the two limiting blocks 806. If the elevator suddenly malfunctions and falls, the construction personnel can manually pull the mounting frame 902 away from the guide frame 802, preventing the limiting rod 904 inside the mounting frame 902 from inserting into the limiting block 806. At this point, the limiting block 806 will separate into individual wedge block I 807 and wedge block II 808. 08. During the descent, the upward-supporting rod 804 is supported at the bottom of the guide plate 3. The descending guide plate 3 will push the support rods 804 on both sides downward. When the two support rods 804 are pushed outward, the sliders I 803 on both sides slide outward on the guide frame 802. The outward sliding slider I 803 first contacts the inclined surface of the adjacent wedge block I 807. At this time, the slider I 803 can directly overcome the elastic force of the return spring and press down the adjacent wedge block I 807. When the slider I 803 continues to slide and contacts the adjacent wedge block II 808, the slider I 803 will contact the vertical surface of the wedge block II 808. At this time, the wedge block II 808 will block and restrict the slider I 803 from continuing to slide outward, thus preventing the support rod 804 from continuing to push outward.This ensures that the support rod 804 is fixedly supported at the bottom of the guide plate 3, immediately stopping the guide plate 3 and adjusting plate 4 from falling, thus guaranteeing the safety of construction personnel on the adjusting plate 4.

[0041] Example 2: Based on Example 1, such as Figure 1 , Figure 11 and Figure 12 As shown, it also includes a trigger assembly 10, which includes a guide rod 101, a linkage rod 102, a wedge strip 103, and a pressing rod 104. Guide rods 101 are fixed to both ends of the support rod 804. Linkage rods 102 are slidably arranged on adjacent guide rods 101, and the linkage rods 102 are close to the support rod 804. The lower ends of the linkage rods 102 are all connected to the mounting frame 902. Wedge strips 103 are slidably connected inside the connecting frame 805. Composed of a long strip and a wedge, the wedge of the long strip 103 extends upward to the edge of the adjusting plate 4. Each of the long strips 103 has a pressing rod 104 fixed to its bottom. The pressing rod 104 is a rigid rod with a central protrusion. The pressing rod 104 is located between the linkage rod 102 and the support rod 804. The pressing rod 104 presses the linkage rod 102 downward to move it, so that the linkage rod 102 drives the limiting rod 904 on the mounting frame 902 to release the locking of the wedge block I 807 and the wedge block.

[0042] like Figure 1 and Figure 13 As shown, the adjustment plate 4 is provided with an emergency component 11, which includes a pressure plate 111 and a pedal 112. The pressure plate 111 is symmetrically slidably installed on the front and rear sides of the adjustment plate 4. The pressure plate 111 is in contact with the top surface of the wedge strip 103. A spring is provided between the pressure plate 111 and the fixed guardrail 401. The pedal 112 is fixedly connected to the pressure plate 111. By stepping on the pedal 112, the pressure plate 111 is pressed down on the wedge strip 103, so that the linkage rod 102 can be pushed out of the mounting frame 902 in an emergency.

[0043] When the adjusting plate 4 moves out of the guide plate 3, the adjusting plate 4 will press against the wedge block strip 103 on the same side. Under the guidance of the connecting frame 805, the wedge block strip 103, after being pressed, will drive the pressing rod 104 to press downward against the linkage rod 102. The linkage rod 102, under the guidance of the guide rod 101, will slide. The sliding linkage rod 102 will simultaneously drive the mounting frame 902 to move, so that the mounting frame 902 will automatically disengage from the guide frame 802 when the adjusting plate 4 moves out of the guide plate 3. Thus, the limiting rod 904 of the mounting frame 902 will no longer lock the limiting block 806, thereby the wedge block II 80 8 can automatically block and lock slider I 803 to prevent the adjustment plate 4 from falling when it moves out of the guide plate 3 in case of malfunction. Construction personnel can also manually step on the pedal 112 on the adjustment plate 4. Stepping on the pedal 112 will drive the lower pressure plate 111 to move down against the spring force, so that the lower pressure plate 111 directly presses down the wedge block strip 103. In case of emergency, the separation of the guide frame 802 and the mounting frame 902 can be manually controlled, thereby realizing the emergency limit of the wedge block II 808 to slider I 803, so that the elevator can be stopped in case of sudden fall and avoid major safety accidents.

[0044] The technical principles of the embodiments of the present invention have been described above with reference to specific examples. These descriptions are merely for explaining the principles of the embodiments of the present invention and should not be construed as limiting the scope of protection of the embodiments of the present invention in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of the present invention without creative effort, and these embodiments will all fall within the scope of protection of the embodiments of the present invention.

Claims

1. A construction site elevator convenient to adjust, comprising: an elevator base, which is the driving main body of the elevator; universal wheels, which are provided in plurality and installed on the bottom of the elevator base; and a top frame, which is fixedly connected to the top of the elevator base; further comprising: a guide plate, which is fixedly installed on the top of the top frame; an adjusting plate, which is slidingly arranged on the guide plate; an electric screw rod, which is arranged between the guide plate and the adjusting plate; the adjusting plate can translate forward and backward relative to the guide plate; a material placing frame, which is arranged on the left top surface of the adjusting plate; the material placing frame is a frame body with front and rear openings; baffle plates, which are symmetrically and rotatably installed on the openings on the front and rear sides of the material placing frame; a support assembly, which comprises support plates I and II, elastic members I and II; the support plates I are symmetrically and slidingly installed on the front side of the top frame; the support plates I are all penetrated through the front side wall of the top frame; the end portions of the support plates I are embedded into the front bottom surface of the adjusting plate; the support plates II are symmetrically and slidingly installed on the rear side of the top frame; the support plates II are all penetrated through the rear side wall of the top frame; the end portions of the support plates II are embedded into the rear bottom surface of the adjusting plate; the support plates II are respectively embedded into the support plates I; the elastic member I is arranged between the support plates I and the top frame; the elastic member II is arranged between the support plates II and the top frame; a limiting assembly, which is arranged on the elevator base and is used for limiting and supporting the guide plate and the adjusting plate; the limiting assembly comprises fixed plates, guide frames, sliding blocks I, support rods, connecting frames and limiting blocks; the fixed plates are symmetrically and fixedly connected to the front and rear sides of the elevator base; the guide frames are fixedly connected to the upper end portions of the fixed plates; the sliding blocks I are symmetrically and slidingly installed on the upper portions of the guide frames; the support rods are rotatably installed on the sliding blocks I; the connecting frames are symmetrically and fixedly connected to the middle portions of the bottom surfaces of the guide plates; the support rods are rotatably connected to the lower end portions of the connecting frames; the limiting blocks are slidingly arranged in the guide frames; the gap between adjacent limiting blocks is greater than the sliding block I; the limiting blocks and the guide frames are provided with positioning springs; the limiting blocks comprise wedge blocks I and II; the wedge blocks I and II are all penetrated through and slidingly installed on the upper portions of the guide frames; the wedge blocks I and II are wedge blocks with symmetric upper inclined surfaces; the wedge block I is located on the inner side; the wedge block II is located on the outer side; the wedge blocks I and II are symmetrically combined into the limiting block; the bottom portions of the wedge blocks I and II are provided with return springs; the guide frames are provided with locking assemblies; the locking assemblies comprise guide blocks, mounting frames, sliding blocks II and limiting rods; the guide blocks are arranged on the two end portions of the guide frames; the mounting frames are slidingly installed on the guide frames through the guide blocks on the two sides; the guide blocks and the mounting frames are provided with compression springs; the sliding blocks II are slidingly installed in the mounting frames; the number of the sliding blocks II is consistent with that of the limiting blocks; the sliding blocks II and the mounting frames are provided with return springs; the limiting rods are arranged on the sliding blocks II and are used for locking the wedge blocks I and II. characterized in that The adjusting plate is provided with fixed guardrails and movable guardrails; the fixed guardrails are symmetrically installed on the right top surface of the adjusting plate; the movable guardrails are rotatably installed on the right side of the adjusting plate; the fixed guardrails and the movable guardrails form U-shaped guardrails on the adjusting plate. The material placing frame is further provided with partition plates; the partition plates are provided in plurality and are arranged side by side on the bottom of the material placing frame; the partition plates are used for stably placing the controlled materials. ​ ​ ​ ​ ​ ​ 2. A construction hoist according to claim 1, wherein: ​ 3. A construction hoist according to claim 2, wherein: ​ 4. A construction hoist according to claim 3, wherein: The elevator seat is provided with a stabilizing assembly, which comprises mounting blocks, support hydraulic cylinders and support columns.

5. A construction hoist according to claim 4, wherein: The side surface of the wedge block I and the wedge block II are provided with clamping holes, and the limiting rods are inserted into the clamping holes of the wedge block I and the wedge block II respectively, so that the wedge block I and the wedge block II are combined into the limiting clamping block.

6. A construction hoist according to claim 5, wherein: The trigger assembly comprises guide rods, linkage rods, wedge block strips and extrusion rods, the two ends of the support rod are fixedly connected with the guide rods, the adjacent guide rods are slidably provided with the linkage rods, the linkage rods are close to the support rod, the lower ends of the linkage rods are connected to the mounting frame, the inside of the connecting frame is slidably connected with the wedge block strips, the wedge block strip is composed of a strip and a wedge block, the wedge block of the wedge block strip extends upward to the edge of the adjusting plate, the bottom of the wedge block strip is fixedly connected with the extrusion rod, the extrusion rod is a hard rod with a protrusion in the middle, and the extrusion rod is located between the linkage rod and the support rod.

7. A construction hoist according to claim 6, wherein: The adjusting plate is provided with an emergency assembly, which comprises a pressing plate and a pedal, the front and rear sides of the adjusting plate are symmetrically slidably provided with the pressing plate, the top surface of the pressing plate and the wedge block strip are in contact, the pressing plate and the fixed guardrail are provided with springs, and the pressing plate is fixedly connected with the pedal.

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