Construction hoist

Abstract

The invention provides a construction hoist. The construction hoist comprises a guide rail frame and a suspension cage. The guide rail frame is provided with a mounting surface for connecting the wall-attached frame; the cage is attached to the guide rail frame and can reciprocate along the guide rail frame; the cage is provided with an approaching surface facing the building structure; wherein the mounting surface and the approaching surface are arranged in a coplanar manner. According to the invention, the approaching surface of the suspension cage and the mounting surface of the guide rail bracket are arranged in a coplanar manner, and the structure that the U-shaped or C-shaped suspension cage surrounds the guide rail bracket is preferably adopted, so that the invalid thickness of outward projection of the suspension cage in the existing external hanging symmetric design is thoroughly eliminated from the spatial layout. Therefore, the guide rail frame can be installed in a mode of being tightly attached to a building structure, the length of the wall attaching frame is shortened to meet the requirement for a necessary safe operation gap, and the operation space occupied by the whole building hoist is greatly reduced. And the lifting device can be applied to special working conditions such as bridges, narrow roadways, special-shaped structures and the like that existing construction lifters cannot be mounted due to insufficient space or the mounting cost is extremely high.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, and more specifically, to a construction hoist. Background Technology

[0002] The content in this section only provides background information related to this invention and may not constitute prior art.

[0003] Construction hoists are key equipment used for the vertical transportation of personnel and materials in civil engineering and building construction. They mainly consist of a vertically installed guide rail frame, a cage that runs along the guide rail frame, and a wall-mounted frame that fixes the guide rail frame to the building structure.

[0004] In related technologies, typical construction hoists employ an "externally mounted symmetrical" design. In this design, cages are symmetrically positioned on both the left and right sides of the guide rail frame. For a single cage, to improve the reliability of cage lifting, the center of gravity of the cage is coplanar with the mechanical center of the guide rail frame. This causes the inner side of the cage to bulge towards the building structure (including buildings and structures), meaning the side of the cage facing the building structure is closer to the building structure than the side of the guide rail frame facing the building structure.

[0005] This protruding cage design prevents the guide rail mounting surface from directly contacting the building structure. During actual installation, additional space must be reserved between the guide rail mounting surface and the building structure; this space must be at least equal to the sum of the cage's protrusion thickness and the necessary safety clearance. The direct consequence is an unnecessary increase in the length of the wall-mounted frame, and a retraction of the construction hoist's overall installation position away from the building structure. This not only occupies valuable working space but also significantly increases installation and operating costs. This problem is particularly pronounced in typical work conditions with limited installation space, such as bridges, narrow passageways, or irregularly shaped structures. For example, in bridge construction, when the pier width is smaller than the bridge deck above, and the construction hoist's guide rail needs to be attached to the pier but serve the bridge deck operations, the protruding cage necessitates a significant retraction of the guide rail to ensure a safe distance between the cage and the wider bridge deck structure. This results in a surge in the length of the wall-mounted frame, excessive cantilever, and severe challenges to structural rigidity and stability, leading to even higher installation and operating costs. Summary of the Invention

[0006] In view of this, the object of the present invention is to provide a construction hoist that at least overcomes the above-mentioned technical problems of existing construction hoists with an "externally mounted symmetrical" design.

[0007] The objective of this invention is achieved through the following technical solution: This invention provides a construction hoist, comprising: The guide rail has a mounting surface for connecting the wall-mounted bracket; A cage is attached to the guide rail frame and can reciprocate along the guide rail frame; the cage has an approach surface facing the building structure. The mounting surface and the approach surface are coplanar.

[0008] Optionally, at least a portion of the structure of the cage is arranged around the guide rail frame.

[0009] Optionally, the projected outline of the cage in the horizontal plane is U-shaped or C-shaped; the guide rail frame is located within the space enclosed by the cage.

[0010] Optionally, the left side, right side and rear side of the guide rail frame are provided with driving engagement parts; Optionally, the drive component is configured to cooperate with the corresponding drive engagement part to provide the cage with the driving force required to perform the reciprocating movement.

[0011] Optionally, the drive engagement part includes a drive rack disposed on the guide rail frame; The drive assembly includes a drive motor and a drive gear driven by the drive motor; the drive gear meshes with the drive rack.

[0012] Optionally, the drive assembly further includes a guide rail disposed on the guide rail frame; the drive assembly further includes a guide wheel or guide shoe that cooperates with the guide rail.

[0013] Optionally, the construction hoist further includes a traction anti-fall assembly; the traction anti-fall assembly includes: The hoisting mechanism is fixedly mounted on the cage; A traction rope; a first end of the traction rope is connected to the winch mechanism; a second end of the traction rope opposite to the first end is connected to the top of the guide rail frame to apply an upward pulling force to the cage; The winch mechanism is used to wind up and unwind the traction rope during the reciprocating movement of the cage, so that the traction rope remains taut.

[0014] Optionally, there are three traction anti-fall components, which are respectively located on the left, right and rear sides of the cage.

[0015] Optionally, the hoisting mechanism includes: The traction motor is fixedly mounted on the cage; The drum is connected to the output end of the traction motor; the first end of the traction rope is connected to the drum.

[0016] Optionally, the construction hoist also includes: An attitude detection component is used to detect the attitude data of the cage when it performs the reciprocating movement. The control system is configured to dynamically adjust the output torque of each of the traction motors based on the attitude data detected by the attitude detection component.

[0017] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects: 1. This invention eliminates the ineffective thickness of the outward protrusion of the cage in existing "externally mounted symmetrical" designs by setting the approach surface of the hoist cage to be coplanar with the mounting surface of the guide rail frame, and preferably adopting a U-shaped or C-shaped structure in which the hoist cage surrounds the guide rail frame. This allows the guide rail frame to be installed close to the building structure, thereby shortening the length of the wall-mounted frame to only meet the necessary safety operating clearance, greatly reducing the overall working space occupied by the construction hoist. This enables it to be used in special working conditions such as bridges, narrow alleys, and near irregularly shaped structures, where existing construction hoists cannot be installed due to insufficient space or extremely high installation costs. This significantly expands the application range of construction hoists and reduces installation and usage costs.

[0018] 2. To address the potential changes in dynamic characteristics caused by compact U-shaped or C-shaped hoists, this invention creatively introduces a multi-directional active traction fall protection system and an intelligent control system based on attitude feedback. The three-sided traction fall protection components not only provide independent fall protection redundancy, but more importantly, through cooperation with the control system, form a proactively force-applying "spatial suspension network." The control system senses the hoist's attitude in real time and dynamically distributes the tension at the three traction points, actively suppressing swaying and tilting caused by load offset, wind load, or acceleration / deceleration. This ensures that while achieving maximum space efficiency, the construction hoist's operational stability, safety, and ride comfort reach or even surpass the design level of existing symmetrical structures. Attached Figure Description

[0019] Figure 1 A structural schematic diagram of a construction hoist provided for an embodiment of the present invention; Figure 2 for Figure 1 The side view of the construction hoist shown in the image; Figure 3 for Figure 1 Enlarged view of the local structure at point A in the middle.

[0020] Icons: 10-Guide rail frame, 11-Mounting surface, 20-Cage, 21-Approach surface, 30-Drive mating part, 40-Drive assembly, 50-Traction anti-fall assembly, 51-Winding mechanism, 511-Traction motor, 512-Drum, 52-Traction rope, 53-Connecting part, 60-Mounting plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments. The same reference numerals in the accompanying drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the described embodiments of this invention without creative effort are within the scope of protection of this invention.

[0022] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of protection of this invention may have fewer components, other components not shown in the drawings, different components, components with different arrangements, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0023] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components.

[0024] Please refer to Figures 1 to 3 As shown, Embodiment 1 of the present invention provides a construction hoist that at least overcomes the technical problems of existing construction hoists with an "externally mounted symmetrical" design, which have excessively long wall-mounted frames, occupy too much working space, and significantly increase installation and usage costs under typical working conditions where installation space is limited.

[0025] like Figure 1 and Figure 2 As shown, it illustrates the general structure of the construction hoist provided in Embodiment 1 of the present invention. Figure 1 In this construction hoist, there are guide rails 10 and a cage 20.

[0026] The guide rail frame 10 can be a steel frame structure assembled vertically from multiple standard sections, mainly used to support and guide the cage 20 to move back and forth vertically. Furthermore, the guide rail frame 10 has a mounting surface 11 for connecting to a wall-mounted frame. In practical applications, one end of the wall-mounted frame is connected to the mounting surface 11, and the other end is connected to the building structure to ensure the stability of the guide rail frame 10 structure.

[0027] The hoist cage 20 is attached to the guide rail frame 10 and can reciprocate along the guide rail frame 10 with the cooperation of the drive engagement part 30 and the drive assembly 40, which will be described below, to realize the basic lifting function of the hoist cage 20. Furthermore, the hoist cage 20 has an approach surface 21 facing the building structure. This approach surface 21 is the side of the hoist cage 20 facing the building structure when the construction hoist is installed and ready.

[0028] More importantly, embodiments of the present invention further specify that the mounting surface 11 of the guide rail frame 10 and the approach surface 21 of the cage 20 are coplanar, see Figure 2 That is, when the construction hoist is installed and ready, viewed from a direction perpendicular to the mounting surface 11 and the approach surface 21 (i.e., from above), the mounting surface 11 and the approach surface 21 are located in the same vertical plane, or the normal distance between them is extremely small (e.g., less than 50 mm), and can be considered coplanar in engineering terms. This spatial relationship ensures that the main structure of the hoist cage 20 no longer protrudes horizontally beyond the mounting surface 11 of the guide rail frame 10 in the direction of the building structure.

[0029] It is worth noting that the building structure described in the embodiments of the present invention includes buildings and structures. Buildings generally refer to houses suitable for human habitation and activities, such as residences and office buildings; structures generally refer to buildings unsuitable for human habitation, such as bridges and dams.

[0030] By implementing the above limitations, the aforementioned technical problems are effectively solved. Specifically, in existing designs, because the cage 20 of the construction hoist protrudes, the mounting surface 11 of the guide rail frame 10 must be moved back away from the building structure, with a back distance of at least the sum of the "protrusion thickness of the cage 20" and the "safe operating clearance between the cage 20 and the building structure". The construction hoist provided in this embodiment of the invention physically eliminates the protrusion thickness of the cage 20 by making the mounting surface 11 coplanar with the approach surface 21. Therefore, the positioning reference of the guide rail frame 10 can be directly simplified to only needing to meet the safe operating clearance between the cage 20 and the building structure. This fundamental change optimizes the installation logic of the construction hoist in typical working conditions where the bridge deck is wider than the piers, as described in the background art: the guide rail frame 10 can be installed close to the bridge deck, avoiding the predicament of forcing the guide rail frame 10 to move back significantly from the bridge deck due to concerns about the cage 20 colliding with the bridge deck, resulting in an excessively long wall-mounted frame, while ensuring safety.

[0031] As can be seen, the construction hoist provided in this embodiment of the invention achieves the core effects of compact structure and significantly shortened wall-mounted frame by making the mounting surface 11 of the guide rail frame 10 and the approach surface 21 of the cage 20 coplanar, which not only saves a lot of working space, but also reduces installation and use costs.

[0032] To achieve the aforementioned coplanar arrangement and optimize the structural stress of the construction hoist, in a preferred embodiment of the present invention, as follows: Figure 1 As shown, at least a portion of the structure of the cage 20 is arranged around the guide rail frame 10. Furthermore, the projected outline of the cage 20 in the horizontal plane is specifically designed to be U-shaped or C-shaped, such that the guide rail frame 10 is located within the space enclosed by the cage 20. The interior of the cage 20 is provided with a corresponding shaped (e.g., U-shaped or C-shaped) movable space.

[0033] This wraparound layout allows the structural frame of the hoist 20 to envelop and act on the guide rail frame 10 from multiple directions, providing a mechanical basis for subsequent multi-point drive and stable control. This design not only naturally achieves coplanarity between the approach surface 21 of the hoist 20 and the mounting surface 11 of the guide rail frame 10, but also, by having the hoist 20 wrap around the guide rail frame 10, provides a better lever arm and a more uniform load distribution for resisting lateral forces (such as wind loads) during operation, compared to a single-sided suspension force distribution mode, thus structurally enhancing the overall rigidity of the construction hoist. Furthermore, the U-shaped or C-shaped structure of the hoist 20 provides greater operating space.

[0034] Based on this, in order to drive the aforementioned circumferential cage 20 to move stably, in a preferred embodiment of the present invention, referring to... Figure 3 As shown, the left, right, and rear sides of the guide rail frame 10 are each provided with a drive engagement part 30. The cage 20 is provided with drive components 40 that correspond one-to-one with the drive engagement parts 30. Each drive component 40 is used to engage with the corresponding drive engagement part 30 to provide the drive force required for the cage 20 to reciprocate.

[0035] In embodiments of the present invention, the rear side of the guide rail frame 10 refers to the side of the guide rail frame 10 that faces away from the building structure. Correspondingly, the rear side of the hoisting cage 20, as will be described below, refers to the side of the hoisting cage 20 that faces away from the building structure.

[0036] In practical applications, the cage 20 reciprocates along the guide rail frame 10 through the combined action of three sets of drive engagement parts 30 and drive components 40. This drive and guide system, arranged on three sides, forms a symmetrical and balanced driving force and constraint force. Compared with single-sided drive, three-sided drive can provide greater total driving force and redundant safety; more importantly, it can effectively counteract the off-center load moment caused by uneven internal load distribution of the cage 20 or by external forces, ensuring that the cage 20 rises and falls smoothly along the guide rail frame 10 as much as possible, greatly reducing the shaking and noise of the cage 20 during operation, and achieving stable operation that matches the ring-shaped structure.

[0037] In some possible embodiments, the drive engagement part 30 includes a drive rack disposed on the guide rail frame 10 and a guide rail parallel to the drive rack. The drive assembly 40 includes a drive motor, a drive gear driven by the drive motor, and a guide wheel or guide shoe that engages with the guide rail. The drive gear meshes with the drive rack.

[0038] Thus, when the drive gear rotates under the drive motor, it moves along the drive rack, thereby moving the cage 20 along the guide rail frame 10. At the same time, the guide wheel or guide shoe moves along the guide rail for limiting and guiding.

[0039] This design allows the existing construction hoist guide rail frame 10 to be reused, requiring only the addition of a drive engagement part 30 at the rear of the guide rail frame 10, thus helping to make rational use of existing resources.

[0040] Example 2 To further improve the safety of the construction hoist and achieve active stabilization of the cage 20's posture during lifting, based on Embodiment 1, Embodiment 2 of the present invention provides another construction hoist.

[0041] Unlike Embodiment 1, the construction hoist provided in Embodiment 2 of the present invention further includes a traction anti-fall component 50.

[0042] Reference Figure 1 and Figure 3 As shown, the traction anti-fall assembly 50 includes a winch mechanism 51 fixed to the cage 20 and a traction rope 52 connected to the guide rail frame 10.

[0043] The first end of the traction rope 52 is connected to the winch mechanism 51; the second end of the traction rope 52, opposite to the first end, is connected to the top of the guide rail frame 10, so as to apply an upward pulling force to the cage 20 through the traction rope 52. Exemplarily, a mounting plate 60 can be provided on the top of the guide rail frame 10, and a connecting member 53 for anchoring the second end of the traction rope 52 can be provided on the mounting plate 60.

[0044] The winch mechanism 51 is used to wind up and unwind the traction rope 52 during the reciprocating movement of the cage 20, so that the traction rope 52 remains taut and thus continuously applies an upward pulling force to the cage 20.

[0045] The traction anti-fall assembly 50 provides a purely mechanical safety redundancy independent of the main drive system consisting of the drive engagement part 30 and the drive assembly 40. In the event of a failure of the main drive system, the tensioned traction rope 52 can immediately bear the load to prevent the cage 20 from falling. Furthermore, the design of mounting the winch mechanism 51 on the cage 20 facilitates the maintenance and repair of the winch mechanism 51 and facilitates the acquisition of power sources such as electricity.

[0046] Furthermore, the aforementioned traction fall arrestor 50 can be configured as three. The three traction fall arrestor 50s are respectively located on the left, right, and rear sides of the cage 20, as shown in the figure. Figure 3 The second ends of the traction ropes 52 of the three traction fall arrestor assemblies 50 are respectively led out from the left, right, and rear sides of the cage 20, and connected to the left, right, and rear sides of the guide rail frame 10, respectively. Figure 1 .

[0047] By setting up three independently controllable traction and fall protection components 50, the three traction ropes 52 form a three-dimensional constraint on the cage 20 in space, which further improves the fall protection effect and provides an execution basis for subsequent active attitude control.

[0048] In some possible embodiments, reference continues to be made to Figure 3 As shown, the hoisting mechanism 51 includes a traction motor 511 and a drum 512. The traction motor 511 is fixedly mounted on the top of the cage 20. The drum 512 is driven to the output end of the traction motor 511 so that the traction motor 511 can drive the drum 512 to rotate. The first end of the traction rope 52 is connected to the drum 512.

[0049] The winch mechanism 51 with this design is simple in structure and easy to maintain. In particular, the traction motor 511 can be a servo motor. Servo motors have the characteristics of fast response speed, high control precision, and strong overload capacity. Through the matching servo driver and encoder, the control system described below can achieve precise torque control of the traction motor 511, thereby accurately regulating the tension of the traction rope 52, enabling the traction motor 511 to respond to control commands and output the target torque within milliseconds.

[0050] Example 3 Based on Embodiment 2, the inventors of this invention further discovered that while the compact layout of the U-shaped or C-shaped cage 20 has many advantages as described in Embodiment 1, it also results in the cage 20 having a completely different mass distribution and stress characteristics compared to the existing externally mounted symmetrical cage 20. Unlike the existing design where the center of gravity of the cage 20 is close to the mechanical center of the guide rail frame 10, the cage 20 in this embodiment of the invention, due to its unique surrounding structure, has its center of gravity projected further away from the guide rail frame 10 on the horizontal plane. In addition, the approach surface 21 of the cage 20 is coplanar with the mounting surface 11 of the guide rail frame 10, which makes it easier for the cage 20 to generate a deflection moment around the guide rail frame 10 when affected by internal load movement, external wind load, or start-stop acceleration and deceleration during operation, thus making it easier to affect the stability of the cage 20 during operation.

[0051] Therefore, in addition to adding a traction anti-fall component 50 to improve the stability of the cage 20, Embodiment 3 of the present invention also provides another type of construction hoist. Unlike Embodiment 2, the construction hoist provided in Embodiment 3 further introduces a set of control logic based on multi-directional traction and active feedback, aiming to give the construction hoist the ability to actively maintain the stability of the cage 20's attitude, thereby further ensuring the safety and stability of the cage 20 during operation.

[0052] Specifically, the construction hoist provided in Embodiment 3 of the present invention further includes a posture detection component (not shown in the figure) and a control system (not shown in the figure).

[0053] The attitude detection component is used to detect the attitude data of the cage 20 during reciprocating movement. Both the attitude detection component and the aforementioned traction motor 511 are communicatively connected to the control system. The control system is configured to dynamically adjust the output torque of each traction motor 511 based on the attitude data detected by the attitude detection component.

[0054] Specifically, the attitude detection component can be an inertial measurement unit (IMU) that integrates detection devices such as a three-axis accelerometer and a three-axis gyroscope. It can be fixedly installed at the top center of the cage 20 to detect the pitch angle, roll angle, and corresponding pitch and roll angular velocities of the cage 20 in real time during its movement. Alternatively, a high-precision tilt sensor can also be used as the attitude detection component.

[0055] The core of the control system's algorithm logic is a multi-input multi-output closed-loop controller. Its workflow is as follows: a. Signal Acquisition and Processing: During the continuous movement of the hoist cage 20, the control system reads raw attitude data from the attitude detection component at a fixed frequency (e.g., 100Hz). The raw attitude data includes the hoist cage 20's raw pitch angle θ, roll angle φ, and corresponding pitch angular velocity ω. θ With roll angular velocity ω φ .

[0056] Subsequently, the control system filters and fuses the original attitude data using digital filtering algorithms (such as Kalman filtering) to eliminate vibration noise and calculates the actual attitude data of the hoisting cage 20 in real time. The actual attitude data includes the actual pitch angle θ', roll angle φ', and the corresponding pitch angular velocity ω. θ 'With roll angular velocity ω φ '.

[0057] b. Attitude deviation calculation: The control system compares the actual pitch angle θ' and roll angle φ' of the cage 20 with the preset balance attitude angle (set to 0°) to calculate the pitch angle deviation Δθ and roll angle deviation Δφ of the cage 20.

[0058] Among them, the pitch angle deviation Δθ = θ' - 0°; the roll angle deviation Δφ = φ' - 0°.

[0059] c. Calculate the required correction torque: The control system is based on a proportional-derivative (PD) control law, and independently calculates the required pitch correction torque component M for both pitch and roll degrees of freedom. θ and the roll correction torque component M φ .

[0060] Among them, the pitch correction torque component M θ The calculation formula is: M θ =Kp1 * Δθ +Kd1 * ωθ'; In the above formula, Kp1 and Kd1 are the proportional gain coefficient and differential gain coefficient of the pitch control channel, respectively.

[0061] Roll correction torque component M φ The calculation formula is: M φ =Kp2 * Δφ + Kd2 * ωφ'; In the above formula, Kp2 and Kd2 are the proportional gain coefficient and differential gain coefficient of the roll control channel, respectively.

[0062] d. Spatial torque synthesis and distribution: Based on the three-dimensional geometric model of the cage 20, the control system calculates the pitch correction torque component M. θ and the roll correction torque component M φ Vector synthesis is performed to obtain the total spatial corrective torque vector acting on the cage 20. Subsequently, based on the fixed position coordinates of the three traction points on the left, right, and rear sides of the cage 20, the control system uses the principle of statics to inversely decompose the total spatial corrective torque vector into the additional torque adjustment amount, ΔT, required by each of the three traction motors 511. 左 ΔT 右 With ΔT 后 Specifically, the decomposition yields ΔT. 左 ΔT 右 With ΔT 后 The process is based on the three-dimensional geometric model of the cage 20 and is achieved by solving the force balance equations formed by the positions of the three traction points.

[0063] e. Torque command generation and execution: The control system obtains ΔT from the above calculations. 左 ΔT 右 With ΔT 后This is superimposed on the preset reference static torque T0 of each traction motor 511 to maintain the tension of the traction rope 52, generating the final real-time target torque command for the three traction motors 511: T 左 =T0+ΔT 左 ;T 右 =T0+ΔT 右 ;T 后 =T0+ΔT 后 These target torque commands are sent to the servo drives of each traction motor 511 via the control system. The servo drives the corresponding traction motor 511 to precisely output the target torque, thereby applying a coordinated and precise active corrective torque to the cage 20 through the three traction ropes 52, enabling the cage 20 to quickly counteract disturbances and smoothly maintain or return to a horizontal attitude.

[0064] Through the above process, the construction hoist can sense and actively suppress the attitude disturbance of the cage 20 caused by internal load movement, external wind load or start-stop acceleration and deceleration in real time, turning the passive suspension of the cage 20 into active stability control, which significantly improves the running stability, safety and riding comfort of the cage 20.

[0065] It should be noted that, in the embodiments provided by this invention, since the hoisting mechanism 51 rises and falls together with the cage 20, the length of each traction rope 52 is directly related to the displacement of the cage 20. While generating real-time target torque commands, the control system can also synchronously control the rotational speed of each traction motor 511 based on the real-time position information of the cage 20, so that the speed of the traction rope 52 is matched with the lifting and lowering speed of the cage 20. This ensures that the traction rope 52 is always under appropriate tension while achieving active attitude stability.

[0066] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A construction hoist, characterized in that, include: The guide rail has a mounting surface for connecting the wall mount; The cage is attached to the guide rail frame and can reciprocate along the guide rail frame; The cage has an access surface facing the building structure; The mounting surface and the approach surface are coplanar.

2. The construction hoist according to claim 1, characterized in that, At least a portion of the structure of the cage is arranged around the guide rail frame.

3. The construction hoist according to claim 2, characterized in that, The projected outline of the cage in the horizontal plane is U-shaped or C-shaped; the guide rail frame is located within the space enclosed by the cage.

4. The construction hoist according to claim 3, characterized in that, The left, right, and rear sides of the guide rail frame are all provided with drive engagement parts; The cage is provided with drive components that correspond one-to-one with the drive engagement parts; the drive components are used to engage with the corresponding drive engagement parts to provide the cage with the driving force required to perform the reciprocating movement.

5. The construction hoist according to claim 4, characterized in that, The drive engagement part includes a drive rack disposed on the guide rail frame; The drive assembly includes a drive motor and a drive gear driven by the drive motor; the drive gear meshes with the drive rack.

6. The construction hoist according to claim 5, characterized in that, The drive assembly further includes a guide rail mounted on the guide rail frame; the drive assembly further includes a guide wheel or guide shoe that cooperates with the guide rail.

7. The construction hoist according to claim 1, characterized in that, It also includes a traction fall arrestor assembly; the traction fall arrestor assembly includes: The hoisting mechanism is fixedly mounted on the cage; A traction rope; a first end of the traction rope is connected to the winch mechanism; a second end of the traction rope opposite to the first end is connected to the top of the guide rail frame to apply an upward pulling force to the cage; The winch mechanism is used to wind up and unwind the traction rope during the reciprocating movement of the cage, so that the traction rope remains taut.

8. The construction hoist according to claim 7, characterized in that, There are three traction and fall protection components, which are respectively located on the left, right and rear sides of the cage.

9. The construction hoist according to claim 7 or 8, characterized in that, The hoisting mechanism includes: The traction motor is fixedly mounted on the cage; The drum is connected to the output end of the traction motor; the first end of the traction rope is connected to the drum.

10. The construction hoist according to claim 9, characterized in that, Also includes: An attitude detection component is used to detect the attitude data of the cage when it performs the reciprocating movement. The control system is configured to dynamically adjust the output torque of each of the traction motors based on the attitude data detected by the attitude detection component.

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