Lifting equipment

Abstract

This invention relates to the field of high-altitude work technology and provides a lifting device, including at least two tower sections assembled along the height direction and a lifting platform. The tower section includes a tower frame, a guide rail assembly, and a rack. The lengths of the guide rail assembly and the rack are adapted to the corresponding heights of the tower frame. The lifting platform is movably mounted on the guide rail assembly and is adapted to move up and down along the guide rail assembly. The lifting platform includes a car and a drive mechanism. The drive mechanism includes a power unit and zero-backlash rollers powered and coupled to the power unit. The zero-backlash rollers mesh with the rack. In this embodiment of the lifting device, by setting the zero-backlash roller and rack structure, the length of the rack and the length of the guide rail assembly can be designed according to the height of the tower frame. Therefore, the guide rails and racks of this lifting device can be simultaneously installed onto the tower frame from the ground. Furthermore, since the guide rails and racks can be installed on the ground, they can both be installed into the lifting channel inside the tower frame.

Description

Technical Field

[0001] This invention relates to the field of high-altitude operations technology, and more particularly to a lifting device. Background Technology

[0002] In existing high-altitude operations, lifting equipment, taking tower cranes as an example (hereinafter referred to as tower cranes), uses a lifting platform that moves along the tower frame to transport personnel or objects. Specifically, the tower frame is equipped with guide rails, and the lifting platform is movable and installed on the guide rails, moving along them. The tower frame is generally assembled in sections, with each section typically 2.8m or 3m high. Furthermore, the lifting mechanism relies on a gear and rack system. To ensure the meshing accuracy of the gear and rack, the gears and racks need to be machined according to standards. This results in a rack with a specific length, making it impossible to design a 2.8m or 3m rack. The resulting problem is that the rack length does not correspond to the height of each tower section, preventing the rack from being installed synchronously with the tower frame, and consequently, preventing the lifting platform and guide rails from being installed synchronously with the tower frame. Furthermore, because simultaneous installation is not possible, racks, guide rails, and elevators are often installed after the tower frame is assembled. This makes it inconvenient to install the racks inside the tower frame, and in reality, the racks, guide rails, and elevators are often installed on the outer surface of the tower frame. This results in a large overall space occupation for the tower crane, and a transfer platform needs to be set up on the tower frame to facilitate personnel access to and from the elevator. Moreover, the subsequent installation of racks, guide rails, and elevators also complicates the disassembly and assembly process of the tower crane. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in related technologies. To this end, this invention proposes a lifting device that, by setting a zero-backlash gear and rack structure, can ensure transmission accuracy even when the rack is not manufactured according to standard specifications. Furthermore, since the rack does not need to be manufactured according to standard specifications, it can be set to adapt to the tower body size, and it can ensure that the rack, guide rail, and lifting machine can all be installed into the interior of the tower body on the ground first.

[0004] A lifting device according to an embodiment of the present invention includes:

[0005] At least two tower sections are assembled along the height direction. Each tower section includes a tower frame, a guide rail assembly, and a rack. A lifting channel is formed inside the tower frame. The guide rail assembly and the rack are both fixed in the lifting channel and extend along the lifting channel. The lengths of the guide rail assembly and the rack are adapted to the height of the corresponding tower frame.

[0006] An elevator is located in a lifting channel and is movably mounted on the guide rail assembly and adapted to move up and down along the guide rail assembly. The elevator includes a car and a drive mechanism. The drive mechanism includes a power unit and a zero-backlash roller that is powered and coupled to the power unit. The zero-backlash roller meshes with the rack.

[0007] According to embodiments of the present invention, the lifting device, by setting a zero-backlash roller and rack structure, allows the length of the rack and the guide rail assembly to be designed according to the tower height. Consequently, the guide rail and rack of the lifting device can be simultaneously installed onto the tower from the ground. Furthermore, since the guide rail and rack can be installed on the ground, they can both be installed into the lifting channel inside the tower. Therefore, this type of lifting device not only improves ease of assembly and disassembly but also saves space.

[0008] According to one embodiment of the present invention, the guide rail assembly includes two parallel guide rails, each guide rail having a mounting groove, and the openings of the mounting grooves of the two guide rails being arranged opposite to each other.

[0009] The rack is located outside the mounting groove and connected to the side wall of the guide rail, or the rack is located inside the mounting groove and connected to the side wall of the guide rail; the surface of the rack facing away from the side wall has teeth that mesh with the zero-backlash roller.

[0010] According to one embodiment of the present invention, the elevator further includes:

[0011] Several back wheels are mounted on the car via a first wheel axle. The rack is located on one side of the side wall, and the back wheels are located on the other side of the side wall. The first wheel axle is parallel to the axis of rotation of the zero-backlash roller. The back wheels are adapted to adjust the gap value between the tooth surface and the zero-backlash roller.

[0012] According to one embodiment of the present invention, the driving mechanism includes:

[0013] The output gear is powered and coupled to the output end of the power unit. The output gear meshes with at least two of the zero-backlash rollers. All of the zero-backlash rollers are distributed along the height direction and mesh with the tooth surface.

[0014] According to one embodiment of the present invention, at least two of the back rollers are distributed along the height of the guide rail, and at least one of the back rollers is disposed above the zero-backlash rollers, and at least one of the back rollers is disposed below the plurality of zero-backlash rollers.

[0015] According to one embodiment of the present invention, an outward flange is provided at the edge of the mounting groove, the outward flange is integrated with the rack, and the end face of the outward flange facing away from the mounting groove has a toothed surface that meshes with the zero-backlash roller.

[0016] The elevator also includes:

[0017] Several guide wheel pairs, including two guide wheels arranged in parallel, the guide wheels are mounted on the car through a second wheel axle, an assembly gap is formed between the two guide wheels with the outer flange, and the two guide wheels are guided and engaged with two sides of the flange that are arranged opposite to it.

[0018] According to one embodiment of the present invention, the guide rail assembly further includes a connecting rod connected between the two guide rails, forming an installation space for the elevator between the connecting rod and the guide rails, and at least one of the connecting rod and the guide rails is fixed to the tower.

[0019] According to one embodiment of the present invention, the car includes:

[0020] The compartment has an internal carrying space;

[0021] A door, installed in the compartment and adapted to open and close the carrying space;

[0022] The installation compartment has an internal accommodating space, and the installation compartment is located above or below the body of the container. The drive mechanism is installed in the accommodating space.

[0023] A battery is electrically connected to the power unit, and the battery is installed in the housing space.

[0024] According to one embodiment of the present invention, the installation compartment is fixed to the bottom of the box body, a limit switch is installed on the outer wall of the installation compartment, and an electrical control box is also fixed inside the installation compartment. The electrical control box is electrically connected to the limit switch, and the electrical control box controls the power unit to stop working based on the triggering of the limit switch.

[0025] According to one embodiment of the present invention, the door body includes:

[0026] The first door is slidably installed on the upper part of the compartment;

[0027] The second door is slidably installed on the lower part of the compartment;

[0028] The first door and the second door are adapted to switch synchronously between the open state and the closed state of the accommodating space;

[0029] In the open state, the first door is at least partially located above the compartment, and the second door is at least partially located below the compartment;

[0030] In the closed state, the first door and the second door close the carrying space.

[0031] According to one embodiment of the present invention, the compartment is provided with a pulley, and a rope is wound around the pulley. The first end of the rope is fixedly connected to the first door, and the second end of the rope is fixedly connected to the second door. The compartment is provided with a door guide rail, and the first door and the second door are slidably mounted on the door guide rail. The door guide rail is provided with guide shoes corresponding to the first door and the second door, and the guide shoes are suitable for sliding positioning of the first door and the second door.

[0032] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a structural schematic diagram of the lifting device provided by the present invention in the closed state of the door;

[0035] Figure 2 This is a structural schematic diagram of the lifting device provided by the present invention in the open state of the door;

[0036] Figure 3 This is a schematic diagram of the guide rail assembly of the lifting device provided by the present invention;

[0037] Figure 4 This is a schematic diagram of the installation compartment and drive mechanism of the lifting device provided by the present invention;

[0038] Figure 5 This is a side view of the installation compartment and drive mechanism of the lifting device provided by the present invention;

[0039] Figure 6 This is a top view of the installation compartment and drive mechanism of the lifting device provided by the present invention;

[0040] Figure 7 yes Figure 6 A partial enlarged view of the lifting equipment is provided.

[0041] Figure label:

[0042] 110. Guide rail assembly; 1110. Guide rail; 1111. Side wall; 1112. Outward flange; 1120. Mounting slot; 1130. Connecting rod; 1140. Mounting space;

[0043] 120. Rack; 1210. Tooth surface;

[0044] 200. Elevator;

[0045] 210. Car; 2110. Car body; 2111. Pulley; 2112. Rope; 2113. Door guide rail; 2114. Guide shoe; 2121. First door; 2122. Second door; 2130. Installation compartment; 2131. Accommodation space; 2132. Battery; 2133. Electrical control box; 2134. Fall arrestor; 2135. Limit switch;

[0046] 220. Drive mechanism; 2210. Power unit; 2220. Zero-backlash roller; 2230. Rotary shaft; 2240. Output gear;

[0047] 230, back wheel; 240, first wheel axle; 250, guide wheel; 260, second wheel axle. Detailed Implementation

[0048] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0049] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0051] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] The following is combined Figures 1 to 7 The lifting device of the present invention is described.

[0054] The lifting device according to an embodiment of the present invention, please refer to Figure 1 and Figure 4The lifting equipment includes at least two tower sections (not shown in the figure) assembled along the height direction and a lift 200. The tower section includes a tower frame (not shown in the figure), a guide rail assembly 110 and a rack 120. A lifting channel (not shown in the figure) is formed inside the tower frame. The guide rail assembly 110 and the rack 120 are both fixed in the lifting channel and extend along the lifting channel. The lengths of the guide rail assembly 110 and the rack 120 are adapted to the height of their respective tower frames. The lift 200 is located in the lifting channel. The lift 200 is movably installed on the guide rail assembly 110 and is adapted to lift along the guide rail assembly 110. The lift 200 includes a car 210 and a drive mechanism 220. The drive mechanism 220 includes a power unit 2210 and a zero-backlash roller 2220 that is powered and coupled to the power unit 2210. The zero-backlash roller 2220 meshes with the rack 120.

[0055] The lifting device of this invention, by setting a zero-backlash roller 2220 and a rack 120 structure, allows the length of the rack 120 and the guide rail assembly 110 to be designed according to the tower height. Consequently, the guide rail 1110 and rack 120 of the lifting device can be simultaneously installed onto the tower from the ground. Since the guide rail 1110 and rack 120 can be installed on the ground, they can also be installed into the lifting channel inside the tower. Therefore, this type of lifting device not only improves the ease of assembly and disassembly but also saves space.

[0056] Furthermore, traditional lifting equipment is installed on the outside of the tower, making the lift a cantilever structure relative to the tower. For safety reasons, this requires stricter requirements on the lift's dimensions, weight, and installation space. In contrast, the lifting equipment of this invention is installed inside the tower, offering greater flexibility in terms of dimensions, weight, and installation space. It also eliminates the need for a conversion platform for easy access to and from the tower crane, significantly improving operational efficiency. Moreover, the zero-backlash rack 120 and zero-backlash roller 2220 transmission system constitute a high-efficiency transmission structure with high transmission efficiency and low noise.

[0057] According to one embodiment of the present invention, please refer to Figure 1 , Figure 3 and Figure 5 The guide rail assembly 110 includes two parallel guide rails 1110, each guide rail 1110 having a mounting groove 1120, and the openings of the mounting grooves 1120 of the two guide rails 1110 being arranged opposite to each other; the rack 120 is located outside the mounting groove 1120 and connected to the side wall 1111 of the guide rail 1110, and the surface of the rack 120 facing away from the side wall 1111 has a tooth surface 1210 that meshes with the zero backlash roller 2220.

[0058] It is understood that the rack 120 is located outside the mounting groove 1120 and connected to the side wall 1111 of the guide rail 1110. The rack 120 can be fixedly connected to the side wall 1111, detachably connected to the side wall 1111, or the rack 120 and the side wall 1111 of the guide rail 1110 can be integrally formed. When the rack 120 and the side wall 1111 of the guide rail 1110 are integrally formed, the installation space required for the connection between the guide rail 1110 and the rack 120 does not need to be considered, and the compactness between the guide rail 1110 and the rack 120 is better.

[0059] The mounting groove 1120 of the guide rail 1110 includes two side walls 1111, as shown in the figure. Figure 3 The rack 120 is connected to the front side wall 1111. Of course, the rack 120 can also be connected to the rear side wall 1111.

[0060] It is understandable that when the rack 120 is installed outside the mounting slot 1120, the zero-backlash roller 2220 is correspondingly outside the mounting slot 1120, so that when the lifting equipment needs maintenance and inspection, it is convenient for staff to check the condition of the zero-backlash roller 2220 in a timely manner.

[0061] Understandably, the roller pin on the zero-backlash roller 2220 can rotate freely and flexibly when it meshes with the tooth surface 1210 of the rack 120. While ensuring meshing accuracy, this increases the passability of the zero-backlash roller 2220 on the guide rail 1110 and reduces meshing wear.

[0062] According to one embodiment of the present invention, the rack 120 is located inside the mounting groove 1120 and connected to the side wall 1111 of the guide rail 1110, and the surface of the rack 120 facing away from the side wall 1111 is formed with a tooth surface 1210 that meshes with the zero backlash roller 2220.

[0063] Understandably, when the rack 120 is installed inside the mounting slot 1120, the zero-backlash roller 2220 is correspondingly inside the mounting slot 1120. The zero-backlash roller 2220, installed inside the mounting slot 1120, is less prone to lateral displacement (please refer to [reference here] for lateral movement). Figure 6 As shown, the lifting device can limit the left and right sides of the zero-backlash roller 2220 without any other components.

[0064] In one embodiment of the present invention, the guide rail 1110 is made of aluminum alloy extrusion molding, and the rack 120 is made of steel rack 120. The steel rack 120 and the aluminum alloy guide rail 1110 are connected, which can ensure higher precision in processing dimensions. The steel rack 120 can also be fixed to the aluminum alloy guide rail 1110 by thread connection or riveting.

[0065] According to an embodiment of the present invention, reference Figure 7The elevator 200 also includes several back wheels 230, which are mounted on the car 210 via a first wheel axle 240. The rack 120 is located on one side of the side wall 1111, and the back wheels 230 are located on the other side of the side wall 1111. The first wheel axle 240 and the shaft 2230 of the zero-backlash roller 2220 (see reference) Figure 4 Parallel, the back roller 230 is adapted to adjust the gap value between the tooth surface 1210 and the zero backlash roller 2220.

[0066] It is understandable that the first wheel shaft 240 and the rotating shaft 2230 are parallel. When the zero-backlash roller 2220 meshes with the rack 120, the backlash roller 230 can play a role in clamping and eliminating backlash. For example, please refer to... Figure 5 The rack 120 is outside the mounting groove 1120, and the back roller 230 is located inside the mounting groove 1120. The back roller 230 presses the tooth surface 1210 of the rack 120 and the zero-backlash roller 2220 together to eliminate backlash. Of course, the mounting positions of the back roller 230 and the zero-backlash roller 2220 are not limited to the example given here.

[0067] Understandably, there can be multiple back rollers 230, as multiple back rollers 230 are more effective in adjusting the gap between the gear surface 1210 and the zero-backlash roller 2220. In addition to adjusting the gap between the rack 120 and the zero-backlash roller 2220, the back rollers 230 can also act as traveling wheels to guide the movement and ensure that the elevator 200 runs smoothly and stably along the guide rail 1110.

[0068] According to an embodiment of the present invention, reference Figure 4 and Figure 5 The drive mechanism 220 includes an output gear 2240, which is poweredly coupled to the output end of the power unit 2210. The output gear 2240 meshes with at least two zero-backlash rollers 2220. All zero-backlash rollers 2220 are distributed along the height direction and mesh with the tooth surface 1210.

[0069] Understandably, the output gear 2240 uses a bridge gear structure and meshes with the zero-backlash roller 2220 gear transmission. Please refer to... Figure 4 and Figure 5 The power unit 2210 is coupled to output gear 2240, which meshes with two zero-backlash rollers 2220 for transmission. The two zero-backlash rollers 2220 mesh with rack 120 to form a triangular support structure. The meshing stability of the zero-backlash rollers 2220 is high, which enhances the transmission stability of the lifting equipment. In addition, the synchronous meshing of the two zero-backlash rollers 2220 reduces the pressure on a single tooth on rack 120 of guide rail 1110, and extends the service life of zero-backlash rollers 2220 and rack 120.

[0070] Understandably, the number of zero-backlash rollers 2220 can be three or more, and a larger number can improve meshing reliability. Of course, the more zero-backlash rollers 2220 there are, the higher the meshing accuracy requirement for multiple zero-backlash rollers 2220 will be, and correspondingly, the number of back rollers 230 or the number of output gears 2240 should also be increased.

[0071] It should be noted that the number of output gears 2240 can be one, that is, an output gear 2240 is only provided on one side of the car 210, but the number of output gears 2240 can also be two, thus... Figure 6 In this configuration, the power unit 2210 can simultaneously output power to the left and right sides, ensuring the stability of the car 210 during lifting and lowering and preventing the car 210 from tilting left or right. The power unit 2210 can be in the form of an electric motor.

[0072] According to one embodiment of the present invention, at least two back rollers 230 are distributed along the height of the guide rail 1110, and at least one back roller 230 is disposed above the zero back clearance roller 2220, and at least one back roller 230 is disposed below the plurality of zero back clearance rollers 2220.

[0073] Understandably, when there is only one zero-backlash roller 2220, two back rollers 230 can be provided, one above and one below the zero-backlash roller 2220. In this case, the two back rollers 230 and the zero-backlash roller 2220 form a supporting triangular structure, resulting in high meshing stability of the zero-backlash roller 2220. Furthermore, when there are multiple zero-backlash rollers 2220, at least one back roller 230 is positioned above the zero-backlash roller 2220, and at least one back roller 230 is positioned below the multiple zero-backlash rollers 2220. In this case, the back roller 230 and the multiple zero-backlash rollers 2220 form a supporting trapezoidal structure, further enhancing the meshing stability of the zero-backlash rollers 2220.

[0074] According to one embodiment of the present invention, in combination Figure 3 and Figure 7 An outward flange 1112 is provided at the edge of the mounting groove 1120. The outward flange 1112 integrates a rack 120, and the end face of the outward flange 1112 facing away from the mounting groove 1120 forms a toothed surface 1210 that meshes with the zero-backlash roller 2220. The elevator 200 also includes several guide wheel pairs, including two parallel guide wheels 250. The guide wheels 250 are mounted on the car 210 through a second wheel axle 260. An assembly gap of the outward flange 1112 is formed between the two guide wheels 250, and the two guide wheels 250 are guided and engaged with two sides opposite to the flange.

[0075] It is understandable that an outward flange 1112 is provided at the edge of the mounting groove 1120. The outward flange 1112 can be flanged forward, flanged backward, or there can be two outward flanges 1112 in both the forward and backward directions. A toothed surface 1210 that mates with the zero-backlash roller 2220 can be provided on the end face of at least one of the outward flanges 1112. The outward flange 1112 integrates a rack 120, which can further simplify processing and save space. In particular, setting the toothed surface 1210 on the forward-facing outward flange 1112 is more conducive to the spatial distribution of components.

[0076] Based on this, the outer flange 1112 and the guide wheel pair are aligned. Please refer to... Figure 7 The guiding mechanism includes two guide wheels 250, which are arranged opposite to the flange on two sides. Through the guiding and limiting effect of the guide wheels 250 on the outer flange 1112 in the left and right directions, the car 210 can be effectively prevented from tilting left and right, ensuring that the elevator 200 runs smoothly along the guide rail 1110 and the car 210 is stable during the lifting process.

[0077] Furthermore, there can be multiple guide wheel sets. For example, with two guide wheel sets, the guide wheel sets are located above and below the zero-backlash roller 2220, respectively, resulting in greater stability of the car 210 and further enhancing the stability of the lifting equipment. Of course, the number of guide wheel sets is not limited to the example given here.

[0078] According to one embodiment of the present invention, please refer to Figure 3 The guide rail assembly 110 also includes a connecting rod 1130 connected between two guide rails 1110. The connecting rod 1130 is U-shaped and forms an installation space 1140 for the elevator 200 between the connecting rod 1130 and the guide rails 1110. At least one of the connecting rod 1130 and the guide rails 1110 is fixed to the tower.

[0079] It is understood that the connecting rod 1130 serves as a connecting support for the guide rails 1110 on both sides, and also acts as an attachment structural component connecting to the tower. Each guide rail section 1110 has multiple connecting rods 1130. These multiple connecting rods 1130 and guide rails 1110 are pre-installed on the tower. Simultaneously, the guide rails 1110 and connecting rods 1130 are installed in place at the same time as the tower installation. The spacing of the connecting rods 1130 may be uneven; for example, the spacing of the connecting rods 1130 at the joint between two guide rail sections 1110 may be smaller than the spacing of the connecting rods 1130 within the same guide rail section 1110. Please refer to [reference needed]. Figure 1 Connecting rods 1130 are provided at both ends of a guide rail 1110. After the two guide rails 1110 are spliced, the distance between the connecting rods 1130 of the first guide rail 1110 and the connecting rods 1130 of the second guide rail 1110 is small, which improves the connection stability between the two guide rails 1110.

[0080] According to one embodiment of the present invention, please refer to Figure 1 , Figure 4 and Figure 6 The car 210 includes a body 2110, doors (refer to the first door 2121 and the second door 2122), an installation compartment 2130, and a battery 2132. The body 2110 has an internal carrying space; the doors are installed on the body 2110 and are adapted to open and close the carrying space; the installation compartment 2130 has an internal receiving space 2131, located above or below the body 2110, and a drive mechanism 220 is installed in the receiving space 2131; the battery 2132 is electrically connected to a power unit 2210 and is installed in the receiving space 2131.

[0081] It is understandable that the installation compartment 2130 can be located above or below the body 2110. When the installation compartment 2130 is located below the body 2110, the elevator 200 can fully utilize the space at the top of the elevator 200, that is, the elevator 200 can rise to the highest position of the guide rail 1110.

[0082] Understandably, the battery 2132, located in the housing space 2131 of the installation compartment 2130, supplies power to the power unit 2210, driving the output gear 2240 to rotate. The output gear 2240 then drives two zero-backlash rollers 2220 and the rack 120 on the guide rail 1110 to mesh and rotate, thereby driving the lift to move up and down. Traditional gear and rack 120 lifting devices require cable power supply, which carries the risk of cable snagging and tangling, affecting operation. The lifting device of this invention uses battery 2132 power supply, eliminating the need for cables and completely solving the risk of cable snagging and tangling.

[0083] According to one embodiment of the present invention, the installation compartment 2130 is fixed to the bottom of the box body 2110, a limit switch 2135 is installed on the outer wall of the installation compartment 2130, and an electrical control box 2133 is also fixed inside the installation compartment 2130. The electrical control box 2133 is electrically connected to the limit switch 2135, and the electrical control box 2133 stops the power unit 2210 from working based on the triggering of the limit switch 2135.

[0084] It is understood that the installation compartment 2130 is equipped with a limit switch 2135, which allows operators to control the start and stop of the elevator 200 in case of emergency. The installation compartment 2130 also integrates a fall arrestor 2134, as described in one embodiment of the invention. Figure 6The power unit 2210 and the fall arrestor 2134 are respectively engaged with the racks 120 on both sides for transmission. The racks 120 engaged with the drive unit bear the normal operating load, and the racks 120 engaged with the fall arrestor 2134 bear the impact load in the event of an accidental fall. This increases the safety of the equipment while reducing the wear of the racks 120.

[0085] It should be noted that when the battery 2132 has less than 15% charge, the electrical control box 2133 controls the drive mechanism 220 of the elevator 200, so that the elevator 200 can only descend, thereby ensuring the safety of the workers.

[0086] According to one embodiment of the present invention, the door includes a first door body 2121 and a second door body 2122. The first door body 2121 is slidably mounted on the upper part of the compartment 2110; the second door body 2122 is slidably mounted on the lower part of the compartment 2110; the first door body 2121 and the second door body 2122 are adapted to synchronously switch between an open state and a closed state of the accommodating space 2131; in the open state, please refer to... Figure 2 The first door 2121 is at least partially located above the compartment 2110, and the second door 2122 is at least partially located below the compartment 2110; in the closed state, please refer to... Figure 1 The first door 2121 and the second door 2122 close the load-bearing space.

[0087] The car 210 has a modular structure, and the door opens via a linkage mechanism of upper and lower halves, without occupying internal space when open. Understandably, the elevator 200 is located within the tower structure, eliminating the need for a transfer platform. Compared to rotating doors, sliding doors are safer.

[0088] In some embodiments, please refer to Figure 2 The first door 2121 and the second door 2122 of the elevator 200 have similar weight and size. This makes it easier to synchronously switch between the open and closed states of the accommodating space 2131. Compared to solutions with only the first door 2121 or only the second door 2122, using a solution with similar weight and size effectively reduces the counterweight required to open the doors. The first door 2121 and the second door 2122 can act as counterweights for each other, effectively improving the load-bearing capacity of the elevator 200 and enhancing safety.

[0089] According to one embodiment of the present invention, the compartment 2110 is provided with a pulley 2111, and a rope 2112 is wound around the pulley 2111. The first end of the rope 2112 is fixedly connected to the first door 2121, and the second end of the rope 2112 is fixedly connected to the second door 2122. The compartment 2110 is provided with a door guide rail 2113. The first door 2121 and the second door 2122 are slidably mounted on the door guide rail 2113. The door guide rail 2113 is provided with guide shoes 2114 corresponding to the first door 2121 and the second door 2122. The guide shoes 2114 are suitable for sliding and positioning the first door 2121 and the second door 2122.

[0090] Understandably, the first door body 2121 and the second door body 2122 can achieve synchronous opening and closing through a simple structure of pulleys 2111 and ropes 2112. The first door body 2121 and the second door body 2122 slide along the door guide rail 2113. The guide shoe 2114 is a sliding nylon block between the door guide rail 2113 and the door body. It can fix the door body on the door guide rail 2113, allowing the door body to move only up and down. The upper part of the guide shoe 2114 is also equipped with an oil cup. The lubricating oil provided by the oil cup can reduce the friction between the shoe liner and the guide rail 1110.

[0091] According to one embodiment of the present invention, the height of a single tower section is 2.6m-3.2m, and the lengths of the guide rail assembly 110 and the rack 120 are equal to the height of the tower on which they are installed.

[0092] It is understandable that tower heights are typically 2.6m, 2.8m, 3.0m, and 3.2m. When using traditional rack and pinion drives, due to their design principles, the rack length cannot be designed to be 2.6m, 2.8m, 3.0m, or 3.2m. Therefore, the installation of a rack and pinion hoist must be carried out after the tower crane is installed, and the hoist must be disassembled before the tower crane is disassembled. However, the guide rail 1110 and rack 120 of this invention are custom-designed according to the tower height. The guide rail 1110 can be pre-installed on the tower on the ground, and can be installed synchronously during tower installation, which is very convenient. The tower is also disassembled synchronously with the tower body, resulting in high efficiency.

[0093] Finally, it should be noted that the above embodiments are only for illustrating the present invention and not for limiting the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A lifting device, characterized in that, include: At least two tower sections are assembled along the height direction. The tower section includes a tower frame, a guide rail assembly (110), and a rack (120). A lifting channel is formed inside the tower frame. The guide rail assembly (110) and the rack (120) are both fixed in the lifting channel and extend along the lifting channel. The lengths of the guide rail assembly (110) and the rack (120) are adapted to the height of the corresponding tower frame. An elevator (200) is located in the lifting channel. The elevator (200) is movably mounted on the guide rail assembly (110) and is adapted to lift along the guide rail assembly (110). The elevator (200) includes a car (210) and a drive mechanism (220). The drive mechanism (220) includes a power unit (2210) and a zero-backlash roller (2220) that is powered and coupled to the power unit (2210). The zero-backlash roller (2220) meshes with the rack (120). The guide rail assembly (110) includes two parallel guide rails (1110), each guide rail (1110) having a mounting groove (1120), and the openings of the mounting grooves (1120) of the two guide rails (1110) being arranged opposite to each other. The rack (120) is located outside the mounting groove (1120) and connected to the side wall (1111) of the guide rail (1110); the surface of the rack (120) facing away from the side wall (1111) has a tooth surface (1210) that meshes with the zero backlash roller (2220).

2. The lifting device according to claim 1, characterized in that, The elevator (200) also includes: A plurality of back wheels (230) are mounted on the car (210) via a first wheel axle (240). The rack (120) is located on one side of the side wall (1111), and the back wheels (230) are located on the other side of the side wall (1111). The first wheel axle (240) is parallel to the shaft (2230) of the zero-backlash roller (2220). The back wheels (230) are adapted to adjust the gap value between the tooth surface (1210) and the zero-backlash roller (2220).

3. The lifting device according to claim 2, characterized in that, The drive mechanism (220) includes: The output gear (2240) is powered and coupled to the output end of the power unit (2210). The output gear (2240) meshes with at least two of the zero-backlash rollers (2220). All of the zero-backlash rollers (2220) are distributed along the height direction and mesh with the tooth surface (1210).

4. The lifting device according to claim 3, characterized in that, At least two of the back rollers (230) are distributed along the height of the guide rail (1110), and at least one of the back rollers (230) is positioned above all the zero-backlash rollers (2220), and at least one of the back rollers (230) is positioned below all the zero-backlash rollers (2220).

5. The lifting device according to claim 1, characterized in that, An outward flange (1112) is provided at the edge of the mounting groove (1120). The outward flange (1112) integrates the rack (120), and the end face of the outward flange (1112) facing away from the mounting groove (1120) forms the tooth surface (1210) that meshes with the zero backlash roller (2220). The elevator (200) also includes: A plurality of guide wheel pairs, including two guide wheels (250) arranged in parallel, the guide wheels (250) being mounted on the car (210) via a second wheel axle (260), an assembly gap of the outer flange (1112) being formed between the two guide wheels (250), and the two guide wheels (250) and the two sides of the outer flange (1112) being arranged opposite to each other for guide engagement.

6. The lifting device according to any one of claims 1 to 5, characterized in that, The guide rail assembly (110) further includes a connecting rod (1130) connecting the two guide rails (1110), forming an installation space (1140) for the elevator (200) between the connecting rod (1130) and the guide rails (1110), and at least one of the connecting rod (1130) and the guide rails (1110) is fixed to the tower.

7. The lifting device according to any one of claims 1 to 5, characterized in that, The car (210) includes: The compartment (2110) has an internal carrying space; A door, installed in the compartment (2110) and adapted to open and close the carrying space; The installation compartment (2130) has an internal accommodating space (2131). The installation compartment (2130) is located above or below the body (2110). The drive mechanism (220) is installed in the accommodating space (2131). The battery (2132) is electrically connected to the power unit (2210), and the battery (2132) is installed in the housing space (2131).

8. The lifting device according to claim 7, characterized in that, The installation compartment (2130) is fixed to the bottom of the body (2110). A limit switch (2135) is installed on the outer wall of the installation compartment (2130). An electrical control box (2133) is also fixed inside the installation compartment (2130). The electrical control box (2133) is electrically connected to the limit switch (2135), and the electrical control box (2133) controls the power unit (2210) to stop working based on the triggering of the limit switch (2135).

9. The lifting device according to claim 7, characterized in that, The door body includes: The first door (2121) is slidably installed on the upper part of the compartment (2110); The second door (2122) is slidably installed on the lower part of the compartment (2110); The first door (2121) and the second door (2122) are adapted to switch synchronously between the open state and the closed state of the accommodating space (2131); In the open state, the first door (2121) is at least partially located above the compartment (2110), and the second door (2122) is at least partially located below the compartment (2110); In the closed state, the first door (2121) and the second door (2122) close the carrying space.

10. The lifting device according to claim 9, characterized in that, The compartment (2110) is provided with a pulley (2111), and a rope (2112) is wound around the pulley (2111). The first end of the rope (2112) is fixedly connected to the first door (2121), and the second end of the rope (2112) is fixedly connected to the second door (2122). The compartment (2110) is provided with a door guide rail (2113). The first door (2121) and the second door (2122) are slidably installed on the door guide rail (2113). The door guide rail (2113) is provided with guide shoes (2114) corresponding to the first door (2121) and the second door (2122). The guide shoes (2114) are suitable for sliding positioning of the first door (2121) and the second door (2122).

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