A special maintenance tool for elevator traction machine
Patent Information
- Application Number
- CN202522102584.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2035-09-29
AI Technical Summary
[0002]电梯曳引主机作为电梯的核心动力源，承担着驱动轿厢与对重升降、传递额定载荷的关键功能，其运行可靠性直接决定电梯的安全与效率；该主机通常集成曳引轮、制动器、减速器、电机定子转子等精密部件，长期处于高负荷、变工况运行状态；所以电梯曳引主机需要经常性的进行检修，对于一般性的问题，无需对曳引主机进行拆解，直接在原位上进行维修即可；但是对于较大的维修更换，则需要将曳引主机或其中的主要部件拆除后单独在修理车间对其进行维修
本实用新型提供的一种电梯曳引主机专业维修工具，针对曳引主机拆卸后的悬吊维修用的悬吊架进行改进，在悬吊架底座设置由倾角传感器或水平传感器的水平检测组件，在悬吊前精准捕捉悬吊架整体的水平状态，并由水平调节组件对悬吊架进行水平校正，确保对曳引主机进行悬吊过程中，悬吊主机处于水平，防止因悬吊架水平失衡导致的悬吊重心偏移，造成悬吊架倾倒；
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Figure CN224768215U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of elevator maintenance technology, specifically relating to a special maintenance tool for elevator traction main units. Background Technology
[0002] As the core power source of an elevator, the elevator traction machine plays a crucial role in driving the car and counterweight, and transmitting the rated load. Its operational reliability directly determines the safety and efficiency of the elevator. This machine typically integrates precision components such as the traction sheave, brake, reducer, and motor stator and rotor, and operates under high load and variable conditions for extended periods. Therefore, the elevator traction machine requires frequent maintenance. For general problems, there is no need to disassemble the traction machine; repairs can be performed directly in its original location. However, for major repairs or replacements, the traction machine or its main components must be removed and repaired separately in a repair shop.
[0003] Elevator traction units are heavy, so for comprehensive maintenance, they need to be suspended at a certain height on a specialized suspension frame to facilitate component disassembly and replacement or repairs involving the bottom. Current maintenance suspension frames mainly consist of a main supporting steel frame and a hoist, which lifts and suspends the traction unit. However, these suspension frames often neglect to assess the overall balance of the suspension frame before lifting. If the suspension frame is not completely level, the weight of the traction unit can cause it to tip over along with the traction unit during suspension due to a shift in the center of gravity, leading to an accident. Summary of the Invention
[0004] This utility model provides a special maintenance tool for elevator traction main unit, which is specifically used for suspension during maintenance after disassembly of the traction main unit. The base of the maintenance suspension bracket is equipped with an angle sensor to detect the overall horizontal state of the suspension bracket before lifting and suspension. The overall horizontal state of the suspension bracket can be adjusted by the horizontal adjustment component set under the base, so as to avoid the center of gravity deviating due to the horizontal imbalance of the suspension bracket during the suspension of the traction main unit.
[0005] To achieve the above-mentioned technical objectives, this utility model is implemented through the following technical solution: A special maintenance tool for elevator traction main units includes: Base; Two steel columns are installed as the top beams, vertically and symmetrically arranged on both sides of the upper surface of the base; The crossbeam steel is horizontally installed at the upper end of the two top beam steel columns; Two sets of suspension traction components are provided, symmetrically arranged on the two top beam steel columns respectively; the suspension traction components serve as the suspension lifting drive source; A steel cable, the first end of which is coiled around the suspension and transfer assembly, and the second end of which passes over a pulley disposed below the crossbeam steel; A suspension hook is provided on the second end of the steel cable; used to suspend the traction column machine; A horizontal detection component is centrally located on the upper surface of the base; the horizontal detection component is communicatively connected to the input terminal of the processor. At least four horizontal adjustment components are provided, each located at one of the four corners below the base. The horizontal adjustment components are communicatively connected to the output of the processor. The horizontal adjustment components are used to correct and adjust the overall horizontal state of the suspension frame.
[0006] Preferably, the level detection component is configured as a tilt sensor or a level sensor; the tilt sensor or level sensor is communicatively connected to the input terminal of the processor.
[0007] Preferably, the leveling component includes: Two sets of sliding seats are symmetrically arranged. A fixing plate is fixedly installed on the upper surface of the two sets of sliding seats; A sliding plate is slidably disposed on the upper surface of the two sets of sliding seats; Two sets of movable cross frames are symmetrically arranged; the lower ends of the two sets of movable cross frames are respectively hinged to the first and second ends of the fixed plate and the sliding plate; the upper ends of the two sets of movable cross frames are slidably disposed on the lower surface of the base. A rotating bushing is disposed between the two sets of sliding seats; A threaded sleeve is disposed below the sliding plate; The lead screw has a first end rotatably mounted inside the rotating shaft sleeve, and a second end passing through the threaded sleeve. The lead screw and the threaded sleeve are connected by a thread. A lead screw motor, wherein the rotor of the lead screw motor is connected to the second end of the lead screw.
[0008] Preferably, a sliding plate embedding groove is formed on the upper surface of the sliding seat; an embedding block is provided below the sliding plate; The embedding block is movably disposed within the sliding plate embedding groove; with the cooperation of the embedding block and the sliding embedding groove, the sliding plate can slide horizontally relative to the sliding seat but has no vertical movement.
[0009] Preferably, an inner groove is formed on the bottom surface of the base and near each of the two sides of the base; Each of the two sets of inner grooves is provided with a sliding rod; A sliding sleeve is slidably mounted on the slide rod; The upper end of the movable cross frame is hinged to the lower part of the sliding sleeve.
[0010] Preferably, an anti-detachment plate is hinged to the suspension hook; The second end of the anti-detachment plate has a slot, and the slot at the second end of the anti-detachment plate overlaps with the end near the suspension hook. An elastic ring is provided between the anti-detachment plate and the inner side of the suspension hook.
[0011] Preferably, a through-hole groove is formed near the second end of the anti-detachment plate, and on both the first and second sides of the anti-detachment plate. The detachable insertion pin is located inside the circular through-slot. An electromagnet is installed on the outside of the circular through-hole groove on the second side of the anti-detachment plate; The end of the pin is configured as a magnetic metal block; The end of the pin is inserted and then contacts the electromagnet.
[0012] Preferably, the suspension traction assembly includes: The back plate has two winding roller mounting plates symmetrically arranged on the inner side of each of the two back plates; the outer sides of the two back plates are respectively arranged on the two top beam steel columns. A steel cable winding roller is rotatably positioned between two sets of winding roller mounting plates; An electric motor, wherein the rotor of the electric motor is connected to one end of the cable winding roller.
[0013] Preferably, a back plate sleeve is provided on the outer side of the back plate, and the back plate sleeve is movably mounted on the top beam steel column; Threaded holes are opened on the outer side of the back plate sleeve, and several threaded holes are also opened at equal intervals on the outer side of the top beam steel column. The back plate sleeve is fastened to the top beam steel column by bolts and nuts.
[0014] Preferably, a pulley mounting plate is provided below the crossbeam steel, and a plurality of bolt holes are equally spaced on the pulley mounting plate; The pulley is provided with pulley rods on both sides, and the pulley is rotatably mounted at the lower end of the pulley rods; Bolt holes are also provided at the upper end of the pulley rod, and the pulley rod and the pulley mounting plate are fastened together by bolts and nuts.
[0015] Preferably, two sets of channel steels are movably arranged on the upper surface of the base; the elevator traction machine is placed on the channel steels; Two symmetrical channel steel grooves are formed on the upper surface of the base; An embedded slider is provided on the bottom surface of the channel steel and near both ends of the channel steel, and the embedded slider is slidably disposed in the channel steel groove.
[0016] The beneficial effects of this utility model are: This utility model provides a professional maintenance tool for elevator traction main units. It improves the suspension frame used for suspension maintenance after the traction main unit is disassembled. The suspension frame base is equipped with a horizontal detection component with an inclination sensor or a level sensor. Before suspension, the overall horizontal state of the suspension frame is accurately captured. The horizontal adjustment component corrects the horizontality of the suspension frame, ensuring that the traction main unit is horizontal during the suspension process. This prevents the suspension frame from tilting due to the center of gravity shifting caused by the horizontal imbalance of the suspension frame. The suspension hook is hinged with an anti-detachment plate, and an elastic ring is installed between the anti-detachment plate and the suspension hook. Under the action of the elastic ring, the anti-detachment plate can overlap with the end near the suspension hook. The anti-detachment plate isolates the opening of the suspension hook to prevent it from coming off during suspension. A pin is installed at the second end of the anti-detachment plate. The end of the pin can be locked under the action of an electromagnet. The pin further enhances the anti-detachment plate's anti-hooking protection function. The suspension traction assembly, consisting of a motor and a steel cable winding roller, is mounted on the top beam steel column in an adjustable manner via a back plate and a back plate sleeve. By adjusting the height of the suspension traction assembly, the position of the chassis center of gravity during suspension can be changed. Generally speaking, when suspending heavy objects, the lower the suspension drive point, the more stable the overall chassis center of gravity will be. The pulleys are adjustablely mounted on the pulley mounting plate via bolts. By adjusting the spacing between the pulleys, the position and distance between the two sets of suspension hooks can be adjusted according to the suspension point of the traction machine. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the suspension hook structure of this utility model; Figure 3 This is a schematic diagram of the anti-detachment plate structure installed on the suspension hook of this utility model. The left side shows the pin not being inserted into the correct position, and the right side shows the pin being inserted into the correct position and locked. Figure 4 This is a schematic diagram of one embodiment of the horizontal adjustment component of this utility model; Figure 5 This is a schematic diagram of one embodiment of the horizontal adjustment component of this utility model, which removes the movable cross frame. Figure 6This is a schematic diagram of the structure of the movable cross frame of this utility model, which is slidably connected to the bottom surface of the base; Figure 7 This is a schematic diagram of the structure of the pulley of this utility model installed below the crossbeam steel.
[0019] In the attached diagram, the structural names represented by each number are as follows: 1-Base, 101-Channel steel slide, 102-Slide rod, 103-Slide sleeve, 2-Channel steel, 3-Top beam steel column, 4-Crossbeam steel, 401-Pulley mounting plate, 5-Horizontal adjustment assembly, 501-Sliding seat, 5011-Sliding plate embedded groove, 502-Fixing plate, 503-Sliding plate, 504-Modible cross frame, 505-Screw, 5051-Rotating shaft sleeve, 5052-Threaded mating sleeve, 506-Screw motor, 6-Back plate, 601-Back plate sleeve, 7-Steel cable winding roller, 701-Motor, 8-Steel cable, 9-Suspension hook, 901-Anti-detachment plate, 9011-Card slot, 902-Hinge shaft, 903-Elastic ring, 904-Pin rod, 905-Electromagnet, 10-Pulley, 1001-Pulley hanging rod. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0021] Example 1 like Figure 1 As shown, a special maintenance tool for elevator traction main unit includes: a base 1, with a top beam steel column 3 vertically installed on each of the two sides of the upper surface of the base 1. The lower end of the top beam steel column 3 is clamped onto the edge of the base 1 through a U-shaped slot. A bolt passes through the U-shaped slot, and the U-shaped slot is fixed to the edge of the base by bolts and nuts, thereby realizing the installation and fixation between the top beam steel column 3 and the base 1; a crossbeam steel 4 is horizontally installed at the upper end of the two top beam steel columns 3. Each of the two top beam steel columns 3 is equipped with a set of suspension traction components, and the two sets of suspension traction components are arranged symmetrically. For example, the above-mentioned suspension traction assembly can be set as an electric hoist, with one end of a steel cable wound around the electric hoist and the other end of the steel cable passing over a pulley set below the crossbeam and pointing vertically downwards; For example, such as Figure 1As shown, the suspension traction assembly of this embodiment includes: a back plate 6, with two winding roller mounting plates symmetrically arranged on the inner sides of the two back plates 6, and the outer side of the back plate 6 is set on the top beam steel column 3; a steel cable winding roller 7 is rotatably arranged between the two winding roller mounting plates, and a motor 701 is arranged at one end of the steel cable winding roller 7 and located outside the winding roller mounting plate, with the rotor of the motor 701 connected to one end of the steel cable winding roller 7; the motor 701 can drive the steel cable winding roller 7 to rotate; the first end of the steel cable 8 is coiled on the steel cable winding roller 7, and the second end of the steel cable 8 passes over the pulley 10 arranged below the crossbeam steel 4 and hangs vertically downward; like Figure 1 As shown, a suspension hook 9 is provided at the lower end of the steel cable 8. The suspension hook 9 is hooked onto the suspension point on the traction host, and can be suspended under the drive of the suspension traction component. Because of the large weight of the elevator traction machine, even a slight deviation in the horizontal state of the suspension frame when it is suspended in it may cause the center of gravity to shift during the lifting and suspension process, resulting in the suspension frame tipping over. Therefore, in this embodiment, a horizontal detection component is set in the center of the upper surface of the base 1 to detect the horizontal status of the suspension frame, especially the suspension base, before suspension. If there is any deviation, the horizontal correction can be performed immediately. For example, the level detection component described above can be configured as a level sensor; For example, in this embodiment, the level detection component is set as a tilt sensor, which is communicatively connected to the input of the processor; by capturing whether the base 1 has a tilt offset, it can be determined whether the base 1 is in a state of horizontal imbalance; if it is determined that the base 1 is horizontally imbalanced, it is corrected by a level adjustment component set on the bottom surface of the base 1, such as... Figure 1 As shown, four sets of horizontal adjustment components are set, corresponding to the four top corners below the base 1. Each set of horizontal adjustment components is responsible for raising or lowering the corresponding top corner. For example, the above-mentioned leveling component can be set as a hydraulic lifting column, which can realize the leveling of the base 1 by hydraulic control of lifting; however, even when the hydraulic lifting column is in a state without extension length, it has a certain height. This height of the hydraulic lifting column will raise the center of gravity of the base 1 and the whole above, which will have a certain impact on stability during suspension. For example, this embodiment uses a superior horizontal adjustment component structure instead of a hydraulic lifting column, such as... Figure 4As shown, the horizontal adjustment assembly includes: two sets of symmetrically arranged sliding seats 501; a fixed plate 502 is provided on the upper surface of the two sets of sliding seats 501 and near the left side of the sliding seats 501, the fixed plate 502 is immovable relative to the sliding seats 501; a sliding plate 503 is movably arranged on the upper surface of the two sets of sliding seats 501, and the sliding connection structure between the sliding seats 501 and the sliding plate 503 is configured as follows: a sliding plate embedding groove 5011 is opened on the upper surface of the sliding seat 501, and an embedding block is provided below the sliding plate 503. The embedding block is movably arranged in the sliding plate embedding groove 5011. With the cooperation of the embedding block and the sliding plate embedding groove 5011, the sliding plate 503 can slide horizontally relative to the sliding seat 501 but has no movement in the vertical direction. A set of movable cross frames 504 is provided for each of the two sets of sliding seats 501. The movable cross frame 504 is composed of two cross-shaped frame rods, which are hinged at the intersection. The lower ends of the two sets of movable cross frames 504 are respectively hinged to the first and second ends of the fixed plate 502 and the sliding plate 503, and the upper ends of the two sets of movable cross frames 504 are slidably disposed on the lower surface of the base 1. A rotating shaft sleeve 5051 is installed between two sets of sliding seats 501, with the rotating shaft sleeve 5051 centrally located and connected to the sliding seats 501 on both sides via connecting rods. A threaded sleeve 5052 is installed below the sliding plate 503. A lead screw 505 is installed between the two sets of sliding seats 501, with the first end of the lead screw 505 rotatably mounted inside the rotating shaft sleeve 5051 and the second end of the lead screw 505 passing through the threaded sleeve 5052, with the lead screw 505 and the threaded sleeve 5052 being threadedly engaged. A lead screw motor 506 is installed at the second end of the lead screw 505, and the second end of the lead screw 505 is connected to the rotor of the lead screw motor 506. The lead screw motor 506 drives the lead screw 505 to rotate forward or backward, allowing the threaded sleeve below the sliding plate 503 to move back and forth. The threaded sleeve 5052 drives the sliding plate 503 to move forward or backward, thereby driving the movable cross frame 504 to rise or fall. The lead screw motor 506 is communicatively connected to the output of the processor. like Figure 6 As shown, the sliding connection structure between the upper end of the movable cross frame 504 and the lower bottom surface of the base 1 is configured as follows: an inner groove is opened on the lower bottom surface of the base 1 near both sides of the base 1, and a slide rod 102 is set in each inner groove. A sliding sleeve 103 is slidably set on the slide rod 102. Four sets of sliding sleeves 103 are set on the slide rod 102 on each side, corresponding to the four upper ends of the two sets of movable cross frames 504 on the same side respectively. The upper end of each set of movable cross frames 504 is hinged to the two sets of sliding sleeves 103 respectively. The upper end of the movable cross frame 504 is slidably set with the lower bottom surface of the base 1. When the movable cross frame 504 is raised or lowered, the base 1 can be raised or lowered synchronously. Different horizontal adjustment components at the four corners of the base 1 cooperate to raise or lower, so as to realize the horizontal correction of the base 1. In a preferred embodiment, two sets of channel steels 2 are movably arranged on the upper surface of the base 1; the elevator traction machine is placed on the channel steels 2; the two sets of channel steels 2 support the elevator traction main unit, so that the elevator traction machine is in a raised and suspended state below, which facilitates the passage of steel cables and other suspension tools from below; The movable connection structure between the channel steel 2 and the base 1 is configured as follows: two symmetrical channel steel grooves 101 are opened on the upper surface of the base 1; embedded sliders are provided on the bottom surface of the channel steel 2 and near both ends of the channel steel 2, and the embedded sliders are slidably disposed in the channel steel grooves 101.
[0022] Example 2 Based on Embodiment 1, in Embodiment 1, the suspension hook 9 is hung on the suspension point on the traction host, which can lift and suspend the entire traction host; however, the suspension hook 9 is in an open state and may become detached. like Figure 2 As shown, in this embodiment, an anti-detachment plate 901 is provided on the suspension hook 9 to close the open part of the suspension hook 9 and prevent the hook from detaching during the suspension process; The anti-detachment plate 901 is hinged to the suspension hook 9 via the hinge shaft 902. The second end of the anti-detachment plate 901 has a slot 9011. An elastic ring 903 is provided between the anti-detachment plate 901 and the suspension hook 9. The elastic ring 903 pushes the anti-detachment plate 901 to the slot 9011 at its second end and overlaps it at the end near the suspension hook 9. like Figure 3 As shown in the preferred embodiment, to further enhance the anti-detachment protection of the anti-detachment plate 901, through-hole slots are formed near the second end of the anti-detachment plate 901, and on both the first and second sides of the anti-detachment plate 901. A pin 904 is detachably inserted into the through-hole slot. An electromagnet 905 is installed outside the through-hole slot on the second side of the anti-detachment plate 901, and a magnetic metal block is set at the end of the pin 904. When the pin 904 is fully inserted, the end of the pin 904 contacts the electromagnet 905, energizing the electromagnet 905. Under the magnetic attraction, the pin 904 is locked. After the pin 904 is locked, the anti-detachment plate 901 cannot leave the suspension hook 9, further enhancing the anti-detachment protection.
[0023] Example 3 Based on Embodiment 1, in Embodiment 1, the suspension traction assembly is used as a power source to lift and suspend the traction machine; the position of the suspension traction assembly on the top beam steel column 3 is fixed. like Figure 1As shown, in this embodiment, the position of the suspension traction assembly relative to the top beam steel column 3 is set as an adjustable mounting structure; a back plate sleeve 601 is provided on the outer side of the back plate 6, and the back plate sleeve 601 is movably mounted on the top beam steel column 3; threaded holes are opened on the outer side of the back plate sleeve 601, and several threaded holes are also opened at equal intervals on the outer side of the top beam steel column 3. Moving the back plate sleeve 601 on the top beam steel column 3 can synchronously adjust the position of the suspension traction assembly on the top beam steel column 3. Aligning the threaded holes on the back plate sleeve 601 with the threaded holes on the top beam steel column 3, inserting bolts, and tightening with nuts can fix the position of the back plate sleeve 601 and the suspension traction assembly.
[0024] Example 4 Based on Example 1, the position of the pulley 10 set below the crossbeam steel 4 in Example 1 is fixed, and the steel cables 8 on the left and right sides hang down through the pulley 10. The distance between the two sets of steel cables 8 is also fixed. However, the distance between the two suspension points is not always consistent. When the distance between the suspension point on the traction machine and the two sets of suspension hooks is inconsistent, the steel cable 8 will be suspended in an inclined state. like Figure 7 As shown, in this embodiment, a pulley mounting plate 401 is provided below the horizontal steel beam 4, and several bolt holes are opened at equal intervals on the pulley mounting plate 401. Pulley 10 is provided with pulley rods 1001 on both sides, and pulley 10 is rotatably positioned at the lower end near pulley rods 1001; bolt holes are also provided at the upper end of pulley rods 1001. The bolt holes on pulley rods 1001 are aligned with the bolt holes on pulley mounting plate 401, bolts are inserted into the bolt holes, and nuts are used to tighten pulley rods 1001 and pulley mounting plate 401; when it is necessary to adjust the distance between pulleys 10, simply move pulley rods 1001 to the corresponding threaded holes.
Claims
1. A special maintenance tool for elevator traction main unit, comprising: Base; Two steel columns are installed as the top beams, vertically and symmetrically arranged on both sides of the upper surface of the base; The crossbeam steel is horizontally installed at the upper end of the two top beam steel columns; Two sets of suspension traction components are provided, symmetrically arranged on the two top beam steel columns respectively; the suspension traction components serve as the suspension lifting drive source; A steel cable, the first end of which is coiled around the suspension traction assembly, and the second end of which passes over a pulley disposed below the crossbeam steel; A suspension hook is provided on the second end of the steel cable; Used to suspend the traction main unit; Its characteristic is that it further includes: A level detection component is centrally located on the upper surface of the base and is used to detect the levelness of the base; the level detection component is communicatively connected to the input terminal of the processor. At least four horizontal adjustment components are provided, each located at one of the four corners below the base. The horizontal adjustment components are communicatively connected to the output of the processor. The horizontal adjustment components are used to correct and adjust the overall horizontal state of the suspension frame.
2. The elevator hoisting machine special maintenance tool according to claim 1, characterized in that, The horizontal detection component is configured as a tilt sensor or a horizontal sensor; the tilt sensor or horizontal sensor is communicatively connected to the input terminal of the processor.
3. The elevator hoisting machine service tool of claim 1, wherein, The horizontal adjustment component includes: Two sets of sliding seats are symmetrically arranged. A fixing plate is fixedly installed on the upper surface of the two sets of sliding seats; A sliding plate is slidably disposed on the upper surface of the two sets of sliding seats; Two sets of movable cross frames are symmetrically arranged; the lower ends of the two sets of movable cross frames are respectively hinged to the first and second ends of the fixed plate and the sliding plate; the upper ends of the two sets of movable cross frames are slidably disposed on the lower surface of the base. A rotating bushing is disposed between the two sets of sliding seats; A threaded sleeve is disposed below the sliding plate; The lead screw has a first end rotatably mounted inside the rotating shaft sleeve, and a second end passing through the threaded sleeve. The lead screw and the threaded sleeve are connected by a thread. A lead screw motor, wherein the rotor of the lead screw motor is connected to the second end of the lead screw.
4. A special maintenance tool for elevator traction main unit according to claim 3, characterized in that, The upper surface of the sliding base is provided with a sliding plate embedding groove; an embedding block is provided below the sliding plate; The embedded block is movably disposed within the sliding plate embedding groove.
5. The elevator hoisting machine service tool of claim 3, wherein, The base has an inner groove on its bottom surface and near each of its two sides. Each of the two sets of inner grooves is provided with a sliding rod; A sliding sleeve is slidably mounted on the slide rod; The upper end of the movable cross frame is hinged to the lower part of the sliding sleeve.
6. The elevator hoisting machine service tool of claim 1, wherein, The suspension hook is hinged with an anti-detachment plate; The second end of the anti-detachment plate has a slot, and the slot at the second end of the anti-detachment plate overlaps with the end near the suspension hook. An elastic ring is provided between the anti-detachment plate and the inner side of the suspension hook.
7. The elevator hoisting machine service tool of claim 6, wherein, A through-hole groove is provided near the second end of the anti-detachment plate, and on both the first and second sides of the anti-detachment plate. The detachable insertion pin is located inside the circular through-slot. An electromagnet is installed on the outside of the circular through-hole groove on the second side of the anti-detachment plate; The end of the pin is configured as a magnetic metal block; The end of the pin is inserted and then contacts the electromagnet.
8. The elevator hoist machine service tool of claim 1, wherein, The suspension traction assembly includes: The back plate has two winding roller mounting plates symmetrically arranged on the inner side of each of the two back plates; the outer sides of the two back plates are respectively arranged on the two top beam steel columns. A steel cable winding roller is rotatably positioned between two sets of winding roller mounting plates; An electric motor, wherein the rotor of the electric motor is connected to one end of the cable winding roller.
9. The elevator hoist machine service tool of claim 8, wherein, A back plate sleeve is provided on the outer side of the back plate, and the back plate sleeve is movably mounted on the top beam steel column; Threaded holes are opened on the outer side of the back plate sleeve, and several threaded holes are also opened at equal intervals on the outer side of the top beam steel column. The back plate sleeve is fastened to the top beam steel column by bolts and nuts.
10. The elevator hoist machine service tool of claim 1, wherein, A pulley mounting plate is provided below the crossbeam steel, and a number of bolt holes are equally spaced on the pulley mounting plate; The pulley is provided with pulley rods on both sides, and the pulley is rotatably mounted at the lower end of the pulley rods; Bolt holes are also provided at the upper end of the pulley rod, and the pulley rod and the pulley mounting plate are fastened together by bolts and nuts.