Elevator steel cable traction sheave of nitrox process

Abstract

The utility model discloses an elevator steel cable traction shaft of nitrogen oxide chemical industry process relates to elevator manufacturing technical field, including traction sheave main part, the inside of traction sheave main part is provided with traction shaft main part, and the traction shaft main part is detachably installed in the traction sheave main part through the mounting piece, and the mounting piece includes the limiting board, and is fixedly arranged at one end of the outside of traction shaft main part, and the first arc clamping plate of a pair of symmetry is arranged, and is sleeved in the outside of traction shaft main part, and is clamped in the one side of the traction sheave main part close to the limiting board, and the one side of traction sheave main part away from the first arc clamping plate is provided with the fixing piece, and the fixing piece is sleeved in the outside of traction shaft main part. The utility model discloses through setting mounting piece, makes traction shaft main part convenient to install or dismount, through setting first arc clamping plate, has increased the contact area of transmission torque, through setting fixing piece, under the cooperation of fixing piece and mounting piece, makes traction shaft main part can be fixed in the traction sheave main part.

Description

Technical Field

[0001] This utility model relates to the field of elevator manufacturing technology, and in particular to an elevator steel cable traction shaft using a nitrogen oxidation process. Background Technology

[0002] The traction shaft is a crucial safety component in elevator traction systems. Its operating environment involves high-speed rotation and high loads, requiring high wear resistance, high fatigue strength, and high friction resistance. During manufacturing, traction shafts are typically made from 45 steel, undergoing pre-heat treatment followed by electroplating. However, its low hardenability means that pre-heat treatment alone can lead to significant deformation, uneven hardness, and large strength differences. Uneven deformation and strength can cause cracks at stress concentration points, potentially leading to shaft breakage and elevator car descent. If the traction shaft is subjected to collisions or impacts, the electroplated layer on its outer surface can be damaged or peeled off, especially when the plating is thin. Furthermore, during high-speed rotation and high-load operation, the traction shaft continuously transmits torque and interacts with other components; long-term friction gradually wears down the plating, affecting its performance and even the elevator's usability.

[0003] When installing the traction shaft onto the traction sheave, a keyway is usually made on the contact surface between the traction shaft and the traction sheave, and then a flat key is embedded in the keyway. This allows the flat key to assist the traction shaft and the traction sheave in rotating coaxially and synchronously, reducing yaw and vibration during rotation. However, the flat key only transmits torque through the contact surface with the traction shaft and the traction sheave, and the contact area is relatively small. In ultra-high speed and ultra-high load scenarios, problems such as side extrusion deformation and slippage of the flat key may occur, affecting the use of the elevator. Utility Model Content

[0004] The purpose of this invention is to provide an elevator cable traction shaft using a nitrogen oxidation process to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an elevator steel cable traction shaft using a nitrogen oxidation process, comprising a traction sheave body, wherein a traction shaft body is disposed inside the traction sheave body, and the traction shaft body is detachably installed inside the traction sheave body via a mounting component, the mounting component comprising:

[0006] A limiting plate is fixedly installed at one end of the outer side of the traction shaft body;

[0007] A pair of symmetrically arranged first arc-shaped clamping plates are fitted onto the outside of the traction shaft body and engaged with the side of the traction wheel body near the limiting plate;

[0008] A fixing member is provided on the side of the traction wheel body away from the first arc-shaped clamping plate, and the fixing member is sleeved on the outside of the traction shaft body.

[0009] Preferably, the diameter of the traction shaft body is smaller than the inner diameter of the traction wheel body, the limiting plate contacts the side adjacent to the traction wheel body, and the diameter of the limiting plate is larger than the inner diameter of the traction wheel body.

[0010] Preferably, a first slot is provided on the side of the traction wheel body near the limiting plate, the first arc-shaped card is slidably inserted into the first slot, a plurality of first protrusions arranged in a ring array are fixed on the outer side of the first arc-shaped card, and a plurality of grooves are provided on the inner wall of the first slot, which are equal in number and size to the first protrusions, and each first protrusion is disposed in the corresponding groove.

[0011] Preferably, the mounting component further includes a mounting plate, which is threaded onto the inner side of the end of the first arc-shaped clamping plate away from the limiting plate, and a rotating plate is fixedly provided at the end of the mounting plate away from the first arc-shaped clamping plate.

[0012] Preferably, the inner diameter of the rotating plate is equal to the inner diameter of the mounting plate, and a threaded groove is provided on the outer side wall of the traction shaft body away from the limiting plate. The inner walls of the rotating plate and the mounting plate are threadedly sleeved on the outer side of the traction shaft body, and the outer side wall of the mounting plate is threadedly installed on the inner wall of the traction wheel body on the side away from the limiting plate.

[0013] Preferably, the fixing member includes a pair of symmetrically arranged second arc-shaped clamping plates. An arc-shaped plate is fixedly provided on the inner side of the pair of second arc-shaped clamping plates at the end away from the rotating plate. A second slot is opened on the outer side of the traction shaft body. The arc-shaped plate is engaged in the second slot, and the second arc-shaped clamping plate abuts against the adjacent rotating plate.

[0014] Preferably, the inner side of the second arc-shaped clamping plate is attached to the outer side of the traction shaft body, and a plurality of second protrusions arranged in a circular pattern are fixedly provided on the outer side of each pair of second arc-shaped clamping plates.

[0015] Preferably, the fastener further includes a pair of bolts, which are respectively disposed at the contact ends of a pair of second arc-shaped plates. The bolt threads penetrate the contact ends of the two second arc-shaped plates, and a nut is threaded onto the threaded section of the bolt.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. In this utility model, by setting the mounting parts, the traction shaft body is easy to install or disassemble. By setting the first arc-shaped clamping plate, the contact area for transmitting torque is increased, so that the first arc-shaped clamping plate is not prone to squeezing deformation or slippage under ultra-high speed and ultra-large load scenarios, thereby avoiding damage to the traction wheel body and the traction shaft body.

[0018] 2. In this utility model, by setting a fixing component, the traction shaft body can be fixed inside the traction wheel body through the cooperation of the fixing component and the mounting component. The fixing component is fixed to the traction shaft body by bolts and nuts. The position of the second arc plate is fixed by the first slot, so that the traction shaft body can be tightly installed inside the traction wheel body during use and will not detach from the inside of the traction wheel body, which is convenient for use. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the limiting plate structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the first slot structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the mounting component structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the main structure of the traction shaft of this utility model;

[0025] Figure 6 This is a schematic diagram of the fastener structure of this utility model;

[0026] In the diagram, the following components are listed: 1. Traction wheel body; 2. Traction shaft body; 3. Mounting component; 301. First arc-shaped clamping plate; 302. First slot; 303. Mounting plate; 304. Rotating plate; 305. First protrusion; 4. Fixing component; 401. Second arc-shaped clamping plate; 402. Second protrusion; 403. Bolt; 404. Nut; 5. Limiting plate; 6. Second slot. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example: This example provides an elevator cable traction shaft using a nitrogen oxidation process. See [link to example]. Figure 1-6 The system includes a traction sheave body 1, inside which a traction shaft body 2 is housed. Both the traction sheave body 1 and the traction shaft body 2 are made of alloy structural steel, specifically 40Cr steel. This material, after quenching and high-temperature tempering heat treatment, possesses good strength and toughness. Following heat treatment, the traction sheave body 1 and the traction shaft body 2 undergo shot blasting to achieve a certain roughness and improve friction. Then, a gas nitrogen oxidation composite process is used, where ammonia gas is introduced at approximately 600℃ to nitrid the traction sheave body 1 and the traction shaft body 2, followed by the introduction of water vapor. The traction shaft body 2 is subjected to oxidation treatment to achieve a deeper compound layer, which improves the uniformity of the heat treatment process, reduces the deformation of the traction shaft body 2 during the heat treatment process, and gives it excellent corrosion resistance, keeping the workpiece free from corrosion for a long time. By adopting a composite heat treatment process of alloy structural steel preheating and nitrogen oxidation, the traction shaft body 2 is strengthened, which effectively solves the instability of the original process of 45 steel preheating, such as large deformation, uneven hardness, and large strength difference, as well as the abnormalities such as easy peeling of electroplating layer and poor wear resistance, thus improving the service efficiency and service life of the workpiece.

[0029] The traction shaft body 2 is detachably installed inside the traction wheel body 1 via the mounting component 3. The mounting component 3 includes a limiting plate 5, which is fixedly installed at one end of the outer side of the traction shaft body 2, and a pair of symmetrically arranged first arc-shaped clamping plates 301. The first arc-shaped clamping plates 301 are semi-circular in shape, sleeved on the outer side of the traction shaft body 2, and engaged on the side of the traction wheel body 1 near the limiting plate 5. A fixing component 4 is provided on the side of the traction wheel body 1 away from the first arc-shaped clamping plates 301. The fixing component 4 is sleeved on the outer side of the traction shaft body 2. The diameter of the traction shaft body 2 is smaller than the inner diameter of the traction wheel body 1. The limiting plate 5 contacts the side adjacent to the traction wheel body 1. The diameter of the limiting plate 5 is larger than the inner diameter of the traction wheel body 1. The limiting plate 5 is used to limit the position of one end of the traction shaft body 2.

[0030] A first slot 302 is provided on the side of the traction wheel body 1 near the limiting plate 5. A first arc-shaped card plate 301 is slidably inserted into the first slot 302. A plurality of first protrusions 305 arranged in a ring array are fixed on the outer side of the first arc-shaped card plate 301. A plurality of protrusions 305 of the same number and size as the first protrusions 305 are provided on the inner wall of the first slot 302. Each first protrusion 305 is set in the corresponding protrusion. In use, the inner sides of the two first arc-shaped card plates 301 are attached to the outer side of the traction shaft body 2, and then the two first arc-shaped card plates 301 are snapped into the first slot 302. The mounting part 3 also includes a mounting plate 303. The mounting plate 303 is threadedly installed on the inner side of the end of the first arc-shaped card plate 301 away from the limiting plate 5. A rotating plate 304 is fixed on the end of the mounting plate 303 away from the first arc-shaped card plate 301. Driving the rotating plate 304 to rotate can drive the mounting plate 303 to rotate synchronously, making it easy to screw the mounting plate 303 in or out.

[0031] The inner diameter of the rotating plate 304 is equal to the inner diameter of the mounting plate 303. A threaded groove is provided on the outer wall of the traction shaft body 2 away from the limiting plate 5. The inner walls of the rotating plate 304 and the mounting plate 303 are threaded onto the outer side of the traction shaft body 2. The outer wall of the mounting plate 303 is threaded onto the inner wall of the traction wheel body 1 on the side away from the limiting plate 5. Since the mounting plate 303 is threaded onto the side of the two first arc-shaped clamping plates 301 away from the limiting plate 5, the position of the mounting plate 303 can be fixed. At this time, the rotating plate 304 is in contact with the side adjacent to the traction wheel body 1, so that the rotating plate 304 can restrict the position of the end of the traction shaft body 2 away from the limiting plate 5, so that the traction shaft body 2 is fixed in the traction wheel body 1 under the restriction of the rotating plate 304 and the limiting plate 5.

[0032] The elevator steel cable traction shaft of this utility model, through the setting of the mounting part 3, facilitates the installation or disassembly of the traction shaft body 2. By setting the first arc-shaped clamping plate 301, the contact area for transmitting torque is increased, so that the first arc-shaped clamping plate 301 is not prone to compression deformation or slippage under ultra-high speed and ultra-large load scenarios, thereby avoiding damage to the traction wheel body 1 and the traction shaft body 2.

[0033] In the specific implementation process, such as Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, the fixing member 4 includes a pair of symmetrically arranged second arc-shaped clamping plates 401. The inner side of the end of the pair of second arc-shaped clamping plates 401 away from the rotating plate 304 is fixed with an arc-shaped plate. The arc-shaped plate is semi-circular. The outer side of the traction shaft body 2 is provided with a second groove 6. The second groove 6 is annular. The arc-shaped plate is engaged in the second groove 6. By engaging the arc-shaped plate with the second groove 6, the position of the second arc-shaped clamping plate 401 can be fixed. The second arc-shaped clamping plate 401 abuts against the adjacent rotating plate 304. When the second arc-shaped clamping plate 401 abuts against the adjacent rotating plate 304, the arc-shaped plate fixed on the inner side of the second arc-shaped clamping plate 401 is exactly aligned with the second groove 6, so that the arc-shaped plate can be engaged in the second groove 6.

[0034] The inner side of the second arc-shaped clamping plate 401 is attached to the outer side of the traction shaft body 2. Multiple second protrusions 402 arranged in a circle are fixed on the outer side of each pair of second arc-shaped clamping plates 401. The fixing member 4 also includes a pair of bolts 403. The pair of bolts 403 are respectively set at the contact end of the pair of second arc-shaped clamping plates 401. The threads of the bolts 403 penetrate through the contact end of the two second arc-shaped clamping plates 401. Nuts 404 are threadedly installed on the threaded section of the bolts 403. Since the upper and lower ends of the two second arc-shaped clamping plates 401 are provided with threaded holes, the two bolts 403 can be threadedly installed in the corresponding threaded holes. Nuts 404 are threadedly installed on the threaded section of the bolts 403. Through the mutual cooperation of the bolts 403 and nuts 404, the two second arc-shaped clamping plates 401 can be fixed together, so that the mounting member 3 can be more stably fixed in the traction wheel body 1 under the obstruction of the fixing member 4.

[0035] The elevator steel cable traction shaft of this utility model, through the setting of a fixing member 4, and the cooperation of the fixing member 4 and the mounting member 3, achieves the function of fixing the traction shaft body 2 inside the traction wheel body 1. The fixing member 4 is fixed to the traction shaft body 2 by bolts 403 and nuts 404. The position of the second arc-shaped clamping plate 401 is fixed by the first clamping groove 302, so that the traction shaft body 2 can be tightly installed inside the traction wheel body 1 during use and will not detach from the traction wheel body 1, which is convenient for use.

[0036] Specifically, the working principle and operation method of this utility model are as follows:

[0037] In specific operations, the procedures are as follows;

[0038] During installation, the inner sides of the two first arc-shaped clamping plates 301 are attached to the outer side of the traction shaft body 2, and the two first arc-shaped clamping plates 301 are inserted into the first clamping slot 302. The rotating plate 304 is turned so that the mounting plate 303 rotates synchronously with the rotating plate 304. Since the inner wall of the traction wheel body 1 away from the limiting plate 5 has a threaded groove, the rotating plate 304 can be threadedly installed inside the limiting plate 5. Since the first arc-shaped clamping plate 301 has a threaded groove on the side close to the mounting plate 303, the mounting plate 303 can be installed in the threaded groove on the first arc-shaped clamping plate 301. At this time, the rotating plate 304 is in contact with the adjacent side of the traction wheel body 1.

[0039] The inner sides of the two second arc-shaped clamping plates 401 are attached to the outer side of the traction shaft body 2, so that both second arc-shaped clamping plates 401 abut against the adjacent rotating plate 304. Since the rotating plate 304 abuts against the adjacent side of the traction wheel body 1, the arc-shaped plate fixedly installed on the inner side of the second arc-shaped clamping plate 401 is aligned with the second clamping groove 6, so that the arc-shaped plate can be clamped in the second clamping groove 6. Since both the upper and lower ends of the two second arc-shaped clamping plates 401 are provided with threaded holes, two bolts 403 are threaded into the corresponding threaded holes, and nuts 404 are threaded into the threaded section of bolts 403. The two second arc-shaped clamping plates 401 are fixed together by bolts 403 and nuts 404.

[0040] During disassembly, remove bolts 403 and nuts 404, remove the second arc-shaped clamping plate 401, and rotate the rotating plate 304 to move it to the outside of the traction wheel body 1. This causes the mounting plate 303 to move outward synchronously with the rotating plate 304, allowing the mounting plate 303 to detach from the first arc-shaped clamping plate 301. The mounting plate 303 and rotating plate 304 can then be removed from the traction shaft body 2. The traction shaft body 2 can then be removed from the side of the traction wheel body 1 closest to the limiting plate 5, allowing the first arc-shaped clamping plate 301 to be removed from the traction wheel body 1. The workers can then inspect or replace the various parts.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this solution, "multiple" means two or more, unless otherwise explicitly specified.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An elevator cable traction shaft using a nitrogen oxidation process, comprising a traction sheave body (1), wherein a traction shaft body (2) is disposed inside the traction sheave body (1), characterized in that, The traction shaft body (2) is detachably mounted inside the traction wheel body (1) via a mounting component (3), the mounting component (3) comprising: The limiting plate (5) is fixedly installed at one end of the outer side of the traction shaft body (2); A pair of symmetrically arranged first arc-shaped clamping plates (301) are sleeved on the outside of the traction shaft body (2) and engaged on the side of the traction wheel body (1) near the limiting plate (5); A fixing member (4) is provided on the side of the traction wheel body (1) away from the first arc-shaped clamping plate (301), and the fixing member (4) is sleeved on the outside of the traction shaft body (2).

2. The elevator steel cable traction shaft according to claim 1 using a nitrogen oxidation process, characterized in that: The diameter of the traction shaft body (2) is smaller than the inner diameter of the traction wheel body (1), the limiting plate (5) is in contact with the side adjacent to the traction wheel body (1), and the diameter of the limiting plate (5) is larger than the inner diameter of the traction wheel body (1).

3. The elevator steel cable traction shaft according to claim 1 using a nitrogen oxidation process, characterized in that: The traction wheel body (1) has a first slot (302) on the side near the limiting plate (5). The first arc-shaped plate (301) is slidably inserted into the first slot (302). Multiple first protrusions (305) arranged in a ring array are fixed on the outer side of the first arc-shaped plate (301). Multiple grooves with the same number and size as the first protrusions (305) are opened on the inner wall of the first slot (302). Each first protrusion (305) is set in the corresponding groove.

4. The elevator cable traction shaft according to claim 3 using a nitrogen oxidation process, characterized in that: The mounting component (3) further includes a mounting plate (303), which is threaded onto the inner side of the end of the first arc-shaped clamping plate (301) away from the limiting plate (5), and a rotating plate (304) is fixedly provided at the end of the mounting plate (303) away from the first arc-shaped clamping plate (301).

5. The elevator cable traction shaft according to claim 4 using a nitrogen oxidation process, characterized in that: The inner diameter of the rotating plate (304) is equal to the inner diameter of the mounting plate (303). The outer side wall of the traction shaft body (2) away from the limiting plate (5) is provided with a threaded groove. The inner walls of the rotating plate (304) and the mounting plate (303) are threadedly sleeved on the outer side of the traction shaft body (2). The outer side wall of the mounting plate (303) is threadedly installed on the inner wall of the traction wheel body (1) away from the limiting plate (5).

6. The elevator cable traction shaft according to claim 1 using a nitrogen oxidation process, characterized in that: The fixing member (4) includes a pair of symmetrically arranged second arc-shaped clamping plates (401). The inner side of the pair of second arc-shaped clamping plates (401) away from the rotating plate (304) is fixed with an arc-shaped plate. The outer side of the traction shaft body (2) is provided with a second slot (6). The arc-shaped plate is engaged in the second slot (6), and the second arc-shaped clamping plate (401) abuts against the adjacent rotating plate (304).

7. The elevator cable traction shaft according to claim 6 using a nitrogen oxidation process, characterized in that: The inner side of the second arc-shaped clamp (401) is attached to the outer side of the traction shaft body (2), and a plurality of second protrusions (402) arranged in a circle are fixed on the outer side of each pair of second arc-shaped clamps (401).

8. The elevator cable traction shaft according to claim 7 using a nitrogen oxidation process, characterized in that: The fastener (4) further includes a pair of bolts (403), which are respectively disposed at the contact ends of a pair of second arc-shaped plates (401). The bolts (403) are threaded through the contact ends of the two second arc-shaped plates (401), and nuts (404) are threadedly installed on the threaded section of the bolts (403).

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