Small-pitch step chain
By arranging balls and inner sleeve structures at both ends of the roller of the ladder chain, the problems of increased noise and high maintenance costs caused by roller wear are solved, and the effect of reducing wear and maintenance costs is achieved.
Patent Information
- Application Number
- CN202423082653.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-13
AI Technical Summary
The rollers of existing step chains are prone to wear due to friction after long-term use, resulting in increased noise and high maintenance costs.
A small-pitch step chain is designed, which adopts a rolling friction structure with balls set at both ends of the roller. The design of the inner sleeve and the limit plate avoids the wear of the inner ring of the roller. The maintenance cost can be reduced by simply replacing the inner sleeve.
It effectively reduces roller wear, decreases noise, lowers maintenance costs, and improves the service life and operational stability of the ladder chain.
Smart Images
Figure CN223457959U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of step chain, concretely is a small pitch step chain. BACKGROUND
[0002] The application field of step chain is very wide, and is used in the escalator of many large supermarkets and shopping malls, and the step chain can drive the escalator to move at a constant speed or to accelerate, which greatly facilitates the carrying demand of shopping malls and large supermarkets.
[0003] The existing step chain is usually provided with a roller on the rotating shaft of the connecting position of the outer chain plate and the inner chain plate in the use process, so that the roller moves in the guide rail of the escalator to ensure that the step chain runs according to the predetermined track, but the two sides of the roller are prone to wear due to friction after long-term use, and thus the noise of the escalator is increased. Therefore, a small pitch step chain is provided. UTILITY MODEL CONTENTS
[0004] The utility model discloses a small pitch step chain, which solves the problems in the background art.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a small pitch step chain, which comprises a step chain body, the step chain body is composed of an inner chain plate, an outer chain plate and a roller, a plurality of pairs of the inner chain plates and a plurality of pairs of the outer chain plates are staggered distributed, the two ends of the inner chain plate are respectively intersected with the adjacent outer chain plates, two rotating shafts are arranged between the two inner chain plates of the same pair, the two rotating shafts are distributed on the two sides of the inner chain plate, the two ends of the rotating shaft are respectively provided with a connecting mechanism acting on the inner chain plate and the outer chain plate, the rotating shaft is sleeved with the roller, the roller is rotatably connected with the rotating shaft, the two ends of the roller are respectively provided with a plurality of spherical grooves, the plurality of spherical grooves are arranged in a ring array, and the spherical grooves are provided with a plurality of balls.
[0006] As a further preferred embodiment of the present technical solution, the connecting mechanism is composed of a fixed column, a baffle and a screw rod, the two ends of the rotating shaft are fixedly connected with the fixed column, the other end of the fixed column is sequentially slid through the inner chain plate and the outer chain plate, the end of the fixed column is provided with a connecting hole, the screw rod is connected with the connecting hole through thread cooperation, and the protruding end of the screw rod is fixedly connected with the baffle.
[0007] As a further preferred embodiment of the present technical solution, the sum of the thicknesses of the inner chain plate and the outer chain plate is equal to the length of the fixed column.
[0008] As a further preferred embodiment of the present technical solution, two baffle rings are sleeved on the rotating shaft, and the two baffle rings are symmetrically distributed on the two sides of the roller.
[0009] As a further preferred embodiment of the present application, the inner sleeve is fixedly connected to the outer wall of the inner sleeve, and the inner wall of the roller is provided with a plurality of limiting grooves corresponding to the limiting plates.
[0010] As a further preferred embodiment of the present application, the outer wall of the inner sleeve is fixedly connected to the outer wall of the inner sleeve, and the inner wall of the roller is provided with a plurality of limiting grooves corresponding to the limiting plates.
[0011] As a further preferred embodiment of the present application, the plurality of limiting plates are arranged in a ring array.
[0012] The present application provides a small-pitch step chain, which has the following advantages:
[0013] The present application provides a small-pitch step chain, which has the following advantages: BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 The present application provides a small-pitch step chain, which has the following advantages:
[0015] Fig. 2 The present application provides a small-pitch step chain, which has the following advantages:
[0016] Fig. 3 The present application provides a small-pitch step chain, which has the following advantages:
[0017] Fig. 4 The present application provides a small-pitch step chain, which has the following advantages:
[0018] In the figure: 1, step chain body; 2, inner chain plate; 3, outer chain plate; 4, roller; 5, rotating shaft; 6, retaining ring; 7, fixed column; 8, connecting hole; 9, ball; 10, spherical groove; 11, inner sleeve; 12, limiting plate; 13, limiting groove; 14, baffle; 15, screw. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings.
[0020] The present application provides a technical solution: as Figs. 1 to 4As shown, in this embodiment, a small-pitch ladder chain includes a ladder chain body 1, which is composed of an inner chain plate 2, an outer chain plate 3 and a roller 4. Multiple pairs of inner chain plates 2 and multiple pairs of outer chain plates 3 are staggered. The two ends of the inner chain plates 2 intersect with their adjacent outer chain plates 3 respectively. Two rotating shafts 5 are arranged between the two inner chain plates 2 of the same pair. The two rotating shafts 5 are distributed on both sides of the inner chain plates 2. The two ends of the rotating shaft 5 are respectively provided with connecting mechanisms acting on the inner chain plates 2 and the outer chain plates 3. Rollers 4 are sleeved on the rotating shaft 5, and the rollers 4 are rotatably connected to the rotating shaft 5. Multiple spherical grooves 10 are respectively opened at both ends of the roller 4. The multiple spherical grooves 10 are in a ring array, and balls 9 are arranged in the spherical grooves 10.
[0021] Among them, the connecting mechanism consists of a fixed column 7, a baffle 14 and a screw 15. The two ends of the rotating shaft 5 are fixedly connected to the fixed column 7, and the other end of the fixed column 7 slides through the inner link plate 2 and the outer link plate 3 in sequence. The sum of the thickness of the inner link plate 2 and the outer link plate 3 is equal to the length of the fixed column 7. A connecting hole 8 is opened at the end of the fixed column 7. The screw 15 is connected to the connecting hole 8 through threaded cooperation, and the protruding end of the screw 15 is fixedly connected to the baffle 14.
[0022] During installation, the roller 4 can be sleeved on the rotating shaft 5, the inner link plate 2 and the outer link plate 3 can be sleeved on the fixing column 7, and then the screw 15 can be rotated and installed into the connecting hole 8, so that the baffle 14 blocks the outer wall of the outer link plate 3, thereby completing the assembly of the ladder chain.
[0023] Two retaining rings 6 are sleeved on the rotating shaft 5 , and the two retaining rings 6 are symmetrically distributed on both sides of the roller 4 .
[0024] Among them, an inner sleeve 11 is provided on the inner ring side wall of the roller 4, the outer diameter of the inner sleeve 11 is equal to the inner diameter of the roller 4, and a plurality of limit plates 12 are fixedly connected to the outer wall of the inner sleeve 11. A plurality of limit grooves 13 corresponding to the limit plates 12 are opened on the inner wall of the roller 4, and the limit grooves 13 and the limit plates 12 are slidably fitted, and the plurality of limit plates 12 are in a ring array.
[0025] The inner sleeve 11 is provided to prevent wear between the inner wall of the roller 4 and the rotating shaft 5. The limit plate 12 and the limit groove 13 are provided to prevent relative rotation between the inner sleeve 11 and the roller 4. After the roller 4 is used for a long time, the inner wall of the roller 4 will not be worn. When repairing and replacing the roller 4, only the inner sleeve 11 needs to be replaced, which can effectively reduce the maintenance cost of the ladder chain body 1.
[0026] The utility model provides a small pitch ladder chain, the specific working principle is as follows:
[0027] In the installation, the roller 4 and the two check rings 6 are sleeved on the rotating shaft 5, the two check rings 6 are arranged on the two sides of the roller 4, then the inner chain plate 2 and the outer chain plate 3 are sleeved on the fixed column 7, and then the screw rod 15 is rotatably installed into the connecting hole 8, so that the baffle 14 blocks the outer wall of the outer chain plate 3, and the assembly of the ladder chain is completed, and the ball 9 arranged at the two ends of the roller 4 can convert the sliding friction between the roller 4 and the check ring 6 into rolling friction, so that the wear of the roller 4 is effectively reduced, and then the noise of the ladder chain body 1 caused by the wear of the roller 4 is avoided, meanwhile, the inner sleeve 11 is designed, so that the whole roller 4 does not need to be replaced when the inner wall of the traditional roller 4 is worn, and only the inner sleeve 11 needs to be replaced, and the maintenance cost can be effectively reduced.
[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A close-pitch step chain comprising a step chain body (1), characterized in that: The ladder chain body (1) is composed of inner chain plates (2), outer chain plates (3) and rollers (4), a plurality of pairs of inner chain plates (2) and a plurality of pairs of outer chain plates (3) are staggered, the two ends of the inner chain plate (2) are respectively intersected with the adjacent outer chain plate (3), two shafts (5) are arranged between the two inner chain plates (2) of the same pair, the two shafts (5) are distributed on the two sides of the inner chain plate (2), the two ends of the shaft (5) are respectively provided with a connecting mechanism acting on the inner chain plate (2) and the outer chain plate (3), the shaft (5) is sleeved with the roller (4), the roller (4) is rotatably connected with the shaft (5), a plurality of spherical grooves (10) are respectively formed in the two ends of the roller (4), a plurality of spherical grooves (10) are arranged in a ring array, and a plurality of balls (9) are arranged in the spherical grooves (10).
2. A close pitch ladder chain according to claim 1, characterized in that: The connecting mechanism is composed of a fixed column (7), a baffle (14) and a screw rod (15), the two ends of the shaft (5) are respectively fixedly connected with the fixed column (7), the other end of the fixed column (7) is sequentially slid through the inner chain plate (2) and the outer chain plate (3), the end of the fixed column (7) is provided with a connecting hole (8), the screw rod (15) is connected with the connecting hole (8) through thread cooperation, and the protruding end of the screw rod (15) is fixedly connected with the baffle (14).
3. A close pitch ladder chain according to claim 2, characterized in that: The sum of the thicknesses of the inner chain plate (2) and the outer chain plate (3) is equal to the length of the fixed column (7).
4. A close pitch ladder chain according to claim 1, characterized in that: The shaft (5) is sleeved with two retaining rings (6), and the two retaining rings (6) are symmetrically distributed on the two sides of the roller (4).
5. A close pitch ladder chain according to claim 1, characterized in that: An inner sleeve (11) is arranged on the inner wall of the roller (4), and the outer diameter of the inner sleeve (11) is equal to the inner diameter of the roller (4).
6. A close pitch ladder chain according to claim 5, characterized in that: A plurality of limiting plates (12) are fixedly connected to the outer wall of the inner sleeve (11), a plurality of limiting grooves (13) corresponding to the limiting plates (12) are formed in the inner wall of the roller (4), and the limiting grooves (13) and the limiting plates (12) are slidably fitted.
7. A close pitch ladder chain according to claim 6, characterized in that: A plurality of limiting plates (12) are arranged in a ring array.