Long chain conveyor

By designing an automated long chain stretching machine, which utilizes a base, fixed clamps, moving clamps, hydraulic cylinder components, and chain-delaying mechanism, the automatic transmission and stretching of the chain is achieved. This solves the problems of slow speed and inconvenient operation of existing stretching machines, improves production efficiency, and reduces labor costs.

CN224372714UActive Publication Date: 2026-06-19CHANGCHUN NORTHEAST TRANSPORTATION CHAIN MAKING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGCHUN NORTHEAST TRANSPORTATION CHAIN MAKING CO LTD
Filing Date
2025-06-12
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing chain stretching machines are slow and inconvenient to operate.

Method used

Design a long chain stretching machine, including a base, fixed clamp, moving clamp, hydraulic cylinder assembly, clamping cylinder and chain derailleur mechanism, to realize the automatic transmission, clamping and stretching of the chain. The chain derailleur mechanism is driven by a motor to complete the automatic transmission and stretching of the chain.

Benefits of technology

It improves the efficiency of chain stretching, simplifies the operation process, reduces labor costs, and solves the problems of slow speed and inconvenient operation of existing stretching machines.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model provides a long chain stretching machine, including a base. The base is equipped with a fixed clamp, a movable clamp, and a hydraulic cylinder assembly. The movable clamp is located between the fixed clamp and the hydraulic cylinder assembly. The hydraulic cylinder assembly is connected to a slide shaft, which passes through the movable and fixed clamps. The hydraulic cylinder assembly, movable clamp, and fixed clamp are connected by the slide shaft to form a movable unit. The movable clamp can move along the slide shaft between the fixed clamp and the hydraulic cylinder assembly. Clamping cylinders are respectively provided on the left and right sides of both the fixed and movable clamps. A chain-delaying mechanism is provided in front of the fixed clamp. This utility model relates to the field of chain stretching. When the chain-delaying mechanism delays the chain, the clamping mechanism clamps the chain, and the hydraulic cylinder assembly slides on one side, stretching the chain. After reaching the required size, the hydraulic cylinder assembly retracts, the clamping mechanism opens, and the chain-delaying mechanism delays the chain, completing one revolution. This utility model has a simple structure, high rigidity, and can improve efficiency, reduce costs, and reduce labor.
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Description

Technical Field

[0001] This utility model relates to the field of chain stretching, and in particular to a long chain stretching machine. Background Technology

[0002] In the chain production process, the welded chain undergoes primary and secondary stretching. The current method involves placing the chain on one side of a stretching machine, manually transferring the chain for stretching, and then manually removing it. This method is slow and inconvenient for operators. Utility Model Content

[0003] In view of this, the present invention aims to propose a long chain stretching machine to solve the problems of slow speed and inconvenient operation of existing stretching machines.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A long chain stretching machine includes a base, on which a fixed clamp and a hydraulic cylinder assembly are provided;

[0006] The hydraulic cylinder assembly is fixedly connected to a movable clamp and a slide shaft, with the movable clamp located between the fixed clamp and the hydraulic cylinder assembly;

[0007] The slide shaft passes through the movable clamp and the fixed clamp and is fixedly connected to the fixed clamp;

[0008] Clamping cylinders are provided on both the left and right sides of the fixed clamp and the movable clamp;

[0009] The fixed clamp is equipped with a chain mechanism in front of it.

[0010] Furthermore, the base is fixedly connected to the fixed clamp, the fixed clamp is provided with a fixed clamp slide, and the movable clamp is provided with a movable clamp slide. The fixed clamp slide and the movable clamp slide are used for the forward movement and stretching of the long chain.

[0011] Furthermore, the cylinder assembly includes a piston rod, a connecting flange, and a cylinder slide. The piston rod can move left and right within the cylinder assembly. The piston rod is threadedly connected to the connecting flange. The piston rod is screwed to the cylinder slide, and the cylinder slide guides and supports the piston rod. The connecting flange is screwed to the movable clamp.

[0012] Furthermore, the derailleur mechanism is connected to a reducer via a shaft, and the reducer is screwed to a motor base plate. The motor base plate is mounted on the fixed clamp via screws. Driven by the motor, the derailleur mechanism moves the chain.

[0013] Furthermore, the clamping cylinder is threadedly connected to a clamping mold adjusting block, and the clamping mold adjusting block is screwed to a clamping mold.

[0014] Furthermore, the left and right ends of the slide shaft are respectively threaded with a spoke-type sensor and a slide shaft locking cap. The spoke-type sensor is connected to the fixed clamp screw, and the slide shaft locking cap is connected to the cylinder assembly screw, which can prevent the slide shaft from moving axially.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] The long chain stretching machine of this utility model is equipped with three mechanisms: a clamping cylinder, a hydraulic cylinder assembly, and a chain-delaying mechanism. This facilitates the automatic transmission, clamping, and stretching of the chain, simplifying the operation process, improving work efficiency, and reducing labor costs. After the chain is transmitted via the chain-delaying mechanism, the clamping cylinder clamps the chain, and then the stretching cylinder performs the stretching. Operation is simple, efficiency is improved, and labor is reduced. It solves the problems of slow speed and inconvenient operation of existing stretching machines. Attached Figure Description

[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the long chain stretching machine described in this embodiment of the utility model;

[0019] Figure 2 As described in the embodiments of this utility model Figure 1 Cross-sectional view;

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Base; 2. Fixed clamp; 201. Fixed clamp slide rail; 3. Moving clamp; 301. Moving clamp slide rail; 4. Hydraulic cylinder assembly; 401. Piston rod; 402. Connecting flange; 403. Hydraulic cylinder slide rail; 5. Derailleur mechanism; 501. Reducer; 502. Motor base plate; 6. Clamping cylinder; 601. Clamping mold; 602. Clamping mold adjusting block; 7. Slide rail shaft; 701. Wheel spoke type sensor; 702. Slide rail shaft lock cap. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] This embodiment relates to a long chain stretching machine, which can realize automatic stretching and transmission of chains, improve production efficiency, and reduce labor costs.

[0026] Based on the above design concept, an exemplary structure of the long chain stretching machine in this embodiment is as follows: Figure 1 and Figure 2 As shown, it mainly includes a base 1. Specifically, the base 1 is welded from sheet metal. The base 1 is provided with a fixed clamp 2 and a hydraulic cylinder assembly 4. The hydraulic cylinder assembly 4 is fixedly connected to a movable clamp 3 and a slide shaft 7. The movable clamp 3 is located between the fixed clamp 2 and the hydraulic cylinder assembly 4. The slide shaft 7 passes through the movable clamp 3 and the fixed clamp 2 and is fixedly connected to the fixed clamp 2. Clamping cylinders 6 are provided on the left and right sides of the fixed clamp 2 and the movable clamp 3 respectively. A chain mechanism 5 is provided in front of the fixed clamp 2.

[0027] The base 1 is fixedly connected to the fixed clamp 2. The fixed clamp 2 is provided with a fixed clamp slide 201, and the movable clamp 3 is provided with a movable clamp slide 301. The fixed clamp slide 201 and the movable clamp slide 301 are used for the forward movement and stretching of the long chain. By providing the fixed clamp slide 201 and the movable clamp slide 301, stable guidance and support are provided for the chain during the stretching process, ensuring that the chain can run smoothly during forward movement and stretching, avoiding chain deviation or jamming during the stretching process, improving the stability and accuracy of the stretching process, and extending the service life of the equipment.

[0028] The hydraulic cylinder assembly 4 includes a piston rod 401, a connecting flange 402, and a hydraulic cylinder slide 403. The piston rod 401 can move left and right within the hydraulic cylinder assembly 4. The piston rod 401 is threadedly connected to the connecting flange 402 and screwed to the hydraulic cylinder slide 403, which guides and supports the piston rod 401. The connecting flange 402 is screwed to the movable clamp 3. The hydraulic cylinder assembly 4 provides strong tensile power, and the detachable connection between the piston rod 401 and the connecting flange 402, as well as the guiding and supporting function of the hydraulic cylinder slide 403, ensures accurate transmission of tensile force, improves the tensile effect, and facilitates equipment maintenance and repair.

[0029] The chain-shifting mechanism 5 is connected to a reducer 501 via a shaft. The reducer 501 is screwed to a motor base plate 502, which is mounted on the fixed clamp 2 with screws. Driven by the motor, the chain-shifting mechanism 5 moves the chain through the reducer 501. The chain-shifting mechanism 5 facilitates automatic chain transmission. The motor drives the reducer 501 to move the chain-shifting mechanism 5, thereby completing the precise chain shifting, improving work efficiency, reducing labor costs, and solving the problems of slow speed and inconvenient operation of existing stretching machines.

[0030] The clamping cylinder 6 is threadedly connected to the clamping mold adjusting block 602, and the clamping mold adjusting block 602 is screwed to the clamping mold 601. The clamping cylinder 6 is provided to facilitate quick adjustment and fixation according to different chain specifications, ensuring that the chain can be firmly clamped during the stretching process, preventing the chain from slipping or loosening, thereby ensuring the accuracy of the stretching dimensions, meeting the production needs of chains of different specifications, and improving the versatility and flexibility of the equipment.

[0031] The left and right ends of the slide shaft 7 are respectively threaded with a spoke-type sensor 701 and a slide shaft locking cap 702. The spoke-type sensor 701 is screwed to the fixed clamp 2, and the slide shaft locking cap 702 is screwed to the cylinder assembly 4. This can prevent the slide shaft 7 from moving axially, thereby ensuring the overall structural stability of the equipment and improving the safety and reliability of the stretching process.

[0032] When using the long chain stretching machine described in this embodiment, it should be fixed on the ground to perform the stretching process. That is, the chain derailment mechanism 5 rotates to drive the chain forward. After the chain advances 5 rings, it stops rotating. The clamping cylinder 6 extends to clamp the chain, and the hydraulic cylinder assembly 4 retracts to stretch the chain. After reaching the stretching size, the hydraulic cylinder assembly 4 moves forward, the clamping cylinder 6 opens, the chain derailment mechanism 5 rotates, and after the chain advances 5 rings, the long chain stretching process is completed.

[0033] The long chain stretching machine using the above implementation scheme effectively realizes the long chain stretching process and solves the problems of slow speed and inconvenient operation of existing stretching machines.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A long chain stretching machine, comprising a base (1), characterized in that: The base (1) is provided with a fixed clamp (2) and a hydraulic cylinder assembly (4); The hydraulic cylinder assembly (4) is fixedly connected to a movable clamp (3) and a slide shaft (7), with the movable clamp (3) located between the fixed clamp (2) and the hydraulic cylinder assembly (4); The slide shaft (7) passes through the movable clamp (3) and the fixed clamp (2) and is fixedly connected to the fixed clamp (2); The fixed clamp (2) and the movable clamp (3) are respectively provided with clamping cylinders (6) on the left and right sides; The fixed clamp (2) is provided with a chain mechanism (5) in front of it.

2. The long chain stretching machine according to claim 1, characterized in that: The base (1) is fixedly connected to the fixed clamp (2). The fixed clamp (2) is provided with a fixed clamp slide (201), and the movable clamp (3) is provided with a movable clamp slide (301). The fixed clamp slide (201) and the movable clamp slide (301) are used for the forward movement and stretching of the long chain.

3. The long chain stretching machine according to claim 2, characterized in that: The cylinder assembly (4) includes a piston rod (401), a connecting flange (402), and a cylinder slide (403). The piston rod (401) can move left and right within the cylinder assembly (4). The piston rod (401) is threadedly connected to the connecting flange (402). The piston rod (401) is screwed to the cylinder slide (403), and the cylinder slide (403) guides and supports the piston rod (401). The connecting flange (402) is screwed to the moving clamp (3).

4. The long chain stretching machine according to claim 3, characterized in that: The chain derailleur mechanism (5) is connected to a reducer (501) via a shaft. The reducer (501) is screwed to a motor base plate (502). The motor base plate (502) is mounted on the fixed clamp (2) via screws. The chain derailleur mechanism (5) derails the chain via the reducer (501) under the drive of the motor.

5. The long chain stretching machine according to claim 4, characterized in that: The clamping cylinder (6) is threadedly connected to a clamping mold adjusting block (602), and the clamping mold adjusting block (602) is screwed to a clamping mold (601).

6. The long chain stretching machine according to claim 5, characterized in that: The left and right ends of the slide shaft (7) are respectively threaded with a spoke sensor (701) and a slide shaft lock cap (702). The spoke sensor (701) is screwed to the fixed clamp (2), and the slide shaft lock cap (702) is screwed to the cylinder assembly (4), which can prevent the slide shaft (7) from moving axially.