A hydraulic chain tightener with convenient adjustment

Abstract

The utility model relates to hydraulic chain tightener technical field, and disclose a kind of hydraulic chain tightener of easy adjustment, including hydraulic pump, the one end of hydraulic pump is connected with hydraulic pipe, the other end of hydraulic pipe is connected with cylinder, the side surface of cylinder is provided with connecting block Connecting block is provided with chain, this easy adjustment's hydraulic chain tightener is provided with control assembly, when rotating when disc drives threaded rod in connecting block, moving block can drive chain sliding in connecting block, when the fixed block fixed on the surface of moving block is in contact with the section of sliding rod, sliding rod can move towards the outside of connecting block, and be in contact with the side surface of movable rod, when movable rod is contacted, it can be folded under the action of torsion spring, and no longer with the side surface of connecting block is adhered, to operate operator, express that chain has been in smallest interval position, avoid the interval between chain too small to affect subsequent use.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic chain tensioner technology, specifically a hydraulic chain tensioner that is easy to adjust. Background Technology

[0002] To ensure the safe operation of scraper conveyors, the scraper chain should have a certain tension. This is typically achieved using a chain tensioner to apply a pre-tension to the scraper chain. During tensioning, one end of the scraper chain is fixed to the side plate of the head frame or the chain chute, while the other end is looped around the head sprocket, causing the sprocket to reverse and tighten the scraper chain. When the scraper chain tension is appropriate, the chain tensioner brakes the sprocket to prevent the scraper chain from loosening. After the two scraper chain ends are connected, the chain tensioner is released. Most scraper conveyors use this tensioning method. The main tensioning devices are disc chain tensioners and hydraulic chain tensioners. Disc chain tensioners utilize the motor in the conveyor drive unit to provide power to the sprocket to tension the scraper chain. A manual clamping mechanism is used for braking, and this method is mainly suitable for low-power scraper conveyors.

[0003] According to a publicly disclosed hydraulic chain tensioner that is easy to adjust (publication number: CN220484425U), the above application uses a knob to rotate a bidirectional screw rod, causing two sets of connecting blocks to move relative to each other along a slide bar, thereby changing the spacing between two adjacent sets of hook chain sections to adapt to different spacings of scraper conveyor scraper chains. Although this method can adjust the spacing, it lacks a structure to limit the minimum spacing. When the two sets of scraper chains are too close, they will collide and are very easy to get tangled, affecting subsequent connections. To address this problem, we propose a hydraulic chain tensioner that is easy to adjust. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic chain tensioner that is easy to adjust, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a conveniently adjustable hydraulic chain tensioner, comprising a hydraulic pump, one end of which is connected to a hydraulic pipe, the other end of which is connected to a cylinder, a connecting block provided on the side of the cylinder, a chain disposed within the connecting block, a hook fixedly installed at the bottom of the chain, and a control component and a driven component disposed within the connecting block, the control component comprising: A movable block, the bottom of which is fixedly connected to the top of the chain, and a fixed block is fixedly installed on the top of the movable block; A turntable is rotatably connected to the side of a connecting block. A threaded rod is fixedly installed on the side of the turntable. The threaded rod passes through the connecting block and is rotatably connected to it. The threaded rod also passes through a moving block and is threadedly connected to it. An adjusting component is provided inside the connecting block to limit the chain spacing, thereby adjusting the moving speed of the moving block and the chain to avoid collisions and damage between hooks due to excessive moving speed.

[0006] Preferably, the adjusting member includes a sliding rod that passes through the connecting block and is slidably connected to the connecting block. When the sliding rod is abutted, it can slide within the connecting block.

[0007] Preferably, the outer wall of the slide rod is fixedly connected to one end of the spring, and the other end of the spring is fixedly installed on the inner wall of the connecting block. When the cut surface of the slide rod is no longer in contact, it can spring up from the connecting block under the action of the spring.

[0008] Preferably, the movable rod on the side of the connecting block is hinged, and the side of the movable rod is fixedly connected to one side of the torsion spring. The other side of the torsion spring is fixedly installed on the side of the connecting block. When the movable rod is no longer in contact, it can spring up from the side of the connecting block under the action of the torsion spring.

[0009] Preferably, the side of the movable block is fitted with the inner wall of the connecting block, and a protrusion is fixedly installed on the inner wall of the connecting block. When the movable block is subjected to force, it can slide along the inner wall of the connecting block, and the protrusion in the connecting block can limit the moving speed of the movable block.

[0010] Preferably, the driven component includes a second spring, one end of which is fixedly installed on the inner wall of the moving block, and the other end of which is fixedly installed on the side of the slide plate. When the slide plate is no longer under force, it can bounce off the moving block under the action of the second spring.

[0011] Preferably, a flat rod is fixedly installed on the inner wall of the movable block, the flat rod passes through the slide plate and is slidably connected to the slide plate, and a support block is fixedly installed on the top of the slide plate. The flat rod can ensure the stability of the slide plate during lateral movement.

[0012] Compared with the prior art, this utility model provides a hydraulic chain tensioner that is easy to adjust, and has the following beneficial effects: 1. This easily adjustable hydraulic chain tensioner, equipped with a control component, allows the turntable to drive the threaded rod to rotate within the connecting block. The moving block then drives the chain to slide within the connecting block. When the fixed block on the surface of the moving block abuts against the tangential surface of the sliding rod, the sliding rod moves outward from the connecting block and abuts against the side of the movable rod. When the movable rod is abutted, it folds under the action of a torsion spring and no longer adheres to the side of the connecting block. This provides an operational reminder to the operator, indicating that the chain is at its minimum spacing position, preventing excessively small chain spacing from affecting subsequent use.

[0013] 2. This easily adjustable hydraulic chain tensioner, by means of a driven component, allows the moving block to slide along the connecting block, causing the protrusion to abut against the tangential surface of the support block. When the tangential surface of the support block is abutted, it can drive the slide plate to slide along the surface of the flat rod and compress the second spring. Since there are multiple sets of protrusions, the support block can be abutted multiple times, thereby adjusting the moving speed of the moving block and the chain, and preventing collisions and damage between hooks due to excessively fast movement. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a top view sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the fixed frame structure of this utility model; Figure 4 This is a schematic diagram of the control component structure of this utility model.

[0015] In the diagram: 1. Hydraulic pump; 2. Hydraulic pipe; 3. Cylinder; 4. Connecting block; 5. Chain; 6. Hook; 7. Control component; 71. Moving block; 72. Fixed block; 73. Turntable; 74. Threaded rod; 75. Adjusting component; 751. Slide rod; 752. Spring 1; 753. Movable rod; 754. Torsion spring; 755. Protrusion; 8. Driven component; 81. Spring 2; 82. Slide plate; 83. Flat rod; 84. Support block. Detailed Implementation

[0016] like Figures 1-4As shown, this utility model provides a technical solution: a conveniently adjustable hydraulic chain tensioner, including a hydraulic pump 1, one end of which is connected to a hydraulic pipe 2, and the other end of which is connected to a cylinder 3. A connecting block 4 is provided on the side of the cylinder 3, and a chain 5 is provided inside the connecting block 4. A hook 6 is fixedly installed at the bottom of the chain 5. A control component 7 and a driven component 8 are provided inside the connecting block 4. The control component 7 includes: a moving block 71, a fixed block 72, a turntable 73, a threaded rod 74, and an adjusting component 75. The bottom of the moving block 71 is fixedly connected to the top of the chain 5, and the fixed block 72 is fixedly installed at the top of the moving block 71. The turntable 73 is rotatably connected to the side of the connecting block 4, and the threaded rod 75 is fixedly installed on the side of the turntable 73. 4. The threaded rod 74 passes through the connecting block 4 and is rotatably connected to the connecting block 4. The threaded rod 74 passes through the moving block 71 and is threadedly connected to the moving block 71. The connecting block 4 is provided with an adjusting member 75 to limit the spacing of the chain 5. The spacing between the two sets of chains 5 is adjusted. When the moving block 71 slides along the inside of the connecting block 4, the protrusion 755 will abut against the tangent of the support block 84. When the tangent of the support block 84 is abutted, it can drive the slide plate 82 to slide along the surface of the flat rod 83 and squeeze the spring 81. Since there are multiple sets of protrusions 755, the support block 84 can be abutted multiple times, thereby adjusting the moving speed of the moving block 71 and the chain 5 to avoid collision and damage between the hooks 6 due to excessive moving speed.

[0017] The adjusting component 75 includes a slide rod 751, which passes through and is slidably connected to the connecting block 4. When the slide rod 751 is pressed against something, it can slide within the connecting block 4. The outer wall of the slide rod 751 is fixedly connected to one end of a spring 752, and the other end of the spring 752 is fixedly installed on the inner wall of the connecting block 4. When the cut surface of the slide rod 751 is no longer pressed against something, it can spring up from within the connecting block 4 under the action of the spring 752. The side movable rod 753 of the connecting block 4 is hinged, and the side of the movable rod 753 is fixedly connected to one side of a torsion spring 754. The other side of the torsion spring 754 is fixedly installed on the side of the connecting block 4. When the movable rod 753 is no longer pressed against something, it can spring up from the side of the connecting block 4 under the action of the torsion spring 754. The side of the movable block 71 fits against the inner wall of the connecting block 4. A protrusion 755 is fixedly installed on the inner wall of the connecting block 4. When the movable block 71 is under force, it can slide along the inner wall of the connecting block 4. The protrusion 755 in the connecting block 4 can limit the moving speed of the movable block 71. The driven component 8 includes a second spring 81. One end of the second spring 81 is fixedly installed on the inner wall of the movable block 71, and the other end of the second spring 81 is fixedly installed on the side of the slide plate 82. When the slide plate 82 is no longer under force, it can bounce off the movable block 71 under the action of the second spring 81. A flat rod 83 is fixedly installed on the inner wall of the movable block 71. The flat rod 83 passes through the slide plate 82 and is slidably connected to the slide plate 82. A support block 84 is fixedly installed on the top of the slide plate 82. The flat rod 83 can ensure the stability of the slide plate 82 during lateral movement.

[0018] In this utility model, when it is necessary to adjust the spacing between the chains 5 according to usage requirements, the turntable 73 is turned on the side of the connecting block 4. The turntable 73 drives the threaded rod 74 to rotate within the connecting block 4. When the threaded rod 74 rotates, the moving block 71 can slide along the inner wall of the connecting block 4. The chain 5 fixed at the bottom of the moving block 71 moves synchronously, and the spacing between the two sets of chains 5 is adjusted. When the moving block 71 slides along the connecting block 4, the protrusion 755 will abut against the tangential surface of the support block 84. When the tangential surface of the support block 84 is abutted, it can drive the sliding plate 82 to slide along the surface of the flat rod 83 and compress the spring 81. The protrusion 755 is provided with multiple The system allows for multiple contact between the support block 84 and the moving block 71, thus adjusting the moving speed of the chain 5 and preventing collisions or damage between the hooks 6 due to excessive speed. During movement, when the fixing block 72 on the surface of the moving block 71 contacts the cross-section of the slide bar 751, the slide bar 751 can move outward from the connecting block 4 and contact the side of the movable rod 753. When the movable rod 753 is contacted, it can be folded under the action of the torsion spring 754 and no longer adhere to the side of the connecting block 4. This serves as an operational reminder to the operator, indicating that the spacing between the chains 5 is at its minimum, preventing the spacing between the chains 5 from being too small and affecting subsequent use.

[0019] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A conveniently adjustable hydraulic chain tensioner, comprising a hydraulic pump (1), characterized in that: The hydraulic pump (1) is connected to one end of the hydraulic pipe (2), and the other end of the hydraulic pipe (2) is connected to the cylinder (3). A connecting block (4) is provided on the side of the cylinder (3). A chain (5) is provided inside the connecting block (4). A hook (6) is fixedly installed at the bottom of the chain (5). A control component (7) and a driven component (8) are provided inside the connecting block (4). The control component (7) includes: The bottom of the movable block (71) is fixedly connected to the top of the chain (5), and a fixed block (72) is fixedly installed on the top of the movable block (71). Turntable (73) is rotatably connected to the side of connecting block (4). A threaded rod (74) is fixedly installed on the side of turntable (73). The threaded rod (74) passes through connecting block (4) and is rotatably connected to connecting block (4). The threaded rod (74) passes through moving block (71) and is threadedly connected to moving block (71). An adjusting component (75) is provided inside connecting block (4) to limit the spacing of chain (5).

2. The hydraulic chain tensioner with convenient adjustment according to claim 1, characterized in that: The adjusting member (75) includes a slide rod (751) that passes through the connecting block (4) and is slidably connected to the connecting block (4).

3. The hydraulic chain tensioner with convenient adjustment according to claim 2, characterized in that: The outer wall of the slide bar (751) is fixedly connected to one end of the spring (752), and the other end of the spring (752) is fixedly installed on the inner wall of the connecting block (4).

4. The hydraulic chain tensioner that is easy to adjust according to claim 1, characterized in that: The side movable rod (753) of the connecting block (4) is hinged, and the side of the movable rod (753) is fixedly connected to one side of the torsion spring (754), while the other side of the torsion spring (754) is fixedly installed on the side of the connecting block (4).

5. The hydraulic chain tensioner with convenient adjustment according to claim 1, characterized in that: The side of the movable block (71) is in contact with the inner wall of the connecting block (4), and a protrusion (755) is fixedly installed on the inner wall of the connecting block (4).

6. The hydraulic chain tensioner with convenient adjustment according to claim 1, characterized in that: The driven component (8) includes a second spring (81), one end of which is fixedly installed on the inner wall of the moving block (71), and the other end of which is fixedly installed on the side of the sliding plate (82).

7. The hydraulic chain tensioner for easy adjustment according to claim 6, characterized in that: A flat rod (83) is fixedly installed on the inner wall of the movable block (71). The flat rod (83) passes through the slide plate (82) and is slidably connected to the slide plate (82). A support block (84) is fixedly installed on the top of the slide plate (82).

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