Tensioning structure for preventing chain from loosening

Abstract

The utility model discloses a tensioning structure for preventing a chain from loosening, which relates to the technical field of chains and comprises a mounting plate, the left side and the right side of the front end of the mounting plate are each movably provided with a group of large chain wheels through a first rotating shaft, and two groups of sliding blocks are installed in the middle of the front end of the mounting plate in a left-right sliding mode. Positioning wheels are movably installed at the front ends of the sliding blocks through third rotating shafts, small chain wheels are arranged at the upper ends of the two sets of positioning wheels and movably installed on the installation plate through second rotating shafts, and chains are installed among the two sets of large chain wheels, the two sets of positioning wheels and the small chain wheels in a tensioning mode. The tensioning degree of the chain is adjusted by starting the telescopic device to adjust the positions of the two sets of positioning wheels, lubricating grease is added to the oval rubber ball by unscrewing the mounting cover, the oval rubber ball is pinched regularly to enable the lubricating grease to be sprayed out through the nozzle, the chain is lubricated regularly, and the chain is prevented from loosening due to too large friction.

Description

TECHNICAL FIELD

[0001] The utility model relates to chain technology field especially a tensioning structure of preventing chain slack. BACKGROUND

[0002] Chain is generally metal chain ring or annular, and is mostly used for mechanical transmission and traction. Chain-shaped objects used for obstructing traffic passages (such as in streets, river or harbor entrances), chains used for mechanical transmission, in similar products, according to the basic structure of the chain, i.e. according to the element shape, parts and positions engaged with the chain, and the size ratio between parts, the chain product series is divided, there are many types of chains, but their basic structures are only the following several types, and other types are deformations of the several types, we can see from the chain structures of the several types that most chains are composed of chain plates, chain pins, shaft sleeves and other components.

[0003] At present, the features of similar market are that normal slack-preventing structures on the market are fixed at one end and fastened by bolts at the other end, the structure will be slackened after being used for a period of time, and the bolts need to be fastened again, which is troublesome, and some structures are inconvenient to operate. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the above-mentioned defects in the prior art, the utility model provides a tensioning structure for preventing chain slack.

[0005] The utility model solves the technical problems by adopting the following technical scheme: a tensioning structure for preventing chain slack, comprising a mounting plate, a group of large chain wheels are movably installed on the left and right sides of the front end of the mounting plate through first rotating shafts, two groups of sliding blocks are slidably installed on the middle part of the front end of the mounting plate, positioning wheels are movably installed on the front end of the sliding blocks through third rotating shafts, small chain wheels are arranged on the upper ends of the two groups of positioning wheels, the small chain wheels are movably installed on the mounting plate through second rotating shafts, and chains are tensioned and installed between the two groups of large chain wheels, the two groups of positioning wheels and the small chain wheels.

[0006] Further, two groups of telescopic devices are fixedly installed on the front end of the mounting plate, and the telescopic ends of the telescopic devices are fixedly installed with sliding blocks.

[0007] Further, an oval rubber ball is arranged on the left and right sides of the front end of the mounting plate through a clamp, the oval rubber ball is hollow and filled with lubricating oil, and a nozzle is arranged on the lower end of the oval rubber ball.

[0008] Further, an inlet part is arranged on the upper end of the oval rubber ball, a mounting cover is detachably connected in the inlet part through threads, and a friction part is arranged on the outer side of the mounting cover.

[0009] Further, a plurality of groups of air holes are arranged in the mounting cover.

[0010] Further, the nozzle is located above the chain.

[0011] The utility model discloses the beneficial effect is: through starting telescopic device adjustment two group position of positioning wheel, realize adjustment chain's tension, through unscrewing installation cover to elliptic rubber ball adds lubricating butter, regularly kneads elliptic rubber ball, makes lubricating butter spray out through nozzle, realizes regularly to chain lubrication, prevents chain and looseness because of too big friction. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model is further described below in connection with the drawings and examples.

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 It is the bottom view of the utility part of the utility model;

[0015] Figure 3 It is the front view of the elliptic rubber ball of the utility model;

[0016] Figure 4 It is the partial sectional view of the elliptic rubber ball of the utility model.

[0017] In the drawing: 1. mounting plate, 2. first rotation axis, 3. big chain wheel, 4. second rotation axis, 5. small chain wheel, 6. sliding block, 7. telescopic device, 8. third rotation axis, 9. positioning wheel, 10. chain, 11. elliptic rubber ball, 111. nozzle, 112. feeding part, 12. installation cover, 121. air hole, 13. friction part, 14. clamp. DETAILED DESCRIPTION

[0018] In order to more clearly illustrate the technical scheme of the utility model, the utility model is further described below in connection with the drawings, and obviously, the drawings described below are only one embodiment of the utility model, and for the ordinary skilled person in the art, under the premise of not paying creative labor, according to this drawing and embodiment, other embodiments obtained all belong to the protection scope of the utility model.

[0019] For example, Figure 1 And Figure 2As shown, the utility model offt include mounting plate 1, the left and right sides of the front end of mounting plate 1 each through first rotation axis 2 movably install a group of big chain wheel 3, the middle part of the front end of mounting plate 1 is slidably installed two groups of slider 6, the front end of mounting plate 1 is fixedly installed two groups of telescopic device 7, the telescopic end of telescopic device 7 is fixedly installed slider 6, the front end of slider 6 is movably installed positioning wheel 9 through third rotation axis 8, the upper end of two groups of positioning wheel 9 is provided with small chain wheel 5, small chain wheel 5 is movably installed in mounting plate 1 through second rotation axis 4, two groups of big chain wheel 3, two groups of positioning wheel 9 and small chain wheel 5 are tensioned and installed chain 10.

[0020] As Figures 1 to 4 As shown, the left and right sides of the front end of mounting plate 1 each through the clamp 14 is provided with a group of oval rubber ball 11, the inside of oval rubber ball 11 is hollow and fills with lubricating oil, the lower end of oval rubber ball 11 is provided with nozzle 111, the nozzle 111 is located above chain 10, the upper end of oval rubber ball 11 is provided with feed part 112, the inside of feed part 112 is detachably connected with mounting cover 12 through screw thread, the outside of mounting cover 12 is provided with friction part 13, the inside of mounting cover 12 is provided with several groups of air hole 121.

[0021] The utility model is in use, through the adjustment of two groups of positioning wheel 9 of telescopic device 7, realizes the adjustment of the tension of chain 10, through unscrewing mounting cover 12 and adding lubricating butter to oval rubber ball 11, regularly kneads oval rubber ball 11, so that lubricating butter is sprayed out through nozzle 111, realizes regularly lubricating chain 10, prevents chain from loosening due to too much friction.

[0022] The above embodiment is only exemplary embodiment of the utility model and is not used to limit the utility model, and the protection scope of the utility model is defined by the claims, and those skilled in the art can make various modifications or equivalent replacements to the utility model within the utility model's essence and protection scope, and the modification or equivalent replacement should be regarded as falling within the protection scope of the utility model.

Claims

1. A tensioning structure for preventing slackening of a chain, comprising a mounting plate (1), characterized in that: The left and right sides of the front end of the mounting plate (1) are movably mounted with a set of large chain wheels (3) through first rotating shafts (2), the middle part of the front end of the mounting plate (1) is slidably mounted with two sets of sliding blocks (6), the front end of the sliding block (6) is movably mounted with a positioning wheel (9) through a third rotating shaft (8), the upper end of the two sets of positioning wheels (9) is provided with a small chain wheel (5), the small chain wheel (5) is movably mounted on the mounting plate (1) through a second rotating shaft (4), the two sets of large chain wheels (3), the two sets of positioning wheels (9) and the small chain wheel (5) are tensioned with a chain (10), the front end of the mounting plate (1) is fixedly mounted with two sets of telescopic devices (7), and the telescopic end of the telescopic device (7) is fixedly mounted with a sliding block (6).

2. The chain slack-preventing tensioning structure according to claim 1, wherein The left and right sides of the front end of the mounting plate (1) are movably mounted with a set of oval rubber balls (11) through clamps (14), the oval rubber balls (11) are hollow and filled with lubricating oil, and the lower end of the oval rubber ball (11) is provided with a nozzle (111).

3. The chain tensioning structure according to claim 2, wherein The upper end of the oval rubber ball (11) is provided with a feeding part (112), the inside of the feeding part (112) is detachably connected with a mounting cover (12) through threads, and the outer side of the mounting cover (12) is provided with a friction part (13).

4. The chain tensioning structure according to claim 3, wherein The inside of the mounting cover (12) is provided with a plurality of groups of ventilation holes (121).

5. The chain slack-preventing tensioning structure according to claim 4, wherein The nozzle (111) is located above the chain (10).

Images