Chain tensioning device

Abstract

The utility model discloses a chain tensioning device which comprises a mounting plate, a mounting seat is arranged at the top of the mounting plate, a rotatable stand column is arranged in the mounting seat, a supporting table is arranged at the top of the stand column in a lifting mode, and supporting plates with adjustable intervals are arranged at the end of the supporting table. A worm wheel is fixedly connected to the outer side of the section, located in the mounting base, of the stand column, a mounting sleeve is arranged on the outer side of the mounting base, the mounting sleeve communicates with the interior of the mounting plate, a worm is rotationally connected into the mounting sleeve, and the worm is in meshed connection with the worm wheel; according to the chain tensioning device, the whole supporting table is of an L-shaped structure, the distance between the supporting plates of the chain tensioning device can be adjusted, the chain tensioning force can be accurately adjusted in cooperation with the adjusting screw rod and the limiting rod on the supporting table, the chains in different directions and heights can be adjusted by adjusting the chain wheel in different circumferential directions and height positions, and the application range is widened.

Description

TECHNICAL FIELD

[0001] The utility model relates to chain tensioning technical field, concretely is a chain tensioning device. BACKGROUND

[0002] With the development of domestic motor technology, more and more power sources of mechanical processing or mechanical operation equipment are changed from gasoline engine to motor drive. The chain tensioning device that is changed also needs to adapt to high speed and low stability torque of motor drive.

[0003] At present, the chain is prone to slack in long-term use, which makes the chain easy to fall off in the running process, and personnel need to regularly overhaul the chain, which is more troublesome and affects use. According to the chain tensioning device disclosed in patent number CN 222277391 U, by setting the adjusting mechanism and the lifting mechanism, the two second bidirectional screw rods are controlled to rotate, driving the four lifting blocks to lift, and the four lifting blocks drive the two tensioning sprockets to lift. The chain can be tensioned during the lifting process, but the overall structure of the device is too complex, and the device is difficult to fix during operation, which needs to be fixed manually. The tensioning operation process of the sprocket is more troublesome. Therefore, we propose a chain tensioning device. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a chain tensioning device to solve the problems in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a chain tensioning device, comprising a mounting plate, a mounting seat is arranged at the top of the mounting plate, and a rotatable stand is arranged in the mounting seat, a supporting table is arranged at the top of the stand in a lifting manner, a supporting plate with adjustable spacing is arranged at the end of the supporting table, and a sprocket for tensioning the chain is rotatably arranged at the bottom of the supporting plate.

[0006] Preferably, the outer side of the stand in the mounting seat is fixedly connected with a worm gear, the outer side of the mounting seat is provided with a mounting sleeve, the mounting sleeve is in communication with the inside of the mounting plate, a worm is rotatably connected in the mounting sleeve, and the worm is meshed and connected with the worm gear.

[0007] Preferably, the whole supporting table is in L-shaped structure, a convex plate is slidably arranged at the top of the supporting table, an adjusting screw is threadedly connected in the convex plate, one end of the adjusting screw is rotatably connected with the end of the supporting table through a bearing, a slide hole is symmetrically formed on the surface of the convex plate outside the adjusting screw, a limiting rod is slidably connected in the slide hole, and the ends of the two limiting rods are slidably connected with the supporting plate through the supporting table.

[0008] Preferably, the outer side of the limiting rod between the support table and the support plate is sleeved with a first spring, and the two ends of the first spring are fixedly connected with the support plate and the support table respectively.

[0009] Preferably, the outer side of the bottom end of the stand is provided with an angle scale.

[0010] Preferably, the top of the mounting plate is provided with mounting holes in four corners.

[0011] Preferably, the two ends of the worm are provided with hexagonal bolt holes.

[0012] Preferably, the end of the adjusting screw away from the support plate is provided with a rotating handle.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. The spacing of the support plate can be adjusted, and the adjusting screw and the limiting rod on the support table are matched, so that the precise adjustment of the chain tensioning force is realized, the structure stability is enhanced through the spring inside the device, a certain impact force can be absorbed, the vibration of the chain tensioning device during work is reduced, and the durability and work reliability are improved.

[0015] 2. The chain tensioning device can tension the chain at different directions and height positions through the adjustment of different circumferences and height positions of the sprocket, and the application range is improved.

[0016] 3. The engagement design of the worm and the worm wheel ensures the stability and accuracy of the adjustment process, the stand can be rotated, the adjustment of the chain tensioning device is more accurate, the mounting holes on the mounting plate and the hexagonal bolt holes at the two ends of the worm make the whole device easy to connect and disassemble with other equipment, convenient to use, simplify the maintenance and replacement process, the angle scale at the bottom end of the stand provides clear adjustment indication, and the user can accurately adjust. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model;

[0018] Figure 2 It is a worm and worm gear connection structure schematic view of the utility model;

[0019] Figure 3 It is a worm structure schematic view of the utility model.

[0020] In the figure: 1, mounting plate; 2, stand; 3, support table; 4, support plate; 5, chain wheel; 6, mounting hole; 7, worm gear; 8, worm; 9, angle scale; 10, convex plate; 11, limiting rod; 12, adjusting screw; 13, No. 1 spring; 14, No. 2 spring; 15, rotating handle; 16, mounting sleeve; 17, hexagonal bolt hole; 18, mounting seat. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figure 1 The utility model provides a kind of technical scheme: a chain tensioning device, including mounting plate 1, the top of mounting plate 1 is provided with mounting seat 18, and mounting seat 18 is provided with rotatable stand 2, the top of stand 2 is provided with support table 3, and the end of support table 3 is provided with adjustable spacing support plate 4, and the bottom of support plate 4 is rotatably provided with chain wheel 5 for tensioning chain by bearing.

[0023] It should be noted that the top of support table 3 is provided with vertical clamping hole, clamping hole is matched and clamped on the outside of stand 2, fastening bolt is provided on the end of support table 3, and threaded hole is equidistantly provided on the outside of stand 2 along vertical direction, the fastening bolt on support table 3 is screw-connected in threaded hole on stand 2, and limiting lug is integrally arranged on the inner wall of support table 3, limiting slot is formed on the outside of stand 2, limiting lug on support table 3 is slidably arranged in limiting slot on stand 2 along vertical direction, for the stable lifting of support table 3 position, to adjust the position of chain wheel 5, for the tensioning of chain at different height positions.

[0024] Please refer to Figure 2 The outside of stand 2 is provided with mounting sleeve 16, and mounting sleeve 16 is communicated with the inside of mounting plate 1, worm 8 is rotatably connected in mounting sleeve 16, and worm 8 is meshingly connected with worm gear 7.

[0025] It should be noted that the meshing design of worm 8 and worm gear 7 ensures the stability and accuracy of the adjustment process, so that the adjustment of chain tensioning device is more accurate when stand 2 rotates, and different environments and needs are adapted.

[0026] Please refer to Figure 2The support platform 3 has an overall L-shaped structure. A protruding plate 10 is slidably provided on the top of the support platform 3. An adjusting screw 12 is internally threaded onto the protruding plate 10. One end of the adjusting screw 12 is rotatably connected to the end of the support platform 3 through a bearing. Sliding holes are symmetrically opened on the surface of the protruding plate 10 outside the adjusting screw 12. Limiting rods 11 are slidably connected in the sliding holes. The ends of the two limiting rods 11 slide through the support platform 3 and are fixedly connected to the support plate 4.

[0027] It should be noted that when using this utility model, the mounting plate 1 is fixedly installed on the support surface with fixing bolts. The position of the sprocket 5 is adjusted according to the position of the chain to be tensioned. During adjustment, simply insert the hexagonal slotted rod into the hexagonal bolt hole 17 at the end of the worm 8 to control the rotation of the worm 8. The rotation of the column 2 is controlled by the meshing connection between the worm 8 and the worm wheel 7, thereby adjusting the circumferential position of the sprocket 5. The chain to be tensioned is connected to the sprocket 5. Rotating the rotating handle 15 controls the rotation of the adjusting screw 12 to adjust the position of the sprocket 5, so that the sprocket 5 tensions the chain.

[0028] Please see Figure 2 A first spring 13 is sleeved on the outside of the limiting rod 11 between the support platform 3 and the support plate 4, and the two ends of the first spring 13 are fixedly connected to the support plate 4 and the support platform 3 respectively. A second spring 14 is sleeved on the outside of the limiting rod 11 between the protrusion plate 10 and the support platform 3, and the two ends of the second spring 14 are fixedly connected to the support platform 3 and the protrusion plate 10 respectively.

[0029] It should be noted that spring 13 and spring 24 enhance the stability of the structure, absorb a certain amount of impact force, and reduce the vibration of the chain tensioning device during operation.

[0030] Please see Figure 1 and Figure 2 Angle scale lines 9 are provided on the outer side of the bottom end of column 2.

[0031] It should be noted that the angle scale line 9 set at the bottom of the column 2 provides clear adjustment instructions, making it convenient for users to make precise adjustments and avoiding unnecessary errors.

[0032] Please see Figure 1 Mounting holes 6 are provided at the four corners of the top of the mounting plate 1.

[0033] It should be noted that the design of the mounting holes 6 on the mounting plate 1 makes the entire device easy to connect and disassemble with other equipment, simplifying the maintenance and replacement process.

[0034] Please see Figure 3 Both ends of the worm gear 8 are provided with hexagonal bolt holes 17.

[0035] It should be noted that the hexagonal bolt hole 17 at both ends of the worm 8 facilitates the insertion of a hexagonal control lever to control the rotation of the worm 8.

[0036] Please refer to Figure 2 The end of the adjusting screw 12 away from the support plate 4 is provided with a rotating handle 15.

[0037] It should be noted that the rotating handle 15 is provided to facilitate the control of the rotation of the adjusting screw 12, thereby adjusting the position of the chain wheel 5.

[0038] In addition, the terms "first", "second", "third", "fourth" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features, so that the features with "first", "second", "third", "fourth" can be explicitly or implicitly include at least one of the features.

[0039] In the present application, unless otherwise expressly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screw connection" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise expressly limited, for those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0040] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A chain tensioning device, characterized in that, The system includes a mounting plate (1), a mounting base (18) on the top of the mounting plate (1), a rotatable column (2) inside the mounting base (18), a support platform (3) on the top of the column (2) that can be raised and lowered, and a support plate (4) with adjustable spacing at the end of the support platform (3). A sprocket (5) for tensioning the chain is rotatably provided at the bottom of the support plate (4) through a bearing.

2. The chain tensioning device according to claim 1, characterized in that: The column (2) is fixed to the outer side of a section inside the mounting base (18) with a worm gear (7). The mounting base (18) is provided with a mounting sleeve (16) on the outer side, and the mounting sleeve (16) communicates with the inside of the mounting plate (1). A worm (8) is rotatably connected inside the mounting sleeve (16), and the worm (8) meshes with the worm gear (7).

3. The chain tensioning device according to claim 1, characterized in that: The support platform (3) is in an L-shaped structure. A convex plate (10) is slidably provided on the top of the support platform (3). An adjusting screw (12) is threadedly connected to the convex plate (10). One end of the adjusting screw (12) is rotatably connected to the end of the support platform (3) through a bearing. A sliding hole is symmetrically opened on the surface of the convex plate (10) on the outside of the adjusting screw (12). A limit rod (11) is slidably connected in the sliding hole. The ends of the two limit rods (11) slide through the support platform (3) and are fixed to the support plate (4).

4. A chain tensioning device according to claim 3, characterized in that: A first spring (13) is sleeved on the outside of the limiting rod (11) between the support platform (3) and the support plate (4), and the two ends of the first spring (13) are fixedly connected to the support plate (4) and the support platform (3) respectively. A second spring (14) is sleeved on the outside of the limiting rod (11) between the convex plate (10) and the support platform (3), and the two ends of the second spring (14) are fixedly connected to the support platform (3) and the convex plate (10) respectively.

5. A chain tensioning device according to claim 1, characterized in that: Angle scale lines (9) are provided on the outer side of the bottom end of the column (2).

6. A chain tensioning device according to claim 1, characterized in that: Mounting holes (6) are provided at the four corners of the top of the mounting plate (1).

7. A chain tensioning device according to claim 2, characterized in that: Both ends of the worm (8) are provided with hexagonal bolt holes (17).

8. A chain tensioning device according to claim 3, characterized in that: The adjusting screw (12) is provided with a rotating handle (15) at the end away from the support plate (4).

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