Novel tensioning wheel

Abstract

A novel tensioning wheel comprises a tensioning wheel body, a connecting arm is installed on the tensioning wheel body, the other end of the connecting arm is movably connected with an installation base, a cavity with one end open is longitudinally formed in the installation base, a butt joint strip is arranged between the connecting arm and the installation base, one end of the butt joint strip is fixedly connected with the connecting arm, and the other end of the butt joint strip is fixedly connected with the installation base. The other end of the butt joint strip is inserted into the cavity; a lead screw and a bearing are further arranged in the cavity, the lead screw is connected with the mounting base through the bearing, the middle of the lead screw is connected with a worm gear through a spline, a screw hole is formed in the end, facing the lead screw, of the butt joint strip, and the lead screw is meshed with the screw hole. A worm is rotatably arranged on the mounting seat in the horizontal direction perpendicular to the butt joint strip, and the worm is meshed with the worm gear; the device has the advantages of being simple in structure and capable of adjusting the tightness degree of the tensioning wheel in a stepless mode.

Description

Technical field:

[0001] The utility model relates to the technical field of engineering machinery, in particular to a novel tensioner pulley. Background technology:

[0002] The tensioner is mainly composed of a fixed housing, a tensioning arm, a wheel body, a torsion spring, a rolling bearing and a spring sleeve, etc. It can automatically adjust the tension according to the different tightness of the belt, making the transmission system stable, safe and reliable. At present, some belt tensioner assemblies lack a structure to adjust their length when in use. In this way, during the installation process, the wheel body cannot contact the belt due to insufficient size, so that the belt tensioner assembly cannot play the role of tightening the belt. Therefore, it is necessary to improve based on the shortcomings of existing products. Summary of the invention:

[0003] In order to solve the above problems and overcome the shortcomings of the prior art, the utility model provides a new tensioner with a simple structure and capable of steplessly adjusting the tightness of the tensioner.

[0004] To achieve the above-mentioned purpose, the utility model provides a novel tensioner, including a tensioner, a connecting arm is mounted on the tensioner, the other end of the connecting arm is movably connected to a mounting seat, a cavity with one end open is longitudinally arranged inside the mounting seat, a docking strip is arranged between the connecting arm and the mounting seat, one end of the docking strip is fixedly connected to the connecting arm, and the other end of the docking strip is inserted and arranged inside the cavity;

[0005] A screw rod and a bearing are also arranged inside the cavity. The screw rod is connected to the mounting seat through the bearing. The middle part of the screw rod is connected to a worm gear through a spline. A thread hole is arranged at one end of the docking strip facing the screw rod, and the screw rod meshes with the thread hole.

[0006] The mounting seat is rotatably provided with a worm in a horizontal direction perpendicular to the butt joint strip, and the worm is meshed with the worm wheel.

[0007] Furthermore, an adjusting bolt is provided on the mounting seat, and the adjusting bolt is fixedly connected to one end of the worm in the cavity, and the worm can be rotated synchronously by rotating the adjusting bolt.

[0008] Furthermore, a track groove is arranged on the inner wall of the cavity, and the side wall of the docking strip is slidably arranged in the track groove.

[0009] Furthermore, the tensioning wheel is rotatably hinged to the connecting arm.

[0010] Furthermore, the length of the butt joint strip is smaller than the depth of the cavity.

[0011] Furthermore, a sealing ring is provided between the butt joint strip and the inner wall of the cavity.

[0012] The beneficial effects of the utility model are:

[0013] The new tensioner provided by the utility model has the advantages of simple structure and stepless adjustment of the tightness of the tensioner. By rotating the turbine, the screw rod can be driven to rotate. One end of the screw rod is connected to the mounting seat and can rotate around it. The other end of the screw rod is engaged with the thread hole. As the screw rod rotates, the docking strip can be driven to move, thereby driving the connecting arm and the tensioner to move. At the same time, this movement is steplessly adjusted and linear, the adjustment method is smoother and the effect is more precise. Description of the drawings:

[0014] Attached Figure 1 It is a structural schematic diagram of the utility model;

[0015] Attached Figure 2 It is a perspective structural schematic diagram of the utility model;

[0016] Attached Figure 3 It is an enlarged schematic diagram of the fine-tuning device of the utility model;

[0017] In the attached figure: 1, tensioner, 2, worm, 3, connecting arm, 4, mounting seat, 5, docking strip, 6, cavity, 7, thread hole, 8, screw, 9, adjusting bolt, 10, worm wheel. Specific implementation method:

[0018] In order to make the purpose, technical scheme and advantages of the present invention more clear, the following will be combined with the appendix of the present invention. Figure 1 ~Attached Figure 3 , the utility model is described in more detail.

[0019] The utility model provides a new tensioning wheel 1, including a tensioning wheel 1, a connecting arm 3 is installed on the tensioning wheel 1, the other end of the connecting arm 3 is movably connected to a mounting seat 4, a cavity 6 with one end open is longitudinally arranged inside the mounting seat 4, a docking strip 5 is arranged between the connecting arm 3 and the mounting seat 4, one end of the docking strip 5 is fixedly connected to the connecting arm 3, and the other end of the docking strip 5 is inserted and arranged inside the cavity 6; a screw rod 8 and a bearing are also arranged inside the cavity 6, the screw rod 8 is connected to the mounting seat 4 through the bearing, the middle part of the screw rod 8 is connected to a worm gear 10 through a spline, and a wire is arranged on one end of the docking strip 5 facing the screw rod 8 Hole 7, screw rod 8 meshes with screw hole 7; the mounting seat 4 is rotatably provided with a worm 2 in a horizontal direction perpendicular to the docking strip 5, and the worm 2 meshes with a worm wheel 10; an adjusting bolt 9 is provided on the mounting seat 4, and the adjusting bolt 9 is fixedly connected to one end of the worm 2 in the cavity 6, and the worm 2 can be rotated synchronously by rotating the adjusting bolt 9; a track groove is provided on the inner wall of the cavity 6, and the side wall of the docking strip 5 is slidably arranged in the track groove; the tensioner 1 is hinged to the connecting arm 3 in a rotatable manner; the length of the docking strip 5 is less than the depth of the cavity 6; a sealing ring is provided between the docking strip 5 and the inner wall of the cavity 6.

[0020] One embodiment of the present invention is as follows:

[0021] The novel tensioner 1 is connected to a connecting arm 3 in a rotatable manner, and the other end of the connecting arm 3 is movably connected to a mounting seat 4, so that the connecting arm 3 and the mounting seat 4 can move relative to each other.

[0022] A cavity 6 with an open end is longitudinally arranged inside the mounting seat 4, and a docking strip 5 is arranged between the connecting arm 3 and the mounting seat 4. One end of the docking strip 5 is fixedly connected to the connecting arm 3, and the other end of the docking strip 5 is inserted into the cavity 6; the connecting arm 3 and the mounting seat 4 are connected together through the docking strip 5, and the distance between the tensioner and the mounting seat 4 is adjusted by a fine-tuning device.

[0023] The fine-tuning device includes a worm wheel 10, a worm 2, a thread hole 7 and a screw 8. The worm wheel 10 and the worm 2 cooperate with each other, and the thread hole 7 and the screw 8 cooperate with each other. At the same time, the worm wheel 10 is connected to the screw 8 through a spline. The worm 2 drives the worm wheel 10 to rotate. When the worm wheel 10 rotates, the screw 8 also rotates synchronously. Since the position of the screw 8 is fixed and can only rotate, the thread hole 7 can be moved, thereby driving the connecting arm 3 to move.

[0024] A screw rod 8 and a bearing are also provided inside the cavity 6. The screw rod 8 is connected to the mounting seat 4 through the bearing to determine the position of the screw rod 8. The middle part of the screw rod 8 is connected to the worm wheel 10 through a spline. A thread hole 7 is provided at one end of the docking strip 5 facing the screw rod 8, and the screw rod 8 is meshed with the thread hole 7; the mounting seat 4 is rotatably provided with a worm 2 in a horizontal direction perpendicular to the docking strip 5, and the worm 2 is meshed with the worm wheel 10; this movement is steplessly adjusted and linear, and the adjustment method is smoother and the effect is more precise.

[0025] An adjusting bolt 9 is provided on the mounting seat 4 , and the adjusting bolt 9 is fixedly connected to the worm 2 in the cavity 6 . The adjusting bolt 9 is a hexagon socket bolt, which is convenient and practical.

[0026] A track groove is arranged on the inner wall of the cavity 6, and the side wall of the docking strip 5 is slidably arranged in the track groove, so as to ensure that the movement of the docking strip 5 is linear and will not shake.

[0027] The length of the butt joint strip 5 is smaller than the depth of the cavity 6 , and when the butt joint strip 5 is completely returned to the cavity 6 , the ends of the butt joint strip 5 will not touch the turbine 2 , and will not conflict with each other.

[0028] A sealing ring is provided between the butt joint strip 5 and the inner wall of the cavity 6. When a gap appears between the connecting arm 3 and the mounting seat 4, external debris will not enter the cavity.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel tensioner pulley, comprising a tensioner pulley, characterized in that: The tensioner is provided with a connecting arm, the other end of which is movably connected to a mounting seat, a cavity with one end open is longitudinally arranged inside the mounting seat, a docking strip is arranged between the connecting arm and the mounting seat, one end of the docking strip is fixedly connected to the connecting arm, and the other end of the docking strip is inserted and arranged inside the cavity; A screw rod and a bearing are also provided inside the cavity, the screw rod is connected to the mounting seat through the bearing, the middle part of the screw rod is connected to a worm gear through a spline, and a thread hole is provided at one end of the docking strip facing the screw rod, and the screw rod is meshed with the thread hole; The mounting seat is rotatably provided with a worm in a horizontal direction perpendicular to the butt joint strip, and the worm is meshed with a worm wheel.

2. The novel tensioner according to claim 1 is characterized in that: The mounting seat is provided with an adjusting bolt, which is fixedly connected to one end of the worm in the cavity, and the worm can be rotated synchronously by rotating the adjusting bolt.

3. The novel tensioner according to claim 1 is characterized in that: A track groove is arranged on the inner wall of the cavity, and the side wall of the docking strip is slidably arranged in the track groove.

4. The novel tensioner according to claim 1 is characterized in that: The tensioning wheel is hinged to the connecting arm in a rotatable manner.

5. The novel tensioner according to claim 1 is characterized in that: The length of the butt joint strip is smaller than the depth of the cavity.

6. The novel tensioner according to claim 1 is characterized in that: A sealing ring is arranged between the butt joint strip and the inner wall of the cavity.

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