Anti-loose belt pulley

Abstract

The utility model relates to the technical field of belt pulleys, in particular to an anti-loosening belt pulley which comprises two wheel discs which are symmetrically arranged at intervals, a middle shaft is arranged between the two wheel discs, one wheel disc is fixedly connected with a mounting plate, and one end, close to the middle shaft, of the mounting plate is vertically and slidably connected with an auxiliary wheel. A driving assembly used for driving the auxiliary wheels to ascend and descend is arranged at the end, away from the middle shaft, of the mounting plate. Through lifting adjustment of the auxiliary wheel, the tension of the belt can be effectively kept, the belt is prevented from loosening, and stable operation of a transmission system is ensured; the threaded rod is driven by the rotating motor, the adjusting precision is high, and the belt tightness can be flexibly adjusted according to needs; the belt pulley is simple in design structure and convenient to manufacture and install, production cost can be greatly reduced, abrasion caused by belt looseness is effectively reduced through reasonable structural design, and therefore the service life of the belt pulley and the service life of the belt are prolonged, and cost is controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pulley technical field, concretely relates to a prevent loosening pulley. BACKGROUND

[0002] Pulley, belong to hub class spare, general relative size is bigger, manufacturing process generally with casting, forging mainly, mainly used for long distance transmission power occasion, pulley is the core component in the belt drive system, is used for transmitting power from one axle to another axle. Through the cooperation of pulley and belt, the rotary motion can be transmitted from the driving source to the driven equipment. The pulley can transmit different power according to the design and ensure the efficient operation of the system.

[0003] Because the belt belongs to rubber products, has the characteristics of thermal expansion and cold contraction, in the case of high temperature in summer, the belt is easy to expand and loosen from the pulley when being in high temperature state for a long time, which affects the normal use of equipment and needs to be replaced, and the replacement cost is high. UTILITY MODEL CONTENT

[0004] In view of the above-mentioned shortcomings of the prior art, the utility model provides a prevent loosening pulley, which can effectively solve the problem that the belt is easy to expand and loosen from the pulley when being in high temperature state for a long time in the case of high temperature in summer.

[0005] To achieve the above object, the utility model realizes the following technical scheme:

[0006] The utility model provides a prevent loosening pulley, including two wheel discs that are symmetrically arranged at intervals, a middle shaft is arranged between the two wheel discs, one of the wheel discs is fixedly connected with a mounting plate, a auxiliary wheel is vertically and slidingly connected to one end of the mounting plate close to the middle shaft, and a driving assembly for driving the auxiliary wheel to ascend and descend is arranged at one end of the mounting plate away from the middle shaft.

[0007] The driving assembly includes a fixed plate fixedly connected to one end of the mounting plate away from the middle shaft, a rotary motor is fixedly installed at the upper end of the fixed plate, a threaded rod is fixedly connected to the output end of the rotary motor, a threaded sleeve is threadedly sleeved on the outer side of the threaded rod, and the threaded sleeve is connected with the auxiliary wheel.

[0008] According to the prevent loosening pulley, the auxiliary wheel includes a connecting shaft fixedly connected with the threaded sleeve, a fixed shaft is fixedly connected to the shaft body of the connecting shaft, and a rotating shaft is limitingly and rotatably connected to the fixed shaft.

[0009] According to the prevent loosening pulley, the shaft body of the fixed shaft is provided with a limiting groove, and the inner side of the rotating shaft is fixedly connected with a limiting block in limiting connection with the limiting groove.

[0010] According to the anti-loose pulley, the width of the limiting groove away from the one end of the connecting shaft is smaller than the width of the limiting groove close to the one end of the connecting shaft.

[0011] According to the anti-loose pulley, the movable groove is arranged on the mounting plate, and the connecting shaft is arranged through the movable groove, and the width of the movable groove is smaller than the width of the threaded sleeve.

[0012] According to the anti-loose pulley, the threaded sleeve is slidably connected with the mounting plate.

[0013] Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:

[0014] 1、The utility model discloses a lifting adjustment of auxiliary wheel can effectively keep the belt tension, prevent the belt slack, ensure the stable operation of transmission system.

[0015] 2、The utility model discloses a rotating motor drive screw rod, and the adjustment precision is high, and the belt tightness can be flexibly adjusted according to the need.

[0016] 3、The utility model discloses simple structure, convenient manufacture and installation can greatly reduce production cost, through reasonable structure design, effectively reduce the abrasion caused by the belt slack, thereby prolong the service life of the pulley and the belt, control cost. DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description. Obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0018] Figure 1 It is the structural schematic diagram of the first visual angle of the utility model;

[0019] Figure 2 It is the structural schematic diagram of the second visual angle of the utility model;

[0020] Figure 3 It is Figure 1 It is the structural schematic diagram of the section of auxiliary wheel.

[0021] Reference numerals: 1, wheel disc;2, middle shaft;3, mounting plate;4, auxiliary wheel;41, fixed shaft;42, limiting groove;43, rotating shaft;44, connecting shaft;5, fixed plate;6, rotating motor;7, threaded rod;8, threaded sleeve;9, movable groove. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are 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.

[0023] The utility model will be further described below in combination with the embodiments.

[0024] Embodiment: Refer to Figures 1 to 3 A kind of anti-loose pulley, including two wheel discs 1 of interval symmetry, middle shaft 2 is arranged between two wheel discs 1, one of wheel disc 1 is fixedly connected with mounting plate 3, one end of mounting plate 3 close to middle shaft 2 is vertically slidably connected with auxiliary wheel 4, auxiliary wheel 4 includes the connecting shaft 44 of fixed connection with threaded sleeve 8, the shaft body of connecting shaft 44 is fixedly connected with fixed shaft 41, fixed shaft 41 is limitingly rotatably connected with rotating shaft 43, rotating shaft 43 is in contact with transmission belt, for when transmission belt loosens, increase the tension of transmission belt, prevent transmission belt abnormally rotates.

[0025] The shaft body of fixed shaft 41 is provided with limiting slot 42, the inner side of rotating shaft 43 is fixedly connected with the limiting block that is limitingly connected with limiting slot 42, limiting slot 42 is arranged to limit the limiting block, auxiliary wheel 4 is composed of connecting shaft 44, fixed shaft 41 and rotating shaft 43, and fixed shaft 41 is connected with the inner side limiting block of rotating shaft 43 by the limiting slot 42 of shaft body, ensure that rotating shaft 43 smoothly rotates under the restriction of fixed shaft 41, limit rotating shaft 43 on fixed shaft 41, prevent rotating shaft 43 and fixed shaft 41 from relative horizontal displacement, the movement between the two is limited to rotation cooperation.

[0026] The width of one end of limiting slot 42 away from connecting shaft 44 is less than the width of one end of limiting slot 42 close to connecting shaft 44, the shape of limiting block is adapted to limiting slot 42, limiting slot 42 limits the limiting block, ensure that rotating shaft 43 smoothly rotates under the restriction of fixed shaft 41.

[0027] The end of the mounting plate 3 away from the central shaft 2 is provided with a driving assembly for driving the auxiliary wheel 4 to lift, specifically, the driving assembly comprises a fixed plate 5 fixedly connected to the end of the mounting plate 3 away from the central shaft 2, the upper end of the fixed plate 5 is fixedly installed with a rotary motor 6, the output end of the rotary motor 6 is fixedly connected with a threaded rod 7, the outer side of the threaded rod 7 is threadedly sleeved with a threaded sleeve 8, the threaded sleeve 8 is connected with the auxiliary wheel 4, the conveying belt is installed between the two central shafts 2 when in use, for driving the two central shafts 2 to rotate, when the conveying belt is loose after a long time of use, the rotary motor 6 drives the threaded rod 7, the threaded sleeve 8 is slidingly connected with the mounting plate 3, so that the auxiliary wheel 4 can slide vertically upward on the outer side of the threaded rod 7, drives the auxiliary wheel 4 to move upward and abut against the conveying belt, since the auxiliary wheel 4 is composed of the connecting shaft 44, the fixed shaft 41 and the rotating shaft 43, and the fixed shaft 41 is connected with the inner side limiting block of the rotating shaft 43 through the limiting groove 42 of the shaft body, so that the rotating shaft 43 can smoothly rotate under the limitation of the fixed shaft 41, therefore, the conveying belt abuts against the rotating shaft 43, and the two are rotatably connected, the friction between the two is reduced, and the tension of the conveying belt is increased, when the conveying belt expands and is loose from the belt pulley under a high temperature for a long time, the lifting adjustment of the auxiliary wheel 4 can effectively maintain the tension of the conveying belt, prevent the conveying belt from being loose, and ensure the stable operation of the transmission system.

[0028] The mounting plate 3 is provided with a movable groove 9, and the connecting shaft 44 passes through the movable groove 9, the width of the movable groove 9 is smaller than the width of the threaded sleeve 8, so as to ensure the stability of the vertical movement of the threaded sleeve 8.

[0029] The threaded sleeve 8 is slidingly connected with the mounting plate 3, so that when the rotary motor 6 drives the threaded rod 7 to rotate, the threaded sleeve 8 can vertically slide on the rod body of the threaded rod 7.

[0030] The working principle of the utility model is as follows:

[0031] When the conveying belt expands and is loose from the belt pulley under a high temperature for a long time, the rotary motor 6 drives the threaded rod 7, since the threaded sleeve 8 is slidingly connected with the mounting plate 3, so that the threaded sleeve 8 and the auxiliary wheel 4 can vertically slide upward on the outer side of the threaded rod 7, drive the auxiliary wheel 4 to move upward and abut against the conveying belt, the rotating shaft 43 smoothly rotates under the limitation of the fixed shaft 41, therefore, the conveying belt abuts against the rotating shaft 43, and the two are rotatably connected, the friction between the two is reduced, and the tension of the conveying belt is increased, the lifting adjustment of the auxiliary wheel 4 can effectively maintain the tension of the conveying belt, prevent the conveying belt from being loose, and ensure the stable operation of the transmission system.

[0032] The above examples are only used to illustrate the technical solutions of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features therein can be replaced equivalently; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A type of anti-loosening pulley, characterized in that, It includes two symmetrically spaced wheel discs (1), with a central shaft (2) between the two wheel discs (1). A mounting plate (3) is fixedly connected to one of the wheel discs (1). An auxiliary wheel (4) is vertically slidably connected to one end of the mounting plate (3) near the central shaft (2). A drive assembly for driving the auxiliary wheel (4) to rise and fall is provided at the other end of the mounting plate (3) away from the central shaft (2). The drive assembly includes a fixed plate (5) fixedly connected to one end of the mounting plate (3) away from the central axis (2), a rotary motor (6) fixedly installed on the upper end of the fixed plate (5), a threaded rod (7) fixedly connected to the output end of the rotary motor (6), a threaded sleeve (8) threadedly sleeved on the outer side of the threaded rod (7), and the threaded sleeve (8) connected to the auxiliary wheel (4).

2. The anti-loosening pulley according to claim 1, characterized in that, The auxiliary wheel (4) includes a connecting shaft (44) fixedly connected to the threaded sleeve (8). The shaft body of the connecting shaft (44) is fixedly connected to a fixed shaft (41), and the fixed shaft (41) is rotatably connected to a rotating shaft (43).

3. The anti-loosening pulley according to claim 2, characterized in that, The fixed shaft (41) has a limiting groove (42) on its shaft body, and the inner side of the rotating shaft (43) is fixedly connected with a limiting block that is limited and connected to the limiting groove (42).

4. The anti-loosening pulley according to claim 3, characterized in that, The width of the limiting groove (42) at the end away from the connecting shaft (44) is smaller than the width of the limiting groove (42) at the end close to the connecting shaft (44).

5. The anti-loosening pulley according to claim 1, characterized in that, The mounting plate (3) has a movable groove (9) and the connecting shaft (44) passes through the movable groove (9). The width of the movable groove (9) is smaller than the width of the threaded sleeve (8).

6. The anti-loosening pulley according to claim 5, characterized in that, The threaded sleeve (8) is in close sliding connection with the mounting plate (3).

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