Protective device for belt pulley

Abstract

The utility model provides a protective device for belt pulleys, which comprises a protective cover mounted on the outer side of the belt pulleys, a plurality of side radiating holes are arranged on two sides of the protective cover corresponding to the two belt pulleys, and tangential radiating holes are respectively arranged at the top end of the protective cover corresponding to the two belt pulleys. The split mounting type protective cover is arranged, mounting and dismounting are convenient, the side face heat dissipation holes are formed in the positions, corresponding to the two belt wheels, of the two sides of the protective cover, axial heat dissipation of the belt wheels is achieved, and the tangential heat dissipation holes are formed in the top end of the protective cover and used for tangential heat dissipation of the belt wheels; heat generated by friction between the belt pulley and the belt can flow in the tangential direction along with rotation of the belt pulley, so that in the technical scheme, the tangential heat dissipation holes are formed in the coaming in the contour direction of the coaming, heat can be further dissipated, and efficient heat dissipation is carried out while the protection effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of protective devices for pulleys, in particular to a protective device for pulleys. Background Art

[0002] As an important component of mechanical transmission, pulleys are widely used in various power transmission occasions, such as diesel engines, tractors, automobiles, mining machinery, textile machinery, etc. However, in practical applications, since pulleys need to be frequently inspected and replaced, many pulleys are often exposed without effective protection measures. This exposed state poses serious safety hazards.

[0003] In order to avoid the above-mentioned safety hazards, a protective cover is generally added to the outside of the pulley. However, during the operation of the pulley, the high-speed friction between the belt and the pulley will generate a lot of heat. If there are no proper heat dissipation measures, this heat will accumulate on the transmission component, causing the pulley to overheat, and even cause belt burns, breakage and other faults. The pulley protective cover design currently on the market cannot meet the needs of protection and effective heat dissipation at the same time. Although some protective covers can effectively prevent people from contacting the pulley, due to their unreasonable structure, the ventilation and heat dissipation effect of the transmission component is poor, which aggravates the problem of pulley overheating. Although other protective covers take heat dissipation issues into consideration, the design is too complicated, which not only increases the manufacturing cost, but also affects the overall aesthetics and ease of use of the equipment. Utility Model Content

[0004] The utility model aims to provide a protective device for a pulley, which can achieve efficient heat dissipation while playing a protective role.

[0005] The utility model provides a protective device for a pulley, comprising a protective cover installed on the outside of the pulley, a plurality of side heat dissipation holes are opened at positions corresponding to two pulleys on both sides of the protective cover, and tangential heat dissipation holes are respectively provided at the top of the protective cover corresponding to the two pulleys.

[0006] Furthermore, a sound-absorbing layer is bonded inside the protective cover.

[0007] Furthermore, the protective cover includes an inner end plate, a surrounding plate and an outer end plate, the surrounding plate is detachably fixedly installed between the inner end plate and the outer end plate, and the inner end plate, the surrounding plate and the outer end plate are fixedly connected by screws.

[0008] Furthermore, an arrow indicating the belt transmission direction is provided on the enclosure at the top of the protective cover.

[0009] Furthermore, a warning sign is attached to the outer end plate on the outer side surface of the protective cover.

[0010] Furthermore, the warning sign is a magnetic pad.

[0011] Furthermore, a breathable mesh is hingedly connected to the two pulleys on the outer end plate, a clamping piece is provided on the outer side of the outer end plate, a clamping plate cooperating with the clamping piece is provided on the breathable mesh, and a plurality of side heat dissipation holes are opened on the breathable mesh.

[0012] Furthermore, a shock-absorbing pad is bonded to the edge of the air-permeable mesh plate on the side in contact with the outer end plate.

[0013] Furthermore, a brush rod is rotatably mounted on the inner side of the outer end plate corresponding to the two pulleys, and bristles are arranged on the brush rod.

[0014] Furthermore, the sound-absorbing layer is a damping sheet or porous fiber cotton, and the sound-absorbing layer is adhered to the inner wall of the protective cover by adhesive.

[0015] The beneficial effect of the technical solution of the utility model compared with the prior art is that the protective cover in the technical solution not only has side heat dissipation holes on both sides thereof corresponding to the two pulleys to realize axial heat dissipation of the pulley, but also tangential heat dissipation holes are arranged on the top of the protective cover for tangential heat dissipation of the pulley. When the pulley is transmitting, the heat generated by the friction between the pulley and the belt will flow tangentially with the rotation of the pulley. Therefore, in the technical solution, tangential heat dissipation holes are arranged on the enclosure along its contour direction, which can further dissipate the heat, thereby realizing the protective effect and performing efficient heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the utility model.

[0018] Figure 2 This is another overall structural schematic diagram of Example 1 of the utility model.

[0019] Figure 3 This is a schematic diagram of the structure in Example 3 of the utility model.

[0020] Explanation of the reference numerals: 1 - outer end plate; 2 - inner end plate; 3 - enclosure plate; 4 - side heat dissipation holes; 5 - tangential heat dissipation holes; 6 - indication arrows; 7 - breathable mesh plate; 8 - brush rod; 9 - clip-on component; 10 - rotating shaft. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] Example 1

[0025] like Figure 1-Figure 2As shown, the utility model provides a protective device for a pulley, including a protective cover installed on the outside of the pulley, the protective cover can be made into an integrally welded or detachable assembled structure, in this embodiment, in order to facilitate the disassembly and installation of the protective cover, the protective cover is designed as an assembled structure, specifically: the protective cover includes an inner end plate 2, a surrounding plate 3 and an outer end plate 1, the surrounding plate 3 is detachably fixed and installed between the inner end plate 2 and the outer end plate 1 by screws, connecting ear plates are arranged at intervals on both sides of the surrounding plate 3, and the connecting ear plates are arranged at intervals so that the connecting ear plates do not interfere with each other when the surrounding plate 3 is bent, waist-shaped holes corresponding to the connecting ear plates are provided on the edges of the inner end plate 2 and the outer end plate 1, and the connecting ear plates on both sides of the surrounding plate 3 are connected to the waist-shaped holes on the inner end plate 2 and the outer end plate 1 by screws.

[0026] A plurality of side heat dissipation holes 4 are provided on the inner end plate 2 and the outer end plate 1 at positions corresponding to the two pulleys. In the present embodiment, the side heat dissipation holes 4 are provided on the inner end plate 2 and the outer end plate 1, and tangential heat dissipation holes 5 are provided on the enclosure 3 at positions corresponding to the two pulleys. The extension direction of the tangential heat dissipation holes 5 is tangential to the large pulley or the small pulley, so that the heat generated by the friction between the pulley and the belt flowing along the tangential direction can be quickly dissipated through the tangential heat dissipation holes 5.

[0027] The inside of the protective cover is bonded with a sound-absorbing layer, which is a damping sheet or porous fiber cotton. The sound-absorbing layer is adhered to the inner wall of the protective cover through adhesive. When the sound-absorbing layer is set as a damping sheet, it can reduce the resonance effect of the protective cover caused by the pulley transmission, and play a role in reducing noise. When the sound-absorbing layer is set as porous fiber cotton, the porous structure absorbs the noise, thereby playing a role in silencing.

[0028] An indicator arrow 6 for indicating the direction of belt transmission is provided on the enclosure 3 at the top of the protective cover. The indicator arrow 6 is a turning mark for indicating the direction of belt transmission. A warning sign is pasted on the outer end plate 1 on the outer side of the protective cover. The indicator arrow 6 and the warning sign can be set on the enclosure 3 and the outer end plate 1 of the protective cover by printing.

[0029] A brush rod 8 is rotatably mounted on the inner side of the outer end plate 1 corresponding to the two pulleys. The brush rod 8 is provided with bristles. By rotating the brush rod 8 on the outer side of the outer end plate 1, the dust on the inner side of the outer end plate 1 can be cleaned.

[0030] Example 2

[0031] Compared with Example 1, the technical feature of this embodiment is that the warning sign is a magnetic pad, and the outer end plate 1 needs to be made of an iron plate or an iron sheet is fixed on the outer end plate 1.

[0032] Example 3

[0033] like Figure 3As shown, the technical feature of this embodiment compared with embodiment 1 or embodiment 2 is that air-permeable mesh panels 7 are hinged at the two corresponding pulleys on the outer end plate 1, and the hinge method here is: a rotating shaft 10 is rotatably mounted on the outer end plate 1, and a hinge hole perpendicular to its axis is opened on the rotating shaft 10, and the air-permeable mesh panel 7 is hingedly mounted on the outer end plate 1 through the hinge hole; a clamping piece 9 is provided on the outer side of the outer end plate 1, and a clamping plate cooperating with the clamping piece 9 is provided on the air-permeable mesh panel 7, and a plurality of side heat dissipation holes 4 are opened on the air-permeable mesh panel 7. By setting the hinged air-permeable mesh panel 7, it is convenient to clean and collect dust on the inner wall of the air-permeable mesh panel 7. When in use, the clamping plate is lifted to separate it from the clamping piece 9, so that the air-permeable mesh panel 7 can be opened.

[0034] A shock-absorbing pad is bonded to the edge of the air-permeable mesh plate 7 on the side in contact with the outer end plate 1 , and the shock-absorbing pad is provided to avoid the contact vibration between the metal air-permeable mesh plate 7 and the outer end plate 1 to generate noise.

[0035] In this embodiment, the brush rod 8 is rotatably mounted at the center of the air permeable mesh plate 7. When cleaning dust, the air permeable mesh plate 7 can be opened, and then the brush rod 8 is rotated to make the dust fall on the outside of the protective cover, which is convenient for cleaning. At the same time, the air permeable mesh plate 7 can be used as an inspection port when it is opened.

[0036] Example 4

[0037] The technical features that distinguish this embodiment from the above embodiments are that the tangential air holes are long strip-shaped structures, and a dustproof net is installed at each tangential air hole.

[0038] The technical solution is to set up an assembled protective cover, in which not only are side heat dissipation holes 4 provided at positions corresponding to the two pulleys on the inner end plate 2 and the outer end plate 1, thereby realizing axial heat dissipation of the pulleys, but also the heat generated by the friction between the pulleys and the belts flowing tangentially during transmission can be quickly dissipated through the tangential heat dissipation holes 5. Therefore, in the technical solution, tangential heat dissipation holes 5 are provided at corresponding positions of the two pulleys on the enclosure 3, which can further dissipate the heat, thereby realizing a protective effect and performing efficient heat dissipation.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A protective device for a pulley, characterized in that: It comprises a protective cover installed on the outside of the pulley, wherein a plurality of side heat dissipation holes are provided at positions corresponding to the two pulleys on both sides of the protective cover, and tangential heat dissipation holes are provided at the top of the protective cover corresponding to the two pulleys.

2. The protective device for a pulley according to claim 1, characterized in that: A sound-absorbing layer is bonded inside the protective cover.

3. The protective device for a pulley according to claim 1, characterized in that: The protective cover comprises an inner end plate, a surrounding plate and an outer end plate. The surrounding plate is detachably fixedly installed between the inner end plate and the outer end plate. The inner end plate, the surrounding plate and the outer end plate are fixedly connected by screws.

4. The protection device for a pulley according to claim 3, characterized in that: An arrow indicating the belt transmission direction is arranged on the enclosure plate at the top of the protective cover.

5. The protection device for a pulley according to claim 3, characterized in that: A warning sign is attached to the outer end plate on the outer side of the protective cover.

6. The protection device for a pulley according to claim 5, characterized in that: The warning sign is a magnetic pad.

7. The protection device for a pulley according to claim 3, characterized in that: Breathable mesh panels are hingedly connected at the two corresponding pulleys on the outer end plate, a clamping piece is provided on the outer side of the outer end plate, a clamping plate matched with the clamping piece is provided on the breathable mesh panel, and a plurality of side heat dissipation holes are opened on the breathable mesh panel.

8. The protection device for a pulley according to claim 7, characterized in that: A shock-absorbing pad is bonded to the edge of the air-permeable mesh plate on the side in contact with the outer end plate.

9. The protective device for a pulley according to claim 3 or 7, characterized in that: A brush rod is rotatably mounted on the inner side of the outer end plate corresponding to the two pulleys, and bristles are arranged on the brush rod.

10. The protection device for a pulley according to claim 2, characterized in that: The sound-absorbing layer is a damping sheet or porous fiber cotton, and the sound-absorbing layer is adhered to the inner wall of the protective cover by means of adhesive.

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