Belt pulley shield and mobile crusher
By designing a semi-cylindrical pulley cover, the number of parts is reduced, and observation holes and drainage outlets are added, solving the problems of complex assembly, heavy weight, and difficult observation of existing crusher belt covers, thus achieving lightweight and efficient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZOOMLION MINING MACHINERY (CHANGSHA) CO LTD
- Filing Date
- 2025-04-17
- Publication Date
- 2026-04-14
AI Technical Summary
The existing crusher belt guard parts are complex to assemble, heavy, have low material utilization, few observation holes, and are not conducive to disassembly and maintenance.
Design a pulley guard, including an upper guard and a lower guard, with a semi-cylindrical structure to reduce the number of parts, increase observation holes and drainage outlets, and use an oval shell design with unequal radii, combined with a cover plate and bracket, to simplify assembly and observation.
The lightweight design of the protective cover simplifies the assembly process, improves the convenience of observation and maintenance, and enhances equipment safety and work efficiency.
Smart Images
Figure CN224114165U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mining machinery, and in particular to a pulley guard and a mobile crusher having the pulley guard. Background Technology
[0002] Mobile crushers are widely used in the mining industry, where the working environment is complex. To prevent stones, debris, and other objects from falling onto the high-speed rotating pulleys or belts during operation, pulley guards are needed to protect the crusher's pulleys and belts and to ensure the safety of operators.
[0003] Currently available crusher belt guards on the market consist of a welded housing, with the front and rear sides serving as the mounting and maintenance surfaces, respectively. Inside the housing are two protective zones for the pulleys, separated by a transition zone for the V-belt. The transition zone on the mounting surface is covered by a panel, while the maintenance surface is covered by a door panel connected with bolts. However, this existing technology has several drawbacks: First, the welded housing has numerous assembly parts, making assembly complex and hindering disassembly and maintenance; second, the square shape of the welded housing results in significant weight and low material utilization; and third, the limited number of observation and maintenance holes on the guard makes it difficult to monitor belt operation. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide a pulley guard and a mobile crusher, which can optimize the number of guard parts, facilitate the observation of operation and assembly and disassembly, and achieve a lightweight design.
[0005] One embodiment of this utility model provides a pulley guard for a mobile crusher. The pulley guard includes an upper guard body and a lower guard body. The upper guard body includes a flat upper main body plate and a first upper end plate and a second upper end plate respectively connected to both ends of the upper main body plate. Both the first and second upper end plates are curved plates, bent towards the same side of the upper main body plate, and the radius of the first upper end plate is larger than the radius of the second upper end plate. The lower guard body includes a flat lower main body plate and a first lower end plate and a second lower end plate respectively connected to both ends of the lower main body plate. Both the first and second lower end plates are curved plates, bent towards the same side of the lower main body plate, and the radius of the first lower end plate is larger than the radius of the second lower end plate. The ends of the first upper end plate and the first lower end plate are connected to each other, thereby forming a semi-cylindrical first guard end. The ends of the second upper end plate and the second lower end plate are connected to each other, thereby forming a semi-cylindrical second guard end.
[0006] Furthermore, the upper cover also includes a flat upper side plate, the edge of which is connected to the upper main body plate, the first upper end plate and the second upper end plate, and the upper side plate is disposed in a plane perpendicular to the upper main body plate, the first upper end plate and the second upper end plate; the lower cover also includes a flat lower side plate, the edge of which is connected to the lower main body plate, the first lower end plate and the second lower end plate, and the lower side plate is disposed in a plane perpendicular to the lower main body plate, the first lower end plate and the second lower end plate.
[0007] Furthermore, the upper side plate has a first upper notch and a second upper notch, and the lower side plate has a first lower notch and a second lower notch. The first upper notch and the first lower notch are joined together, and the second upper notch and the second lower notch are joined together to form a first axle hole and a second axle hole for the pulley shaft to pass through.
[0008] Furthermore, the upper cover also includes at least one lug connected to the outside of the upper side plate.
[0009] Furthermore, it also includes a first cover plate and a second cover plate, the edge of the first cover plate being connected to the upper main body plate, the lower main body plate and the end of the first protective cover, the edge of the second cover plate being connected to the upper main body plate, the lower main body plate and the end of the second protective cover, and a portion of the edge of the first cover plate being joined with a portion of the edge of the second cover plate.
[0010] Furthermore, both the first and second cover plates have multiple through observation holes.
[0011] Furthermore, both the first cover plate and the second cover plate are provided with at least one handle.
[0012] Furthermore, the lower main body plate has a through-hole drainage outlet.
[0013] Furthermore, it also includes a first bracket fixedly connected to the end of the first protective cover and a second bracket fixedly connected to the end of the second protective cover.
[0014] Another embodiment of the present invention provides a mobile crusher, including a pulley assembly and the aforementioned pulley cover. The pulley assembly includes at least two pulleys, at least two pulley shafts coaxially connected to the at least two pulleys respectively, and belts sleeved on the at least two pulleys. The at least two pulleys and belts are housed within the pulley cover, and the at least two pulley shafts extend out from the pulley cover.
[0015] This utility model provides a pulley guard for a mobile crusher, comprising an upper guard body, a lower guard body, a first cover plate, and a second cover plate. The upper guard body, lower guard body, first cover plate, and second cover plate are fixedly connected to form an oval shell with varying radii, optimizing the number of pulley guard parts, reducing assembly time, and thus improving the crusher's working efficiency. The lower main body plate of the lower guard body has a drainage port to remove dust and water from inside the guard, reducing the overall weight of the pulley guard. Both the first and second cover plates have multiple observation holes and handles, allowing for easy observation of the belt's operation inside the guard, facilitating disassembly and maintenance of the belt and guard, and further reducing the weight of the pulley guard. The pulley guard, used in mobile crushers, prevents belt slippage or damage caused by stones, debris, etc., falling onto the pulley or belt during equipment operation, and also improves equipment safety. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a perspective view of a pulley guard provided in a preferred embodiment of the present invention.
[0018] Figure 2 a is Figure 1 A schematic diagram of the upper cover of the pulley guard shown;
[0019] Figure 2 b is Figure 1 A schematic diagram of the lower cover of the pulley guard shown;
[0020] Figure 3 a is Figure 1 A schematic diagram of the first cover plate of the pulley guard shown;
[0021] Figure 3 b is Figure 1 A schematic diagram of the second cover plate of the pulley guard shown;
[0022] Figure 4 a is Figure 1 A schematic diagram of the first bracket of the pulley guard shown;
[0023] Figure 4 b is Figure 1 A schematic diagram of the second bracket of the pulley guard shown;
[0024] Figure 5 For having Figure 1 A partial schematic diagram of a mobile crusher with a pulley guard is shown.
[0025] In the figure: Upper cover 11; Upper main body plate 111; First upper end plate 112; Second upper end plate 113; Upper side plate 114; First upper notch 1141; Second upper notch 1142; Lifting lug 115; Lower cover 12; Lower main body plate 121; Drain outlet 1211; First lower end plate 122; Second lower end plate 123; Lower side plate 124; First lower notch 1241; Second lower notch 1242; Support flange 13; First cover plate 21; Second cover plate 22; Observation hole 23; Handle 24; First bracket 31; First bracket body 310; First upper bracket plate 311; First lower bracket plate 312; Second bracket 32; Second bracket body 320; Second upper bracket plate 321; Second lower bracket plate 322; Belt 41; Pulley 42. Detailed Implementation
[0026] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.
[0027] like Figures 1 to 5 As shown, one embodiment of this application provides a pulley guard for a mobile crusher. The pulley guard includes an upper cover 11 and a lower cover 12. The upper cover 11 includes a flat upper main body plate 111 and a first upper end plate 112 and a second upper end plate 113 respectively connected to both ends of the upper main body plate 111. Both the first upper end plate 112 and the second upper end plate 113 are curved plates, bent towards the same side of the upper main body plate 111, and the radius of the first upper end plate 112 is larger than the radius of the second upper end plate 113. The upper cover 11 also includes at least one lifting lug 115 connected to the outside of the upper side plate 114, which facilitates lifting during assembly.
[0028] The lower cover 12 includes a flat lower main body plate 121 and a first lower end plate 122 and a second lower end plate 123 respectively connected to both ends of the lower main body plate 121. Both the first lower end plate 122 and the second lower end plate 123 are curved plates, bent towards the same side of the lower main body plate 121, and the radius of the first lower end plate 122 is larger than the radius of the second lower end plate 123. The ends of the first upper end plate 112 and the first lower end plate 113 are connected to each other, thus forming a semi-cylindrical first end of the cover; the ends of the second upper end plate 122 and the second lower end plate 123 are connected to each other, thus forming a semi-cylindrical second end of the cover. In addition, the main body plate 121 of the lower cover 12 has a through-hole drainage port 1211, which can drain rainwater and dust from inside the cover and reduce the overall weight of the cover.
[0029] like Figure 2 The upper cover 11 further includes a flat upper side plate 114, the edge of which is connected to the upper main body plate 111, the first upper end plate 112, and the second upper end plate 113, and the upper side plate 114 is disposed in a plane perpendicular to the upper main body plate 111, the first upper end plate 112, and the second upper end plate 113. The lower cover 12 further includes a flat lower side plate 124, the edge of which is connected to the lower main body plate 121, the first lower end plate 122, and the second lower end plate 123, and the lower side plate 124 is disposed in a plane perpendicular to the lower main body plate 121, the first lower end plate 122, and the second lower end plate 123. The upper side plate 114 has a first upper notch 1141 and a second upper notch 1142, and the lower side plate 124 has a first lower notch 1241 and a second lower notch 1242. The first upper notch 1141 and the first lower notch 1241 are joined together, and the second upper notch 1142 and the second lower notch 1242 are joined together, respectively forming a first wheel shaft hole and a second wheel shaft hole for the pulley shaft (not shown) of the pulley 42 to pass through.
[0030] The upper cover 11 has outwardly extending support flanges 13 at the ends of the first upper end plate 112 and the second upper end plate 113 of the upper cover 11, and the first lower end plate 122 and the second lower end plate 123 of the lower cover 12. The support flanges 13 also have multiple connecting holes. After the upper cover 11 and the lower cover 12 are combined, the support flanges 13 of the first upper end plate 112 and the first lower end plate 122, and the support flanges 13 of the second upper end plate 113 and the second lower end plate 123 can be stacked together respectively. The support flanges 13 of the upper cover 11 and the support flanges 13 of the lower cover 12 can be detachably connected by connecting parts such as bolts passing through the connecting holes. This allows the upper and lower covers to be combined to form an waist-shaped shell with unequal radii at both ends. Only two cover pieces are needed to form most of the main structure of the pulley guard, which can reduce the overall weight and achieve lightweight design.
[0031] like Figure 3As shown, the pulley guard also includes a first cover plate 21 and a second cover plate 22. The edge of the first cover plate 21 is connected to the upper main body plate 111, the lower main body plate 121, and the end of the first guard. The edge of the second cover plate 22 is connected to the upper main body plate 111, the lower main body plate 122, and the end of the second guard. Parts of the edges of the first cover plate 21 and the second cover plate 22 are joined together. After the upper cover 11 and the lower cover 12 are fixedly connected to the first cover plate 21 and the second cover plate 22, a guard body is formed that is closed on one side and has a first wheel shaft hole and a second wheel shaft hole on the other side. Compared with existing technologies, this reduces the number of parts in the pulley guard, shortens the assembly time, and improves work efficiency. Both the first cover plate 21 and the second cover plate 22 have multiple through observation holes 23. Through these observation holes 23, the operator can observe the operation of the belt 41 and the pulley 42 of the pulley guard. At least one handle 24 is provided on both the first cover plate 21 and the second cover plate 22. The handle 24 is located on the side of the first cover plate 21 and the second cover plate 22 away from the upper side plate 114 and the lower side plate 124, and is located at both ends of the first cover plate 21 and the second cover plate 22, so as to facilitate the disassembly and maintenance of the pulley 42 and the belt 41.
[0032] like Figure 4 As shown, the pulley guard also includes a first bracket 31 and a second bracket 32. The first bracket 31 includes a vertically erected first bracket body 310 and a first upper bracket plate 311 and a first lower bracket plate 312 horizontally disposed at the upper and lower ends of the first bracket body 310. The second bracket 32 includes a vertically erected second bracket body 320 and a second upper bracket plate 321 and a second lower bracket plate 322 horizontally disposed at the upper and lower ends of the second bracket body 320. The first end of the guard body is mounted on the first upper bracket plate 311 of the first bracket 31 via a supporting flange 13. The lower main body plate 121 and / or the second lower end plate 123 of the lower cover 12 are mounted on the second upper bracket plate 321 of the second bracket.
[0033] Preferably, in this embodiment, the first upper support plate 311, the first lower support plate 312, the second upper support plate 321, and the second lower support plate 322 can all have multiple connecting holes. After the first upper end plate 112 is stacked on the first lower end plate 122, existing connectors such as bolts can be used to sequentially pass through the support flange 13 at the end of the first cover and the connecting holes of the first upper support plate 311 to fix the cover body to the first support 31. For the second upper support plate 321, it can be connected to the lower body plate 121 and / or the second lower end plate 123 at the end of the second cover using bolts or other connectors to fix the pulley cover to the first support 31 and the second support 32. In this embodiment, the first lower support plate 312 and the second lower support plate 322 are both connected to the frame of the mobile crusher, thereby fixing the pulley cover to the mobile crusher. In some other embodiments, the first lower support plate 312 and the second lower support plate 322 can also be placed directly on the ground or in other suitable installation positions.
[0034] In summary, the above-described embodiments of this utility model provide a pulley cover for a mobile crusher, comprising an upper cover 11, a lower cover 12, a first cover plate 21, and a second cover plate 22. The upper cover 11, lower cover 12, first cover plate 21, and second cover plate 22 are fixedly connected to form an oval shell with varying radii. This design is simple in appearance, optimizes the number of pulley cover parts, reduces assembly time, and thus improves the crusher's working efficiency. The lower main body plate 121 of the lower cover 12 has a drainage port 1211, which can drain dust and accumulated water from inside the cover, reducing the overall weight of the pulley cover. Both the first cover plate 21 and the second cover plate 22 have multiple observation holes 23 and multiple handles 24. The observation holes 23 allow for easy observation of the operation of the belt 41 inside the cover, while the handles 24 facilitate the disassembly and maintenance of the belt and cover, further contributing to the lightweight design of the pulley cover.
[0035] like Figure 5 As shown, another embodiment of the present invention provides a mobile crusher, including a pulley assembly and the aforementioned pulley cover. The pulley assembly includes at least two pulleys 42, at least two pulley shafts (not shown) coaxially connected to the at least two pulleys 42, and belts 41 sleeved on the at least two pulleys 42. The at least two pulleys 42 and belts 41 are housed within the pulley cover, and the at least two pulley shafts extend through the pulley cover. The pulley shafts drive the pulleys 42 and belts 41 within the pulley cover to rotate through the first and second axle holes of the pulley cover. Additionally, the mobile crusher also includes a frame (not shown), and the first lower support plate 312 and the second lower support plate 322 of the pulley cover are fixedly connected to the frame of the mobile crusher for supporting and fixing the pulley cover.
[0036] The assembly sequence of the pulley guard on the mobile crusher is as follows: First, the upper cover 11 and the lower cover 12 are fixedly connected, and the first bracket 31 and the second bracket 32 are fixed on the frame of the mobile crusher and detachably connected to the upper cover 11 and the lower cover 12; second, the pulley shaft, pulley 42, and belt 41 of the mobile crusher are installed in sequence; finally, the first cover plate 21 and the second cover plate 22 are installed so that the pulley 42 and the belt 41 are accommodated inside the pulley guard. At this time, the pulley 42 can be rotated by an existing power device (not shown) such as a motor through the pulley shaft. When the pulley 42 rotates, the pulley guard can protect the pulley 42 and the belt 41 from damage by collision with debris.
[0037] In summary, another embodiment of this utility model provides a mobile crusher, including a pulley assembly and the aforementioned pulley cover. The pulley assembly includes a pulley 42, a pulley shaft, and a belt 41. The pulley 42 and belt 41 are housed within the pulley cover, and the pulley shaft drives the pulley 42 and belt 41 to rotate through the first and second shaft holes of the pulley cover. By protecting the pulley 42 and belt 41 of the mobile crusher with the pulley cover, it is possible to prevent the belt 41 from falling off or being damaged due to stones, debris, etc., falling onto the high-speed rotating pulley 42 or belt 41 during equipment operation; it also protects the safety of operators during operation and improves equipment safety.
[0038] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A pulley shroud for a mobile crusher, characterized in that The pulley guard includes an upper cover and a lower cover. The upper cover includes a flat upper main body plate and a first upper end plate and a second upper end plate respectively connected to both ends of the upper main body plate. Both the first upper end plate and the second upper end plate are curved plates, bent towards the same side of the upper main body plate, and the radius of the first upper end plate is larger than the radius of the second upper end plate. The lower cover includes a flat lower main body plate and a first lower end plate and a second lower end plate respectively connected to both ends of the lower main body plate. Both the first lower end plate and the second lower end plate are curved plates, bent towards the same side of the lower main body plate, and the radius of the first lower end plate is larger than the radius of the second lower end plate. The ends of the first upper end plate and the first lower end plate are connected to each other, thereby forming a semi-cylindrical first protective cover end; the ends of the second upper end plate and the second lower end plate are connected to each other, thereby forming a semi-cylindrical second protective cover end.
2. The pulley shroud of claim 1, wherein, The upper cover also includes a flat upper side plate, the edge of which is connected to the upper main body plate, the first upper end plate, and the second upper end plate, and the upper side plate is disposed in a plane perpendicular to the upper main body plate, the first upper end plate, and the second upper end plate; the lower cover also includes a flat lower side plate, the edge of which is connected to the lower main body plate, the first lower end plate, and the second lower end plate, and the lower side plate is disposed in a plane perpendicular to the lower main body plate, the first lower end plate, and the second lower end plate.
3. The pulley guard as described in claim 2, characterized in that, The upper side plate has a first upper notch and a second upper notch, and the lower side plate has a first lower notch and a second lower notch. The first upper notch and the first lower notch are joined together, and the second upper notch and the second lower notch are joined together to form a first axle hole and a second axle hole for the pulley shaft to pass through.
4. The pulley guard as described in claim 2, characterized in that, The upper cover also includes at least one lug connected to the outside of the upper side plate.
5. The pulley guard as described in claim 1, characterized in that, It also includes a first cover plate and a second cover plate. The edge of the first cover plate is connected to the upper main body plate, the lower main body plate and the end of the first protective cover. The edge of the second cover plate is connected to the upper main body plate, the lower main body plate and the end of the second protective cover. A portion of the edge of the first cover plate is joined with a portion of the edge of the second cover plate.
6. The pulley guard as described in claim 5, characterized in that, Both the first cover plate and the second cover plate have multiple through observation holes.
7. The pulley guard as described in claim 5, characterized in that, Both the first cover plate and the second cover plate are provided with at least one handle.
8. The pulley guard as described in claim 1, characterized in that, The lower main body plate has a through-hole drainage outlet.
9. The pulley guard as described in claim 1, characterized in that, It also includes a first bracket fixedly connected to the end of the first protective cover and a second bracket fixedly connected to the end of the second protective cover.
10. A mobile crusher, characterized in that, The device includes a pulley assembly and a pulley cover as described in any one of claims 1-9. The pulley assembly includes at least two pulleys, at least two pulley shafts coaxially connected to the at least two pulleys, and a belt sleeved on the at least two pulleys. The at least two pulleys and the belt are housed within the pulley cover, and the at least two pulley shafts extend through the pulley cover.