A quick-installable pulley protection device

Abstract

This utility model discloses a quick-installable pulley protection device, belonging to the field of mechanical equipment protection technology. The device includes a first outer shell and a second outer shell. The first outer shell has a grooved pin, and the second outer shell has a quick-installation mechanism. This mechanism includes a pressing block, a wedge block, a spring, a connecting rod, and a locking plate. The lower surface of the pressing block slides against the inclined surface of the wedge block. Pressing the pressing block causes the wedge block to move horizontally, and the connecting rod unlocks the locking plate. After releasing the pressure, the spring returns to its original position, pushing the wedge block so that the locking plate engages with the groove of the pin, completing the locking. The inner wall of the device is also lined with sound-insulating cotton, and the outer shell has ventilation holes covered with dustproof mesh. This utility model solves the problem of cumbersome and time-consuming installation and disassembly in existing technologies, achieving tool-free rapid assembly, greatly improving maintenance efficiency, and integrating noise reduction, dust prevention, and heat dissipation for excellent overall protection.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment protection technology, and in particular to a pulley protection device that can be quickly installed. Background Technology

[0002] As a fundamental and important mechanical transmission component, pulleys are widely used in various types of mechanical equipment. Because pulleys rotate at high speeds during operation, protective devices are usually installed on the outside of the pulleys to ensure the personal safety of operators, prevent clothing, limbs, etc. from being accidentally caught, and avoid external debris from affecting the normal operation of the transmission system.

[0003] Most existing pulley protection devices are metal or plastic housings. During installation, they are typically fixed to the equipment frame using bolts, nuts, and other traditional threaded fasteners through pre-drilled mounting holes in the housing. While this method provides a reliable connection, it has revealed significant shortcomings in practical applications.

[0004] When equipment requires routine maintenance, belt tension adjustment, or replacement, maintenance personnel must use specialized tools such as wrenches to loosen and remove numerous bolts one by one before they can open the protective cover. After maintenance, the same tedious steps must be repeated to reinstall and tighten everything. This process not only consumes a significant amount of time and effort, but in some confined spaces and inconvenient operating positions, the difficulty of installation and disassembly is multiplied, greatly reducing the efficiency of maintenance work.

[0005] Therefore, the bolt-fastening installation method commonly used in existing technologies makes the installation and disassembly process of pulley protection devices complex and inefficient, and cannot meet the requirements of high-efficiency and fast-response maintenance in modern production.

[0006] Therefore, this utility model proposes a pulley protection device that can be quickly installed to overcome the shortcomings of the prior art. Utility Model Content

[0007] To overcome the above shortcomings, this utility model provides a pulley protection device that can be installed quickly, aiming to improve the problems of cumbersome installation and disassembly processes, time-consuming and labor-intensive processes, and the need for tools in existing pulley protection devices. This utility model aims to provide a pulley protection device with an improved structure that can effectively solve the above problems and can be installed quickly.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a pulley protection device that can be quickly installed, comprising: a first housing, a second housing, a fixing block, a pin; and a quick-installation mechanism.

[0009] The fixing block is fixedly connected to the first outer shell, the pin is fixedly connected to the fixing block, and a groove is formed on the outer peripheral surface of the pin.

[0010] The quick-release mechanism is fixedly connected to the second housing. The quick-release mechanism includes a protective shell, a pressing block, a wedge block, a spring, a connecting rod, and a locking plate. The pressing block is slidably disposed within the protective shell in a vertical direction, and the wedge block is slidably disposed within the protective shell in a horizontal direction. The lower surface of the pressing block slides against the upper surface of the wedge block, and the upper surface of the wedge block is an inclined plane. The spring is disposed inside the wedge block. The pressing block, the wedge block, the spring, the connecting rod, and the locking plate are combined in the following manner: one end of the connecting rod is rotatably connected to the wedge block, and the other end of the connecting rod is rotatably connected to the locking plate. The locking plate is configured to be driven by the connecting rod to move between a locked position where it can engage with the groove of the pin and an unlocked position where it is disengaged from the groove when the wedge block moves in the horizontal direction.

[0011] Preferably, the quick-release mechanism includes connecting rods and locking plates symmetrically arranged with the central axis of the pressing block as the axis of symmetry, and the connecting rods are rotatably connected to both sides of the wedge block.

[0012] Preferably, the two ends of the spring abut against the inner wall of the wedge block and the inner wall of the protective shell, respectively.

[0013] Preferably, the quick-installable pulley protection device further includes an auxiliary mechanism disposed within the first housing and the second housing.

[0014] Preferably, as a specific implementation, the auxiliary mechanism includes a first sound-insulating cotton and a second sound-insulating cotton, the first sound-insulating cotton being attached to the inner wall of the first outer shell, and the second sound-insulating cotton being attached to the inner wall of the second outer shell.

[0015] Preferably, the second outer casing has heat dissipation holes.

[0016] Preferably, as a further embodiment, the auxiliary mechanism further includes a dustproof net, which is disposed between the second outer shell and the second sound insulation cotton and covers the inside of the heat dissipation holes.

[0017] This utility model has the following beneficial effects:

[0018] 1. In this utility model, by setting up a quick-installation mechanism consisting of a pressing block, a wedge block, a spring, a connecting rod and a locking plate, and converting the pressing action into the locking plate engaging and disengaging the groove on the pin, the problem of the pulley protection device in the prior art relying on fasteners such as bolts for installation, which is cumbersome, time-consuming and requires tools, is solved. The technical effect of tool-free operation and greatly improving assembly and maintenance efficiency is achieved.

[0019] 2. This utility model solves the problem that traditional protective covers have a single function and cannot meet multiple needs such as noise reduction, dust prevention and heat dissipation by setting sound insulation cotton on the inner wall of the protective device and opening heat dissipation holes on the outer shell and covering the inner side with a dustproof net. It achieves the comprehensive technical effect of providing physical safety protection while effectively reducing operating noise, preventing dust from entering and ensuring timely dissipation of internal heat, thereby optimizing the working environment and extending the service life of the equipment. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a pulley protection device that can be quickly installed according to the present invention.

[0021] Figure 2 This is a schematic diagram of the pressing block part of a pulley protection device that can be quickly installed according to this utility model;

[0022] Figure 3 This is a schematic diagram of the protective shell structure of a pulley protection device that can be quickly installed according to this utility model;

[0023] Figure 4 This is a schematic diagram of the dustproof mesh portion of a pulley protection device that can be quickly installed according to this utility model.

[0024] Legend:

[0025] 1. First outer shell; 2. Second outer shell; 3. Quick-release mechanism; 301. Fixing block; 302. Pin; 303. Groove; 304. Protective shell; 305. Pressing block; 306. Wedge block; 307. Spring; 308. Connecting rod; 309. Clamping plate; 4. Auxiliary mechanism; 401. First sound insulation cotton; 402. Second sound insulation cotton; 403. Dustproof net; 404. Heat dissipation hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please refer to Figures 1 to 4 This utility model provides a pulley protection device that can be installed quickly, aiming to solve the problems of complex installation structure, cumbersome operation, and time-consuming and labor-intensive operation of existing pulley protection devices.

[0028] like Figures 1 to 3 As shown, the quick-installable pulley protection device includes a first housing 1 and a second housing 2. The second housing 2 can be fastened to the first housing 1 to form a receiving space for covering the pulley. To achieve quick locking of the two housings, a fixing block 301 is fixedly connected to the first housing 1. A pin 302, serving as a locking male, is further fixedly connected to the fixing block 301. A groove 303 for engaging is provided on the outer circumferential surface of the pin 302. Cooperating with the pin 302 is a quick-installation mechanism 3 fixedly connected to the second housing 2. The quick-installation mechanism 3 is the core of achieving quick installation of this solution. The quick-installation mechanism 3 has a protective shell 304 inside, which serves as a mounting base. A pressing block 305 is slidably arranged vertically inside the protective shell 304. A wedge block 306 is slidably arranged horizontally below the pressing block 305. The lower surface of the pressing block 305 and the upper surface of the wedge block 306 form a sliding contact, and the upper surface of the wedge block 306 is an inclined surface. The inclined structure is used to efficiently convert the vertical movement of the pressing block 305 into the horizontal movement of the wedge block 306. A spring 307 is provided on the inner side of the wedge block 306 to provide reset force. The two ends of the spring 307 abut against the inner wall of the wedge block 306 and the inner wall of the protective shell 304, respectively. The outer side of the wedge block 306 is rotatably connected via one end of a connecting rod 308, and the other end of the connecting rod 308 is rotatably connected to a locking mechanism. The locking plate 309 of the female head, through this series of precisely arranged linkage structures, when the pressing block 305 is pressed down, the wedge block 306 is pressed outward and pulls the locking plate 309 open to make room. When the pressing block 305 is released, the spring 307 resets and pushes the wedge block 306 inward, thereby driving the locking plate 309 to close inward, so that the locking plate 309 can be locked into the groove 303 of the pin 302, thereby completing the tool-free quick locking between the first outer shell 1 and the second outer shell 2.

[0029] The auxiliary mechanism 4 includes a first sound-insulating cotton 401 disposed on the inner wall of the first outer shell 1 and a second sound-insulating cotton 402 disposed on the inner wall of the second outer shell 2. The first sound-insulating cotton 401 is attached and fixed to the inner wall of the first outer shell 1, and the second sound-insulating cotton 402 is attached and fixed to the inner wall of the second outer shell 2. The first sound-insulating cotton 401 and the second sound-insulating cotton 402 can form a sound-absorbing layer surrounding the pulley after the device is closed. At the same time, in order to balance heat dissipation and dust prevention, multiple heat dissipation holes 404 are provided on the second outer shell 2. The auxiliary mechanism 4 also includes a dustproof net 403, which is disposed between the second outer shell 2 and the second sound-insulating cotton 402. The position of the dustproof net 403 is exactly covering the inner side of the heat dissipation holes 404. This structure, which stacks the heat dissipation holes 404 and the dustproof net 403 inside and outside, ensures that internal heat can be dissipated outward through the heat dissipation holes 404 while effectively preventing external dust from entering the device through the heat dissipation holes 404, thereby achieving excellent dust prevention function without sacrificing heat dissipation effect.

[0030] As a preferred embodiment, in order to ensure that the quick-release mechanism 3 is subjected to uniform force and operates stably during locking and unlocking, the quick-release mechanism 3 includes connecting rods 308 and locking plates 309 symmetrically arranged with the central axis of the pressing block 305 as the axis of symmetry. The symmetrical connecting rods 308 are rotatably connected to both sides of the wedge block 306. This symmetrical layout allows the wedge block 306 to move outward smoothly when the pressing block 305 is pressed down, and to uniformly transmit the pulling force to the locking plates 309 on both sides, avoiding jamming or skewness that may be caused by unilateral force.

[0031] As another preferred embodiment, in order for the spring 307 to provide a stable and positive restoring force, the two ends of the spring 307 are precisely configured to abut against the inner sidewall of the wedge block 306 and the inner wall of the protective shell 304, respectively. This end-to-end direct abutment method ensures that the elastic force of the spring 307 always acts along the horizontal movement direction of the wedge block 306 during compression and release, ensuring the reliability and speed of the locking action.

[0032] As a preferred embodiment with more comprehensive functions, the pulley protection device that can be quickly installed is also provided with an auxiliary mechanism 4. The auxiliary mechanism 4 specifically includes a first sound insulation cotton 401 and a second sound insulation cotton 402. The first sound insulation cotton 401 is attached to the inner wall of the first outer shell 1, and the second sound insulation cotton 402 is attached to the inner wall of the second outer shell 2. In order to balance the heat dissipation requirements, heat dissipation holes 404 are provided on the second outer shell 2. In order to prevent dust from entering, the auxiliary mechanism 4 further includes a dustproof net 403. The dustproof net 403 is disposed between the second outer shell 2 and the second sound insulation cotton 402, and completely covers the heat dissipation holes 404 from the inside, realizing the organic combination of heat dissipation and dust prevention functions.

[0033] Working principle: During installation, when downward pressure is applied to the pressing block 305, the pressing block 305 can slide downward in the vertical direction. The lower surface of the pressing block 305 then applies pressure to the wedge block 306, whose upper surface is an inclined plane. This pressure is decomposed by the inclined plane, thereby pushing the wedge block 306 to slide outward in the horizontal direction. While the wedge block 306 moves outward, on the one hand, the spring 307 located inside the wedge block 306 is compressed, and on the other hand, the connecting rod 308 rotatably connected to it pulls the locking plate 309 to rotate outward, thereby making room for the insertion of the pin 302. At this time, the first outer shell 1 and the second outer shell 2 are aligned and closed, so that the pin 302 on the first outer shell 1 is completely inserted into the slot made by the locking plate 309.

[0034] When the external force applied to the pressing block 305 is removed, the spring 307, which is under pressure, releases its elastic force and pushes the wedge block 306 to reset inward. During the reset movement, the wedge block 306 pushes the locking plate 309 to rotate inward through the connecting rod 308, so that the locking plate 309 is precisely locked into the groove 303 on the outer peripheral surface of the pin 302. This completes the secure locking between the first outer shell 1 and the second outer shell 2. The whole process does not require any tools and achieves the purpose of quick installation.

Claims

1. A pulley protection device that can be quickly installed includes a first housing (1) and a second housing (2) that can be engaged with the first housing (1) to form a receiving space for covering the pulley. A fixing block (301) is fixedly connected to the first housing (1), and a pin (302) is fixedly connected to the fixing block (301). A groove (303) is provided on the outer peripheral surface of the pin (302). Its features are, A quick-release mechanism (3) is also fixedly connected to the second outer shell (2). A protective shell (304) is provided inside the quick-release mechanism (3). A pressing block (305) is slidably arranged inside the protective shell (304) in the vertical direction. The lower surface of the pressing block (305) slides against the upper surface of the wedge block (306). The upper surface of the wedge block (306) is an inclined plane, and the wedge block (306) is slidably arranged inside the protective shell (304) in the horizontal direction. A spring (307) is provided on the inner side of the block (306). The outer side of the wedge block (306) is rotatably connected by one end of a connecting rod (308). The other end of the connecting rod (308) is rotatably connected to a locking plate (309). When the wedge block (306) moves along the horizontal direction, the locking plate (309) is driven by the connecting rod (308) to move between a locked position that can be engaged in the groove (303) of the pin (302) and an unlocked position that is disengaged from the groove (303).

2. The quick-installable pulley protection device according to claim 1, characterized in that, The quick-release mechanism (3) includes connecting rods (308) and clamping plates (309) symmetrically arranged with the central axis of the pressing block (305) as the axis of symmetry. The connecting rods (308) are rotatably connected to both sides of the wedge block (306).

3. The quick-installable pulley protection device according to claim 1, characterized in that, The two ends of the spring (307) abut against the inner wall of the wedge block (306) and the inner wall of the protective shell (304), respectively.

4. The quick-installable pulley protection device according to claim 1, characterized in that, The quick-installable pulley protection device also includes an auxiliary mechanism (4) disposed within the first housing (1) and the second housing (2).

5. The quick-installable pulley protection device according to claim 4, characterized in that, The auxiliary mechanism (4) includes a first sound insulation cotton (401) and a second sound insulation cotton (402). The first sound insulation cotton (401) is attached to the inner wall of the first outer shell (1), and the second sound insulation cotton (402) is attached to the inner wall of the second outer shell (2).

6. The quick-installable pulley protection device according to claim 5, characterized in that, The second outer shell (2) has heat dissipation holes (404).

7. The quick-installable pulley protection device according to claim 6, characterized in that, The auxiliary mechanism (4) also includes a dustproof net (403), which is disposed between the second outer shell (2) and the second sound insulation cotton (402) and covers the inside of the heat dissipation hole (404).

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