Locking mechanism and screen maintenance device

By designing a locking mechanism and a buffer plate, the problem of multiple operators and long maintenance time required for the screen mesh of existing multi-layer environmental protection vibrating screens has been solved, enabling fast and convenient screen mesh maintenance and replacement, and improving the efficiency of the sand and gravel processing system.

CN224265824UActive Publication Date: 2026-05-22CHINA WATER CONSERVANCY & HYDROPOWER NO 9 ENG BUREAU CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA WATER CONSERVANCY & HYDROPOWER NO 9 ENG BUREAU CO LTD
Filing Date
2025-04-22
Publication Date
2026-05-22

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Abstract

The utility model relates to the field of vibrating screen discloses a locking mechanism and screen cloth maintenance device, including a locking mechanism, it includes, the door buckle, the door buckle includes fastening hook and mounting bracket, the mounting bracket installs in the outside of vibrating screen, fastening hook sets up on the mounting bracket, the door buckle sets up two groups, is located vibrating screen's both sides respectively, can stably realize the fixation to the door through two groups door buckle, through the unique hook body structure design, realizes quick installation and disassembly door lock pole, can be completed only needing two operating personnel. Hook body one end big one end small, after the lock rod is clamped, the wider end helps the gravitational force to enhance the fastening effect of the door, the oval slot design is convenient for the lock rod to push in, realizes effective limit fixing. Compared with the traditional bolt mode, the design guarantees the fastening simultaneously, and the operation is more convenient and efficient.
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Description

Technical Field

[0001] This utility model relates to the field of vibrating screens, and in particular to a locking mechanism and a screen maintenance device. Background Technology

[0002] In sand and gravel processing systems, multi-layer environmentally friendly vibrating screens are one of the key pieces of equipment, and their performance and structural design directly affect the system's maintenance efficiency, production capacity, and construction progress. However, existing multi-layer environmentally friendly vibrating screens have some design flaws.

[0003] The vibrating screen's back panel inspection port cover consists of five panels of three different types, each secured with three bolts at each end, totaling 30 bolts per unit. This complex cover structure not only makes installation and disassembly cumbersome, but also lacks a buffer device at the base beneath the cover, resulting in high impact force during aggregate feeding, which can damage the shape and quality of the aggregate. Each maintenance and screen replacement requires six people to operate simultaneously to open the cover bolts, with maintenance time reaching up to six hours. This results in a large workload, high labor costs, long processing time, and low efficiency, significantly limiting the operational efficiency and construction progress of the sand and gravel processing system. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is that each maintenance and replacement of the screen requires 6 people to operate, 30 bolts to be opened, and takes 6 hours. The workload is large, the cost is high, and the efficiency is low, which seriously affects the operating efficiency and construction progress of the sand and gravel processing system.

[0005] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes a locking mechanism, which includes,

[0006] The door latch includes a fastening hook and a mounting bracket. The mounting bracket is installed on the outside of the vibrating screen, and the fastening hook is disposed on the mounting bracket.

[0007] The door latches are configured in two sets, located on both sides of the vibrating screen, and the door can be stably fixed by the two sets of door latches.

[0008] The locking rod, which works in conjunction with the fastening hook for fixation, has a length at both ends that exceeds two sets of door latches. This not only makes it easier for operators to pick up the locking rod and engage it with the fastening hook, but also prevents the fastening hook from becoming misaligned with the locking rod and causing it to loosen.

[0009] In a preferred embodiment of the locking mechanism of this utility model: the fastening hook includes a hook body and a slot formed on the outside of the hook body, the slot being used to engage the locking rod, thereby achieving the limiting and fixing of the door.

[0010] In a preferred embodiment of the locking mechanism of this utility model: the mounting frame includes a mounting plate, a short rod, and an anti-detachment block. The two ends of the short rod are fixedly connected to the mounting plate and the anti-detachment block, respectively. The other end of the mounting plate, which is not connected to the short rod, is fixedly connected to the outside of the vibrating screen. By hinged to the outside of the short rod by the hook, the position of the hook can be adjusted to achieve the fastening and loosening of the hook on the locking rod.

[0011] In a preferred embodiment of the locking mechanism of this utility model: one end of the hook body is hinged to the short rod, and the end of the hook body that is hinged to the short rod gradually widens towards the other end. The slot is opened at the wider end of the hook body. The special structural design of the hook body, which is large at one end and small at the other end, can improve the door fastening effect by the gravity of its wider end after the hook body is engaged with the locking rod.

[0012] The slot is designed with an elliptical opening to facilitate the installation of the locking rod inside the slot, thereby limiting and fixing the locking rod.

[0013] This utility model also provides a screen maintenance device, including the aforementioned locking mechanism, and further comprising,

[0014] The frame is designed with an inclined surface at the connection point with the vibrating screen. The frame is installed and connected to the vibrating screen by welding. Side reinforcing ribs are fixedly connected to the inner two side walls of the frame, and a top reinforcing rib is fixedly connected to the inner top of the frame. Mounting buckles are fixedly connected to the outer side of the frame.

[0015] A protective door is provided, which is connected to the frame via a mounting buckle. The protective door, which is hinged to the outside of the frame, can provide rapid protection for the screen inside the vibrating screen.

[0016] In a preferred embodiment of the screen maintenance device of this utility model: a limiting rod is provided at the bottom end of the side of the frame where the protective door is located. The limiting rod includes a screw and a knob fixedly connected to the bottom end of the screw. The screw is threadedly connected to the frame. The protective door is limited by adjusting the position of the screw.

[0017] In a preferred embodiment of the screen maintenance device of this utility model: a buffer plate is welded to the outside of the vibrating screen. The buffer plate is located at one end of the frame where a protective door is provided. The buffer plate gradually slopes downward from the protective door in a direction away from the protective door. The inclined design of the buffer plate can buffer the impact of the material being fed.

[0018] In a preferred embodiment of the screen maintenance device of this utility model: the protective door includes a door body and a rotating shaft fixedly connected to the outside of the door body. The rotating shaft is located inside the mounting buckle and rotates inside the mounting buckle. By rotating the door body, the protective door can be opened and closed through the rotating shaft and the mounting buckle.

[0019] The advantages of this invention are as follows: Through its unique hook structure design, it enables rapid installation and removal of the door lock rod, requiring only two operators. The hook is wider at one end and narrower at the other; after engaging the lock rod, the wider end uses gravity to enhance the door's secureness. The elliptical groove design facilitates the insertion of the lock rod, achieving effective limiting and fixation. Compared to traditional bolt methods, this design ensures secure fastening while offering greater convenience and efficiency.

[0020] When it is necessary to inspect and maintain the screen inside the vibrating screen, simply turn the protective door to open it. After the inspection and maintenance is completed, simply reverse the protective door. Compared with the traditional bolt-fixed mounting plate, it is easy to operate and cannot be disassembled repeatedly. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model, and are not intended to limit the utility model.

[0022] Figure 1 A side view of the present invention and the vibrating screen installation is shown.

[0023] Figure 2 A front view of the vibrating screen of this utility model is shown.

[0024] Figure 3 A schematic diagram of the overall structure of this utility model is shown.

[0025] Figure 4 A partial structural schematic diagram of the present invention is shown.

[0026] Figure 5 A schematic diagram of the overall structure of the door latch of this utility model is shown.

[0027] Figure 6 An enlarged schematic diagram of part A of this utility model is shown.

[0028] Figure 7 An enlarged schematic diagram of part B of this utility model is shown. Detailed Implementation

[0029] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0030] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0031] Reference Figures 1-5 This embodiment provides a locking mechanism, which includes:

[0032] Door latch 1, door latch 1 includes fastening hook 11 and mounting frame 12, mounting frame 12 is installed on the outside of vibrating screen 100, and fastening hook 11 is set on mounting frame 12;

[0033] The door latch 1 is set in two sets, located on both sides of the vibrating screen 100 respectively. The two sets of door latch 1 can stably fix the door.

[0034] Locking rod 2, which works in conjunction with fastening hook 11 to achieve fixation. The length of both ends of locking rod 2 exceeds the length of two sets of door latches 1. This not only makes it easier for operators to pick up locking rod 2 and engage it with fastening hook 11, but also prevents the fastening hook 11 from becoming misaligned with locking rod 2 and causing it to loosen.

[0035] The fastening hook 11 includes a hook body 111 and a slot 112 opened on the outside of the hook body 111. The slot 112 is used to engage the locking rod 2, thereby achieving the limiting and fixing of the door.

[0036] The mounting frame 12 includes a mounting plate 121, a short rod 122, and an anti-detachment block 123. Both ends of the short rod 122 are fixedly connected to the mounting plate 121 and the anti-detachment block 123, respectively. The other end of the mounting plate 121, which is not connected to the short rod 122, is fixedly connected to the outside of the vibrating screen 100. It is hinged to the outside of the short rod 122 by a hook 111, so that the position of the hook 111 can be adjusted to achieve the fastening and loosening of the hook 111 on the locking rod 2.

[0037] After the door is closed, the two operators lift both ends of the locking rod 2 and rotate the fastening hook 11. The fastening hook 11 will then rotate around the short rod 122 until the slot 112 of the fastening hook 11 engages with the locking rod 2. At this point, the locking rod 2 and the fastening hook 11 are released. The fastening hook 11 will then hold the locking rod 2 in place under the force of gravity, and the locking rod 2 can then limit and fix the door. Compared with the traditional method of installation and disassembly using bolts, this method ensures the installation is secure while enabling quick installation and disassembly, and only requires two operators.

[0038] As one embodiment provided, such as Figure 5 One end of the hook 111 is hinged to the short rod 122. The end of the hook 111 that is hinged to the short rod 122 gradually widens towards the other end. The slot 112 is opened at the wider end of the hook 111. The special structural design of the hook 111, which is large at one end and small at the other end, can improve the door fastening effect by the gravity of its wider end after the hook 111 is engaged with the locking rod 2.

[0039] The slot 112 has an overall elliptical opening design, which facilitates the installation of the locking rod 2 inside the slot 112 to achieve the limiting and fixing of the locking rod 2.

[0040] By cleverly employing a unique structural design with one end larger than the other, the wider end of the hook 111, after engaging the locking rod 2, can significantly enhance the securing effect on the door using its own weight, thus ensuring the door's stability. Furthermore, the slot 112 features an overall elliptical opening design. This design is not only structurally sound but also easy to operate, allowing the locking rod 2 to be easily pushed into the slot 112 from below, thereby effectively limiting and fixing the locking rod 2 and greatly improving the practicality and reliability of the entire device.

[0041] As one embodiment provided, such as Figures 1-4 , Figure 6 A screen maintenance device, including a locking mechanism, further includes,

[0042] The frame 3 is connected to the vibrating screen 100 at an angle. The frame 3 is installed and connected to the vibrating screen 100 by welding. Side reinforcing ribs 31 are fixedly connected to the inner two side walls of the frame 3. Top reinforcing ribs 32 are fixedly connected to the inner top of the frame 3. Mounting buckles 33 are fixedly connected to the outer side of the frame 3.

[0043] The protective door 4 is connected to the frame 3 by the mounting buckle 33. The protective door 4, which is hinged to the outside of the frame 3, can quickly protect the screen inside the vibrating screen 100.

[0044] The protective door 4 includes a door body 41 and a rotating shaft 42 fixedly connected to the outside of the door body 41. The rotating shaft 42 is located inside the mounting buckle 33 and rotates inside the mounting buckle 33. By rotating the door body 41, the protective door 4 can be opened and closed by the rotating shaft 42 in conjunction with the mounting buckle 33.

[0045] When it is necessary to inspect and maintain the screen inside the vibrating screen 100, simply rotate the protective door 4 to open it. After the inspection and maintenance is completed, simply reverse the protective door 4. Compared with the traditional bolt-fixed mounting plate, it is easy to operate and cannot be disassembled repeatedly.

[0046] As one embodiment provided, such as Figure 7 A limit rod 34 is provided at the bottom of one side of the frame 3 where the protective door 4 is located. The limit rod 34 includes a screw 341 and a knob 342 fixedly connected to the bottom of the screw 341. The screw 341 is threadedly connected to the frame 3. The protective door 4 is limited by adjusting the position of the screw 341.

[0047] When the protective door 4 is closed, the knob 342 is turned clockwise to adjust the height of the screw 341 upwards, thereby limiting the protective door 4. When it is necessary to open the protective door 4, the knob 342 is turned counterclockwise to adjust the height of the screw 341 downwards.

[0048] As one embodiment provided, such as Figure 1 , Figure 2 A buffer plate 35 is welded to the outside of the vibrating screen 100. The buffer plate 35 is located at the end of the frame 3 where the protective door 4 is set. The buffer plate 35 gradually slopes downward from the protective door 4 away from the protective door 4. The inclined design of the buffer plate 35 can buffer the impact of the material being fed, thereby containing the material and reducing loss.

[0049] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A locking mechanism, characterized in that: include, Door latch (1), the door latch (1) includes a fastening hook (11) and a mounting bracket (12), the mounting bracket (12) is installed on the outside of the vibrating screen (100), and the fastening hook (11) is disposed on the mounting bracket (12); The door latch (1) is configured in two sets, located on both sides of the vibrating screen (100); Locking rod (2), which is used in conjunction with fastening hook (11) to achieve fixation, and the length of both ends of the locking rod (2) exceeds the length of the two sets of door latches (1).

2. The locking mechanism according to claim 1, characterized in that: The fastening hook (11) includes a hook body (111) and a slot (112) formed on the outside of the hook body (111), the slot (112) being used to engage the locking rod (2).

3. The locking mechanism according to claim 2, characterized in that: The mounting frame (12) includes a mounting plate (121), a short rod (122), and an anti-detachment block (123). The two ends of the short rod (122) are fixedly connected to the mounting plate (121) and the anti-detachment block (123), respectively. The other end of the mounting plate (121) that is not connected to the short rod (122) is fixedly connected to the outside of the vibrating screen (100).

4. The locking mechanism according to claim 3, characterized in that: One end of the hook (111) is hinged to the short rod (122), and the end of the hook (111) that is hinged to the short rod (122) gradually widens towards the other end. The slot (112) is opened at the wider end of the hook (111). The slot (112) is designed as an elliptical opening.

5. A screen maintenance device, characterized in that: Including the locking mechanism as described in any one of claims 1 to 4, further comprising: The frame (3) is connected to the vibrating screen (100) with an inclined surface. The frame (3) is installed and connected to the vibrating screen (100) by welding. Side reinforcing ribs (31) are fixedly connected to the inner two side walls of the frame (3). Top reinforcing ribs (32) are fixedly connected to the inner top of the frame (3). Mounting buckles (33) are fixedly connected to the outer side of the frame (3). The protective door (4) is connected to the frame (3) via the mounting buckle (33).

6. The screen maintenance device according to claim 5, characterized in that: The frame (3) is provided with a limit rod (34) at the bottom of one side of the protective door (4). The limit rod (34) includes a screw (341) and a knob (342) fixedly connected to the bottom of the screw (341). The screw (341) is threadedly connected to the frame (3).

7. The screen maintenance device according to claim 6, characterized in that: A buffer plate (35) is welded to the outside of the vibrating screen (100). The buffer plate (35) is located at one end of the frame (3) where the protective door (4) is provided. The buffer plate (35) gradually tilts downward from the protective door (4) away from the protective door (4).

8. The screen maintenance device according to claim 6 or 7, characterized in that: The protective door (4) includes a door body (41) and a rotating shaft (42) fixedly connected to the outside of the door body (41). The rotating shaft (42) is located inside the mounting buckle (33) and rotates inside the mounting buckle (33).