Vibrating screen frame lifting device

Abstract

The utility model relates to the technical field of screening machine, concretely is a kind of vibrating screening machine frame body lifting device, the lifting device includes jacking mechanism, the jacking mechanism includes power part, lifting part and several connecting parts, the connecting part is all rotationally arranged on lifting part, for connecting lifting part with frame body assembly, the power part is located at the bottom of lifting part, for driving lifting part jacking or falling back;The connecting part is also provided with locking mechanism, the locking mechanism is used to fix the connecting part on lifting part and frame body assembly. By setting the jacking block of relatively rotatable and the lug cooperation of multilayer frame body assembly, and cooperate with the unique locking mechanism, so that single jacking mechanism can synchronously jacking multilayer frame body, and after jacking in place by inserting lock pin, connecting part and lifting part are rigidly locked, to effectively prevent the accidental rotation of frame body assembly in jacking process and after jacking in place, greatly improve the security and stability of operation.

Description

Technical Field

[0001] This utility model relates to the field of screening machine technology, and in particular to a lifting device for the frame of a vibrating screening machine. Background Technology

[0002] Vibrating screens are core equipment for material grading in industries such as chemical, food, pharmaceutical, and mining. Their multi-layered frame components are crucial for ensuring normal operation. During production breaks or after each batch, thorough cleaning of the equipment's interior is necessary to prevent cross-contamination. Additionally, the screens, being consumable parts, require regular replacement. This necessitates lifting and securing these frames to provide ample operating space. However, the current industry standard for maintenance still relies on jacks, pry bars, or simple hoisting equipment, with operators manually lifting or hoisting the frames.

[0003] This approach has many prominent problems: In terms of safety, jacks or crowbars are prone to slippage when the force is uneven, and the sudden fall of a heavy frame can easily cause serious personal injury. Simple hoisting also has potential stability hazards.

[0004] In terms of efficiency, the operation process is cumbersome, requiring multiple people to find support points and make multiple attempts to lift the equipment, which consumes a lot of time and manpower and significantly prolongs the equipment downtime.

[0005] In terms of reliability, the lifting process lacks effective mechanical locking protection and relies solely on the one-way valve of the hydraulic jack or manual operation, which poses a risk of failure due to leakage or fatigue.

[0006] At the same time, this operation is entirely dependent on manual labor, especially for large screening machines, whose frames weigh several tons, making the labor intensity of the operators extremely high. Utility Model Content

[0007] The main purpose of this utility model is to provide a lifting device for the frame of a vibrating screen to solve the problems raised in related technologies.

[0008] To achieve the above objectives, according to one aspect of the present invention, a lifting device for a vibrating screen frame is provided, applicable to a vibrating screen. The vibrating screen includes a base and a frame assembly. The lifting device includes a lifting mechanism, which includes a power unit, a lifting unit, and several connecting parts. The connecting parts are rotatably mounted on the lifting unit for connecting the lifting unit to the frame assembly. The power unit is located at the bottom of the lifting unit for driving the lifting unit to lift or lower. The connecting parts are also provided with a locking mechanism for fixing the connecting parts to the lifting unit and the frame assembly.

[0009] Furthermore, both the base and the lifting mechanism are mounted on the base plate, with the lifting mechanism located on one side of the base.

[0010] Furthermore, the frame assembly includes a first frame and a second frame, the second frame being fastened to the first frame, and a dust cover being fastened to the second frame.

[0011] Furthermore, the first frame, the second frame, and the dust cover are all fixedly provided with support ears on their outer edges. The support ears are connected to the connecting part to connect the first frame, the second frame, the dust cover, and the lifting mechanism.

[0012] Furthermore, the power unit includes a cylinder, and a pressure regulating valve is provided on the air inlet of the cylinder. A one-way valve is connected to the air inlet side of the pressure regulating valve, and the one-way valve is connected to the air source through a hose.

[0013] Furthermore, the lifting unit includes a guide rod fixing plate, a lifting rod, and several guide rods. The guide rods are telescopic rods. The outer cylinder of the guide rod is fixedly connected to the outer wall of the cylinder, the top end of the inner rod is fixedly connected to the guide rod fixing plate, the bottom end of the lifting rod is fixedly connected to the guide rod fixing plate, and the piston rod of the cylinder is fixedly connected to the guide rod fixing plate.

[0014] Furthermore, the connecting part includes three lifting blocks, and a sleeve is fixedly provided on the lower side of the lifting block. Both the lifting block and the sleeve are rotatably sleeved on the lifting rod, and a slot is provided on one side of the lifting block.

[0015] Furthermore, the lifting rod has several first pin holes, the sleeve has a second pin hole, and the lifting block has a third pin hole. Locking pins can be inserted into each of the pin holes, and the pin holes and locking pins constitute a locking mechanism.

[0016] Compared with the prior art, the present invention has the following beneficial effects: By setting up a lifting block that can rotate relative to each other and cooperating with the lugs of the multi-layer frame assembly, along with a unique locking mechanism, a single lifting mechanism can simultaneously lift the multi-layer frame. After being lifted into place, the connecting part and the lifting part are rigidly locked by inserting a locking pin, thereby effectively preventing the frame assembly from rotating unexpectedly during the lifting process and after being lifted into place, greatly improving the safety and stability of operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is a schematic diagram of the lifting mechanism structure of this utility model. Figure 1 ; Figure 3 This is a schematic diagram of the lifting mechanism structure of this utility model. Figure 2 .

[0018] Figure label: 1. Base plate; 2. Base; 3. First frame; 4. Second frame; 5. Dust cover; 6. First lug; 7. Second lug; 8. Third lug; 9. Lifting mechanism; 91. Cylinder; 911. Pressure regulating valve; 912. One-way valve; 92. Guide rod fixing plate; 93. Lifting rod; 94. First pin hole; 95. Lifting block; 951. Slot; 952. Third pin hole; 96. Sleeve; 97. Second pin hole; 98. Locking pin; 99. Guide rod. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] This embodiment provides a lifting device for the frame of a vibrating screen, suitable for vibrating screens, such as... Figure 1 As shown, the vibrating screen includes a base 2 and a frame assembly stacked thereon.

[0021] The entire lifting device is installed on the base plate 1. The base 2 and the lifting mechanism 9 are both fixedly installed on the base plate 1, and the lifting mechanism 9 is located on one side of the base 2 to facilitate the lateral lifting operation of the frame assembly.

[0022] To balance the lifting of the frame components, multiple lifting mechanisms 9 can be installed around the base 2.

[0023] The frame assembly, from bottom to top, includes a first frame 3, a second frame 4, and a dust cover 5. The second frame 4 is fastened onto the first frame 3, and the dust cover 5 is fastened onto the second frame 4. For connection with the lifting mechanism 9, lugs are fixedly provided on the outer edges of the first frame 3, the second frame 4, and the dust cover 5, namely a first lug 6, a second lug 7, and a third lug 8. Each of these lugs has a through hole.

[0024] In order to cooperate with multiple lifting mechanisms 9, the first frame 3, the second frame 4 and the outer ring of the dust cover 5 are provided with multiple lugs to provide multi-point support for the frame assembly, so that it can be lifted steadily.

[0025] like Figure 2 and Figure 3 As shown, the lifting mechanism 9 includes a power unit, a lifting unit, and several connecting parts.

[0026] The power unit provides the power required for lifting, and is preferably a cylinder 91. To limit the lifting force and ensure safety, a pressure regulating valve 911 is installed on the air inlet of the cylinder 91. A one-way valve 912 is also connected to the air inlet side of the pressure regulating valve 911. The one-way valve 912 is connected to an external air source via a hose to prevent backflow of gas.

[0027] The lifting unit is used to convert the drive of the power unit into linear lifting motion. The lifting unit includes a guide rod fixing plate 92, a lifting rod 93, and two guide rods 99. The guide rods 99 are preferably telescopic rods, with their outer cylinder fixedly connected to the outer wall of the cylinder 91, and the top end of their inner rod fixedly connected to the guide rod fixing plate 92. The bottom end of the lifting rod 93 is fixedly connected to the guide rod fixing plate 92, and its top end extends vertically upwards. The top end of the piston rod of the cylinder 91 is also fixedly connected to the guide rod fixing plate 92. Therefore, when the piston rod of the cylinder 91 extends or retracts, it drives the guide rod fixing plate 92, the lifting rod 93, and the inner rods of the guide rods 99 to perform synchronous and smooth lifting motion.

[0028] The connecting part is used to connect the lifting part to the frame assembly. In this embodiment, the connecting part includes three lifting blocks 95. A sleeve 96 is fixedly provided on the lower side of each lifting block 95. The lifting block 95 and the sleeve 96 are rotatably fitted onto the lifting rod 93 through a central through hole, so that the lifting block 95 can rotate about the axis of the lifting rod 93. A slot 951 is provided on the side of each lifting block 95 facing the frame assembly. The slot 951 is used to receive and lock the support lug on the frame assembly.

[0029] To achieve reliable fixation, this invention also includes a locking mechanism. This locking mechanism consists of pin holes on different components and locking pins 98 inserted therein. Specifically, multiple first pin holes 94 are provided in the vertical direction of the lifting rod 93. Second pin holes 97 are provided on each sleeve 96. Third pin holes 952 are provided on each lifting block 95. The holes on the first lug 6, second lug 7, and third lug 8 also serve as part of the locking mechanism during assembly.

[0030] The working process of this lifting device is as follows: Initially, cylinder 91 is in the lowered position. The operator rotates the three lifting blocks 95 sequentially, so that the slot 951 of the lowermost lifting block 95 engages with the first lug 6 of the first frame 3, the slot 951 of the middle lifting block 95 engages with the second lug 7 of the second frame 4, and the slot 951 of the uppermost lifting block 95 engages with the third lug 8 of the dust cover 5. The angle of the lifting blocks 95 is adjusted so that the holes on the lugs are aligned with the third pin holes 952 on the lifting blocks 95. At this point, the second pin hole 97 on the sleeve 96 and the first pin hole 94 on the lifting rod 93 are on the same straight line. Then, the locking pin 98 is inserted into the third pin hole 952 and the holes of the lugs, thereby fixing the lugs to the lifting blocks 95.

[0031] After completing the above connections, cylinder 91 is activated. The piston rod of cylinder 91 extends, pushing the lifting rod 93 and its entire connecting part upward through the guide rod fixing plate 92, thereby lifting the first frame 3, the second frame 4, and the dust cover 5 together. When the frame assembly is lifted to the required height, control cylinder 91 to stop. At this time, due to the gravity of the frame assembly, the lifting block 95 tends to rotate around the lifting rod 93. To ensure safety, the lifting block 95 needs to be locked to the lifting rod 93. The operator finds the position where the second pin hole 97 on the sleeve 96 aligns with the nearest first pin hole 94 on the lifting rod 93, fine-tunes the extension and retraction of the piston rod of cylinder 91 to make the hole positions accurately aligned, and then inserts another locking pin 98 into the aligned second pin hole 97 and first pin hole 94. In this way, the lifting block 95 is rigidly connected to the lifting rod 93 through the sleeve 96 and the locking pin 98, and cannot rotate, effectively preventing the frame assembly from falling off due to accidental rotation of the lifting block 95, thus ensuring the safety of maintenance operations.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A lifting device for the frame of a vibrating screen, suitable for a vibrating screen, wherein the vibrating screen includes a base (2) and a frame assembly, characterized in that, The lifting device includes a lifting mechanism (9), which includes a power unit, a lifting unit and several connecting parts. The connecting parts are rotatably mounted on the lifting unit and are used to connect the lifting unit to the frame assembly. The power unit is located at the bottom of the lifting unit and is used to drive the lifting unit to lift or fall. The connecting parts are also provided with a locking mechanism, which is used to fix the connecting parts to the lifting unit and the frame assembly.

2. The vibrating screen frame lifting device according to claim 1, characterized in that, The base (2) and the lifting mechanism (9) are both installed on the base plate (1), and the lifting mechanism (9) is located on one side of the base (2).

3. The vibrating screen frame lifting device according to claim 1, characterized in that, The frame assembly includes a first frame (3) and a second frame (4), the second frame (4) being fastened to the first frame (3), and a dust cover (5) being fastened to the second frame (4).

4. The vibrating screen frame lifting device according to claim 3, characterized in that, The outer edges of the first frame (3), the second frame (4), and the dust cover (5) are all fixed with lugs (6,7,8). The lugs (6,7,8) are connected to the connecting part to connect the first frame (3), the second frame (4), the dust cover (5), and the lifting mechanism (9).

5. The vibrating screen frame lifting device according to claim 1, characterized in that, The power unit includes a cylinder (91), and a pressure regulating valve (911) is provided on the air inlet of the cylinder (91). A one-way valve (912) is connected to the air inlet side of the pressure regulating valve (911), and the one-way valve (912) is connected to the air source through a hose.

6. The vibrating screen frame lifting device according to claim 5, characterized in that, The lifting unit includes a guide rod fixing plate (92), a lifting rod (93) and several guide rods (99). The guide rods (99) are telescopic rods. The outer cylinder of the guide rod (99) is fixedly connected to the outer wall of the cylinder (91), the top end of the inner rod is fixedly connected to the guide rod fixing plate (92), the bottom end of the lifting rod (93) is fixedly connected to the guide rod fixing plate (92), and the piston rod of the cylinder (91) is fixedly connected to the guide rod fixing plate (92).

7. The vibrating screen frame lifting device according to claim 6, characterized in that, The connecting part includes three lifting blocks (95), and a sleeve (96) is fixedly provided on the lower side of the lifting block (95). The lifting block (95) and the sleeve (96) are rotatably sleeved on the lifting rod (93). A slot (951) is provided on one side of the lifting block (95).

8. The vibrating screen frame lifting device according to claim 7, characterized in that, The lifting rod (93) has several first pin holes (94), the sleeve (96) has a second pin hole (97), and the lifting block (95) has a third pin hole (952). Locking pins (98) can be inserted into the pin holes (94, 97, 952). The pin holes (94, 97, 952) and the locking pins (98) constitute a locking mechanism.

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