Angle adjusting mechanism for vibrating screen

Abstract

The utility model relates to an angle adjusting mechanism for a vibrating screen. The angle adjusting mechanism comprises a base, a screen frame, a screen mesh, a jack assembly and a cushion block assembly. A detachable cushion block is arranged on the cushion block assembly; the jack assembly is arranged below the extending long plate of the screen frame, a handle part in the jack assembly is pressed, and the screen frame is jacked through a piston rod. The jack assembly comprises a supporting part; the supporting part is arranged on the upper portion of the jack, covers the piston rod and enables the upwards-jacked piston rod not to deflect. When working is started, a handle in the jack is pressed, so that the piston rod abuts against the supporting upper plate and jacks the screen frame upwards, the stress area of the piston rod is increased through the supporting part, and the piston rod is not prone to inclining; after the screen frame is jacked to a certain angle, a cushion block is installed on the cushion block assembly, then pressure is released to enable the piston rod to descend, and adjustment of the inclination angle of the screen frame is completed. The device has the beneficial effects that the inclination of the device is convenient to adjust, the energy consumption is reduced, and the installation is safe.

Description

Technical Field

[0001] The utility model relates to the technical field of vibrating screens, in particular to an angle adjustment mechanism for vibrating screens. Background Art

[0002] At present, due to the different types of materials that need to be screened by vibrating screens, and their weights and diameters are also different, the traditional vibrating screening production line has a wide range of equipment, the investment cost of the production line is relatively high, and the process is relatively complicated and cumbersome; which leads to a high failure rate, high labor intensity of workers, excessive energy consumption, high operating costs, and a large footprint. Since the sand is processed one by one in many devices, the sand output rate of the production line is also very unsatisfactory.

[0003] By changing the inclination angle of the vibrating screen, different types of materials can be screened to reduce excessive investment in production line equipment. However, during the vibration screening process, when the screen frame of the vibrating screen vibrates, the provided pads will slide or even fall with the vibration, causing the vibrating screen to deflect or tip over, thereby causing damage to the device components and causing safety problems.

[0004] Therefore, based on the customer feedback on the shortcomings of the existing vibrating screen, the inventors made further improvements according to the proposed defects and deficiencies to overcome the above problems. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a vibrating screen that is convenient to adjust the inclination of the device, reduces energy consumption and is safe to install.

[0006] The purpose of the utility model is achieved through the following technical solutions: an angle adjustment mechanism for a vibrating screen, comprising a base, a screen frame, a screen mesh arranged in the screen frame, the screen frame being suspended on the base via a support assembly, and vibrating assemblies being arranged on the left and right sides of the screen frame, characterized in that: it also includes a jack assembly and a spacer assembly;

[0007] The cushion block assembly is placed between the support assembly and the base, and a detachable cushion block is provided on the cushion block assembly;

[0008] The jack assembly is arranged below the screen frame, and the screen frame is lifted up by the piston rod in the jack assembly;

[0009] When starting work, press the handle in the jack to make the piston rod rest against the supporting upper plate and lift the screen frame. After lifting the screen frame to a certain angle, install the pad on the pad assembly, then release the pressure to make the piston rod drop, and complete the adjustment of the screen frame inclination angle.

[0010] As a preferred technical solution of the present application, the pad assembly includes a mounting frame and a screw rod; the mounting frame is arranged on the base and the mounting frame penetrates through the screw rod that can move up and down, and at the same time, a locking nut is provided to lock the screw rod;

[0011] When the sieve frame is jacked up by a jack, rotate the screw rod to make the screw rod displace upward until a certain space is formed between the support assembly and the upper surface of the mounting frame for installing the pad.

[0012] As a preferred technical solution of the present application, the pads are divided into pad A and pad B. The pad A with protrusions and the pad B with adapted depressions can be inserted into each other, and the pad A and the pad B are arranged on the mounting frame in a cooperative manner.

[0013] As a preferred technical solution of the present application, a limiting part is further included; the limiting part includes a bottom frame, a spring B, and a spring column; one end of the spring B is arranged on the bottom frame below the mounting frame, and the other end is connected to the spring column. The bottom frame is provided with a support column upward and the support column penetrates through the mounting frame. A limiting cover is arranged at the protruding end of the support column, and the limiting cover can rotate around the support column.

[0014] As a preferred technical solution of the present application, the vibrating screen itself is horizontally arranged on the ground, and the screen mesh is arranged obliquely downward by 5° in the sieve frame to facilitate screening of materials.

[0015] The utility model has the following advantages:

[0016] (1) It is convenient to adjust the inclination of the device, reducing energy consumption;

[0017] Since the types of screened materials are diverse, and the weights and diameters of the materials are different, when screening multiple materials simultaneously, the equipment on the vibrating screen production line is numerous, the input cost is very high and the energy consumption is also too high, resulting in a relatively high failure rate; thus, a jack assembly and a pad assembly are cooperatively arranged on the vibrating screen to realize the adjustment of the inclination angle of the vibrating screen. By pressing the handle of the jack assembly, the piston rod is jacked upward, thereby moving the vibrating screen upward to form a certain inclination angle. Then, the pad assembly is arranged under the support assembly, and the inclination angle of the vibrating screen is stabilized by placing the pads. Therefore, it is possible to screen multiple materials with a single device, reducing the input cost and energy consumption, being relatively convenient and facilitating the adjustment of the inclination angle of the overall device. At the same time, the pads are assembled pads. In this way, it is more convenient to disassemble and install the pads under the vibrating screen, making it more convenient to adjust the inclination angle of the device;

[0018] (2) A limiting part is provided to prevent the pads from sliding and falling due to the vibration of the device;

[0019] During the vibration process, due to the vibration of the sieve frame, the cushion block assembly will generate a certain vibration, which may cause the cushion block to move or fall off, resulting in the tipping of the vibrating screen. In this solution, a limiting part is provided to limit the cushion block. A spring column is arranged in the limiting part, and the cushion block is inserted onto the spring column to limit and fix the cushion block. At the same time, the cushion block itself is an assembled cushion block, and the cushion blocks arranged on both sides of the screw can be inserted into each other, so that the cushion block will not slide and cause a change in the inclination angle. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the first perspective of the present utility model;

[0021] Figure 2 It is a schematic structural diagram of the side view perspective of the present utility model;

[0022] Figure 3 It is a schematic structural diagram of the jack component of the present utility model;

[0023] Figure 4 It is a schematic structural diagram of the first perspective of the cushion block component of the present utility model;

[0024] Figure 5 It is a schematic structural diagram of the front view perspective of the cushion block component of the present utility model;

[0025] Figure 6 It is a schematic structural diagram of the half-sectional view of the cushion block component of the present utility model;

[0026] In the figure: 101 - base, 102 - sieve frame, 103 - sieve mesh, 104 - spring A, 105 - mounting seat, 106 - feed inlet, 107 - discharge outlet, 108 - motor mounting plate, 109 - vibration motor, 112 - motor protective cover, 113 - wire mesh frame;

[0027] 401 - chassis, 402 - mounting plate, 403 - mounting bracket B, 404 - screw, 405 - cushion block A, 406 - cushion block B, 407 - underframe, 408 - spring B, 409 - spring column, 410 - limit cover, 411 - handle part, 412 - cylinder barrel, 413 - piston rod, 414 - support upper plate, 415 - support lower plate, 416 - spring C, 417 - oil drain valve, 418 - lock nut. Detailed Embodiments

[0028] The following further describes the present utility model with reference to the drawings, but the protection scope of the present utility model is not limited to the following.

[0029] It should be noted that the orientation or positional relationship indicated by "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0030] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.

[0031] Therefore, based on the above problems, referring to Figure 1 , the present utility model proposes an angle adjustment mechanism for a vibrating screen to solve the problems.

[0032] (Embodiment 1)

[0033] Referring to Figures 1 to 6 , an angle adjustment mechanism for a vibrating screen proposed in this implementation scheme includes a base 101, a screen frame 102, a screen mesh 103, a support assembly, a vibration assembly, a jack assembly, and a cushion block assembly;

[0034] Among them, referring to Figure 1 , the base 101 is horizontally placed on the ground, a cushion block assembly is arranged on the base 101, and a support assembly and the screen frame 102 are arranged on the cushion block assembly;

[0035] Among them, referring to Figure 2 , the support assembly includes a spring A 104 and a mounting seat 105. One end of the spring A 104 is arranged on the cushion block assembly through a mounting plate 402, the other end is connected to the mounting seat 105, and the mounting seat 105 is fixedly connected to the screen frame 102. The screen frame 102 is suspended on the base 101 through the support assembly;

[0036] Among them, referring to Figure 1 , the screen mesh 103 is arranged in the screen frame 102. A feed inlet 106 and a discharge outlet 107 are respectively arranged in front of and behind the screen frame 102, and vibration assemblies are installed at the tops of the left and right sides of the screen frame 102;

[0037] Among them, referring to Figure 1 , the vibration assembly includes a vibration motor 109, an eccentric block, and a connecting shaft; an eccentric block is sleeved on the vibration motor 109, and the vibration motors 109 located on the left and right sides of the screen frame 102 are connected through the connecting shaft;

[0038] Among them, referring to Figures 4 to 6, the spacer assembly includes a mounting bracket B403, a screw 404, a spacer, and a limiting portion; the mounting bracket B403 is disposed on the base 101, the screw 404 passes through the mounting bracket B403 and can displace in the up and down directions on the mounting bracket B403, and the spacer is placed on the mounting bracket B403;

[0039] Among them, referring to Figures 5 to 6 , the limiting portion includes a bottom frame 407, a spring column 409, a spring B408, and a limiting cover 410; a mounting hole is formed in the mounting bracket B403, a pillar passes through the mounting hole and a bottom frame 407 is provided at the bottom end, the spring B408 is disposed on the bottom frame 407, one end thereof is connected to the bottom frame 407, and the other end is connected to the spring column 409. The spring column 409 is disposed in the through hole of the mounting bracket B403 and can telescopically move up and down in the mounting bracket B403, and a rotatable limiting cover 410 is sleeved on the top end of the pillar;

[0040] Among them, referring to Figure 3 , the jack assembly includes a chassis 401, a jack, and a handle portion 411; long plates are respectively disposed outwardly on the left and right sides of the front part of the bottom plate of the sieve frame 102, the jack assembly is disposed below the long plates, and the handle portion 411 is disposed beside the jack. By pressing the handle portion 411, the piston rod 413 of the jack is lifted;

[0041] During operation, the handle portion 411 in the jack is pressed, so that the piston rod 413 in the jack rises and abuts against the long plate on the sieve frame 102. After the vibrating screen is tilted at a certain angle, the spacer assembly is installed below the support assembly. The screw 404 is rotated to raise the screw 404, and the spacer is placed on the mounting bracket B403 and the spacer is limited by the limiting portion. At this time, the pressure is released to lower the piston rod 413 of the jack, and the spring C416 is tightened. The spacer assembly ensures that the adjusted angle of the vibrating screen remains unchanged, and the adjustment of the screening angle of the vibrating screen is completed.

[0042] This solution designs an angle adjustment mechanism for a vibrating screen. Since the angles of the screen meshes 103 of current vibrating screens are fixed, the materials to be screened usually vary in weight and diameter, and it is impossible to screen various different materials. Usually, other models of vibrating screens need to be used or the screen meshes 103 need to be removed and the positions of the screen meshes 103 in the vibrating frames are changed to change the screening angles, which is very inconvenient and time-consuming; this solution uses a jack and a cushion block assembly to tilt the angle of the vibrating screen to adjust the screening angle. After the vibrating screen can be adjusted to the required angle by the jack, the cushion block assembly is used to fix the tilted angle, and then vibrating screening is carried out; the cushion block assembly is arranged below the support assembly. After the screen frame 102 is lifted upward by a certain angle by the jack, the screw 404 is rotated so that the top of the screw 404 is in contact with the bottom of the spring A104 in the support assembly, and then the cushion block is placed on the mounting frame B403, and the cushion block is limited and fixed by the limiting part to prevent the cushion block from sliding during vibration, resulting in the overturning of the device.

[0043] In this embodiment, referring to Figure 1 and Figure 2 , for the design of the base 101, the base 101 is a rectangular frame, and four feet are vertically arranged downward at the four top corners of the frame, so that the base 101 is horizontally arranged on the ground.

[0044] In this embodiment, referring to Figure 1 , for the design of the screen mesh 103, the screen mesh 103 is installed in the screen frame 102, and a plurality of screen holes are provided in the screen mesh 103. The vibrating screen device itself is horizontally arranged, and the slope of the screen mesh 103 arranged in the screen frame 102 is 5° itself - that is, the screen mesh 103 is inclined downward by 5° from the feed port 106 to the discharge port 107 in the screen frame 102.

[0045] In this embodiment, referring to Figure 1 and Figure 2 , for the design of the support assembly, two support assemblies are respectively arranged on the outer sides of the left and right side plates of the screen frame 102, and the support assemblies on both sides are symmetrically arranged with each other - that is, there are a total of four support assemblies outside the screen frame 102, which are symmetrically arranged in pairs on the base 101. A support assembly includes three springs A104 and two closely attached mounting seats 105. The three springs A104 are closely arranged and vertically arranged on the mounting plate 402. One end of the spring A104 is connected to the mounting plate 402, and the other end is connected to the bottom surfaces of the two mounting seats 105; the mounting seat 105 is a right-angled triangle frame, and its short right-angled end surface is connected to the spring A104 - that is, the mounting seat 105 is arranged above the spring A104, and the long right-angled end surface of the mounting seat 105 is connected to the side plate of the screen frame 102 by screws. When the vibration motor 109 starts to drive the screen frame 102 to vibrate, it is set that the spring A104 can support and fix the screen frame 102 while not affecting the vibration of the screen frame 102.

[0046] In this embodiment, referring to Figure 1 , for the sieve frame 102, the sieve frame 102 includes a front plate, a rear plate, a left side plate, a right side plate, a discharge port 107 and a feed port 106; the lower parts of the left and right side plates are respectively fixedly connected to the corresponding support components, and at the same time, the left and right side plates are connected by a plurality of wire meshes 113; one side of the front plate is connected to the left side plate, and the other side is connected to the right side plate, and the height of the front plate is lower than the height of the left and right side plates. A feed port 106 is arranged above the front plate, and the feed port 106 is connected to one end of the sieve mesh 103. The material to be screened falls from the feed port 106 onto the sieve mesh 103. A rectangular notch is transversely opened on the rear plate, and the notch is opposite to the other end of the sieve mesh 103, and a discharge port 107 is arranged at the notch.

[0047] In this embodiment, referring to Figure 1 , for the vibration assembly, the vibration assembly includes a vibration motor 109, an eccentric block and a connecting shaft; the top ends of the two side plates of the sieve frame 102 are respectively fixedly connected to the motor mounting plates 108, the vibration motor 109 is arranged on the motor mounting plates 108, an eccentric block is connected to the motor shaft of the vibration motor 109, and the vibration motors 109 located on the left and right side plates are connected by a connecting shaft. After the vibration assembly is installed, the motor protective cover 112 is connected to the motor mounting plate 108 by screws to prevent impurities from entering the vibration motor 109 and causing damage.

[0048] In this embodiment, referring to Figure 2 and Figures 5 to 6 , for the design of the cushion block assembly; a threaded hole is opened in the center of the mounting frame B403, a screw rod 404 passes through the threaded hole, a disc is arranged at the top end of the screw rod 404, and by rotating the screw rod 404, the screw rod 404 can move up and down in the mounting frame B403. When the screw rod 404 moves upward, the disc abuts against the mounting plate 402 below the spring A104; a locking nut 418 is arranged on the lower surface of the mounting frame B403, and by rotating the locking nut 418, the screw rod 404 can be locked after it moves to a suitable position; the cushion block is rectangular in shape, and the cushion blocks are respectively cushion block A405 and cushion block B406. One end of the cushion block A405 is provided with a protrusion and a semi-circular hole is opened in the center. One end of the cushion block B406 is provided with a depression matching the cushion block A405 and also has a semi-circular hole opened. The cushion block A405 and the cushion block B406 are placed on the mounting frame B403. After they are inserted in a matching manner, the semi-circular holes opposite to each other in the center are adapted to the diameter of the screw rod 404.

[0049] In this embodiment, referring to Figure 6, for the limiting part; mounting holes are provided on both sides of the central threaded hole of the mounting bracket B403 (and avoiding the position where the cushion block is placed), the support column passes through the mounting holes, and the bottom frame 407 is provided at the bottom end of the support column. The bottom frame 407 is an L-shaped long plate, and a spring B408 is provided on the bottom frame 407. The other end of the spring B408 is connected to the spring column 409. The spring column 409 is inserted into the through hole of the mounting bracket B403 (the through hole is located between the mounting hole and the threaded hole). At the same time, a limiting cover 410 is sleeved on the top end of the support column, and the limiting cover 410 can rotate around the support column;

[0050] When the limiting cover 410 is rotated above the position of the spring column 409 and the limiting cover 410 is screwed to the mounting bracket B403, the spring column 409 is pressed into the through hole, and the spring B408 is compressed. When the screw on the limiting cover 410 is unscrewed and the limiting cover 410 is rotated in the opposite direction, the spring column 409 extends out of the through hole. Second through holes with the same diameter as the spring column 409 are opened on both the cushion block A405 and the cushion block B406. When the spring column extends out, the cushion block A405 and the cushion block B406 are inserted onto the spring columns 409 on the left and right sides, so as to limit and fix the cushion block A405 and the cushion block B406, and prevent the cushion block A405 and the cushion block B406 from shifting during vibration and causing the device to tip over.

[0051] In this embodiment, refer to Figure 1 and Figure 3 , for the jack assembly, long plates are respectively extended outward on the left and right sides of the front part of the bottom plate of the sieve frame 102. The jack assembly is arranged below the long plates and the jack is arranged facing the long plates. A handle part 411 is arranged on the side of the jack. By pressing down the handle, the piston rod 413 in the jack moves upward, so as to push the long plate upward. The support part in the jack assembly is arranged on the upper part of the jack. Both the support upper plate 414 and the support lower plate 415 are rectangular, and the support lower plate 415 is fixedly arranged on the upper surface of the cylinder barrel 412 of the jack. The support upper plate 414 is arranged above the jack. Four connection components are arranged at the four corner positions of the support upper plate 414 and the support lower plate 415. The upper ends of the connection components are provided with openings. Hooks are arranged at both ends of the spring C416. The hooks at both ends of the spring C416 are respectively connected with the connection components on the support upper plate 414 and the support lower plate 415. The support upper plate 414 and the support lower plate 415 can be automatically tightened through the spring C416, so that the support upper plate 414 is in contact with the top end of the piston rod 413, effectively avoiding the situation that when the oil drain valve 417 is turned, the pressure is relieved too quickly and the piston rod 413 tilts.

[0052] It should be noted that the jack adopted in this solution is a hydraulic jack, which is a prior art. The hydraulic jack mainly uses oil as the working medium, transfers motion through the change of the sealed volume, and is a jacking device that transfers power through the internal pressure of the oil. When the lever handle is lifted by hand, the small piston in the pump in the handle part 411 is driven upward. At this time, the volume in the pump increases to form partial vacuum, and under the action of the atmospheric pressure, the oil flows into the pump to complete the oil suction. When the lever handle is pressed down, the small piston is driven to move downward, the volume in the pump decreases, and the oil in it is squeezed out. The oil then enters the hydraulic cylinder (located in the jack) through the oil pipe. Since the hydraulic cylinder is also sealed, the force generated by the squeezed oil pushes the large piston upward, causing the connected piston rod 413 to rise and lift the heavy object. By repeatedly lifting and pressing the lever handle, the heavy object can be continuously lifted to achieve the purpose of lifting. When the large piston needs to move downward, the oil drain valve 417 is opened, and then under the action of the self-weight of the heavy object, the oil in the hydraulic cylinder flows back, and the large piston drops to its original position.

[0053] The utility model relates to an angle adjusting mechanism for a vibrating screen, which realizes the adjustment of the screening angle of the vibrating screen by setting a jack assembly and a cushion block assembly. First, the piston rod 413 is lifted by operating the pressing handle in the jack assembly to jack up the screen frame 102. Then, the screw rod 404 on the cushion block assembly is rotated to make the screw rod 404 rise. After the disc of the screw rod 404 abuts against the mounting plate 402 below the support assembly, the screw rod 404 is locked by the lock nut 418. Then, the cushion block A 405 and the cushion block B 406 are installed on the cushion block assembly. In addition to the protrusions and depressions on the cushion block A 405 and the cushion block B 406 that can cooperate with each other, the cushion blocks are also limited and fixed by the spring column 409 in the limiting part.

[0054] Currently, the inclination angle of the screen mesh 103 of the current vibrating screen is usually fixed. However, the materials to be screened usually vary in weight and diameter. When screening different types of materials, it is necessary to change the inclination angle of the screen mesh 103 to screen the materials faster and more accurately. Currently, due to the different types of materials to be screened by the vibrating screen, and their weights and diameters are different, therefore, the traditional vibrating screening production line has a large number of equipment, the input cost of the production line is relatively high, and the process is also relatively complex and cumbersome; resulting in high failure rate, high energy consumption, high operating cost, and large floor area. Since it is processed one by one in many equipment, the sand output rate is also very unsatisfactory; this solution uses a jack assembly and a cushion block assembly to adjust the inclination angle of the vibrating screen. The piston rod 413 of the jack pushes up the long plate of the screen frame 102 to tilt the screen frame 102. However, since the force-bearing area of the piston rod 413 at the top of the jack is relatively small and the force-bearing direction is not very stable, when the piston rod 413 rises and retracts, it is easy to deflect, resulting in damage to the jack, and there are certain safety problems during the working process. Therefore, in order to avoid these problems, a support part is provided on the jack. Through the support upper plate 414, the force-bearing area at the top of the jack becomes larger, which can ensure that the force on the top of the piston rod 413 is relatively uniform, thus avoiding the deflection of the jack when it rises. At the same time, a spring C416 is provided to cooperate with the support upper plate 414 and the support lower plate 415. Through the tightening action of the spring C416, the top of the piston rod 413 is in close contact with the support upper plate 414, thus avoiding the too-fast pressure relief caused by opening the oil drain valve 417 and resulting in the deflection and sliding of the piston rod 413, which may damage the jack; after this solution raises and tilts the device to an appropriate angle through the jack, a cushion block assembly is used to stabilize the inclination angle. To prevent the cushion blocks on the cushion block assembly from moving during vibration, which may cause the device to tip over or skew, resulting in unsuccessful screening, this solution realizes the fixation of the cushion blocks through the limit of the cushion blocks themselves and the limit part. The cushion blocks are divided into two left and right cushion blocks A405 and cushion blocks B406 that can be inserted into each other, and the spring column 409 in the limit part passes through the cushion blocks A405 and cushion blocks B406 to prevent the cushion blocks from shifting during vibration.

[0055] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An angle adjustment mechanism for a vibrating screen, comprising a base (101) and a screen frame (102). A screen mesh (103) is arranged inside the screen frame (102). The screen frame (102) is suspended on the base (101) via a support assembly. Vibration assemblies are further arranged on the left and right sides of the screen frame (102), and it is characterized in that: It also includes a jack assembly and a cushion block assembly; The cushion block assembly is placed between the support assembly and the base (101), and a detachable cushion block is provided on the cushion block assembly; The jack assembly is arranged below the sieve frame (102), and the sieve frame (102) is lifted by the piston rod (413) in the jack component; When starting to work, press the handle in the jack to lift the piston rod (413) to lift the sieve frame (102); after the sieve frame (102) is lifted to a certain angle, install a cushion block on the cushion block assembly, and then release the pressure to make the piston rod (413) descend to complete the adjustment of the inclination angle of the sieve frame (102).

2. The angle adjustment mechanism for a vibrating screen according to claim 1, characterized in that: The cushion block assembly includes a mounting bracket B (403) and a screw (404); the mounting bracket B (403) is arranged on the base (101) and the mounting bracket B (403) penetrates through the screw (404) that can move up and down, and at the same time, a locking nut (418) is provided to lock the screw (404); When the sieve frame (102) is lifted by the jack, rotate the screw (404) to make the screw (404) move upward to form a certain space between the support assembly and the upper surface of the mounting bracket B (403) for installing the cushion block.

3. The angle adjustment mechanism for a vibrating screen according to claim 2, characterized in that: The cushion blocks are divided into cushion block A (405) and cushion block B (406). The cushion block A (405) with a protrusion and the cushion block B (406) with a matching depression can be inserted into each other, and the cushion block A (405) and the cushion block B (406) are arranged on the mounting bracket B (403) in a mutually cooperative manner.

4. The angle adjustment mechanism for a vibrating screen according to claim 3, characterized in that: It also includes a limiting part; the limiting part includes a chassis (407), a spring B (408), and a spring column (409); one end of the spring B (408) is arranged on the chassis below the mounting bracket B (403), and the other end is connected to the spring column (409). The chassis (407) is provided with a support column upward and the support column penetrates through the mounting bracket B (403). A limiting cover (410) is arranged at the protruding end of the support column, and the limiting cover (410) can rotate around the support column.

5. The angle adjustment mechanism for a vibrating screen according to claim 1, characterized in that: The vibrating screen itself is horizontally arranged on the ground, and the sieve mesh (103) is arranged obliquely downward by 5° in the sieve frame (102) to facilitate screening of materials.

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