Linear vibrating screen

Abstract

The application discloses a linear vibration screen, and has the beneficial effects that the linear vibration theory is applied to optimal design, vibration parameters such as amplitude, frequency and exciting force are reasonably set according to screening process requirements and scientific test results, and the linear vibration screen is reliable and stable in power transmission and linear vibration force transmission through the connection of the rubber disc coupling, the spline transmission shaft and the driving mechanism. The surface of the crossbeam is coated with high-grade wear-resistant anticorrosive grease, and the crossbeam is more effectively protected from wear. The side plate is reasonable and beautiful in reinforcement, small in stress coefficient, large in rigidity and novel in appearance.

Description

Technical Field

[0001] This invention relates to the field of vibrating screen technology, and in particular to a linear vibrating screen. Background Technology

[0002] In recent years, with the rapid development of my country's economy and science and technology, higher requirements have been put forward for screening technology. There is an urgent need for screening equipment to develop towards high efficiency and large scale, and there is an urgent need for new linear screens with more advanced performance, more reliable operation, higher screening efficiency, larger processing capacity and longer service life. Summary of the Invention

[0003] The technical solution of the present invention to achieve the above objectives is as follows: a linear vibrating screen, comprising: a screen body, a vibrator, an intermediate shaft, a drive shaft, a motor, a belt drive, and a secondary shaft pair, wherein the vibrator is mounted on the screen body, the intermediate shaft is inserted into the inner side of the vibrator, the drive shaft is inserted into the vibrator, the secondary shaft pair is inserted into the vibrator, the belt drive is mounted on the motor and the secondary shaft pair, and the screen body is mounted on a screening structure;

[0004] The screening structure includes: several buffer springs and a sieve plate;

[0005] Several buffer springs are evenly installed on the outer side of the screen body, and the screen plate is installed on the inner side of the screen body.

[0006] Preferably, the screening structure includes: a plurality of buffer springs and a pair of sieve plates;

[0007] Several buffer springs are evenly installed on the outer side of the screen body, and a pair of screen plates are installed parallel to each other on the inner side of the screen body.

[0008] Preferably, the screening structure includes: a plurality of buffer springs and three sieve plates;

[0009] Several buffer springs are evenly installed on the outer side of the screen body, and three screen plates are evenly and parallelly installed on the inner side of the screen body.

[0010] Preferably, the screen body includes: a pair of side plates, several crossbeams, several excitation beams, several lifting beams, and a back plate;

[0011] A pair of side plates are respectively installed on both sides of a plurality of crossbeams and a plurality of excitation beams, a plurality of lifting beams are installed on a pair of side plates, and a back plate is installed on a pair of side plates.

[0012] Preferably, the vibrator comprises: a circular vibration housing, a pair of circular vibration bearing caps, a pair of circular vibration labyrinth baffles, a pair of circular vibration skeleton oil seals, a pair of circular vibration oil separators, a circular vibration stepped oil baffle, a pair of circular vibration bearings, a circular vibration oil baffle plate, a pair of circular vibration wear-resistant sleeves, a pair of circular vibration swing blocks, a circular vibration shaft, a pair of circular vibration swing block caps, a pair of circular vibration counterweight shafts, a pair of circular vibration elastic cylindrical pins, two pairs of circular vibration sealing gaskets, three circular vibration plugs, a circular vibration swing block key, a circular vibration breather connector, a circular vibration breather, and a pair of circular vibration swing block isolation sleeves;

[0013] The circular vibrating shaft penetrates the circular vibrating housing and is embedded inside it. A pair of circular vibrating oil-separating sleeves are fitted onto both ends of the circular vibrating bearings and press onto the pair of circular vibrating bearings. The circular vibrating stepped oil baffle is fitted onto the right end of the circular vibrating bearing and presses onto the right circular vibrating bearing. The circular vibrating oil baffle is fitted onto the left end of the circular vibrating bearing and presses onto the left circular vibrating bearing. A pair of circular vibrating wear-resistant sleeves are fitted onto both ends of the circular vibrating bearings and press onto the circular vibrating stepped oil baffle and the circular vibrating oil baffle. A pair of circular vibrating labyrinth baffles are embedded on the pair of circular vibrating bearing press covers. A pair of circular vibrating skeleton oil seals press onto the pair of circular vibrating labyrinth baffles. A pair of circular vibrating bearing press covers are fitted onto both ends of the circular vibrating bearings and fixedly installed on the openings at both ends of the circular vibrating housing. A pair of circular... The vibrating pendulum isolation sleeves are fitted onto both ends of the circular vibrating shaft. A pair of the circular vibrating pendulums are fixed at both ends of the circular vibrating bearing and secured by a pair of circular vibrating pendulum keys. A pair of the circular vibrating pendulum caps are embedded and fixed onto both ends of the circular vibrating bearing. A pair of the circular vibrating counterweight shafts are fixedly mounted on the pair of the circular vibrating pendulums by a pair of circular vibrating elastic cylindrical pins. The circular vibrating respirator is embedded on the upper end face of the circular vibrating housing. The circular vibrating respirator connector is installed above the circular vibrating respirator and connected to it. One of the two pairs of circular vibrating sealing gaskets is embedded above the circular vibrating respirator connector, and the other two pairs of circular vibrating sealing gaskets are embedded on the other three end faces of the circular vibrating housing. Three circular vibrating plugs are movably installed above the three circular vibrating sealing gaskets.

[0014] Preferably, the crossbeam includes: a vibrating screen circular tube crossbeam, a vibrating screen support bracket, a vibrating screen washer, a vibrating screen rivet, a vibrating screen connecting block, a vibrating screen spring, a vibrating screen locking block, and a protective plate.

[0015] The vibrating screen support brackets are respectively installed above the vibrating screen circular tube beam. The vibrating screen washers are respectively installed on the upper wall of the vibrating screen support brackets. The vibrating screen rivets fix the vibrating screen support brackets, vibrating screen washers and vibrating screen circular tube beam together. The vibrating screen connecting blocks are respectively fixedly installed above the vibrating screen circular tube beam. The vibrating screen springs are respectively fixedly installed in the grooves inside the vibrating screen connecting blocks. The vibrating screen locking blocks are fixedly installed on the vibrating screen springs. The protective plate is locked onto the vibrating screen support bracket through the elongated hole. The bottom end of the protective plate has a locking hole, and the vibrating screen locking blocks are locked onto the locking hole.

[0016] Preferably, the crossbeam comprises: a tension screen shaped tube, a tension screen casting, a tension screen flange, a tension screen support plate, and a tension screen angle steel;

[0017] The tension screen shaped tube is welded with a tension screen casting and a tension screen angle steel. A tension screen flange is welded to each end of the tension screen shaped tube. The tension screen support plate is welded to the tension screen flange and the tension screen shaped tube respectively. A tension screen reinforcing rib is welded between the tension screen angle steel and the tension screen casting. A tension screen reinforcing seat is provided at the connection position between the tension screen casting and the tension screen shaped tube. A positioning connection assembly is pre-installed on the tension screen flange. The positioning connection assembly includes a tension screen embedded nut and a tension screen positioning bolt. The tension screen embedded nut is welded into the tension screen flange hole of the tension screen flange. One end of the tension screen positioning bolt is screwed into the tension screen embedded nut. The surface of the new tension screen crossbeam is sprayed with a polyurethane coating.

[0018] Preferably, the excitation beam includes: an excitation beam top plate, an excitation beam bottom plate, a pair of excitation beam side plates, a pair of excitation beam flanges, two pairs of excitation beam cylindrical fixed shafts, four pairs of excitation beam damping spring columns, two pairs of excitation beam damping springs, four pairs of excitation beam connecting columns, two pairs of excitation beam scissor type supports, and four pairs of excitation beam scissor type auxiliary springs.

[0019] A pair of excitation beam side plates are horizontally and parallelly welded to a pair of excitation beam flanges. The top plate and bottom plate of the excitation beam are also welded to the pair of excitation beam flanges, with the top and bottom plates connected to the pair of excitation beam side plates at right angles. Two pairs of excitation beam cylindrical fixed shafts are respectively inserted into a pair of excitation beam side plates. Four pairs of excitation beam damping spring columns are respectively installed on two pairs of excitation beam cylindrical fixed shafts, and the four pairs of excitation beam damping springs... The other end of each spring column is mounted on the top plate of the excitation beam. The two pairs of excitation beam damping springs are respectively fitted onto the two pairs of excitation beam cylindrical fixed shafts. The four pairs of excitation beam connecting columns are respectively mounted on the two pairs of excitation beam damping springs, and the other end of each of the four pairs of excitation beam connecting columns is mounted on the top plate of the excitation beam. The two pairs of excitation beam scissor brackets are mounted on the two pairs of excitation beam cylindrical fixed shafts. The four pairs of excitation beam scissor auxiliary springs are respectively mounted on the two pairs of excitation beam scissor brackets.

[0020] The linear vibrating screen manufactured using the technical solution of this invention is optimized through linear vibration theory. Vibration parameters such as amplitude, frequency, and excitation force are rationally set according to screening process requirements and scientific experimental results, avoiding the natural frequencies of each stage of the screen body, reducing the negative impact of resonance forces on various parts of the screen body, improving the performance of the screen and extending its fatigue life. The side panels, main beams, crossbeams, and other structural components have high rigidity, high strength, reasonable and balanced stress distribution, and a large safety factor. The excitation beam and crossbeam structure has a unique design; all major welds are fully fused, undergoing first-level UT flaw detection inspection, and heat treatment completely eliminates welding stress. Precision machining is performed using a large CNC machining center. A professionally designed and finely manufactured box-type vibrator is installed on the vibrator main beam and connected to the drive mechanism via a rubber disc coupling and spline drive shaft, reliably and smoothly transmitting power and linear vibration force to the screen body. The crossbeam surface is coated with high-grade wear-resistant and anti-corrosion grease, effectively protecting the crossbeam from wear. The side plates have reasonable and aesthetically pleasing reinforcement, low stress coefficient, high rigidity, and a novel appearance. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of a single-layer screening structure of a linear vibrating screen according to the present invention.

[0022] Figure 2 This is a side sectional view of a single-layer screening structure of a linear vibrating screen according to the present invention.

[0023] Figure 3 This is a schematic diagram of the main structure of the double-layer screening structure of a linear vibrating screen according to the present invention.

[0024] Figure 4 This is a side sectional view of the double-layer screening structure of a linear vibrating screen according to the present invention.

[0025] Figure 5 This is a schematic diagram of the main structure of the three-layer screening structure of a linear vibrating screen according to the present invention.

[0026] Figure 6 This is a side sectional view of the three-layer screening structure of a linear vibrating screen according to the present invention.

[0027] Figure 7 This is a schematic diagram of the exciter structure of a linear vibrating screen according to the present invention.

[0028] Figure 8 This is a schematic diagram of the exciter structure of a linear vibrating screen according to the present invention.

[0029] Figure 9 This is a partially enlarged schematic diagram of the exciter of a linear vibrating screen according to the present invention.

[0030] Figure 10 This is a schematic front sectional view of the crossbeam (vibrating screen) of a linear vibrating screen according to the present invention.

[0031] Figure 11 This is a side sectional view of the crossbeam (vibrating screen) of a linear vibrating screen according to the present invention.

[0032] Figure 12 This is a top view schematic diagram of the crossbeam (vibrating screen) of a linear vibrating screen according to the present invention.

[0033] Figure 13 This is a top sectional view of the crossbeam (vibrating screen) of a linear vibrating screen according to the present invention.

[0034] Figure 14 This is a schematic front sectional view of the crossbeam (tension screen) of a linear vibrating screen according to the present invention.

[0035] Figure 15 This is a side sectional view of the crossbeam (tension screen) of a linear vibrating screen according to the present invention.

[0036] Figure 16 This is a side view cross-sectional structural diagram of the crossbeam (tension screen) AA position of a linear vibrating screen according to the present invention.

[0037] Figure 17 This is a partially enlarged schematic diagram of the crossbeam (tension screen) of a linear vibrating screen according to the present invention.

[0038] Figure 18 This is a schematic front sectional view of the excitation beam of a linear vibrating screen according to the present invention.

[0039] Figure 19 This is a side cross-sectional view of the excitation beam of a linear vibrating screen according to the present invention.

[0040] Figure 20 This is a schematic diagram of the excitation beam flange of a linear vibrating screen according to the present invention.

[0041] In the diagram: 1. Screen body; 2. Vibrator; 3. Intermediate shaft; 4. Drive shaft; 5. Motor; 6. Belt drive; 7. Secondary shaft pair; 8. Buffer spring; 9. Screen plate; A1. Vibrating screen round tube crossbeam; A2. Vibrating screen support bracket; A3. Vibrating screen washer; A4. Vibrating screen rivet; A5. Vibrating screen connecting block; A6. Vibrating screen spring; A7. Vibrating screen locking block; A8. Protective plate; B1. Tension screen special-shaped tube; B2. Tension screen casting; B 3. Tension screen flange; B4. Tension screen support plate; B5. Tension screen angle steel; B6. Reinforcing seat reinforcing rib; B7. Reinforcing seat reinforcing base; B8. Reinforcing seat embedded nut; B9. Reinforcing seat positioning bolt; C1. Vibration beam top plate; C2. Vibration beam bottom plate; C3. Vibration beam side plate; C4. Vibration beam flange; C5. Vibration beam stiffening plate; C6. Vibration beam double plate; C7. Vibration beam cylindrical fixed shaft; C8. Vibration beam damping spring column; C9. Vibration beam Shock-absorbing springs; C10, excitation beam connecting column; C11, excitation beam scissor-type bracket; C12, excitation beam scissor-type auxiliary spring; D1, circular vibrator housing; D2, circular vibrator bearing cap; D3, circular vibrator labyrinth baffle; D4, circular vibrator skeleton oil seal; D5, circular vibrator oil separator sleeve; D6, circular vibrator stepped oil baffle; D7, circular vibrator bearing; D8, circular vibrator oil baffle plate; D9, circular vibrator wear-resistant sleeve; D10, circular vibrator swing block; D11, circular... Vibration shaft; D12, circular vibration pendulum block cover; D13, circular vibration counterweight shaft; D14, circular vibration elastic cylindrical pin; D15, circular vibration sealing gasket; D16, circular vibration plug; D17, circular vibration pendulum block key; D18, circular vibration respirator connector; D19, circular vibration respirator; D20, circular vibration pendulum block isolation sleeve; D21, circular vibration first assembly fixing frame; D22, circular vibration second assembly fixing frame; D23, circular vibration connecting fixing bolt. Detailed Implementation

[0042] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without explaining the electrical control.

[0043] Example 1

[0044] like Figures 1-20As shown, the vibrator 2 is mounted on the screen body 1, the intermediate shaft 3 is inserted into the inner side of the vibrator 2, the drive shaft 4 is inserted into the vibrator 2, the auxiliary shaft 7 is inserted into the vibrator 2, the belt drive 6 is mounted on the motor 5 and the auxiliary shaft 7, and the screen body 1 is mounted on the screening structure.

[0045] Specifically, the screening structure includes: a plurality of buffer springs 8 and a sieve plate 9;

[0046] Specifically, several buffer springs 8 are evenly installed on the outer side of the screen body 1, and the screen plate 9 is installed on the inner side of the screen body 1.

[0047] In use, the drive mechanism motor 5 is powered on and rotates. The speed is adjusted by the belt drive mechanism 6. The driving force is transmitted to the drive shaft 4 through the auxiliary shaft 7, which drives the vibrator 2 to operate and generate linear vibration force. The linear vibration force acts on the screen body 1 in a continuous cycle, causing the screen body 1 to vibrate on the buffer spring 8. At the same time, the buffer spring 8 reduces the dynamic load of the screen body 1 on the screen machine support foundation. The screen body 1 drives the screen surface to vibrate synchronously, transmitting the force to the feed material on the screen. The impact feed material is thrown up and forward on the screen surface, compacted and layered, and screened and graded according to the specified particle size. The feed material is continuously fed from the feed chute to the receiving plate and buffered. It is screened through the screen surface. The undersize material is discharged into the undersize chute, and the oversize material is discharged into the discharge chute.

[0048] Example 2

[0049] like Figures 1-20 As shown, the screening structure includes: a plurality of buffer springs 8 and a pair of sieve plates 9;

[0050] Specifically, several buffer springs 8 are evenly installed on the outer side of the screen body 1, and a pair of screen plates 9 are installed in parallel on the inner side of the screen body 1.

[0051] In use, the drive mechanism motor 5 is powered on and rotates. The speed is adjusted by the belt drive mechanism 6. The driving force is transmitted to the drive shaft 4 through the auxiliary shaft 7, which drives the vibrator 2 to operate and generate linear vibration force. The linear vibration force acts on the screen body 1 in a continuous cycle, causing the screen body 1 to vibrate on the buffer spring 8. At the same time, the buffer spring 8 reduces the dynamic load of the screen body 1 on the screen machine support foundation. The screen body 1 drives the screen surface to vibrate synchronously, transmitting the force to the feed material on the screen. The impact feed material is thrown up and forward on the screen surface, compacted and layered, and screened and graded according to the specified particle size. The feed material is continuously fed from the feed chute to the receiving plate and buffered. It is screened through the double-layer screen surface. The undersize material is discharged into the undersize chute, and the oversize material is discharged into the discharge chute.

[0052] Example 3

[0053] like Figures 1-20As shown, the screening structure includes: several buffer springs 8 and three sieve plates 9;

[0054] Specifically, several buffer springs 8 are evenly installed on the outer side of the screen body 1, and three screen plates 9 are evenly and parallelly installed on the inner side of the screen body 1.

[0055] In use, the drive mechanism motor 5 is powered on and rotates. The speed is adjusted by the belt drive mechanism 6. The driving force is transmitted to the drive shaft 4 through the auxiliary shaft 7, which drives the vibrator 2 to operate and generate linear vibration force. The linear vibration force acts on the screen body 1 in a continuous cycle, causing the screen body 1 to vibrate on the buffer spring 8. At the same time, the buffer spring 8 reduces the dynamic load of the screen body 1 on the screen machine support foundation. The screen body 1 drives the screen surface to vibrate synchronously, transmitting the force to the feed material on the screen. The impact feed material is thrown up and forward on the screen surface, compacted and layered, and screened and graded according to the specified particle size. The feed material is continuously fed from the feed chute to the receiving plate and buffered. It is screened through three layers of screen surface. The undersize material is discharged into the undersize chute, and the oversize material is discharged into the discharge chute.

[0056] Example 4

[0057] like Figures 1-20 As shown, the screen body 1 includes: a pair of side plates, several crossbeams, several excitation beams, several lifting beams, and a back plate;

[0058] Specifically, a pair of side plates are respectively installed on both sides of several crossbeams and several excitation beams, several lifting beams are installed on a pair of side plates, and the back plate is installed on a pair of side plates.

[0059] In use, all components are made of high-quality structural steel with precision manufacturing. The crossbeams, vibration beams, and lifting beams undergo heat treatment after welding and are machined using advanced CNC machine tools. Then, high-quality ring groove rivets are used, and advanced clean and sealed assembly processes are employed to rivet the screen body 1. The side plates are seamless, and the crossbeams and vibration beams have high section moduli and rigidity. The crossbeam surface is coated with wear-resistant grease, and the screen body 1, after achieving Sa2.5 surface treatment, is sprayed with polyester protective paint. Each process in the manufacturing and assembly of the screen body 1 undergoes rigorous inspection and quality control. The screen body 1's structure is optimized for lightweight operation. Under high-load, high-frequency vibration conditions, the screen body 1 can prevent component cracking and wear, exhibiting higher fatigue resistance, reliability, and service life.

[0060] Example 5

[0061] like Figures 1-20As shown, the vibrator 2 includes: a circular vibration housing D1, a pair of circular vibration bearing covers D2, a pair of circular vibration labyrinth baffles D3, a pair of circular vibration skeleton oil seals D4, a pair of circular vibration oil separators D5, a circular vibration stepped oil baffle D6, a pair of circular vibration bearings D7, a circular vibration oil baffle plate D8, a pair of circular vibration wear-resistant sleeves D9, a pair of circular vibration swing blocks D10, a circular vibration shaft D11, a pair of circular vibration swing block covers D12, a pair of circular vibration counterweight shafts D13, a pair of circular vibration elastic cylindrical pins D14, two pairs of circular vibration sealing gaskets D15, three circular vibration plugs D16, a circular vibration swing block key D17, a circular vibration breather D19 connector D18, a circular vibration breather D19, and a pair of circular vibration swing block isolation sleeves D20;

[0062] Specifically, the circular vibrating shaft D11 penetrates the circular vibrating housing D1 and is embedded inside it. A pair of circular vibrating bearings D7 are fitted on both sides of the circular vibrating bearings D7. A pair of circular vibrating oil-separating sleeves D5 are fitted on both ends of the circular vibrating bearings D7 and press onto the pair of circular vibrating bearings D7. The circular vibrating stepped oil baffle D6 is fitted on the right end of the circular vibrating bearing D7 and presses onto the right side of the circular vibrating bearing D7. The circular vibrating oil baffle D8 is fitted on the left end of the circular vibrating bearing D7 and presses onto the left side of the circular vibrating bearing D7. A pair of circular vibrating wear-resistant sleeves D9 are fitted on both ends of the circular vibrating bearings D7 and press onto the circular vibrating stepped oil baffle D6 and the circular vibrating oil baffle D8. A pair of circular vibrating labyrinth baffles D3 are embedded on a pair of circular vibrating bearing covers D2. A pair of circular vibrating skeleton oil seals D4 press onto a pair of circular vibrating labyrinth baffles D3. A pair of circular vibrating bearing covers D2 are fitted on both ends of the circular vibrating bearings D7 and fixedly installed on the openings at both ends of the circular vibrating housing D1. The circular vibrating pendulum isolation sleeve D20 is fitted onto both ends of the circular vibrating shaft D11. A pair of circular vibrating pendulum blocks D10 are fitted and fixed at both ends of the circular vibrating bearing D7 and secured by a pair of circular vibrating pendulum block keys D17. A pair of circular vibrating pendulum block covers D12 are embedded and fixed on both ends of the circular vibrating bearing D7. A pair of circular vibrating counterweight shafts D13 are fixedly mounted on the pair of circular vibrating pendulum blocks D10 by a pair of circular vibrating elastic cylindrical pins D14. The circular vibrating respirator D19 is embedded on the upper end face of the circular vibrating housing D1. The circular vibrating respirator D19 connector D18 is installed above the circular vibrating respirator D19 and connected to the circular vibrating respirator D19. One of the two pairs of circular vibrating sealing gaskets D15 is embedded above the circular vibrating respirator D19 connector D18, and the two pairs of circular vibrating sealing gaskets D15 are embedded on the other three end faces of the circular vibrating housing D11. Three circular vibrating plugs D16 are movably installed above the three circular vibrating sealing gaskets D15.

[0063] During use, when installing the circular vibration exciter 2, the circular vibration shaft D11 is embedded and fixed inside the circular vibration housing D1, and a pair of circular vibration bearings D7 are fitted onto the circular vibration bearings D7 to allow the circular vibration bearings D7 to rotate. The circular vibration stepped oil baffle D6, the circular vibration oil baffle plate D8, and the circular vibration oil separator sleeve D5 are installed. The circular vibration bearing cover D2, which contains the circular vibration skeleton oil seal D4 and the circular vibration labyrinth baffle D3, is fixed to the circular vibration housing D11 via the circular vibration shaft D11 to prevent gear oil leakage and maintain sealing. Circular vibration pendulums are fitted onto both ends of the circular vibration bearings D7. Block D10 utilizes different arrangements of the circular vibrating counterweight shaft D13 to obtain different excitation forces. The circular vibrating block D10 is fixed with the circular vibrating block cover D12. The circular vibrating block isolation sleeve D20 is used to prevent the circular vibrating block D10 from scratching the circular vibrating housing D1. The circular vibrating sealing gasket D15, the circular vibrating breather D19, the connector D18, and the circular vibrating breather D19 are installed in the threaded hole on the upper end face of the circular vibrating housing D1. The other end face threaded holes are tightened with the circular vibrating sealing gasket D15 and the circular vibrating plug D16. Gear oil of the specified grade and quantity is injected and tested to pass before use.

[0064] Example 6

[0065] like Figures 1-20 As shown, the crossbeam includes: a vibrating screen circular tube crossbeam A1, a vibrating screen support bracket A2, a vibrating screen washer A3, a vibrating screen rivet A4, a vibrating screen connecting block A5, a vibrating screen spring A6, a vibrating screen locking block A7, and a protective plate A8.

[0066] Specifically, the vibrating screen support bracket A2 is installed above the vibrating screen circular tube beam A1, the vibrating screen washers A3 are installed on the upper wall of the vibrating screen support bracket A2, the vibrating screen rivets A4 fix the vibrating screen support bracket A2, the vibrating screen washers A3 and the vibrating screen circular tube beam A1 together, the vibrating screen connecting blocks A5 are fixedly installed above the vibrating screen circular tube beam A1, the vibrating screen springs A6 are fixedly installed in the grooves inside the vibrating screen connecting blocks A5, the vibrating screen locking blocks A7 are fixedly installed on the vibrating screen springs A6, the protective plate A8 is locked onto the vibrating screen support bracket A2 through the elongated hole, the bottom end of the protective plate A8 has a locking hole, and the vibrating screen locking blocks A7 are locked onto the locking hole.

[0067] In use, the crossbeam adopts the circular tube crossbeam A1 of the vibrating screen. The circular tube design facilitates material passage and prevents the accumulation of sticky materials. The circular tube has no weld seams and is fixed with vibrating screen rivets A4. The structure has high rigidity, high strength, reasonable and balanced stress distribution, high safety factor, and compact structure. The mating surfaces of the vibrating screen circular tube crossbeam A1 are precision machined by CNC machine tools before assembly, effectively ensuring the overall assembly quality of the screen. The vibrating screen support bracket A2 adopts a casting structure design and undergoes annealing treatment after casting. High-quality vibrating screen rivets A4 are selected. Advanced clean and sealed assembly technology is used to secure the screen. The body 11 is riveted to prevent cracking and wear under high load and high frequency vibration, resulting in higher fatigue resistance, reliability and service life. The protective plate A8 can protect the vibrating screen support bracket A2 to a certain extent, preventing the vibrating screen support bracket A2 from being easily deformed due to excessive force. Furthermore, the vibrating screen spring A6 allows the vibrating screen locking block A7 to be easily locked into the locking hole at the bottom of the protective plate A8, making the installation of the protective plate A8 and the vibrating screen connecting block A5 more convenient and facilitating the installation and fixation of the protective plate A8.

[0068] Example 7

[0069] like Figures 1-20 As shown, the crossbeam includes: a tension screen shaped tube B1, a tension screen casting B2, a tension screen flange B3, a tension screen support plate B4, and a tension screen angle steel B5.

[0070] Specifically, a tension screen casting B2 and a tension screen angle steel B5 are welded onto the tension screen shaped tube B1. A tension screen flange B3 is welded to each end of the tension screen shaped tube B1. The tension screen support plate B4 is welded to the tension screen flange B3 and the tension screen shaped tube B1 respectively. A tension screen reinforcing rib is welded between the tension screen angle steel B5 and the tension screen casting B2. A tension screen reinforcing seat is provided at the connection position between the tension screen casting B2 and the tension screen shaped tube B1. A positioning connection assembly is pre-set on the tension screen flange B3. The positioning connection assembly includes a tension screen pre-embedded nut and a tension screen positioning bolt. The tension screen pre-embedded nut is welded into the tension screen flange B3 hole. One end of the tension screen positioning bolt is screwed into the tension screen pre-embedded nut. The surface of the new tension screen crossbeam is sprayed with a polyurethane coating.

[0071] During use, the surface of the new type of tension screen crossbeam is coated with polyurethane. It adopts an integral tension screen shaped tube B1 material design, with all major welds fully fused. It undergoes first-level UT and magnetic particle testing, and heat treatment to eliminate welding stress. Two tension screen support plates B4 are welded to each end of the crossbeam, resulting in high structural rigidity, high strength, reasonable and balanced stress distribution, and a high safety factor. Positioning connection components are pre-installed on the tension screen flange B3. Pre-embedded nuts and positioning bolts are fixed to one end of the crossbeam, effectively preventing the inability to find the corresponding positioning bolts during installation, thus improving assembly efficiency. To improve efficiency, the crossbeam mating surfaces are precision-machined using CNC machine tools before assembly, effectively ensuring the overall assembly quality of the screening machine. The crossbeam surface is treated with a unique polyurethane spraying process, making it resistant to erosion and corrosion. The cross-sectional structure of the aforementioned tension screen shaped tube B1 is larger at the top and smaller at the bottom. The angle between the straight part of the tension screen shaped tube B1 and the inclined plane is 120°, and the radius of the arc part is 50mm. This design facilitates material passage and prevents the accumulation of sticky materials.

[0072] Example 8

[0073] like Figures 1-20 As shown, the excitation beam includes: an excitation beam top plate C1, an excitation beam bottom plate C2, a pair of excitation beam side plates C3, a pair of excitation beam flanges C4, two pairs of excitation beam cylindrical fixed shafts C7, four pairs of excitation beam damping spring columns C8, two pairs of excitation beam damping springs C9, four pairs of excitation beam connecting columns C10, two pairs of excitation beam scissor-type brackets C11, and four pairs of excitation beam scissor-type auxiliary springs C12.

[0074] Specifically, a pair of excitation beam side plates C3 are horizontally and parallelly welded to a pair of excitation beam flanges C4. The excitation beam top plate C1 and excitation beam bottom plate C2 are also welded to a pair of excitation beam flanges C4, with the top plate C1 and bottom plate C2 connected to the pair of excitation beam side plates C3 at right angles. Two pairs of excitation beam cylindrical fixing shafts C7 are respectively inserted into a pair of excitation beam side plates C3. Four pairs of excitation beam damping spring columns C8 are respectively installed on two pairs of excitation beam cylindrical fixing shafts C7, and the four pairs of excitation beam damping springs... The other end of column C8 is respectively installed on the top plate C1 of the excitation beam. The two pairs of excitation beam damping springs C9 are respectively fitted on the two pairs of excitation beam cylindrical fixed shafts C7. The four pairs of excitation beam connecting columns C10 are respectively installed on the two pairs of excitation beam damping springs C9, and the other end of the four pairs of excitation beam connecting columns C10 is respectively installed on the top plate C1 of the excitation beam. The two pairs of excitation beam scissor brackets C11 are installed on the two pairs of excitation beam cylindrical fixed shafts C7. The four pairs of excitation beam scissor auxiliary springs C12 are respectively installed on the two pairs of excitation beam scissor brackets C11.

[0075] In use, a box structure is assembled from one excitation beam top plate C1, one excitation beam bottom plate C2, two excitation beam side plates C3, and two excitation beam flanges C4. Two excitation beam double plates C6 are fixed on each side of the excitation beam top plate C1. Excitation beam stiffening plates C5 are welded to the outer sides of the box excitation beam side plates C3 at corresponding positions with the excitation beam double plates C6 and at the middle position of the box. All major welds are fully fused and subjected to first-level UT flaw detection and magnetic particle flaw detection. Heat treatment is then performed to eliminate welding stress. The structure has high rigidity, high strength, reasonable and balanced stress distribution, and a large safety factor. The excitation beam bottom plate C2 adopts a beveled edge design to prevent material accumulation and extend service life. The mating surfaces of the excitation beams are precision machined using CNC machine tools before assembly, effectively ensuring the overall assembly quality of the screening machine. High-quality bolts are selected, and advanced clean sealing assembly technology is used to tighten the screen body 1 to the specified tightening torque. It can avoid cracking and wear under high-load, high-frequency vibration conditions, exhibiting higher fatigue resistance, reliability, and service life. Based on long-term production practice and improvements made through finite element stress analysis, the design and manufacturing conform to GB mechanical design standards, JB / T9022-1999 [Vibrating Screen Design Specification], JB / T5496-2004 [General Technical Conditions for Vibrating Screen Manufacturing], and relevant coal preparation machinery industry standards. When the top plate C1 of the excitation beam and a pair of excitation beam side plates C3 are subjected to external forces, the external forces are transmitted to the four pairs of excitation beam damping spring columns C8 and the four pairs of excitation beam connecting columns C10, and then to the two pairs of excitation beams through the four pairs of excitation beam connecting columns C10. The vibration damping spring C9, made of elastic material, deforms under external force and returns to its original shape after the external force is removed. It converts the external force into the elastic deformation of the four pairs of vibration damping spring columns C8 and the two pairs of vibration damping springs C9. The external force is consumed by the elastic deformation. After the external force is consumed, the external force absorbed by the deformation of the four pairs of vibration damping spring columns C8 and the two pairs of vibration damping springs C9 is released through elastic deformation, thus preventing the vibration top plate C1 and the pair of vibration side plates C3 from deforming under external force.

[0076] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A linear vibrating screen, comprising: The screen body, vibrator, intermediate shaft, drive shaft, motor, belt drive, and auxiliary shaft assembly are characterized in that the vibrator is mounted on the screen body, the intermediate shaft is inserted into the inner side of the vibrator, the drive shaft is inserted into the vibrator, the auxiliary shaft assembly is inserted into the vibrator, the belt drive is mounted on the motor and the auxiliary shaft assembly, and the screen body is mounted on a screening structure. The screening structure includes: several buffer springs and a sieve plate; Several buffer springs are evenly installed on the outer side of the screen body, and the screen plate is installed on the inner side of the screen body; The screen body includes several excitation beams, each excitation beam comprising: an excitation beam top plate, an excitation beam bottom plate, a pair of excitation beam side plates, a pair of excitation beam flanges, two pairs of excitation beam cylindrical fixed shafts, four pairs of excitation beam damping spring columns, two pairs of excitation beam damping springs, four pairs of excitation beam connecting columns, two pairs of excitation beam scissor-type supports, and four pairs of excitation beam scissor-type auxiliary springs. A pair of excitation beam side plates are horizontally and parallelly welded to a pair of excitation beam flanges. The top plate and bottom plate of the excitation beam are also welded to the pair of excitation beam flanges, with the top and bottom plates connected to the pair of excitation beam side plates at right angles. Two pairs of excitation beam cylindrical fixed shafts are respectively inserted into a pair of excitation beam side plates. Four pairs of excitation beam damping spring columns are respectively installed on two pairs of excitation beam cylindrical fixed shafts, and the four pairs of excitation beam damping springs... The other end of each spring column is mounted on the top plate of the excitation beam. The two pairs of excitation beam damping springs are respectively fitted onto the two pairs of excitation beam cylindrical fixed shafts. The four pairs of excitation beam connecting columns are respectively mounted on the two pairs of excitation beam damping springs, and the other end of each of the four pairs of excitation beam connecting columns is mounted on the top plate of the excitation beam. The two pairs of excitation beam scissor brackets are mounted on the two pairs of excitation beam cylindrical fixed shafts. The four pairs of excitation beam scissor auxiliary springs are respectively mounted on the two pairs of excitation beam scissor brackets.

2. A linear vibrating screen according to claim 1, characterized in that, The screening structure includes: several buffer springs and a pair of sieve plates; Several buffer springs are evenly installed on the outer side of the screen body, and a pair of screen plates are installed parallel to each other on the inner side of the screen body.

3. A linear vibrating screen according to claim 1, characterized in that, The screening structure includes: several buffer springs and three sieve plates; Several buffer springs are evenly installed on the outer side of the screen body, and three screen plates are evenly and parallelly installed on the inner side of the screen body.

4. A linear vibrating screen according to claim 1, characterized in that, The screen body also includes: a pair of side plates, several crossbeams, several lifting beams, and a back plate; A pair of side plates are respectively installed on both sides of a plurality of crossbeams and a plurality of excitation beams, a plurality of lifting beams are installed on a pair of side plates, and a back plate is installed on a pair of side plates.

5. A linear vibrating screen according to claim 1, characterized in that, The vibrator comprises: a circular vibrating housing, a pair of circular vibrating bearing caps, a pair of circular vibrating labyrinth baffles, a pair of circular vibrating skeleton oil seals, a pair of circular vibrating oil separators, a circular vibrating stepped oil baffle, a pair of circular vibrating bearings, a circular vibrating oil baffle plate, a pair of circular vibrating wear-resistant sleeves, a pair of circular vibrating swing blocks, a circular vibrating shaft, a pair of circular vibrating swing block caps, a pair of circular vibrating counterweight shafts, a pair of circular vibrating elastic cylindrical pins, two pairs of circular vibrating sealing gaskets, three circular vibrating plugs, a circular vibrating swing block key, a circular vibrating breather connector, a circular vibrating breather, and a pair of circular vibrating swing block isolation sleeves; The circular vibrating shaft penetrates the circular vibrating housing and is embedded inside it. A pair of circular vibrating oil-separating sleeves are fitted onto both ends of the circular vibrating bearings and press onto the pair of circular vibrating bearings. The circular vibrating stepped oil baffle is fitted onto the right end of the circular vibrating bearing and presses onto the right circular vibrating bearing. The circular vibrating oil baffle is fitted onto the left end of the circular vibrating bearing and presses onto the left circular vibrating bearing. A pair of circular vibrating wear-resistant sleeves are fitted onto both ends of the circular vibrating bearings and press onto the circular vibrating stepped oil baffle and the circular vibrating oil baffle. A pair of circular vibrating labyrinth baffles are embedded on the pair of circular vibrating bearing press covers. A pair of circular vibrating skeleton oil seals press onto the pair of circular vibrating labyrinth baffles. A pair of circular vibrating bearing press covers are fitted onto both ends of the circular vibrating bearings and fixedly installed on the openings at both ends of the circular vibrating housing. A pair of circular... The vibrating pendulum isolation sleeves are fitted onto both ends of the circular vibrating shaft. A pair of the circular vibrating pendulums are fixed at both ends of the circular vibrating bearing and secured by a pair of circular vibrating pendulum keys. A pair of the circular vibrating pendulum caps are embedded and fixed onto both ends of the circular vibrating bearing. A pair of the circular vibrating counterweight shafts are fixedly mounted on the pair of the circular vibrating pendulums by a pair of circular vibrating elastic cylindrical pins. The circular vibrating respirator is embedded on the upper end face of the circular vibrating housing. The circular vibrating respirator connector is installed above the circular vibrating respirator and connected to it. One of the two pairs of circular vibrating sealing gaskets is embedded above the circular vibrating respirator connector, and the other two pairs of circular vibrating sealing gaskets are embedded on the other three end faces of the circular vibrating housing. Three circular vibrating plugs are movably installed above the three circular vibrating sealing gaskets.

6. A linear vibrating screen according to claim 4, characterized in that, The crossbeam includes: a vibrating screen round tube crossbeam, a vibrating screen support bracket, a vibrating screen washer, a vibrating screen rivet, a vibrating screen connecting block, a vibrating screen spring, a vibrating screen locking block, and a protective plate. The vibrating screen support brackets are respectively installed above the vibrating screen circular tube beam. The vibrating screen washers are respectively installed on the upper wall of the vibrating screen support brackets. The vibrating screen rivets fix the vibrating screen support brackets, vibrating screen washers and vibrating screen circular tube beam together. The vibrating screen connecting blocks are respectively fixedly installed above the vibrating screen circular tube beam. The vibrating screen springs are respectively fixedly installed in the grooves inside the vibrating screen connecting blocks. The vibrating screen locking blocks are fixedly installed on the vibrating screen springs. The protective plate is locked onto the vibrating screen support bracket through the elongated hole. The bottom end of the protective plate has a locking hole, and the vibrating screen locking blocks are locked onto the locking hole.

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