Screen mesh tensioning device of vibrating screen

Abstract

The utility model provides a vibrating screen mesh tensioning device which comprises a tensioning beam which is formed by modularly welding a preformed flange plate, a seat plate, a hollow rectangular pipe and a guide plate. The flange plates are welded to the two ends of the hollow rectangular pipe respectively, the base plate is perpendicularly fixed to the surface of the hollow rectangular pipe and integrally welded to the material guide plate, and the flange plates are detachably connected with side plates of the vibrating screen. The multiple elastic tensioning assemblies are sequentially arranged on the tensioning beam in the extending direction of the tensioning beam. The elastic tensioning assembly comprises an elastic body and a tension adjusting assembly, the tension adjusting assembly is connected with a screen mesh of the vibrating screen, and adjustable tensioning force is generated by compressing the elastic body so as to fix the screen mesh. According to the structure, the dynamic load and energy consumption of the screen body can be remarkably reduced, and light weight is achieved while the bearing capacity is guaranteed. The tensioning force is dynamically adjusted by compressing the elastic body, so that the screen is always in an elastic deformation range, looseness caused by plastic deformation is avoided, and the screen is more stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of multi-layer linear vibrating screen of asphalt mixing plant, and particularly relates to a vibrating screen mesh tensioning device. BACKGROUND

[0002] The asphalt concrete mixing plant is a core equipment for producing asphalt concrete, and a vibrating screen is used for aggregate grading and screening. The vibrating screen is usually fixed on one side and connected with a mesh tensioning structure on the other side. The reliability of the mesh tensioning structure directly affects the quality of finished products. The traditional mesh tensioning structure of the vibrating screen is a tensioning beam welded as a whole. However, this structure is relatively bulky. The traditional tensioning beam is made of a solid beam or multiple steel plates welded together, which is heavy, resulting in an increase in dynamic load of the screen body and an increase in energy consumption. In addition, there is a risk of tensioning failure. Long-term vibration can cause plastic deformation or cracking of the welding seam of the tensioning beam, resulting in loosening of the mesh and mixing of materials in the bin. CONTENT OF THE UTILITY MODEL

[0003] In view of the above defects or deficiencies in the prior art, the present application aims to provide a vibrating screen mesh tensioning device, which comprises:

[0004] A tensioning beam is composed of a preformed flange plate, a seat plate, a hollow rectangular tube and a material guide plate through modular welding. The two ends of the hollow rectangular tube are welded with flange plates, the seat plate is fixed vertically on the surface of the hollow rectangular tube, and the seat plate is integrally welded with the material guide plate. The flange plate is detachably connected with the side plate of the vibrating screen.

[0005] A plurality of elastic tensioning components are arranged on the tensioning beam in sequence along the extension direction of the tensioning beam. The elastic tensioning component comprises an elastic body and a tension adjusting component. The tension adjusting component is connected with the mesh of the vibrating screen and generates adjustable tensioning force by compressing the elastic body to fix the mesh.

[0006] According to the technical scheme provided by the embodiment of the present application, the elastic body is a compression spring, and the two ends of the compression spring are fixed in the compression spring seat. One side of the compression spring seat abuts against the seat plate.

[0007] According to the technical scheme provided by the embodiment of the present application, the tension adjusting component comprises a threaded pull rod and a nut. One end of the threaded pull rod is connected with the mesh, and the other end of the threaded pull rod penetrates through the compression spring seat and extends to the outside of the tensioning beam. The nut is screwed on the extended end of the threaded pull rod. The side of the compression spring seat away from the seat plate abuts against the nut. The tensioning force is controlled by adjusting the screwing depth of the nut to compress the compression spring.

[0008] According to the technical scheme provided by the embodiment of the present application, the tension adjusting assembly further comprises a sheath, the sheath comprises a nut matched with the thread of the threaded pull rod and a hollow sleeve protecting the thread of the threaded pull rod, one end of the hollow sleeve is closed, the sheath is screwed on the extended end of the threaded pull rod, and the inner diameter of the hollow sleeve is larger than the outer diameter of the thread of the threaded pull rod.

[0009] According to the technical scheme provided by the embodiment of the present application, the seat plate is arranged on one side surface of the hollow rectangular tube close to the vibrating screen, and the seat plate comprises a plurality of square plates corresponding to each elastic tensioning assembly.

[0010] According to the technical scheme provided by the embodiment of the present application, the height of the seat plate is higher than that of the hollow rectangular tube, and a first through hole is arranged on the area of the seat plate higher than the hollow rectangular tube, and the first through hole is used for avoiding the threaded pull rod.

[0011] According to the technical scheme provided by the embodiment of the present application, one end of the threaded pull rod is connected with the screen mesh through a pull net hook.

[0012] According to the technical scheme provided by the embodiment of the present application, the pull net hook comprises a connecting plate connected with the threaded pull rod and a bent plate integrally formed with the connecting plate, the bent plate is formed with a first groove, one side edge of the screen mesh is provided with a screen mesh end hook, and the screen mesh end hook is embedded in the first groove.

[0013] According to the technical scheme provided by the embodiment of the present application, the connecting plate abuts against the upper surface of the hollow rectangular tube.

[0014] According to the technical scheme provided by the embodiment of the present application, the material guide plate is perpendicular to the seat plate, and the material guide plate is a wear-resistant plate.

[0015] Compared with the prior art, the utility model has the advantages that the hollow rectangular tube is modularly welded with the preformed flange plate, the seat plate and the material guide plate, the weight is reduced by 20%-30% compared with the traditional solid beam, the dynamic load and energy consumption of the screen body are significantly reduced, the light weight is realized while the bearing capacity is ensured, the elastic tensioning assembly dynamically adjusts the tensioning force by compressing the elastic body, the screen mesh is always in the elastic deformation range, and loosening caused by plastic deformation is avoided, the tension adjusting assembly supports rapid fine adjustment, different working conditions are adapted, and the screening accuracy is ensured. The modular welding design reduces the number of welds by more than 50%, the welding area is concentrated (only the connection positions of the flange plate and the hollow rectangular tube, the hollow rectangular tube and the seat plate, and the seat plate and the material guide plate), the deformation amount is controlled within 2 mm, and no additional correction is needed; the preformed assembly supports batch production, and the processing and assembly costs are reduced. The flange plate and the side plate are detachably connected (screwed), the whole tensioning beam is convenient to disassemble and assemble, the elastic tensioning assembly adopts standardized design, damaged parts can be replaced individually, and downtime is reduced.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure diagram of a vibrating screen mesh tensioning device provided by an embodiment of the present application is shown in the figure.

[0017] Figure 2 A structure diagram of a tensioning beam provided by an embodiment of the present application is shown in the figure.

[0018] Figure 3 A structure diagram of a mesh pulling hook and a threaded pull rod provided by an embodiment of the present application is shown in the figure.

[0019] Figure 4 A side view structure diagram of a vibrating screen mesh tensioning device provided by an embodiment of the present application is shown in the figure.

[0020] The text annotations in the figure represent:

[0021] 1, tensioning beam; 2, compression spring; 3, compression spring seat; 4, adjusting nut; 5, sheath; 6, mesh pulling hook; 7, flange plate; 8, seat plate; 9, hollow rectangular tube; 10, material guide plate; 11, bent plate; 12, threaded pull rod. DETAILED DESCRIPTION

[0022] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related application, and not to limit the application. In addition, it should be noted that only the parts related to the application are shown in the drawings for ease of description.

[0023] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0024] Embodiment 1

[0025] As mentioned in the background, in view of the problems in the prior art, the present application proposes a vibrating screen mesh tensioning device, as shown in Figure 1 , 4 , comprising:

[0026] a tensioning beam 1, which is composed of a preformed flange plate 7, a seat plate 8, a hollow rectangular tube 9 and a material guide plate 10 by modular welding; the two ends of the hollow rectangular tube 9 are respectively welded with the flange plate 7, the seat plate 8 is fixed vertically on the surface of the hollow rectangular tube 9, and is integrally welded with the material guide plate 10, and the flange plate 7 is detachably connected with the side plate of the vibrating screen; wherein the hollow rectangular tube 9 can be made of high-strength low-alloy steel (such as Q345B) with a wall thickness of 3-5 mm, which realizes lightweight while ensuring bearing capacity.

[0027] Multiple elastic tensioning components are sequentially arranged on the tensioning beam 1 along its extension direction. Each elastic tensioning component includes an elastic body and a tension adjusting component. The tension adjusting component is connected to the screen of the vibrating screen and generates an adjustable tension force by compressing the elastic body to fix the screen.

[0028] Specifically, such as Figure 2 As shown, modular welding refers to welding pre-formed flange plates 7, seat plates 8, hollow rectangular tubes 9, and guide plates 10 according to a certain modular combination. These components are pre-processed and then connected together by welding. The elastic tensioning assembly consists of an elastomer and a tension adjustment assembly, and is a component combination used to provide tension to the vibrating screen mesh. The tensioning beam 1 adopts modular welding of pre-formed components, making the structure more stable and easier to produce. The hollow rectangular tube 9 provides supporting strength, the flange plates 7 at both ends facilitate connection with the side plates of the vibrating screen, the seat plate 8 is used to install the elastic tensioning assembly, and the guide plate 10 serves to guide the material. The elastic tensioning assembly generates tension by compressing the elastomer, and the tension adjustment assembly is used to adjust the magnitude of the tension, thereby achieving stable tension of the screen mesh.

[0029] This embodiment reduces welding complexity and deformation through modular welding, facilitating production and maintenance. The hollow rectangular tube 9 reduces the weight of the tension beam 1, lowering energy consumption. The elastic tensioning component allows for flexible adjustment of the tension force, ensuring a securely tensioned screen. In asphalt mixing plants, vibrating screens screen aggregates. After the tension beam 1 proposed in this embodiment is installed, during the screening process, the hollow rectangular tube 9 of the tension beam 1 bears relatively little weight pressure, while the elastic tensioning component can adjust the tension force at any time according to the screen's usage, ensuring the screen remains in a good screening state. By reducing the weight of the tensioning device, the problem of increased dynamic load and energy consumption when the screen body is large is avoided, resulting in reduced energy consumption and increased strength.

[0030] In a preferred embodiment, the elastic body is a compression spring 2, with both ends of the compression spring 2 fixed inside the compression spring seat 3, and one side of the compression spring seat 3 abutting against the seat plate 8.

[0031] Specifically, the compression spring 2 is a common spring that generates elastic force through elastic deformation. The compression spring seat 3 is a component for fixing both ends of the compression spring 2. The material is mostly metal, and the shape is adapted to the compression spring 2. The compression spring 2, as an elastic body, is fixed at both ends in the compression spring seat 3. When the compression spring seat 3 is subjected to external force, the compression spring 2 is compressed to generate elastic force. The compression spring seat 3 is in abutment with the seat plate 8 on one side, and the elastic force of the compression spring 2 is transmitted to the tension beam 1, thereby generating tension on the screen. The compression spring 2 has good elasticity and stability, and can continuously provide stable tension. The compression spring seat 3 fixes the compression spring 2 to prevent it from deviating during work, ensuring stable transmission of tension. When the vibrating screen is working, the screen will be subjected to a large force due to the continuous impact of the material. At this time, the compression spring 2, under the fixation of the compression spring seat 3, continuously applies stable tension to the screen, ensuring that the screen will not loosen due to the impact of the material, and ensuring the accuracy of screening.

[0032] In a preferred embodiment, the tension adjusting assembly comprises a threaded pull rod 12 and an adjusting nut 4. One end of the threaded pull rod 12 is connected to the screen, and the other end passes through the compression spring seat 3 and extends to the outside of the tension beam 1. The adjusting nut 4 is screwed onto the extended end of the threaded pull rod 12. The side of the compression spring seat 3 away from the seat plate 8 is in abutment with the adjusting nut 4. By adjusting the screwing depth of the adjusting nut 4, the compression spring 2 is compressed to control the tension.

[0033] Specifically, the threaded pull rod 12 is an elongated rod-shaped part with threads. The adjusting nut 4 is a part used in cooperation with the threaded pull rod 12, and is adjusted in position by being screwed onto the threaded pull rod 12. One end of the threaded pull rod 12 is connected to the screen, and the other end passes through the compression spring seat 3. The adjusting nut 4 is screwed onto the extended end thereof. By rotating the adjusting nut 4, the position of the adjusting nut 4 on the threaded pull rod 12 is changed, thereby compressing the compression spring 2. The elastic deformation of the compression spring 2 generates different sizes of tension, and precise adjustment of the tension of the screen is achieved. The threaded connection is easy to operate, and the size of the tension can be easily adjusted according to actual needs. The structure is simple, and the parts are easy to maintain and replace. In daily equipment maintenance, if the screen is found to be slightly loose, affecting the screening effect. At this time, the worker only needs to use a wrench to screw the adjusting nut 4, so that the adjusting nut 4 moves towards the compression spring seat 3, further compresses the compression spring 2, and increases the tension, so that the screen can be restored to a suitable tension state.

[0034] In a preferred embodiment, the tension adjusting assembly further comprises a protective sleeve 5. The protective sleeve 5 comprises a nut matched with the threads of the threaded pull rod 12, and a hollow sleeve protecting the threads of the threaded pull rod 12. One end of the hollow sleeve is closed. The protective sleeve 5 is screwed onto the extended end of the threaded pull rod 12. The inner diameter of the hollow sleeve is greater than the outer diameter of the threads of the threaded pull rod 12.

[0035] Specifically, the sheath 5 is a component for protecting the exposed part of the threaded pull rod 12, which is welded by a nut and a hollow sleeve. The sheath 5 is sleeved on the exposed part of the threaded pull rod 12, so that the threaded pull rod 12 can be prevented from being abraded and corroded by external materials and dust during the operation of the vibrating screen, and the adjusting nut 4 can be prevented from loosening during the vibration.

[0036] In a preferred embodiment, the seat plate 8 is arranged on one side surface of the hollow rectangular tube 9 close to the vibrating screen, and the seat plate 8 comprises a plurality of square plates corresponding to each elastic tensioning assembly.

[0037] Specifically, the square plate improves the installation stability of the elastic tensioning assembly and ensures that each elastic tensioning assembly can work normally, thereby ensuring the consistency of the overall tensioning effect of the screen mesh. When the elastic tensioning assembly is installed, one compression spring seat 3 and related parts are installed on each square plate. Due to the design of the square plate, the compression spring seat 3 is fixed in position after installation and cannot be offset, so that the tensioning force of the screen mesh is uniformly distributed in the entire length direction, thereby improving the screening quality.

[0038] In a preferred embodiment, the seat plate 8 is higher than the hollow rectangular tube 9, and a first through hole is arranged on the area of the seat plate 8 that is higher than the hollow rectangular tube 9, and the first through hole is used for avoiding the threaded pull rod 12.

[0039] Specifically, the first through hole is a hole formed on the area of the seat plate 8 that is higher than the hollow rectangular tube 9, and is used for avoiding the threaded pull rod 12. During the processing of the seat plate 8, the first through hole is manufactured by using a drilling process according to the position and size of the threaded pull rod 12. The seat plate 8 is higher than the hollow rectangular tube 9, so as to provide sufficient space for the threaded pull rod 12 to move, thereby avoiding interference between the threaded pull rod 12 and the hollow rectangular tube 9 during installation and adjustment. The arrangement of the first through hole further ensures that the threaded pull rod 12 can smoothly pass through the seat plate 8, so as to realize the connection with the screen mesh and the adjustment of the tensioning force.

[0040] In a preferred embodiment, one end of the threaded pull rod 12 is connected with the screen mesh through a screen hook 6.

[0041] Specifically, as shown in Figure 3 the screen hook 6 is used as an intermediate component for connecting the threaded pull rod 12 and the screen mesh, and transmits the tensioning force of the threaded pull rod 12 to the screen mesh, so that the screen mesh can be kept in a tight state under the action of the tensioning force, thereby ensuring the normal operation of the screening work.

[0042] Further, the screen hook 6 comprises a connecting plate connected with the threaded pull rod 12 and a bent plate 11 integrally formed with the connecting plate, the bent plate 11 is formed with a first groove, and one side edge of the screen mesh is provided with a screen hook, and the screen hook is embedded in the first groove.

[0043] Specifically, the connecting plate is a part of the pull net hook 6 connected with the threaded pull rod 12, and is integrally formed when the pull net hook 6 is processed. The bending plate 11 is a curved part of the pull net hook 6 used for clamping the screen manifold, and is formed by a mold when the pull net hook 6 is processed. The first groove is a groove on the bending plate 11 used for embedding the screen end hook of the screen, and is processed at the same time when the bending plate 11 is processed. The screen end hook is a tubular structure of one side edge of the screen, and the extension direction of the screen end hook is perpendicular to the side plate of the vibrating screen. The screen end hook is integrally formed with the mesh structure of the screen when the screen is manufactured. The connecting plate of the pull net hook 6 is connected with the threaded pull rod 12, and the first groove of the bending plate 11 clamps the screen end hook of the screen. This structure design makes the connection between the pull net hook 6 and the screen more firm, and can effectively transmit the tensioning force to prevent the screen from displacement during the screening process.

[0044] The embodiment enhances the connection strength between the pull net hook 6 and the screen, ensures stable transmission of the tensioning force, and improves the reliability of the screen work.

[0045] Further, the connecting plate abuts against the upper surface of the hollow rectangular pipe 9.

[0046] Specifically, the connecting plate abuts against the upper surface of the hollow rectangular pipe 9, which provides additional support for the pull net hook 6, makes the pull net hook 6 more stable when transmitting the tensioning force, reduces the shaking and deformation of the pull net hook 6, and ensures that the tensioning force can be accurately transmitted to the screen.

[0047] In a preferred embodiment, the material guide plate 10 is vertically welded with the seat plate 8, and the material guide plate 10 is a wear-resistant plate.

[0048] Specifically, the wear-resistant plate can improve the wear resistance of the material guide plate 10, prolong the service life of the material guide plate 10, and reduce the influence of the wear of the material guide plate 10 on the material guiding effect.

[0049] The embodiment optimizes the flow of the material on the screen, improves the screening efficiency, prolongs the service life of the material guide plate 10, and reduces the equipment maintenance cost. When a large amount of hard aggregate is screened, the material guide plate 10 can effectively resist the friction of the aggregate, and even after long-term use, the surface of the material guide plate 10 will not be seriously worn.

[0050] The principles and embodiments of the present application are described by using specific examples. The above description of the embodiments is only used to help understand the method and its core idea. The above description is only the preferred embodiment of the present application. It should be pointed out that due to the limitation of the expression, there are infinite specific structures. For ordinary skilled persons in the art, some improvements, refinements or changes can be made without departing from the principles of the present application. The technical features described above can be combined in an appropriate manner. These improvements, refinements, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, shall be regarded as the protection scope of the present application.

Claims

1. A vibrating screen mesh tensioning device, characterized in that, include: The tension beam (1) is composed of pre-formed flange plate (7), seat plate (8), hollow rectangular tube (9) and guide plate (10) through modular welding; flange plate (7) is welded to both ends of the hollow rectangular tube (9); the seat plate (8) is vertically fixed to the surface of the hollow rectangular tube (9) and integrated with the guide plate (10); the flange plate (7) is detachably connected to the side plate of the vibrating screen. Multiple elastic tensioning components are arranged sequentially on the tensioning beam (1) along the extension direction of the tensioning beam (1); each elastic tensioning component includes an elastic body and a tension adjustment component, the tension adjustment component is connected to the screen of the vibrating screen, and generates an adjustable tension force by compressing the elastic body to fix the screen.

2. The vibrating screen tensioning device according to claim 1, characterized in that: The elastic body is a compression spring (2), and the two ends of the compression spring (2) are respectively fixed in the compression spring seat (3). One side of the compression spring seat (3) abuts against the seat plate (8).

3. The vibrating screen tensioning device according to claim 2, characterized in that: The tension adjustment assembly includes a threaded rod (12) and an adjusting nut (4); one end of the threaded rod (12) is connected to the screen, and the other end passes through the compression spring seat (3) and extends to the outside of the tension beam (1). The adjusting nut (4) is screwed onto the extended end of the threaded rod (12), and the side of the compression spring seat (3) away from the seat plate (8) abuts against the adjusting nut (4). The tension force is controlled by adjusting the screwing depth of the adjusting nut (4) to compress the compression spring (2).

4. The vibrating screen tensioning device according to claim 3, characterized in that: The tension adjustment assembly also includes a sleeve (5), which includes a nut that matches the thread of the threaded rod (12) and a hollow sleeve that protects the thread of the threaded rod (12). One end of the hollow sleeve is closed, and the sleeve (5) is screwed onto the extension end of the threaded rod (12). The inner diameter of the hollow sleeve is larger than the outer diameter of the thread of the threaded rod (12).

5. The vibrating screen tensioning device according to claim 1, characterized in that: The seat plate (8) is disposed on the side surface of the hollow rectangular tube (9) near the vibrating screen, and the seat plate (8) includes a plurality of square plates corresponding to each of the elastic tensioning components.

6. The vibrating screen tensioning device according to claim 3, characterized in that: The height of the seat plate (8) is higher than that of the hollow rectangular tube (9), and a first through hole is provided in the area of ​​the seat plate (8) above the hollow rectangular tube (9), the first through hole being used to avoid the threaded tie rod (12).

7. The vibrating screen tensioning device according to claim 3, characterized in that: One end of the threaded pull rod (12) is connected to the screen via a mesh hook (6).

8. The vibrating screen tensioning device according to claim 7, characterized in that: The mesh hook (6) includes a connecting plate connected to the threaded pull rod (12) and a bent plate (11) integrally formed with the connecting plate. The bent plate (11) has a first groove, and one side edge of the mesh has a mesh end hook, which is embedded in the first groove.

9. The vibrating screen tensioning device according to claim 8, characterized in that: The connecting plate abuts against the upper surface of the hollow rectangular tube (9).

10. The vibrating screen tensioning device according to claim 1, characterized in that: The guide plate (10) is welded perpendicularly to the seat plate (8), and the guide plate (10) is a wear-resistant plate.

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