CN108421706B - Vibrating screen variable-section screen rail seat and screen combined structure and installation method - Google Patents

Abstract

The invention relates to a vibrating screen, in particular to a vibrating screen rail seat, a screen combination structure and an installation method, wherein the cross section shape of the rail seat in the length direction of a rail is expanded or contracted, and the cross section shape of a clamping part corresponding to the screen is synchronously expanded and contracted. The invention has simple structure, and can produce the effect of preventing the movement of the screen surface by only changing the sections of the original rail seat rail and a part of the clamping groove of the screen edge; the durability of the screen is improved, the leakage of the material with the ultra-diameter is prevented, and the damage caused by the unilateral movement of the side of the screen card is prevented.

Description

Vibrating screen variable-section screen rail seat and screen combined structure and installation method

Technical Field

The invention relates to a vibrating screen, in particular to a screen rail seat of the vibrating screen, a screen combination structure and an installation method.

Background

The vibrating screen is equipment for screening materials, a screen is installed in a vibrating screen main machine, the screen is driven by the main machine, and then the materials are driven to vibrate in the advancing process, so that the materials penetrate through the screen holes of the screen. There are many forms of screens, including metallic screens and nonmetallic screens, by material. There are also products in which a metal screen is used as the main body and a non-metal material is used to cover the frame. The installation mode is that the bolts are firm, the drag hook is tensioned, and the clamp type installation is realized. The clip type installation is mainly used for nonmetallic screens or nonmetallic frame screens. The clamping type screen is provided with a multi-column clamping type, a bolt clamping type, an expanding bolt clamping type and a rail seat clamping type. The rail seat clamping type is divided into a double rail type and a single rail type, and the materials can be divided into a metal type and a nonmetal type. The multi-column clamping type is such as CN201180025086.8 and CN201180068606.3, the plug pin clamping type is CN00802832.X, the geometric tolerance requirements are met on two degrees of freedom, the rail seat type is such as CN201210216809.9, CN200580031058.1 and CN201220536035.3, the geometric tolerance requirements are met on only one degree of freedom, and obviously, compared with the convenience of screen production and screen assembly and disassembly, the rail seat type which only limits one degree of freedom is simpler and more convenient than the pin type which limits two degrees of freedom. The multi-column clamping type, the bolt clamping type, the expansion pin clamping type and the like with two degrees of freedom being limited are adopted, the production mould requires that the shrinkage rate is changed, the shape and position tolerance of the hole or the supporting plate of the screen mesh installation structure of the vibrating screen host machine is more complex and difficult, the installation is more difficult, one side is often installed, and the other side is deformed and misplaced, so that the hole is difficult to align. The rail seat type with the geometric tolerance requirement on only one degree of freedom has the advantages that the production is simpler, the mold is simpler, the shrinkage rate only considers one direction, the disassembly and the assembly are easier, but the rail seat type has the defect that the section of the rail seat in the length direction is uniform, namely, only one degree of freedom in the non-length direction is limited, the degree of freedom in the length direction is not limited, and the positioning accuracy is difficult in the direction of the unrestricted degree of freedom (the length direction). In the running process of the vibrating screen main machine, the vibrating screen machine continuously vibrates, the screen vibration material is in the forward direction, namely in the length direction of the screen, the screen has a sliding trend in the direction of unrestricted freedom (in the length direction), the sliding sizes of the screen are not necessarily consistent left and right along the length direction, the screen can deform and misplacement, gaps are formed between the screens, material leakage is generated, and the like. Although there is typically a baffle stop at the foremost end of the full screen, other screens than the foremost screen have a forward trend. In the prior art, the double rail seat is usually used for positioning the screen in a rail separation mode such as CN200820073743.1, and the corresponding positions of the clamping grooves of the screen are connected. However, the partition mode is not the most suitable mode, because the part of the screen corresponding to the track partition is solid, so that the screen is difficult to be taken in and taken out, and even needs to be broken with great force to be taken out. Thus, new ways to overcome the above drawbacks are needed.

Disclosure of Invention

In order to solve the problems, the rail seat type screen mesh and screen mesh combined structure provided by the invention solves the problems that the rail seat type screen mesh mounting structure is not limited in the length direction of the rail seat and is difficult to accurately position, can prevent the screen surface from moving, and is convenient to mount. Correspondingly, the invention also provides a vibrating screen variable cross-section screen rail seat and a screen combination installation method.

The technical scheme adopted for solving the technical problems is as follows: vibrating screen variable cross section screen cloth rail seat and screen cloth integrated configuration, characterized by: the cross section shape of the rail seat in the length direction of the rail is expanded or contracted, and the cross section shape of the corresponding clamping part of the screen mesh is synchronously expanded and contracted. Namely: the cross section shape of the rail seat in the length direction of the rail is expanded and changed, and the cross section shape of the corresponding clamping part of the screen mesh is synchronously expanded, or: the cross section shape of the rail seat in the length direction of the rail is shrunk and changed, and the cross section shape of the corresponding clamping part of the screen mesh is synchronously shrunk, so that the positioning in the length direction of the rail is realized.

The above-mentioned "cross-sectional shape of the corresponding clamping portion of the screen" is a cross-section of a cavity shape formed by solid screen bodies and capable of accommodating rail seat tracks. The expanded rail seat rail can be accommodated only by expanding the cross section of the cavity, and the contracted rail seat rail can be tightly attached only by contracting the cross section of the cavity, so that the positioning function in the length direction is formed.

The combined structure of the variable cross-section screen rail seat and the screen is characterized in that the cross-section shape of the rail seat in the length direction of the rail is expanded or contracted, and the cross-section shape of the corresponding clamping part of the screen is synchronously expanded and contracted.

It is further preferred that when the rail cross section of the rail seat is contracted, the length of the corresponding snap-in portion of the screen is shorter than the length of the contracted portion of the rail cross section of the rail seat.

Further preferably, when the rail cross section of the rail seat is expanded, the length of the corresponding engagement portion of the screen is longer than the length of the enlarged rail cross section portion of the rail seat.

Further preferably, the rail length of the rail seat having the same length as the screen surface may be changed in one section or may be changed in a plurality of sections.

Further preferably, the cross-sectional shape of the track may be kept constant or various transition or gradual cross-sections may be used within the length of the expanded section of the track of each section of the rail seat.

Further preferably, the rail seat has a rail variable cross-section portion with a cross-sectional shape of a large-top-small-bottom clip-type structure, and the large-top portion has a square, round, multi-variant or various special-shaped.

In order to avoid the situation that two degrees of freedom are limited, and the installation is difficult, the variable cross-section lengths of the track of the screen and the rail seat can be different in length. Specifically, when the rail section of the rail seat is in a contracted mode, the length of the corresponding clamping part of the screen is shorter than the length of the contracted part of the rail section of the rail seat; when the rail section of the rail seat is in an expanding mode, the length of the corresponding clamping part of the screen is longer than the length of the expanding part of the rail section of the rail seat; thus, the screen variable section only needs to be abutted against the rail seat towards one discharging side, and a small amount of gaps are reserved on the other side, so that the positioning effect can be achieved. When a small amount of shape and position deviation occurs between the lengths of the screens, a certain adjustment margin exists because of the clearance at the other end, and the assembly difficulty in the length direction can be avoided. The gap need not be excessive, but is provided to overcome deviations in screen manufacture and deviations in screen support structure. In the case of coarser mesh screens, a small amount of gaps between the screens are acceptable, the screening effect is not affected, and in the case of fine mesh screens, because the front and rear screens have a vertically lapped structure, the phenomenon of leakage of fine materials larger than the mesh still cannot occur.

The material of the rail seat can be a metal material or a non-metal material, and the non-metal material mainly comprises polyurethane and rubber. Metal rail mounts and polyurethane rubber rail mounts have advantages and disadvantages, respectively, and units are available for use with both metal and polyurethane and rubber. Advantages and disadvantages of the metal rail seat: the metal rail seat has low cost and large alterability, but the metal rail seat has the defects that the metal rail seat is soft and hard when being matched with the polyurethane rubber screen mesh, has relatively small elasticity, and is easy to generate relative motion friction, so that the screen mesh is not tightly assembled. The long plates and the long strips of the metal rail seat are welded, so that the form and position tolerance is difficult to ensure, and the welding seam between the two rails cannot be welded in place. The mounting form and position tolerance is difficult to ensure. The screen is not supported by the seat plate, and the rigidity requirement of the screen is high. The variable cross-section effect is required to be made on the length of the metal rail seat, and the difficulty is high. Advantages and disadvantages of polyurethane and rubber rail mounts: the polyurethane rail seat and the screen mesh are soft to soft, the elasticity is better, the relative motion is not easy to generate, the installation is more firm, the shape of the clamping groove can be changeable, the clamping is ensured to be firm, and the variable cross-section effect on the length of the polyurethane rubber rail seat is easy. However, the manufacture of the polyurethane rubber rail seat requires die processing, and the initial cost is slightly high.

The material of the screen is polyurethane, rubber and plastic, and the main body of the screen is metal woven net, and polyurethane rubber frame is cast. And forming a shape matched with the rail seat on the frame.

The structure of the rail seat and the screen mesh is usually a clamping structure with a large upper part and a small lower part, and the structure can be various.

The section of the track variable section part of the rail seat is square, round, variable, various special-shaped and the like.

The rail seat can be provided with one or more variable cross-section parts in the same length as the screen, the rail seat length of the whole screen can be provided with a plurality of variable cross-section parts, the variable cross-section parts are not necessarily arranged on the corresponding length of each screen, namely the whole screen, the variable cross-section structures are not necessarily arranged on each screen in the length direction, the variable cross-section structures are also only arranged on part of the screens, namely the length direction of the whole screen is not limited by each screen, the degree of freedom in the length direction is limited by less degrees of freedom in the length direction, the difficulty in production and installation can be reduced, and a positioning effect in the length direction can be generated enough to ensure that the screens cannot slide forwards.

The invention has the technical effects that: the invention has simple structure, and can produce the effect of preventing the movement of the screen surface by only changing the sections of the original rail seat rail and a part of the clamping groove of the screen edge. The durability of the screen is improved, the leakage of the material with the ultra-diameter is prevented, and the damage caused by the unilateral movement of the side of the screen card is prevented. The device is economical and practical, can be applied to various rail seat type structures, and does not need to change a host installation structure.

Drawings

FIG. 1 is a schematic illustration of a type I monorail seat provided by the present invention.

Fig. 2 is a schematic view of a screen with a Bian Shangui-like screen provided by the present invention.

FIG. 3 is a schematic illustration of an assembled screen of the present invention with a single rail track of type I Bian Shangui.

FIG. 4 is a schematic diagram of an assembly of two flush-edge monorail screens and a type I monorail seat provided by the invention.

FIG. 5 is a schematic view of a type II monorail seat provided by the present invention.

FIG. 6 is a schematic illustration of a staggered monorail screen provided by the present invention.

FIG. 7 is a schematic diagram of an assembly of a single-track screen with a type II monorail seat according to the present invention.

FIG. 8 is a schematic diagram of an assembly of two offset monorail screens with a type II monorail seat provided by the present invention.

Fig. 9 is a schematic view of a dual rail seat provided by the present invention.

Fig. 10 is a schematic view of a dual-rail screen provided by the present invention.

FIG. 11 is a schematic diagram of an assembly of a dual-rail screen and dual-rail seat provided by the present invention.

Fig. 12 is an assembly schematic diagram of two double-rail screens and a double-rail seat provided by the invention.

Fig. 13 is a profile rail seat diagram provided by the present invention.

In the figure, a type 1I monorail seat; 2. i type monorail seat supporting plate; 3. i-shaped rail seat connecting bolts; 4. i-type monorail seat track; 5. i type monorail seat track section reducing section; 6. i type monorail seat track section is a constant section; 7. i-type monorail seat track section expansion section; 8. trimming single-rail screen cloth; 9. an enlarged section of the track section of the trimming monorail screen; 10. the section of the track of the trimming monorail screen is unchanged; 11. a reduced section of the track section of the trimming monorail screen; 12. type II monorail seat; 13. II type monorail seat supporting plates; 14. II type rail seat connecting expansion pin; 15. II type monorail seat rails; 16. II-type monorail rail seat track section reducing section; 17. II-type monorail rail seat track section unchanged section; 18. II-type monorail rail seat track section enlarging section; 19. a staggered single-rail screen; 20. the staggered-edge monorail screen extends out of the edge I; 21. the staggered edge monorail screen is contracted; 22. the staggered-edge monorail screen extends out of the edge II; 23. a double rail seat; 24. a double rail seat pallet; 25. a dual rail track; 26. the section of the double-rail seat is unchanged; 27. a double-rail seat section enlarging section; 28. a reduced section of the cross section of the double rail seat; 29. a double-rail screen; 30. a reduced section of the track section of the double-rail screen; 31. the section of the track of the double-rail screen mesh is unchanged; 32. a double-rail screen track section enlarging section; 33. a special-shaped rail seat; 34. the section of the track of the special-shaped rail seat is unchanged; 35. the section of the special-shaped rail seat track is enlarged and changed into a section; 36. the section of the special-shaped rail seat track is reduced and gradually changed.

Detailed Description

For a better explanation of the present invention, the technical solution of the present invention is described below by means of specific embodiments in conjunction with the accompanying drawings.

Fig. 1 is a schematic view of a type i monorail seat 1 provided by the present invention. The rail seat is composed of an I-type single rail seat supporting plate 2, an I-type rail seat connecting bolt 3 and an I-type single rail seat rail 4, wherein the single rail is characterized in that only one rail is arranged on the rail seat, the I-type single rail seat rail 4 is divided into an I-type single rail seat rail section unchanged section 6, an I-type single rail seat rail section reduced section 5 and an I-type single rail seat rail section enlarged section 7. The cross-section shape of the track is a semicircular support column, the semicircular shape can provide better clamping force, the screen is not easy to loose, and the single-side clamping of the screen can also provide enough clamping force. The reduced section 5 of the I-shaped monorail seat track section and the enlarged section 7 of the I-shaped monorail seat track section provide stop ends of the end faces which are matched with corresponding end faces of the screen surface to stop the forward movement trend of the screen. The type I monorail seat 1 can be matched with a trimming monorail screen 8 shown in figure 2 or a staggered monorail screen.

Fig. 2 is a schematic view of an flush monorail screen 8 provided by the present invention. The two sides of the trimming monorail screen 8 are track sides matched with the I-shaped monorail rail seat, and the section of the track side is provided with a trimming monorail screen track section unchanged section 10, a trimming monorail screen track section enlarged section 9 and a trimming monorail screen track section reduced section 11.

FIG. 3 is a schematic view of an assembled side-flush monorail screen 8 and a type I monorail seat 1 according to the present invention. The constant section 10 of the section of the trimming monorail screen is matched with the constant section 6 of the section of the I-shaped monorail seat rail, the enlarged section 9 of the section of the trimming monorail screen is matched with the enlarged section 7 of the section of the I-shaped monorail seat rail, and the reduced section 11 of the section of the trimming monorail screen is matched with the reduced section 5 of the section of the I-shaped monorail seat rail. The screen surface is prevented from moving forward due to the end surface limiting effect of the reduced section 5 of the I-shaped monorail seat track. Because of the end surface limiting effect of the section expanding section 7 of the I-shaped monorail seat track, the screen surface is prevented from moving forwards.

Fig. 4 is a schematic diagram showing the assembly of two flush-edge monorail screens 8 with a type i monorail seat 1 according to the present invention. The side edges of the two single-track screens 8 are flush and close. The side edges of the two trimming monorail screens 8 respectively occupy half of the I-shaped monorail seat rail track 4, and the upward vibration force of the two trimming monorail screens 8 is balanced through the left side and the right side of the I-shaped monorail seat rail track 4 of the I-shaped monorail seat 1, so that upward and downward force is synthesized.

Fig. 5 is a schematic view of a type ii monorail seat 12 provided by the present invention. The II-type single-track rail seat 12 is composed of a II-type single-track rail seat supporting plate 13, a II-type rail seat connecting expansion pin 14 and a II-type single-track rail seat track 15, wherein the single-track rail seat is formed by only one track, and the II-type single-track rail seat track 15 is divided into a II-type single-track rail seat track section unchanged section 17, a II-type single-track rail seat track section reduced section 16 and a II-type single-track rail seat track section enlarged section 18. The cross section shape of the rail is a circular column, the circular shape has good mounting and dismounting convenience, and the half-packing structure of the screen mesh can provide enough clamping force. The constant section 17 of the II-type monorail seat track and the reduced section 16 of the II-type monorail seat track provide stop ends of the end faces which cooperate with the corresponding end faces of the screening surface to stop the forward movement of the screening surface. The type II monorail seat 12 can be fitted with a staggered monorail screen 19.

Fig. 6 is a schematic view of a staggered monorail screen 19 provided by the present invention. The staggered monorail screen 19, the clamping edge of one screen occupies only half of the rail seat track. The clamping edges of the two screens are staggered and clamped with the rail seat track. The clamping edge of the staggered edge single-rail screen 19 comprises a staggered edge single-rail screen extending edge I20, a staggered edge single-rail screen retracting edge 21 and a staggered edge single-rail screen extending edge II 22. Wherein the staggered single-track screen extends out of the edge I20 and the staggered single-track screen extends out of the edge II 22, and the cross sections of the rail seat tracks can be different, and the cross sections of the clamping grooves can be different, so that different serial numbers are marked.

FIG. 7 is a schematic illustration of the assembly of a single-track screen 19 with a type II monorail seat 12 provided by the present invention. Wherein the track of the type II monorail seat 12 having a type II monorail seat track cross-section enlargement 18 mates with the staggered monorail screen extension I20 of the staggered monorail screen 19. According to the matched size requirement, the clamping groove in the protruding edge I20 of the staggered edge monorail screen is provided with a constant cross section and a variable cross section.

FIG. 8 is a schematic view of the assembly of two offset monorail screens 19 with a type II monorail seat 12 provided by the present invention. The staggered single-rail screen 19 is clamped with the rail seat in a staggered manner, so that the screen mesh-free area is smaller, the screen mesh area of the screen is enlarged, namely the aperture ratio of the whole screen is enlarged, and the screening efficiency of unit area is improved.

Fig. 9 is a schematic view of a dual rail seat 23 provided by the present invention. The double rail seat 23 is composed of a double rail seat pallet 24 and a double rail seat rail 25. The number of the tracks on the double-rail seat track 25 on the double-rail seat 23 is two, and each track is respectively clamped with one clamping edge of the screen. Strong clamping force and simple manufacture. Likewise, the double-rail seat rail 25 on the double-rail seat 23 has a double-rail seat cross-section constant section 26, a double-rail seat cross-section enlarged section 27 and a double-rail seat cross-section reduced section 28.

Fig. 10 is a schematic view of a dual rail screen 29 provided by the present invention. Each clamping edge of the double-rail screen 29 is provided with a clamping groove with full side length, and each clamping groove is provided with a double-rail screen track section reducing section 30, a double-rail screen track section unchanged section 31 and a double-rail screen track section enlarging section 32.

Fig. 11 is a schematic diagram of an assembly of a dual rail screen 29 and dual rail mounts 23 provided by the present invention. One clamping edge of the double-rail screen 29 is matched and clamped with one rail of the double-rail seat 23. The cross-sectional changing section of the double rail seat 23 provides an end surface that cooperates with the cross-sectional changing section of the screen to prevent the screen from moving forward.

Fig. 12 is a schematic diagram showing the assembly of two double rail screens 29 with a double rail seat 23 according to the present invention. One clamping edge of the double-rail screen 29 is matched and clamped with one rail of the double-rail seat 23. The cross-sectional changing section of the double rail seat 23 provides an end surface that cooperates with the cross-sectional changing section of the screen to prevent the screen from moving forward. Meanwhile, the clamping edges of the adjacent double-rail screens 29 are clamped between the two rails of the double-rail seat 23, and the clamping edges of the adjacent double-rail screens 29 are more difficult to separate from the rails under the condition that the rails have enough strength.

Fig. 13 is a view of a profiled rail seat 33 provided by the present invention. The special-shaped rail seat 33 is provided with a constant section 34 of the cross section of the special-shaped rail seat rail, and is also provided with an enlarged and gradually-changed section 35 of the cross section of the special-shaped rail seat rail, the cross section of the special-shaped rail seat rail is gradually reduced from left to right, the left end face of the enlarged and gradually-changed section 35 of the cross section of the special-shaped rail seat rail provides a stop step, the matched screen clamping groove can generate a limiting effect, and the screen is prevented from moving from left to right. The profiled rail seat 33 further has a profiled rail seat track reduced section transition 36, the section of which is also tapered from left to right, the profiled rail seat track constant section 34 associated with the right end of the profiled rail seat track reduced section transition 36 providing an end surface that provides a stop step that enables the mating screen slot to limit movement of the screen from left to right.

The invention has simple structure, and can produce the effect of preventing the movement of the screen surface by only changing the sections of the original rail seat rail and a part of the clamping groove of the screen edge. The durability of the screen is improved, the leakage of the material with the ultra-diameter is prevented, and the damage caused by the unilateral movement of the side of the screen card is prevented. The device is economical and practical, can be applied to various rail seat type structures, and does not need to change a host installation structure.

The invention has been described above by way of example with reference to the accompanying drawings, it is clear that the implementation of the invention is not limited to the above-described manner, but that various modifications of the method concept and the technical solution of the invention are only adopted, or the method and the technical solution of the invention are directly applied to other occasions by the modifications, and are all within the scope of the invention.

Claims (6)

1. The vibrating screen variable-section screen rail seat and screen combined structure is characterized in that the section shape of the rail seat in the length direction of the rail is expanded or contracted, and the section shape of the corresponding clamping part of the screen is synchronously expanded and contracted; when the rail section of the rail seat is contracted, the length of the corresponding clamping part of the screen is shorter than the length of the contracted part of the rail section of the rail seat; when the rail section of the rail seat expands, the length of the corresponding clamping part of the screen is longer than that of the enlarged rail section of the rail seat.

2. The vibrating screen variable cross-section screen rail seat and screen combination structure according to claim 1, wherein the rail seat of the same length as the screen surface has a single section of cross-sectional shape change or a plurality of sections of cross-sectional shape change in the rail length.

3. The vibrating screen variable cross-section screen rail seat and screen combination structure according to claim 1, wherein the cross-section shape of the rail adopts various transition and gradual change cross-sections within the length range of the expansion section of the rail of each section rail seat.

4. The vibrating screen variable cross-section screen rail seat and screen combination structure according to claim 1, wherein the rail variable cross-section portion of the rail seat has a cross-sectional shape of a clip-type structure with a large top and a small bottom.

5. A method of installing a vibrating screen variable cross-section screen rail seat and screen combination structure as claimed in any one of claims 1 to 4, wherein the rail seat has a variation in cross-sectional shape in the rail length direction, and the screen is synchronously expanded in cross-sectional shape corresponding to the clamping portion, or: the cross section shape of the rail seat in the length direction of the rail is shrunk and changed, and the cross section shape of the corresponding clamping part of the screen mesh is synchronously shrunk, so that the positioning in the length direction of the rail is realized; when the rail section of the rail seat is in a contracted mode, the length of the corresponding clamping part of the screen is shorter than the length of the contracted part of the rail section of the rail seat; when the rail section of the rail seat is in an expanding mode, the length of the corresponding clamping part of the screen is longer than the length of the expanding part of the rail section of the rail seat; thus, the screen variable section only needs to be abutted against the rail seat towards one discharging side, and a small amount of gaps are formed on the other side, so that the positioning effect can be generated; when a small amount of shape and position deviation occurs between the lengths of the screens, a certain adjustment margin exists because of the clearance at the other end, and the assembly difficulty in the length direction can be avoided.

6. The method for installing a variable cross-section screen rail seat and screen combination structure for a vibrating screen according to claim 5, wherein one rail seat has a plurality of variable cross-section parts in the same length as the screen, the variable cross-section parts are distributed on the rail seat length of the whole screen, the variable cross-section structures are distributed on the whole screen in the length direction, and the variable cross-section structures are arranged on part or all of the screens.

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