Novel tensioning device in screen mesh of complex frequency screen

Abstract

The utility model discloses a novel tension device in a complex frequency screen, which comprises a press-fitting angle steel, a hook plate, a tension nut, a cup head square neck bolt, a support angle steel and a screen, the support angle steel is fixed on a side plate of a screening machine through a rivet, the cup head square neck bolt is fixed on the side plate of the screening machine through a positioning bolt, the lower part of the hook plate is provided with a bent part, and the bent part is fixed on the screen. The bent three hooks are installed at the edge covering positions of the two ends of the screen, the inner ends of the cup-head square-neck bolts penetrate through the hook plates, the cup-head square-neck bolts are provided with the tensioning nuts, the press-fitting angle steel is fixed to the screening machine side plate through the bolts, and the lower surface of the press-fitting angle steel is tightly pressed on the hook plates. The tensioning mode is an inner tensioning mode, only one person is needed to quickly complete bolt penetrating installation and bolt fastening on the inner side of the screening machine, manpower needed by a traditional outer tensioning mode is 50% of manpower needed by the traditional outer tensioning mode, and the manpower cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tensioning a screen mesh of a multiple-frequency screen, in particular to a novel tensioning device inside a screen mesh of a multiple-frequency screen. Background Art

[0002] In recent years, multiple frequency screens have been widely used in screening operations in coal, mining and other industries. This type of screen has the advantages of large processing capacity and good screening effect, and has therefore been recognized by the majority of users.

[0003] At present, the tensioning method of the multiple-frequency screen on the market is external tensioning, which is a traditional tensioning device. The tensioning device requires two people to operate together, one of whom inserts the bolts on the inside of the screen machine, and the other tightens the nuts on the outside of the screen machine. The installation of each bolt requires two people to operate synchronously at the same position at the same time; and a screen machine often has dozens or even hundreds of screen tensioning bolts, which is a huge workload. The requirement of two people operating synchronously makes the work more difficult. The manpower and time costs invested by users here are very high. The disadvantages of the traditional tensioning device need to be solved urgently.

[0004] In order to solve the above problems, optimize the structure of the multiple-frequency screen mesh tensioning device and reduce manpower and time costs, a new type of multiple-frequency screen mesh internal tensioning device was developed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a novel internal tensioning device for a multiple-frequency screen. The tensioning method adopted is an internal tensioning form. Only one person is required on the inside of the screen machine to quickly complete the two tasks of bolt threading and bolt tightening. This is 50% of the manpower required for the traditional external tensioning method, which greatly reduces the labor cost and can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel tensioning device inside the screen of a multiple-frequency screen, comprising a pressed angle steel, a hook plate, a tensioning nut, a semicircular head square neck bolt, a supporting angle steel and a screen, the supporting angle steel being fixed to the side plate of the screen machine by rivets, the semicircular head square neck bolt being fixed to the side plate of the screen machine by positioning bolts, a bending three being provided at the lower part of the hook plate, the bending three being hooked at the edge at both ends of the screen, the inner end of the semicircular head square neck bolt passing through the hook plate, and a tensioning nut being provided on the semicircular head square neck bolt, the pressed angle steel being fixed to the side plate of the screen machine by bolts, and the lower surface of the pressed angle steel being tightly pressed against the hook plate.

[0007] Furthermore, the upper part of the hook plate is provided with bend 2 and bend 1, bend 2 is inclined upward, bend 1 is fitted with the lower surface of the press-fit angle steel, and an oblong hole is provided on the hook plate, and the inner end of the semicircular head square neck bolt passes through the oblong hole.

[0008] Furthermore, a gourd hole is arranged on the side plate of the screen machine, and the semicircular head square neck bolt passes through the gourd hole.

[0009] Furthermore, two tensioning nuts are provided, and a large gasket is provided between the inner tensioning nut and the hook plate.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The tensioning method adopted is the internal tensioning form. Only one person is needed to quickly complete the two tasks of bolt threading and bolt tightening on the inside of the screen machine, which is 50% of the manpower required by the traditional external tensioning method, greatly reducing the labor cost.

[0012] 2. The device has a simple structure and stable and reliable performance, which solves the problems of difficult working progress and high time cost of the existing traditional screen external tensioning device, making the screen tensioning work simple and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a left-side structural schematic diagram of the hook plate of the utility model;

[0015] Figure 3 This is a schematic diagram of the partial structure of the side plate of the screen machine of the utility model;

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the hook plate of the utility model.

[0017] In the figure: 1 press-fit angle steel, 2 hook plate, 3 large gasket, 4 tightening nut, 5 positioning nut, 6 semicircular head square neck bolt, 7 support angle steel, 8 screen, 9 screen machine side plate, 10 gourd hole, 11 bend two, 12 oblong hole, 13 bend three, 14 bend one. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0019] See also Figure 1-4The utility model provides a technical solution: a novel tensioning device inside the screen of a multiple frequency screen, comprising a press-fit angle steel 1, a hook plate 2, a tensioning nut 4, a semicircular head square neck bolt 6, a supporting angle steel 7 and a screen 8. The supporting angle steel 7 is fixed to the side plate 9 of the screen machine by rivets to support the screen 8. The semicircular head square neck bolt 6 is fixed to the side plate 9 of the screen machine by a positioning bolt 5. The positioning bolt 5 is located on the inner side of the side plate 9 of the screen machine to position and tighten the semicircular head square neck bolt 6. The structure ensures that one person can successfully complete the bolt threading and bolting inside the screen machine. The two tasks of fastening are simplified, and the labor cost is reduced. A bending three 13 is provided at the lower part of the hook plate 2, and the bending three 13 is hooked on the edge of the two ends of the screen 8. The inner end of the semicircular head square neck bolt 6 passes through the hook plate 2, and the semicircular head square neck bolt 6 is provided with a tightening nut 4. The hook plate 2 is fixed to the side plate 9 of the screen machine by the tightening nut 4. The screen 8 is tensioned after the hook plate 2 is fixed in place. The pressed angle steel 1 is fixed to the side plate 9 of the screen machine by bolts, and the lower surface of the pressed angle steel 1 is tightly pressed on the hook plate 2, which prevents the hook plate 2 from running away and ensures the stability of the structure.

[0020] The upper part of the hook plate 2 is provided with a second bend 11 and a first bend 14. The second bend 11 is inclined upward, and the first bend 14 is in contact with the lower surface of the press-fitted angle steel 1. The hook plate 2 has three bends. This structure makes the overall strength of the hook plate 2 greater. An oblong hole 12 is provided on the hook plate 2, and the inner end of the semicircular head square neck bolt 6 passes through the oblong hole 12. The oblong hole 12 can ensure that the hook plate 2 is fixed in place.

[0021] A gourd hole 10 is provided on the side plate 9 of the screen machine, and the semicircular head square neck bolt 6 passes through the gourd hole 10. The semicircular head square neck bolt 6 can be completed by one operator on the inside of the screen machine. All the work of bolt threading and fixing is completed. The semicircular head square neck bolt 6 is inserted from the upper part of the gourd hole 10 on the side plate 9 of the screen machine, and finally the square neck thereof is placed at the lower part of the gourd hole 10, and the semicircular head square neck bolt 6 is tightened by the positioning nut 5. This structure ensures that one person can successfully complete the two tasks of bolt threading and bolt tightening on the inside of the screen machine.

[0022] There are two tensioning nuts 4, and a large gasket 3 is arranged between the inner tensioning nut 4 and the hook plate 2. The large gasket 3 not only strengthens the hook plate 2, but also increases the locking force of the tensioning nut 4. The two tensioning nuts 4 can effectively prevent the semi-circular head square neck bolt 6 from loosening.

[0023] When in use: first insert the semicircular head square neck bolt 6 into the gourd hole 10 and fix it with the positioning nut 5, then fix the hook plate 2 to the side plate 9 of the screen machine through the large gasket 3 and the tightening nut 4, and tighten the screen 8 after the hook plate 2 is fixed in place. The press-fit angle steel 1 is fixed to the side plate 9 of the screen machine by bolts to prevent the hook plate 2 from running away. All the work of bolt threading and fixing is completed by an operator on the inside of the screen machine.

[0024] The basic principles, main features and advantages of the present invention are shown and described above. Without departing from the spirit and scope of the present invention, the present invention may also be subject to various changes and improvements, which are all within the scope of the present invention to be protected.

Claims

1. A novel tensioning device for a multiple frequency screen mesh, comprising a press-fit angle steel (1), a hook plate (2), a tensioning nut (4), a semicircular head square neck bolt (6), a supporting angle steel (7) and a screen mesh (8), characterized in that: The supporting angle steel (7) is fixed to the side plate (9) of the screen machine by rivets, the semicircular head square neck bolt (6) is fixed to the side plate (9) of the screen machine by positioning bolts (5), a bending three (13) is provided at the lower part of the hook plate (2), and the bending three (13) is hooked at the edge of the two ends of the screen (8), the inner end of the semicircular head square neck bolt (6) passes through the hook plate (2), and a tensioning nut (4) is provided on the semicircular head square neck bolt (6), and the press-fit angle steel (1) is fixed to the side plate (9) of the screen machine by bolts, and the lower surface of the press-fit angle steel (1) is tightly pressed on the hook plate (2).

2. A novel multiple frequency screen inner tensioning device according to claim 1, characterized in that: The upper part of the hook plate (2) is provided with a second bend (11) and a first bend (14), the second bend (11) is inclined upward, the first bend (14) is in contact with the lower surface of the press-fit angle steel (1), and the hook plate (2) is provided with an oblong hole (12), and the inner end of the semicircular head square neck bolt (6) passes through the oblong hole (12).

3. A novel multiple frequency screen inner tensioning device according to claim 1, characterized in that: A gourd hole (10) is provided on the side plate (9) of the screen machine, and the semicircular head square neck bolt (6) passes through the gourd hole (10).

4. The novel multiple frequency screen inner tensioning device according to claim 1 is characterized in that: Two tightening nuts (4) are provided, and a large gasket (3) is provided between the inner tightening nut (4) and the hook plate (2).

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