Tight chain type tail for scraper

Abstract

The utility model provides a chain-tightening tail for a scraper, comprising a tail frame, a sliding frame, a tail shaft group and a screw assembly. The tail frame comprises a tail body and a middle plate, and a round tube crossbeam is arranged below the middle plate; the sliding frame comprises a slide plate and a longitudinal plate, and shaft group clamping plates and screw connecting plates are arranged at both ends of the longitudinal plate, and the slide plate is movably mounted between the middle plate and the round tube crossbeam; the tail shaft group comprises a tail shaft and a group of shaft clamping plates, and the tail shaft is assembled with the shaft group clamping plates and the shaft clamping plates; the screw assembly comprises a screw, one end of the screw is movably assembled with the screw connecting plate, and the other end thereof is threadedly assembled with a nut, the nut is arranged in a nut box hole, and the middle part of the screw is threadedly assembled with a lock nut. The device utilizes a screw spiral pair structure to realize that the relative position of the tail shaft group and the tail frame is adjustable and reciprocating, and through an inclined slideway consistent with the chain running angle, the pitch circle of the tail wheel at any position can be tangent to the chain running direction, so that the chain tightness can be adjusted according to the chain length.

Description

Technical Field

[0001] The utility model relates to the technical field of scraper conveyors, in particular to a tight chain type tail for a scraper conveyor. Background Art

[0002] Scrapers are transport machinery used in coal mining faces. They are mainly used for transportation in coal mining faces and mining area chute transportation. They can also be used in coal tunnels and semi-coal-rock tunnel excavation faces.

[0003] In the previous tail design of scraper conveyors of this structural type, the relative positions of the tail shaft group and the tail frame were fixed, and the tail shaft group could not move along the running direction of the scraper conveyor. Therefore, the distance between the tail and the head was constant, and the length of the chain wound between the head and the tail could not be adjusted, and the tightness of the chain could not be adjusted, resulting in poor applicability of the equipment and the chain.

[0004] Therefore, it is necessary to design a tight chain tail for a scraper to facilitate the adjustment of the length and tightness of the chain. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a chain-tightening tail for a scraper machine, which can achieve chain tightening by adjusting the position of the tail shaft group, and ensure that the chain running direction can still be tangent to the tail wheel pitch circle after the tail shaft group is moved, thereby ensuring that the chain is stably wound around the tail shaft group.

[0006] The utility model provides a chain-tightening tail for a scraper machine, comprising a tail frame, a sliding frame, a tail shaft group and a screw assembly, wherein:

[0007] The tail frame comprises a slot-shaped tail body, a middle plate is provided on the top of the tail body, a round tube crossbeam is provided below the middle plate and a gap is left between the two, and a U-shaped slideway and a nut box hole are provided on both side walls of one end of the tail body;

[0008] The sliding frame includes a slide plate, a longitudinal plate is provided at the lower side of one end of the slide plate, and shaft group clamping plates and screw connecting plates are provided at both ends of the longitudinal plate. The slide plate is movably mounted between the middle plate and the round tube cross beam, the shaft group clamping plate is parallelly arranged on the inner side of the tail body, and the screw connecting plate is vertically arranged in the U-shaped slideway;

[0009] The tail shaft assembly includes a tail shaft and a set of shaft clamping plates, with shaft assembly clamping columns at both ends of the tail shaft, the shaft assembly clamping columns are respectively matched with the shaft assembly clamping plates, the shaft clamping plates are arranged parallel to the outside of the tail body and connected to the shaft assembly clamping plates, and a limit plate is arranged at the other end of the shaft assembly clamping plates;

[0010] The lead screw assembly comprises a lead screw, one end of which is movably fitted with a lead screw connecting plate, the other end of which is threadedly fitted with a nut, the nut is arranged in a nut box hole, and the middle part of the lead screw is threadedly fitted with a lock nut.

[0011] Preferably, a screw head is provided at one end of the screw, a screw limiting groove is provided between the screw and the screw head, a screw rotation groove is horizontally provided on the screw connecting plate, a group of clamping plates are provided on the screw connecting plate, the screw head is movably mounted in the screw rotation groove, and the clamping plate is mounted with the screw limiting groove.

[0012] Preferably, the clamping plate is provided with a clamping plate groove, which is matched with the lead screw limiting groove.

[0013] Preferably, the splint groove is a semicircular hole.

[0014] Preferably, the shaft assembly clamping plate is provided with a U-shaped clamping groove, and the shaft assembly clamping columns are respectively mounted in the U-shaped clamping groove.

[0015] Preferably, the shaft group clamping column is provided with a shaft group clamping groove, and the shaft group clamping groove is assembled with the shaft clamping plate.

[0016] Preferably, the shaft clamping plate is connected to the shaft assembly clamping plate by bolts, and the limit plate is connected to the outer side of the side wall of the slot-shaped tail body by bolts.

[0017] Working principle of the utility model: the scraper machine of the utility model uses a tight chain type tail. When working, a tool is used to rotate the lead screw to make it move back and forth in a straight line. The lead screw drives the sliding frame to move in a straight line through the clamping plate. Since the tail shaft group is fixed on the sliding frame through the shaft clamping plate, the tail shaft group is driven to move back and forth in a straight line, and finally the goal of adjusting the tightness of the chain according to the chain length is achieved.

[0018] The beneficial effects of the utility model are as follows: the scraper machine of the utility model uses a tight chain type tail, which utilizes a screw spiral pair structure to achieve adjustable relative positions between the tail shaft group and the tail frame, and reciprocating movement, and through an inclined slideway consistent with the chain running angle, the pitch circle of the tail wheel at any position can be tangent to the chain running direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of a tight chain type tail of a scraper conveyor of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the tail frame of the middle machine;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the middle sliding frame;

[0022] Figure 4 for Figure 1 A partial enlarged view of middle A;

[0023] Figure 5 for Figure 1 Schematic diagram of the structure of the tail shaft of the middle machine;

[0024] Figure 6 for Figure 1 Schematic diagram of the structure of the middle lead screw;

[0025] Figure 7 for Figure 1 Schematic diagram of the structure of the middle splint.

[0026] In the figure: tail frame 1, tail body 11, middle plate 12, round tube crossbeam 13, U-shaped slideway 14, nut box hole 15; sliding frame 2, slide plate 21, longitudinal plate 22, shaft group clamping plate 23, U-shaped clamping groove 23-1, screw connecting plate 24, screw rotation groove 24-1; tail shaft group 3, tail shaft 31, shaft clamping plate 32, shaft group clamping column 33, shaft group clamping groove 33-1, limit plate 34; screw assembly 4, screw 41, nut 42, lock nut 43, screw head 44, screw limit groove 45, clamping plate 46, clamping plate groove 46-1. DETAILED DESCRIPTION

[0027] In order to make the technical solution of the present utility model easier to understand, the technical solution of the present utility model is now clearly and completely described in the form of specific embodiments in combination with the accompanying drawings.

[0028] Embodiment 1:

[0029] like Figures 1 to 7 As shown, the chain-tightening tail of the scraper conveyor of this embodiment comprises a tail frame 1, a sliding frame 2, a tail shaft assembly 3 and a screw assembly 4, wherein:

[0030] The tail frame 1 comprises a slot-shaped tail body 11, a middle plate 12 is provided on the top of the tail body 11, a round tube cross beam 13 is provided below the middle plate 12 with a gap between the two, and a U-shaped slide 14 and a nut box hole 15 are provided on both side walls of one end of the tail body 11;

[0031] The sliding frame 2 includes a slide plate 21, a longitudinal plate 22 is provided at the lower side of one end of the slide plate 21, and shaft group clamping plates 23 and screw connecting plates 24 are provided at both ends of the longitudinal plate 22. The slide plate 21 is movably mounted between the middle plate 12 and the round tube cross beam 13, the shaft group clamping plate 23 is arranged parallel to the inner side of the tail body 11, and the screw connecting plate 24 is vertically arranged in the U-shaped slideway 14;

[0032] The tail shaft assembly 3 includes a tail shaft 31 and a set of shaft clamping plates 32. Both ends of the tail shaft 31 are provided with shaft assembly clamping columns 33. The shaft assembly clamping columns 33 are respectively matched with the shaft assembly clamping plates 23. The shaft clamping plates 32 are arranged parallel to the outside of the tail body 11 and connected to the shaft assembly clamping plates 23. The other end of the shaft assembly clamping plates 23 is provided with a limit plate 34.

[0033] The screw assembly 4 includes a screw 41 , one end of which is movably mounted on the screw connecting plate 24 , and the other end of which is threadedly mounted with a nut 42 , which is disposed in the nut box hole 15 , and a lock nut 43 is threadedly mounted on the middle portion of the screw 41 .

[0034] Embodiment 2:

[0035] like Figures 1 to 7 As shown, the chain-tightening tail of the scraper conveyor of this embodiment comprises a tail frame 1, a sliding frame 2, a tail shaft assembly 3 and a screw assembly 4, wherein:

[0036] The tail frame 1 comprises a slot-shaped tail body 11, a middle plate 12 is provided on the top of the tail body 11, a round tube cross beam 13 is provided below the middle plate 12 with a gap between the two, and a U-shaped slide 14 and a nut box hole 15 are provided on both side walls of one end of the tail body 11;

[0037] The sliding frame 2 includes a slide plate 21, a longitudinal plate 22 is provided at the lower side of one end of the slide plate 21, and shaft group clamping plates 23 and screw connecting plates 24 are provided at both ends of the longitudinal plate 22. The slide plate 21 is movably mounted between the middle plate 12 and the round tube cross beam 13, the shaft group clamping plate 23 is arranged parallel to the inner side of the tail body 11, and the screw connecting plate 24 is vertically arranged in the U-shaped slideway 14;

[0038] The tail shaft assembly 3 includes a tail shaft 31 and a set of shaft clamping plates 32. Both ends of the tail shaft 31 are provided with shaft assembly clamping columns 33. The shaft assembly clamping columns 33 are respectively matched with the shaft assembly clamping plates 23. The shaft clamping plates 32 are arranged parallel to the outside of the tail body 11 and connected to the shaft assembly clamping plates 23. The other end of the shaft assembly clamping plates 23 is provided with a limit plate 34.

[0039] The screw assembly 4 includes a screw 41 , one end of which is movably mounted on the screw connecting plate 24 , and the other end of which is threadedly mounted with a nut 42 , which is disposed in the nut box hole 15 , and a lock nut 43 is threadedly mounted on the middle portion of the screw 41 .

[0040] A screw head 44 is provided at one end of the screw 41, a screw limiting groove 45 is provided between the screw 41 and the screw head 44, a screw rotation groove 24-1 is horizontally provided on the screw connecting plate 24, a group of clamping plates 46 are provided on the screw connecting plate 24, the screw head 44 is movably mounted in the screw rotation groove 24-1, and the clamping plates 46 are mounted with the screw limiting groove 45.

[0041] The clamping plate 46 is provided with a clamping plate groove 46 - 1 , which is matched with the lead screw limiting groove 45 .

[0042] The clamping plate groove 46 - 1 is a semicircular hole.

[0043] The shaft assembly clamping plate 23 is provided with a U-shaped clamping groove 23 - 1 , and the shaft assembly clamping columns 33 are respectively mounted in the U-shaped clamping groove 23 - 1 .

[0044] The shaft assembly clamping column 33 is provided with a shaft assembly clamping groove 33 - 1 , and the shaft assembly clamping groove 33 - 1 is assembled with the shaft clamping plate 32 .

[0045] The shaft clamping plate 32 is connected to the shaft assembly clamping plate 23 by bolts, and the limiting plate 34 is connected to the outer side of the side wall of the slot-shaped tail body 11 by bolts.

[0046] It should be noted that the embodiments described herein are only partial embodiments of the present invention, rather than all implementations of the present invention, and the embodiments are only exemplary, and their role is only to provide a more intuitive and clear way to understand the content of the present invention, rather than to limit the technical solutions described in the present invention. Without departing from the concept of the present invention, all other implementation methods that ordinary technicians in the field can think of without creative work, and other simple replacements and various changes to the technical solutions of the present invention, all belong to the protection scope of the present invention.

Claims

1. A chain-tightening tail for a scraper, characterized in that: It comprises a tail frame (1), a sliding frame (2), a tail shaft assembly (3) and a lead screw assembly (4), wherein: The tail frame (1) comprises a slot-shaped tail body (11), a middle plate (12) is provided on the top of the tail body (11), a round tube cross beam (13) is provided below the middle plate (12) and a gap is left between the two, and a U-shaped slideway (14) and a nut box hole (15) are provided on both side walls of one end of the tail body (11); The sliding frame (2) comprises a sliding plate (21), a longitudinal plate (22) is provided at the lower side of one end of the sliding plate (21), both ends of the longitudinal plate (22) are provided with an axis group clamping plate (23) and a screw connecting plate (24), the sliding plate (21) is movably mounted between the middle plate (12) and the round tube cross beam (13), the axis group clamping plate (23) is arranged parallel to the inner side of the tail body (11), and the screw connecting plate (24) is arranged vertically in the U-shaped slideway (14); The tail shaft assembly (3) comprises a tail shaft (31) and a set of shaft clamping plates (32). Both ends of the tail shaft (31) are provided with shaft assembly clamping columns (33). The shaft assembly clamping columns (33) are respectively matched with shaft assembly clamping plates (23). The shaft clamping plates (32) are arranged parallel to the outside of the tail body (11) and connected to the shaft assembly clamping plates (23). The other end of the shaft assembly clamping plates (23) is provided with a limit plate (34). The screw assembly (4) comprises a screw (41), one end of which is movably mounted on a screw connecting plate (24), and the other end of which is threadedly mounted on a nut (42), the nut (42) being arranged in a nut box hole (15), and the middle part of the screw (41) being threadedly mounted on a lock nut (43).

2. The chain-tightening tail for a scraper according to claim 1, characterized in that: A screw head (44) is provided at one end of the screw (41), a screw limit groove (45) is provided between the screw (41) and the screw head (44), a screw rotation groove (24-1) is horizontally provided on the screw connecting plate (24), a group of clamping plates (46) are provided on the screw connecting plate (24), the screw head (44) is movably mounted in the screw rotation groove (24-1), and the clamping plates (46) are mounted with the screw limit groove (45).

3. The chain-tightening tail for a scraper according to claim 2, characterized in that: The clamping plate (46) is provided with a clamping plate groove (46-1), and the clamping plate groove (46-1) is matched with the lead screw limiting groove (45).

4. The chain-tightening tail for a scraper according to claim 3, characterized in that: The clamping plate groove (46-1) is a semicircular hole.

5. The chain-tightening tail for a scraper according to claim 1, characterized in that: The shaft assembly clamping plate (23) is provided with a U-shaped clamping groove (23-1), and the shaft assembly clamping columns (33) are respectively mounted in the U-shaped clamping groove (23-1).

6. The chain-tightening tail for a scraper according to claim 5, characterized in that: The shaft group clamping column (33) is provided with a shaft group clamping groove (33-1), and the shaft group clamping groove (33-1) is assembled with the shaft clamping plate (32).

7. The chain-tightening tail for a scraper according to claim 1, characterized in that: The shaft clamping plate (32) is connected to the shaft assembly clamping plate (23) via bolts, and the limiting plate (34) is connected to the outer side of the side wall of the slot-shaped tail body (11) via bolts.

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