A flight bar machine tail baffle protection device

Abstract

The utility model relates to coal mine scraper conveyor fixing technical field provides a kind of scraper tail baffle protection device, in view of the problem that locking bolt failure is caused by coal mining vibration and push-pull beam push-pull of split baffle, vertical locking is realized by locating pin shaft through baffle panel and base upper cover plate in height direction;Width direction utilizes baffle vertical board and base side plate end face to form constraint by sticking together;Bottom surface is additionally provided with double-layer pad assembly with oval hole, and locating pin shaft penetrates pad to constitute integral torsion frame, the path of bolt rotation loosening and failure is blocked by mechanical constraint transfer of the device, and equipment safety and maintenance convenience are simultaneously improved.

Description

Technical Field

[0001] This utility model relates to the industrial coal industry, specifically a protective device for the tail end of a scraper conveyor. Background Technology

[0002] In fully mechanized coal mining faces, the tail baffle of the scraper conveyor adopts a split structure, consisting of a rail base panel, a push beam ear plate, and a perforated vertical plate. The tail base is fixed using T-bolts and lock nuts. However, the continuous vibration generated when the coal mining machine travels to the tail, combined with the repeated push-pull load of the push beam, causes the lock nuts to loosen and the T-bolts to fail in circumferential rotation. Under the coupled effect of these dual loads, the bolt fixing function is lost and difficult to detect in time, leading to the risk of the baffle falling off. This not only forces the coal mining machine to stop moving towards the tail, reducing mining efficiency, but also easily causes equipment derailment or safety accidents. Utility Model Content

[0003] To solve the above problems, this utility model discloses a tail baffle protection device for scraper conveyors.

[0004] The specific technical solution is as follows:

[0005] A tail baffle protection device for a scraper conveyor includes a tail base and a tail baffle assembly. The tail base includes a side plate and a top cover plate. The tail baffle assembly is fixed to the side plate of the tail base by T-bolts and locking nuts. The tail baffle assembly includes a height limiting unit, which is formed by a positioning pin, bolt, and nut on the tail baffle panel engaging with a hole in the top cover plate of the tail base. After the tail baffle panel and the top cover plate of the tail base are attached together, they are connected to the top cover plate of the tail base by positioning pins, bolts, and nuts.

[0006] Width limiting unit: It consists of the tail baffle upright plate and the end face of the tail base side plate, and is fixed by T-bolts and lock nuts;

[0007] Bottom width limiting unit: including a tail base pad plate added below the tail base, a baffle pad plate fixedly installed below the tail baffle assembly, and three corresponding pin holes on the tail base pad plate and the baffle pad plate respectively, which are connected by three limiting pins.

[0008] The tail baffle panel protrudes from the upper cover of the tail base and is welded to the upper end of the tail baffle upright plate via vertical ribs. The lower end of the tail baffle upright plate is welded perpendicularly to the baffle pad plate. The horizontal ribs are set parallel to the baffle pad plate and welded to the vertical ribs.

[0009] The pin hole of the tail base pad is an elliptical hole along the length of the scraper conveyor, and the pin hole of the baffle pad is also an elliptical hole along the length of the scraper conveyor.

[0010] The tail base plate has a groove structure. The upper surface of the groove structure is machined with a flat surface 3mm lower than the bottom plate of the tail base, forming the installation space for the tail baffle. The height of the groove structure is based on the center of the pin on the side of the tail base.

[0011] The tail base plate, tail baffle panel, and tail baffle upright are designed as a symmetrical structure with interchangeable left and right working surfaces.

[0012] The installation position of the limit pin avoids the original T-bolt position in both the height and length directions, and reserves space for bolt installation.

[0013] The machining datum for the pin holes of the tail base pad is the end face of the vertical plates on both sides of the tail base, and the machining datum for the pin holes of the baffle pad is the end face of the vertical plate of the tail baffle.

[0014] The advantages of this utility model are: This device eliminates the rotational freedom and failure problem of T-bolts by adding a limiting structure between the tail baffle and the base, combined with the pad assembly connected by the bottom pin shaft, the height limiting unit, the width limiting unit and the double pad pin shaft limiting working together; the elliptical pin shaft hole design of the tail base pad plate and the baffle pad plate allows for slight displacement and absorbs vibration and push-pull deformation stress; the interchangeable pad plate symmetrical structure simplifies the switching of working surfaces, the groove and reference surface design improves the machining accuracy and prevents over-definition phenomenon, the pin shaft disassembly and assembly do not require special tools in underground work, and the assembly and positioning method is simple. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 2 ;

[0017] Figure 3 This is a structural schematic diagram of the tailgate assembly.

[0018] Figure 4 A schematic diagram of the structure after removing the tailgate assembly;

[0019] Figure 5 This is a schematic diagram showing the positional relationship between the baffle pad, the tail base pad, and the tail base bottom plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] A tail baffle protection device for a scraper conveyor includes a tail base 2 and a tail baffle assembly 1. The tail base 2 includes a side plate 9 and a tail base cover plate 7. The tail baffle assembly 1 is fixed to the side plate 9 of the tail base 2 by T-bolts 10 and locking nuts 11. The tail baffle assembly 1 includes a height limiting unit: it is formed by a positioning pin 4, bolt 5, and nut 6 on the tail baffle panel 3 engaging with holes in the tail base cover plate 7. After the tail baffle panel 3 and the tail base cover plate 7 are attached together, the device is fixed by a positioning pin 4, bolt 5, and nut 6 engaging with holes in the tail base cover plate 7. Position pin 4, bolt 5, nut 6 are connected to the upper cover plate 7 of the tail base; Width limiting unit: the tail baffle upright plate 8 is attached to the end face of the tail base side plate 9 and fixed by T-bolt 10 and locking nut 11; Bottom width limiting unit: including tail base pad 12 added below the tail base 2, baffle pad 13 is fixedly installed below the tail baffle assembly 1, and the tail base pad 12 and baffle pad 13 are respectively provided with 3 corresponding pin holes and are connected by 3 limiting pins 14.

[0022] The tail baffle panel 3 protrudes from the upper cover plate 7 of the tail base and is welded to the upper end of the tail baffle upright plate 8 through the vertical rib 17. The lower end of the tail baffle upright plate 8 is welded vertically to the baffle pad plate 13. The horizontal rib 18 is set parallel to the baffle pad plate 13 and welded to the vertical rib 17.

[0023] The pin hole of the tail base pad 12 is an elliptical hole in the length direction of the scraper conveyor, and the pin hole of the baffle pad 13 is an elliptical hole in the length direction of the scraper conveyor.

[0024] The tail base plate 12 is provided with a groove structure. The upper surface of the groove structure is machined with a plane that is three millimeters lower than the tail base plate 16, forming the installation space for the tail baffle 1. The height of the groove structure is based on the center of the pin 15 on the side of the tail base.

[0025] The tail base plate 12, tail baffle panel 3, and tail baffle upright plate 8 are designed as a symmetrical structure with interchangeable left and right working surfaces.

[0026] The installation position of the limiting pin 14 avoids the original position of the T-bolt 10 in both the height and length directions, and reserves space for bolt installation.

[0027] The machining datum for the pin hole of the tail base pad 12 is the end face of the upright plate on both sides of the tail base, and the machining datum for the pin hole of the baffle pad 13 is the end face of the tail baffle upright plate 8.

[0028] The working principle of this utility model is as follows: When the vibration of the coal mining machine and the push-pull load of the pushing beam are applied to the tail baffle 1, the limiting structure of this device responds synchronously. In the height direction, the positioning pin 4 passes through the mating hole between the tail baffle panel 3 and the upper cover plate 7 of the tail base and locks it, suppressing vertical displacement. In the width direction, the end face of the tail baffle vertical plate 8 is tightly fitted with the side plate 9 of the tail base to constrain lateral movement. In the bottom surface, three limiting pins 14 pass through the elliptical holes of the baffle pad 13 and the tail base pad 12 to absorb the push-pull torque. At the same time, the long axis of the elliptical hole allows a small amount of sliding to release deformation stress, while the short axis maintains rigid constraint and blocks the failure path of the T-bolt 10.

Claims

1. A tail baffle protection device for a scraper conveyor, comprising a tail base (2) and a tail baffle assembly (1), the tail base (2) comprising a side plate (9) and a tail base cover plate (7), the tail baffle assembly (1) being fixed to the side plate (9) of the tail base (2) by T-bolts (10) and locking nuts (11), characterized in that: The tail baffle assembly (1) includes a height limiting unit: it is formed by the positioning pin (4), bolt (5), and nut (6) on the tail baffle panel (3) and the hole of the tail base cover plate (7); after the tail baffle panel (3) and the tail base cover plate (7) are attached together, they are connected together by the positioning pin (4), bolt (5), and nut (6); Width limiting unit: The tail baffle plate (8) is attached to the end face of the tail base side plate (9) and fixed by the T-bolt (10) and the locking nut (11); Bottom width limiting unit: includes a tail base pad (12) added below the tail base (2), and a baffle pad (13) fixedly installed below the tail baffle assembly (1). The tail base pad (12) and the baffle pad (13) are respectively provided with three corresponding pin holes and are connected by three limiting pins (14).

2. The scraper conveyor tail baffle protection device according to claim 1, characterized in that: The tail baffle panel (3) protrudes from the upper cover plate (7) of the tail base and is welded to the upper end of the tail baffle upright plate (8) through the vertical rib (17). The lower end of the tail baffle upright plate (8) is welded vertically to the baffle pad plate (13). The horizontal rib (18) is set parallel to the baffle pad plate (13) and welded to the vertical rib (17).

3. The tail baffle protection device of the scraper conveyor according to claim 1, characterized in that: The pin hole of the tail base pad (12) is an elliptical hole in the length direction of the scraper machine, and the pin hole of the baffle pad (13) is an elliptical hole in the length direction of the scraper machine.

4. The scraper conveyor tail baffle protection device according to claim 1, characterized in that: The tail base pad (12) is provided with a groove structure. The upper surface of the groove structure is machined with a plane that is 3mm lower than the tail base bottom plate (16), forming the installation space of the tail baffle assembly (1). The height of the groove structure is based on the center of the tail base side pin (15).

5. The scraper conveyor tail baffle protection device according to claim 1, characterized in that: The tail base plate (12), tail baffle panel (3), and tail baffle upright plate (8) are designed as a symmetrical structure with interchangeable left and right working surfaces.

6. The tail baffle protection device of the scraper conveyor according to claim 1, characterized in that: The installation position of the limiting pin (14) avoids the original T-bolt (10) position in both the height and length directions, and reserves space for bolt installation.

7. The tail baffle protection device of the scraper conveyor according to claim 1, characterized in that: The pin hole machining reference of the tail base pad (12) is the end face of the upright plate on both sides of the tail base, and the pin hole machining reference of the baffle pad (13) is the end face of the tail baffle upright plate (8).

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