Tongue plate fastening device of scraper conveyor

Abstract

The utility model belongs to the field of scraper conveyors, and particularly relates to a tongue plate fastening device of a scraper conveyor. Comprising a headstock, a tongue plate and a bolt, a bolt clamping groove with a convex section is formed in the headstock, a round bolt hole is formed in the tongue plate, the lower end of the bolt is clamped in the bolt clamping groove of the headstock, a screw of the bolt penetrates into the bolt hole of the tongue plate, and a nut is connected to the screw to lock the tongue plate and the headstock. The bolt comprises a screw rod, a supporting block and a base from top to bottom; the supporting block is provided with two planes which are in sliding fit with the groove walls of the narrow grooves in the upper portions of the bolt clamping grooves respectively, and the base is clamped in the wide grooves in the lower portions of the bolt clamping grooves. According to the tongue plate fastening device of the scraper conveyor, the headstock is firmly connected with the tongue plate, a good protection effect is achieved on a bolt connecting hole of the headstock of the scraper conveyor, smooth transportation of coal on a coal face is guaranteed, and underground coal output efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the scraper conveyor field, concretely relates to a tongue plate fastening device of scraper conveyor. BACKGROUND

[0002] The SGZ880 / 800 scraper conveyor head transmission part mainly comprises a head transmission device, a head frame, a chain wheel assembly, a tongue plate and a chain extractor, wherein the head transmission device is mainly used for driving the operation of the chain wheel assembly to control the operation of the scraper chain, completes the transportation of the coal on the working face of the underground coal mining machine, the head frame is used for installing the chain wheel assembly, the tongue plate and the chain extractor, and the chain extractor is used for smoothly engaging and separating the chain of the scraper chain and the chain wheel, and the tongue plate is mainly used for fixing the chain extractor and the chain wheel assembly.

[0003] As shown in the accompanying drawings Figure 1 The head frame and the tongue plate of the original SGZ880 / 800 scraper conveyor are fastened and connected by M24 square head bolts, the square head of the square head bolt is pushed into the lower wide groove of the convex bolt clamping groove, the screw rod of the square head bolt is located in the upper narrow groove of the convex bolt clamping groove, and a gap is left between the screw rod of the square head bolt and the upper narrow groove of the convex bolt clamping groove, so that the transverse shear force cannot be resisted, therefore, only the 6mm-thick square head of the square head bolt is in contact with the lower wide groove of the convex bolt clamping groove to resist the transverse shear force, the lap size is small, and when the scraper chain moves to the position of the head chain wheel, the stress point of the connection is in the square head size, and long-time operation can cause the convex bolt clamping groove of the head frame of the scraper conveyor to be abnormally worn, so that the equipment cannot be effectively protected. UTILITY MODEL CONTENTS

[0004] The utility model discloses a convex bolt clamping groove on the head frame.

[0005] The utility model provides the following technical scheme: a tongue plate fastening device of scraper conveyor, including head frame, tongue plate and bolt, the head frame is opened with the bolt clamping groove of " convex " section, the tongue plate is opened with the bolt hole of round, the lower end of bolt is connected in the bolt clamping groove of head frame, the screw rod of bolt is passed into the bolt hole of tongue plate, and the screw rod is connected nut and is locked tightly with head frame;

[0006] The bolt comprises a screw rod, a supporting block and a base from top to bottom; the supporting block has two planes that are respectively slidably attached to the groove walls of the upper narrow grooves of the bolt clamping groove, and the base is clamped in the lower wide groove of the bolt clamping groove.

[0007] Further, the support block and the base are cuboids.

[0008] Further, the height of the support block is equal to the depth of the upper narrow slot of the bolt clamping groove.

[0009] Further, the height of the base is equal to the depth of the lower wide slot of the bolt clamping groove.

[0010] Further, the two ends of the support block and the base in the length direction are aligned, and the screw rod is located at one end of the support block.

[0011] Further, the length of the support block and the base is equal to the length of the bolt clamping groove.

[0012] Compared with the prior art, the advantages of the utility model lie in that:

[0013] The tongue plate fastening device of the scraper conveyor provided by the utility model is characterized in that a support block is added to the fastening bolt between the tongue plate and the machine head frame, the bolt is composed of a screw rod, a support block and a base, the screw rod is used for fastening the tongue plate and the machine head frame, the support block is used for protecting the screw rod, and the base is used for clamping the "convex" bolt clamping groove of the machine head frame. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is an assembly diagram of the tongue plate and the machine head frame.

[0015] Figure 2 It is a schematic view of the bolt.

[0016] Figure 3 It is a schematic view of the machine head frame.

[0017] Figure 4 It is a connection diagram of the tongue plate and the machine head frame.

[0018] Figure 5 It is a schematic view of the bolt clamping groove.

[0019] In the diagram: 1-bolt; 1.1-screw; 1.2-support block; 1.3-base; 2-tongue plate; 2.1-bolt hole; 3-head frame; 4-bolt slot; 4.1-upper narrow slot; 4.2-lower wide slot; 5-nut. Detailed Implementation

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] like Figures 1-5 As shown: A tongue fastening device for a scraper conveyor includes a head frame 3, a tongue plate 2, and a bolt 1. The head frame 3 has a bolt slot 4 with a "convex" cross-section. The tongue plate 2 has a circular bolt hole 2.1. The bolt hole 2.1 is a stepped hole. The lower small hole mates with the screw 1.1 of the bolt 1, and the upper large hole is used to place a nut 5. The lower end of the bolt 1 is engaged in the bolt slot 4 of the head frame 3. The screw 1.1 of the bolt 1 passes through the bolt hole 2.1 of the tongue plate 2. The nut 5 is connected to the screw 1.1 to lock the tongue plate 2 and the head frame 3.

[0022] Bolt 1 comprises, from top to bottom, a screw 1.1, a support block 1.2, and a base 1.3. The support block 1.2 has two planes that slide against the upper narrow groove 4.1 of the bolt slot 4, and the base 1.3 is secured within the lower wide groove 4.2 of the bolt slot 4. When the tongue plate 2 is fastened to the head frame 3, the addition of the support block 1.2 changes the stress point of bolt 1, thus providing good protection for the bolt slot 4 on the head frame 3. When there is a lateral shear force between the tongue plate 2 and the head frame 3, the force transmitted from the tongue plate 2 to the bolt 1 is applied to the bolt slot 4 of the head frame 3 through the support block 1.2. Since the support block 1.2 contacts the upper narrow groove 4.1 of the bolt slot 4 through two planes, the contact area is increased, preventing bolt 1 from damaging the head frame 3. Furthermore, the tongue plate 2, as a consumable part, is easy to replace.

[0023] The support block 1.2 and the base 1.3 are cuboids. The height of the support block 1.2 is equal to the depth of the upper narrow groove 4.1 of the bolt slot 4. The height of the base 1.3 is equal to the depth of the lower wide groove 4.2 of the bolt slot 4.

[0024] The two ends of the support block 1.2 and the base 1.3 are aligned along their length, and the screw 1.1 is located at one end of the support block 1.2. The length of the support block 1.2 and the base 1.3 is equal to the length of the bolt slot 4.

[0025] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tongue plate fastening device of a flight conveyor, comprising a head frame (3), a tongue plate (2) and a bolt (1), the head frame (3) is provided with a bolt clamping groove (4) with a "convex" cross section, the tongue plate (2) is provided with a circular bolt hole (2.1), the lower end of the bolt (1) is clamped in the bolt clamping groove (4) of the head frame (3), the screw rod (1.1) of the bolt (1) penetrates into the bolt hole (2.1) of the tongue plate (2), and the screw rod (1.1) is connected with a nut (5) to lock the tongue plate (2) and the head frame (3). characterized in that The bolt (1) comprises a screw rod (1.1), a support block (1.2) and a base (1.3) from top to bottom; the support block (1.2) has two flat surfaces respectively slidingly abutting the groove walls of the upper narrow groove (4.1) of the bolt clamping groove (4), and the base (1.3) is clamped in the lower wide groove (4.2) of the bolt clamping groove (4).

2. A flight bar fastening device for an apron conveyor as claimed in claim 1, characterised in that: The support block (1.2) and the base (1.3) are cuboids.

3. A flight bar fastening device for an apron conveyor as claimed in claim 2, characterised in that: The height of the support block (1.2) is equal to the depth of the upper narrow groove (4.1) of the bolt clamping groove (4).

4. A flight bar fastening device for an apron conveyor as claimed in claim 2, wherein: The height of the base (1.3) is equal to the depth of the lower wide groove (4.2) of the bolt clamping groove (4).

5. A flight bar fastening device for a flight bar conveyor as defined in claim 2 wherein: The two ends of the support block (1.2) and the base (1.3) in the length direction are aligned, and the screw rod (1.1) is located at one end of the support block (1.2).

6. A flight bar fastening device for a flight bar conveyor as claimed in claim 5, characterised in that: The length of the support block (1.2) and the base (1.3) is equal to the length of the bolt clamping groove (4).

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