A belt buckle

Abstract

The utility model provides a belt buckle, comprising a buckle body and two U-shaped nails, wherein the middle part of the buckle body is provided with a buckle ring part, the buckle ring part comprises a base plate and a convex rib, the cross section of the buckle ring part is composed of the base plate cross section and the convex rib cross section, and the convex rib cross section is located in the middle part of the upper side of the base plate cross section; the two ends of the buckle body are symmetrically provided with nail plate parts, each of which is composed of an extension of the buckle ring part and two wing parts, the cross section of the nail plate part is composed of the cross section of the buckle ring part and the cross sections of the two wings, and the cross sections of the two wings are symmetrically connected to the two sides of the base plate cross section in the cross section of the buckle ring part. When the belt buckle is in an unfolded state and in a state connected to a conveyor belt, the buckle body is completely symmetrical in front, back, left, and right directions, so that when the belt buckle and the conveyor belt are subjected to a tensile load, the force positions of the two nail feet on the buckle body are completely symmetrical with the upper, lower, left, and right forces of the buckle ring part, and the force is evenly distributed, which can improve the service life of the conveyor belt and the belt buckle.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a belt conveyor device, in particular to a belt buckle. Background Art

[0002] Belt buckles are connecting devices for conveyor belts, used to connect belts to belts, and are widely used on conveyor belts in mines (especially coal mines) to achieve long-distance mineral transportation. They are also widely used in other industries and occasions that require the use of conveyor belts. The global demand for various belt buckles is about 20 to 30 billion pieces per year. Among all belt buckles, there are not many types of belt buckles that can bear heavy loads, and there are even fewer with reasonable designs. In the prior art, the patent document with publication number CN105370796A discloses a conveyor belt fastener, whose buckle pages, buckle rings, nail holes and other parts are all in an asymmetric state, which will cause the conveyor belt and belt buckle to be in an uneven force state when subjected to tension, and additionally bear the lateral force caused by the uneven force, which causes skewness, and then damage to the conveyor belt and belt buckle, and a shorter service life. Utility Model Content

[0003] The utility model aims to provide a belt buckle, which can solve the technical problem of short service life of belt buckles in the prior art.

[0004] The utility model provides a belt buckle, comprising a buckle body and two U-shaped nails, each of the U-shaped nails has two nail feet, the buckle body is in an elongated strip shape, the middle part of the buckle body is set as a buckle ring part, the buckle ring part comprises a base plate and a convex rib, the buckle ring part is U-shaped curved, the convex rib is located on the outer side of the buckle ring part after the U-shaped curvature, the cross section of the base plate is a base plate cross section, the cross section of the convex rib is a convex rib cross section, the cross section of the buckle ring part is composed of the base plate cross section and the convex rib cross section, the convex rib cross section is located in the middle of the upper side of the base plate cross section, the base plate cross section is rectangular, the width of the convex rib cross section is smaller than the width of the base plate cross section, the upper part of the convex rib cross section is a rectangle with rounded corners on both sides, and the two sides of the lower part of the convex rib cross section are symmetrically transitionally connected with the two sides of the base plate cross section through an indented arc;

[0005] The two ends of the buckle body are symmetrically provided with nail plate parts, and any of the nail plate parts is composed of the extension of the buckle ring part in the length direction and the two wing parts symmetrically arranged on the front and rear sides thereof, and the cross section of the nail plate part is composed of the cross section of the buckle ring part and the cross sections of the two wing parts, and the cross sections of the two wing parts are symmetrically connected to the two sides of the cross section of the base plate;

[0006] Two nail holes are respectively arranged in any wing part, and the two nail holes are arranged along the length direction of the buckle body, and the nail holes in the front and rear wings are symmetrical;

[0007] The outer end surfaces of the two nail plate parts are symmetrically arranged as inclined surfaces, and the inclined surfaces at both ends of the buckle body after bending are extended and intersect at the outer side of the opening of the buckle body;

[0008] The nail feet of the two U-shaped nails are respectively inserted into the two nail holes in the front and rear wings of one nail plate part and point to the other nail plate part.

[0009] Furthermore, the cross section of any wing portion is kidney-shaped, and the end thereof faces the cross section of the rib.

[0010] The utility model also provides a method for manufacturing the above-mentioned belt buckle, comprising a step of extruding steel into a long strip and cutting it according to a set length to obtain an original buckle body, the cross-sectional shape of the long strip being the cross-sectional shape of the nail plate portion, after the step of obtaining the original buckle body is completed, the original buckle body is trimmed and punched, in the trimming and punching steps, the front and rear wings of the middle part of the original buckle body are symmetrically cut off to form a buckle ring portion, the original buckle bodies connected at both ends of the buckle ring portion respectively form nail plate portions, the nail plate portions are symmetrical on the left and right, two nail holes are respectively punched out at symmetrical positions in the front and rear wings of any nail plate portion, the two nail holes are arranged parallel to the length direction of the original buckle body, the nail holes in the two nail plate portions are symmetrical on the left and right, after the trimming and punching steps are completed, an inclined surface is respectively processed at the left end of the left nail plate portion and the right end of the right nail plate portion, and finally the buckle ring portion is bent into a U shape.

[0011] Compared with the prior art, the utility model has a positive and obvious effect. When the belt buckle is in the unfolded state and in the state connected to the conveyor belt, the buckle body is completely symmetrical in front, back, left and right. When the belt buckle and the conveyor belt are subjected to tensile loads, the force positions of the two nail feet on the buckle body are completely symmetrical with the upper, lower, left and right forces of the buckle ring part, and the forces are evenly distributed in opposite directions, which can increase the service life of the conveyor belt and the belt buckle. In addition, before the buckle ring part is trimmed, bent, and punched at both ends, the cross-sectional shape of the entire buckle body is equal. The two sides of the middle part of the buckle body are trimmed to form trimming grooves. After bending, the buckle ring part is naturally formed. In this way, there is no need to perform curling or folding at the buckle ring after trimming. The advantage of this is that the consistency of mechanical properties is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a first stereoscopic schematic diagram of a belt buckle of the utility model.

[0013] Figure 2 The utility model is a front view schematic diagram of a belt buckle.

[0014] Figure 3 This is a second stereoscopic schematic diagram of a belt buckle of the present utility model.

[0015] Figure 4 The utility model is a side view schematic diagram of a belt buckle.

[0016] Figure 5 The utility model is a top view of a belt buckle.

[0017] Figure 6 The utility model is a bottom view schematic diagram of a belt buckle in an unfolded state.

[0018] Figure 7 The utility model is a front view schematic diagram of a belt buckle in an unfolded state.

[0019] Figure 8 The utility model is a side view schematic diagram of a belt buckle in an unfolded state.

[0020] Fig. 9 The utility model is a top view schematic diagram of a belt buckle in an unfolded state.

[0021] Fig.10 for Figure 7 AA cross-sectional view of .

[0022] Fig.11 for Figure 7 BB cross-sectional view.

[0023] Fig.12 for Figure 7 Schematic diagram of CC cross-section.

[0024] Fig.13 The utility model is a three-dimensional schematic diagram of a belt buckle in use.

[0025] Fig.14 The utility model is a top view schematic diagram of a belt buckle in use.

[0026] Fig.15 The utility model is a front view schematic diagram of a belt buckle in use.

[0027] Fig.16 The utility model is a front cross-sectional schematic diagram of a belt buckle in use.

[0028] Fig.17 The utility model is a side view schematic diagram of a belt buckle in use.

[0029] Fig.18 The utility model is a side cross-sectional schematic diagram of a belt buckle in use. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with an embodiment, but the present invention is not limited to the embodiment. Any similar structure and similar changes of the present invention should be included in the protection scope of the present invention. The use of directions such as up, down, front, back, left, and right in the present invention is only for the convenience of clear description and is not a limitation on the technical solution of the present invention.

[0031] like Figure 1-Figure 18 As shown, a belt buckle of the utility model comprises a buckle body and two U-shaped nails 4, each of the U-shaped nails 4 has two nail feet 5, the buckle body is in the shape of an elongated strip, the middle part of the buckle body is set as a buckle ring part 6, the buckle ring part 6 comprises a base plate 1 and a convex rib 2, the buckle ring part 6 is U-shaped, the convex rib 2 is located on the outside of the buckle ring part 6 after the U-shaped bending, the cross section of the base plate 1 is a base plate cross section 12, the cross section of the convex rib 2 is a convex rib cross section 13, the cross section of the buckle ring part 6 is composed of the base plate cross section 12 and the convex rib cross section 13, the convex rib cross section 13 is located in the middle of the upper side of the base plate cross section 12, the base plate cross section 12 is rectangular, the width of the convex rib cross section 13 is smaller than the width of the base plate cross section 12, the upper part of the convex rib cross section 13 is a rectangle with rounded corners 8 on both sides, and the two sides of the lower part of the convex rib cross section 13 are symmetrically transitionally connected with the two sides of the base plate cross section 12 through an indented arc 9;

[0032] The two ends of the buckle body are symmetrically provided with nail plate parts, and any of the nail plate parts is composed of the extension of the buckle ring part 6 in its length direction and the two wing parts 14 symmetrically arranged on the front and rear sides thereof, and the cross section of the nail plate part is composed of the cross section of the buckle ring part 6 and the cross sections of the two wing parts 14, and the cross sections of the two wing parts 14 are symmetrically connected to the two sides of the base cross section 12;

[0033] Two nail holes 3 are respectively arranged in any wing 14, and the two nail holes 3 are arranged along the length direction of the buckle body, and the nail holes 3 in the front and rear wings 14 are symmetrical;

[0034] The outer end surfaces of the two nail plate parts are symmetrically arranged as inclined surfaces 10, and the inclined surfaces 10 at both ends of the buckle body after bending are extended and intersect at the outer side of the opening of the buckle body;

[0035] The nail feet 5 of the two U-shaped nails 4 are respectively inserted into the two nail holes 3 in the front and rear wings 14 of one nail plate part, and point to the other nail plate part.

[0036] Furthermore, the cross section of any wing portion 14 is kidney-shaped, and the end thereof faces the rib cross section 13 .

[0037] The utility model also provides a method for manufacturing the above-mentioned belt buckle, comprising a step of extruding steel into a long strip and cutting it according to a set length to obtain an original buckle body, the cross-sectional shape of the long strip is the cross-sectional shape of the nail plate portion, after the step of obtaining the original buckle body is completed, the original buckle body is trimmed and punched, in the trimming and punching steps, the front and rear wings of the middle part of the original buckle body are symmetrically cut off to form a buckle ring portion 6, the original buckle bodies connected at both ends of the buckle ring portion respectively form nail plate portions, the nail plate portions are symmetrical on the left and right, two nail holes 3 are punched out at symmetrical positions in the front and rear wings of any nail plate portion, the two nail holes 3 are arranged parallel to the length direction of the original buckle body, the nail holes 3 in the two nail plate portions are symmetrical on the left and right, after the trimming and punching steps are completed, a slope 10 is processed at the left end of the left nail plate portion and the right end of the right nail plate portion, and finally the buckle ring portion 6 is bent into a U shape.

[0038] Specifically, the extrusion, trimming, punching, punching, beveling and bending methods all adopt mechanical processing methods in the prior art.

[0039] The working principle of this embodiment:

[0040] like Figure 1 , Fig.12 As shown, when the belt buckle is in the unfolded state and in the state connected to the conveyor belt, the buckle body is completely symmetrical front to back and left to right. When the belt buckle and the conveyor belt are subjected to tensile loads, the force positions of the two U-shaped nails 4 (four nail feet 5, eight nail holes 3) on the buckle body are completely symmetrical with the upper and lower left and right forces of the buckle part 6 (at the flexible shaft 11), and the forces are evenly distributed in opposite directions, which can increase the service life of the conveyor belt and the belt buckle.

[0041] In addition, before the buckle ring 6 is trimmed, bent, and punched at both ends, the cross-sectional shape of the entire buckle body is equal. The middle and sides of the buckle body are trimmed to form trimming grooves 7, and after bending, the buckle ring 6 is naturally formed. In this way, after trimming, there is no need to perform curling or folding at the buckle ring, which has the advantage of ensuring consistency in mechanical properties.

[0042] The unique shape design of the buckle part 6 is a comprehensive consideration of the rationality of the buckle assembly, the rationality of the buckle part 6 and the butt joint of the two conveyor belts, etc., as described in detail below.

[0043] like Fig.12 As shown, when the left and right belt buckles are docked, the width of the rib 2 is smaller than the width of the base plate 1, and a rounded corner 8 and an inner concave arc 9 are provided to play a guiding role, so that the left and right buckle bodies can be docked and inserted more smoothly, reducing the assembly connection time and reducing the on-site labor intensity.

[0044] like Fig.12As shown, after the belt buckle is connected to the conveyor belt, the wider part below the rib 2 (i.e., the base plate 1) contacts the flexible shaft 11, and the rib 2 is located on the other side of the buckle body and does not contact the flexible shaft 11. The width of the base plate 1 is greater than the width of the rib 2, which can increase the contact area of ​​the flexible shaft 11, reduce the contact pressure between the buckle body and the flexible shaft 11, and extend the service life of the product.

[0045] At the same time, the design of being narrow at the top and wide at the bottom, that is, the width of the base plate 1 is greater than the width of the rib 2, the base plate 1 can reduce the gap between the two belt buckles after they are connected and inserted, thus effectively reducing the leakage of coal dust at this point.

[0046] The design of narrow top and wide bottom can easily adapt to the deformation requirements of the conveyor belt during operation. Because after the conveyor belt is loaded with coal or other minerals, when it runs on the bracket roller, the cross section of the conveyor belt is similar to the inverted trapezoidal shape of the riverbed, or a concave arc shape. Then, the belt buckles installed on the conveyor belt are equivalent to being arranged along the inverted trapezoid (or arc). This structural design of narrow top and wide bottom effectively avoids or reduces the damage caused by mutual extrusion between the buckle bodies.

[0047] The convex rib 2 on the belt buckle makes the entire buckle body less likely to be worn during the operation of the conveyor belt, effectively extending the service life of the product.

[0048] The surface of the buckle body transitions to the belt surface through the inclined surface 10, so that when the belt passes through the roller and the drum during operation, various impacts are reduced, and possible pulling, scratching and pulling are reduced. At the same time, the belt buckle also reduces the scratching damage to the belt cleaner and reduces the operating noise.

Claims

1. A belt buckle, characterized in that: The buckle body comprises a buckle body and two U-shaped nails, each of which has two nail feet. The buckle body is in the shape of an elongated strip, and the middle part of the buckle body is set as a buckle ring part, which comprises a base plate and a convex rib. The buckle ring part is U-shaped and bent, and the convex rib is located on the outer side of the buckle ring part after the U-shaped bending. The cross section of the base plate is the base plate cross section, and the cross section of the convex rib is the convex rib cross section. The cross section of the buckle ring part is composed of the base plate cross section and the convex rib cross section. The convex rib cross section is located in the middle of the upper side of the base plate cross section. The base plate cross section is rectangular, and the width of the convex rib cross section is smaller than the width of the base plate cross section. The upper part of the convex rib cross section is a rectangle with rounded corners on both sides, and the two sides of the lower part of the convex rib cross section are symmetrically connected to the two sides of the base plate cross section through an indented arc. The two ends of the buckle body are symmetrically provided with nail plate parts, and any of the nail plate parts is composed of the extension of the buckle ring part in the length direction and the two wing parts symmetrically arranged on the front and rear sides thereof, and the cross section of the nail plate part is composed of the cross section of the buckle ring part and the cross sections of the two wing parts, and the cross sections of the two wing parts are symmetrically connected to the two sides of the cross section of the base plate; Two nail holes are respectively arranged in any wing part, and the two nail holes are arranged along the length direction of the buckle body, and the nail holes in the front and rear wings are symmetrical; The outer end surfaces of the two nail plate parts are symmetrically arranged as inclined surfaces, and the inclined surfaces at both ends of the buckle body after bending are extended and intersect at the outer side of the opening of the buckle body; The nail feet of the two U-shaped nails are respectively inserted into the two nail holes in the front and rear wings of one nail plate part and point to the other nail plate part.

2. A belt buckle according to claim 1, characterized in that: The cross section of any wing is kidney-shaped, and the end thereof faces the rib cross section.

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