Chain lock for use in mining or conveying technology

Abstract

The invention relates to a chain lock (1) for mining or conveying technology, comprising two lock halves (2, 3) which are designed as lock bodies which are C-shaped in the side view and which can be plugged into each other by means of a leg in the longitudinal direction thereof and can be locked to each other by means of a locking device which passes through the leg. The leg is formed in a circumferential shape in a cross-section at the contact surfaces of the two leg parts.

Description

Technical Field

[0001] The present invention relates to a chain lock for use in mining or conveying technology according to the features in the preamble of claim 1. Background Technology

[0002] Chain link links are specifically designed for heavy-duty round steel chains, such as those used in underground mining. It is well known that disassembly after use can be difficult for flat and Kent-designed chain links conforming to DIN 22258-1 and DIN 22258-2 standards, because long clamping pins can corrode into the links, extending obliquely into the holes of the opposing legs and bridges of the two link halves. Furthermore, the load on the two link halves of the chain link can subject the clamping pins and the bridges located between the link halves to shear stress, making it even more difficult to drive the clamping pins out of the elongated holes. Additionally, a long mandrel is required to drive the clamping pins out, but this mandrel is subjected to strong bending stresses during the drive process, and its capacity is limited.

[0003] The Kent lock known in DE-PS201 224 has been further developed with various implementations. In a further development according to DE90 10 317 U, a chain link is proposed, particularly for high-performance round steel chains, in which a locking ball is used as the locking element, which can be secured in the locked position by a clamping pin driven transversely to the link plane. A relatively short clamping pin can be used, and even if the clamping pin rusts in the hole of the bridge, it can be easily driven from the bridge to the other side using a correspondingly short and flexible mandrel. This simplifies assembly and disassembly. However, its disadvantage is increased manufacturing workload and the need for additional components: the locking ball, which increases the variety of parts. This disadvantage also exists in the chain link disclosed in DE 19652 262C2, where separate locking elements are used instead of locking balls, which are interconnected by pivot pins passing through the bridge member. By rotating 90°, the locking element engages with a guide surface on the link's latch leg, thereby securing the bridge member and preventing it from falling off the chain link. The position of the ring element is fixed by a locking pin driven parallel to the pivot axis.

[0004] Furthermore, a chain link is known from DE 20 2006 016 032 U1, in which two link latches connected by their legs are locked by a bridge between the legs that are laterally inserted into the link latches. Depending on the size of the chain, these links and the link latches can weigh tens of kilograms. Therefore, both when assembling and disassembling the chain link, the chain link and the chain extending from both sides of the chain link must be lifted and rotated together to drive the bridge out. A similar chain lock is also disclosed in DE 20 2012 103 455 U1.

[0005] Furthermore, a chain lock is known from DE 10 2009 004 266 A1, in which C-shaped latch bodies are pushed into each other in their longitudinal direction. A center member is inserted between the latch bodies and a locking device for locking the chain lock is inserted transversely to the longitudinal direction of the chain. Summary of the Invention

[0006] The object of this invention is to improve the breaking strength of chain locks known in the prior art while using easily handled assembly and locking techniques.

[0007] According to the invention, the above objective is achieved by a chain lock according to the invention having the features of claim 1. Advantageous design variations are described in the dependent claims.

[0008] Chainlocks are particularly suitable for mining or conveying technologies. They consist of two locking halves, designed as a C-shaped locking body when viewed from the side. The locking halves engage with each other via their C-shaped legs in the longitudinal direction of the chainlock or the respective locking halves. The legs are designed to be complementary or corresponding to each other. A locking device is then inserted through the legs. This locking device extends transversely to the longitudinal direction or the longitudinal direction of the chain. The locking device then locks the chainlock.

[0009] According to the present invention, the chain lock is characterized in that the legs are formed in a circumferential shape in the cross-section of the surfaces of the two leg portions that abut each other. Therefore, the abutting portions of the legs have a curved or circular orientation in their cross-section, wherein the cross-section also extends transversely to the longitudinal direction or transversely to the longitudinal direction of the chain. In the sense of the invention, "circumferential" does not necessarily mean circular, but can also have a circular or curved orientation, thus having a varying radius. Specifically, these circumferentially extending contact surfaces are produced by circular milling, i.e., circular milling. Therefore, the usable contact surface of the abutting or contacting surfaces of the two leg portions is larger than that of a straight-extending surface. This increases the breaking strength of the chain lock according to the invention. The corresponding surface normal of the circumferential surface is particularly preferably always perpendicular to the longitudinal direction. Therefore, the curvature of the circumferential surface extends around the longitudinal direction or longitudinal axis of the leg.

[0010] In a preferred design variation, one leg of the C-shaped locking half is designed as a bridge-like extension, while the second leg is designed as a fork-like extension. The locking halves are essentially designed with the two halves arranged symmetrically, such that the bridge-like extension of the first locking half engages with the fork-like extension of the second locking half, and vice versa. The circumferential surfaces are specifically designed to correspond to or complement each other. Specifically, the bridge-like extension has an upper and lower side extending in a circumferential shape. On the fork-like extension, the two inner sides are also circumferential, complementing the circumferential surface of the bridge-like extension. The outer sides of the fork-like extensions of the locking halves can also be circumferential, or they can be flat.

[0011] In an advantageous improvement of the invention, shoulders may extend along the longitudinal direction, i.e., in the longitudinal section, on both the bridging extension and the fork extension. The shoulder or end transition portion of the bridging extension or the valley transition portion of the fork extension is rounded or has a radius in the longitudinal section.

[0012] The locking element is specifically designed as a pin or bolt. Particularly preferably, two bolts are arranged transversely to the longitudinal direction. The bolts themselves are spaced parallel to each other. The bolts penetrate the legs, particularly the center member. For securing the bolts themselves, clamping sleeves or other fixing devices can be used. For this purpose, the pin is specifically grooved around its perimeter. By inserting the clamping sleeve into the center member, the clamping sleeve can at least partially engage with the groove. Attached Figure Description

[0013] Further advantages, features, characteristics, and aspects of the invention are the subject of the following description. Preferred design variations are illustrated in the diagrams. These contribute to an understanding of the invention. In the accompanying drawings:

[0014] Figure 1 A perspective view of the chain lock according to the present invention is shown;

[0015] Figure 2 A side view of the chain lock is shown;

[0016] Figure 3 A perspective view of the lock half is shown;

[0017] Figure 4 A front view of the lock half is shown;

[0018] Figure 5 It shows along Figure 2 The sectional view of section line BB;

[0019] Figure 6 It shows along Figure 2 The sectional view of section line CC.

[0020] In the accompanying drawings, the same reference numerals are used for the same or similar parts, even though repeated descriptions have been omitted for simplicity. Detailed Implementation

[0021] Figure 1 and Figure 2 The diagram shows a perspective view and a side view of the chain lock. The chain lock 1 has two locking halves 2 and 3, which are arranged symmetrically in this example. Each locking half 2 and 3 is designed as a C-shaped latch body. Each C-shaped latch body has a bridge extending longitudinally. Each locking half 2 and 3 has a bridge designed as a bridge-shaped extension 4 and a fork-shaped extension 5. The fork-shaped extension 5 surrounds the bridge-shaped extension 4. Thus, the locking halves 2 and 3 are locked or pushed into each other longitudinally. For locking, a locking device in the form of a pin 6 is inserted through the legs or the extensions 4 and 5 of the legs. The pin 6 is arranged transversely to the longitudinal direction. In addition, a center member 7 is inserted. The center member 7 also has a receiving portion for a clamping sleeve 8. Each pin 6 has a circumferential groove 9. The clamping sleeve 8 is at least partially engaged in the groove 9, so that the pin 6 is fixed in place transversely to the longitudinal direction.

[0022] The basic idea of ​​this invention is now as follows: Figure 3 As shown, especially as Figure 4 As shown, Figure 4 yes Figure 3 The front view. The outer side surface and inner side surface or contact surface 10, 11 of the bridging extension 4 extend circumferentially in its cross-section. This forms an arcuate or circular orientation. Conversely, the inner and outwardly pointing surfaces 12, 13 of the forked extension 5 also extend circumferentially, i.e., curved. Compared to flat or horizontal surfaces, the contact surfaces of the bridging extension 4 and the forked extension 5 are enlarged in cross-section, which, according to the invention, can lead to greater fracture strength. A stepped shoulder 14 is formed in the longitudinal direction. The stepped shoulder 14 itself has a radial or curved orientation, specifically as follows: Figure 2 As shown. Specifically, according to Figure 4 It is clear that the surface was created by circular milling.

[0023] Figure 5 and Figure 6 They respectively show along Figure 2 The cross-sections of lines BB and CC are shown here. As shown, different radii are formed on the circumferential contact surface due to the stepped shoulders 14 of the cross-sections BB and CC.

[0024] The stepped shoulder 14 allows for good load distribution within the bridge-like or forked profile of the leg. Different radii of the circular milling allow for better absorption of lateral forces acting on the lock.

[0025] 1-Chain lock

[0026] 2-lock half

[0027] 3-Lock half

[0028] 4-Bridge-shaped extension

[0029] 5-Forked extension

[0030] 6-Locking element / pin

[0031] 7-Center Component

[0032] 8-Clamping sleeve

[0033] 9-groove

[0034] 10-4 external contact surface

[0035] 11-4 built-in contact surface

[0036] 12-5 inward-pointing face

[0037] 13-5 outward-pointing face

[0038] 14-Staircase Shoulder

[0039] L - Longitudinal direction

Claims

1. A chainlock (1) for mining or conveying technology, comprising two locking halves (2, 3), the two locking halves being designed as C-shaped locking bodies in a side view, the locking halves being interlocked with each other via legs along their longitudinal direction (L), and being lockable to each other by locking devices passing through the legs, characterized in that, The support leg is formed in a circular shape in the cross-section of the two support leg portions that abut against each other.

2. The chain lock (1) according to claim 1, characterized in that, The locking device passes laterally through the support leg, parallel to the chain.

3. The chain lock (1) according to claim 1 or 2, characterized in that, The center piece (7) is inserted into the locking halves (2, 3) that engage with each other, wherein the center piece (7) is penetrated by the locking device.

4. The chain lock (1) according to any one of the preceding claims, characterized in that, The outrigger has a straight direction in the longitudinal direction of the chain.

5. The chain lock (1) according to any one of the preceding claims, characterized in that, One leg of one of the locking halves has a bridge-shaped extension (4) extending in the longitudinal direction, and the second leg of the locking half (2) has a forked extension (5), such that the locking halves (2, 3) are arranged symmetrically, and the bridge-shaped extension (4) of one locking half (3) engages with the forked extension (5) of the other locking half.

6. The chain lock (1) according to any one of the preceding claims, characterized in that, At least one shoulder is formed in the longitudinal direction on the bridge-shaped extension (4) and / or the fork-shaped extension (5).

7. The chain lock (1) according to any one of the preceding claims, characterized in that, The locking device is formed by at least one pin (6), preferably two pins, which are inserted transversely to the longitudinal direction through the leg and, in particular, through the center member (7).

8. The chain lock (1) according to any one of the preceding claims, characterized in that, A clamping sleeve (8) is inserted into the center member (7), wherein the clamping sleeve (8) locks the pin (6), specifically engaging in a groove surrounding the pin (6).

9. The chain lock (1) according to any one of the preceding claims, characterized in that, The bridging extension (4) is formed as a partially encircling circumference in the cross-section at the upper and lower sides.

10. The chain lock (1) according to any one of the preceding claims, characterized in that, The fork-shaped extension (5) is formed in a partially circumferential shape in the cross-section of the fork-shaped extension on the inner surface (12).

11. The chain lock (1) according to any one of the preceding claims, characterized in that, In the longitudinal section, the bridging extension (4) is rounded at its end in the longitudinal direction.

12. The chain lock (1) according to any one of the preceding claims, characterized in that, The bridge-shaped extension (4) and the fork-shaped extension (5) are rounded at the corresponding step shoulders (14) in the longitudinal direction (L).

13. The chain lock (1) according to any one of the preceding claims, characterized in that, The cross-sections of the two support legs extend transversely to the longitudinal direction (L) or the longitudinal direction of the chain.

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