A mining cable

Abstract

The present invention relates to the technical field of cables, and specifically discloses a mining cable, comprising a cable, a drag chain shell and a plurality of limit clamps, wherein the drag chain shell comprises a plurality of drag chain sections hinged in sequence, the limit clamps are installed in the drag chain sections at equal intervals, the limit clamps comprise a rotating frame whose right end is hinged at the bottom of the drag chain section, the left side of the rotating frame is slidably and rotatably connected to the bottom of the adjacent drag chain section, a wire clamp for fixing the cable is installed in the middle of the rotating frame, the right end of the drag chain shell is connected to the fixed end of the equipment, and the left end is connected to the mobile end of the equipment, when the drag chain section is bent, the rotating frame is rotated clockwise, so that the cable is lifted at the bend and does not contact the drag chain shell, and in the bending section, the cable does not contact the inner wall of the drag chain section, thereby avoiding relative friction between the cable and the drag chain section and increasing the service life of the cable, and therefore the cable can be applied to the situation where the mobile end of the equipment frequently reciprocates.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and in particular to a mining cable. Background Art

[0002] The drag chain cable includes an inner cable and an outer drag chain. When working, the inner cable will move back and forth synchronously with the outer drag chain. During the movement, the inner cable can avoid wear and tear, so it is called a drag chain cable. It is also commonly called a drag cable or a tank chain cable. In situations where equipment units need to move back and forth, in order to prevent the cables from getting entangled, worn, pulled off, hung and scattered, the cables are often placed in cable drag chains to protect the cables, and the cables can also move back and forth with the drag chain.

[0003] The Chinese patent document with authorization announcement number CN220254104U discloses a drag chain cable, including a drag chain body and several cables, the drag chain body includes several chain links and joints, the several chain links are movably connected in sequence, two of the joints are respectively connected to the chain links at the ends, the cables are inserted in the drag chain body, the chain links include side plates, connecting plates, wire tying plates, pins and torsion springs, two of the connecting plates are arranged between the two side plates, the lower ends of the wire tying plates are movably connected to the side plates through pins, the torsion springs are sleeved on the pins, and the two ends are respectively connected to the wire tying plates and the connecting plates at the lower ends, the wire tying plates rotate around the pins, and several comb teeth are arranged on the surface of the wire tying plates. The flippable wire tying plates are used to straighten the cables passing through the chain links to prevent the cables from being cross-entangled in the chain links during dragging, which makes subsequent maintenance difficult, and the wire tying plates are flippable, which is very convenient when the cables are assembled and threaded, and will not cause obstruction to the cables, reducing the difficulty of threading.

[0004] When the equipment is working, the drag chain is driven to move back and forth. The drag chain relies on friction to move the inner cable. During long-term use, the frequent movement of the drag chain will cause serious wear on the outer sheath of the cable. Summary of the invention

[0005] The present invention provides a mining cable, aiming to solve the problem in the related art that the outer sheath of the cable is severely worn due to the frequent movement of the drag chain.

[0006] A mining cable comprises a cable and a drag chain housing, and also comprises a plurality of limit clamps. The drag chain housing comprises a plurality of drag chain sections hinged in sequence, and the limit clamps are installed in the drag chain sections at equal intervals. The limit clamp comprises a rotating frame with a right end hinged at the bottom of the drag chain section, and the left side of the rotating frame is slidably and rotatably connected to the bottom of the adjacent drag chain section. A wire clamp for fixing the cable is installed in the middle of the rotating frame. The right end of the drag chain housing is connected to the fixed end of the equipment, and the left end is connected to the movable end of the equipment. When the drag chain section is bent, the rotating frame is rotated clockwise, so that the cable is lifted at the bend and does not contact the drag chain housing.

[0007] The effect is that when the drag chain section is bent, the rotating frame rotates clockwise, so that the wire clamp rotates clockwise relative to the right drag chain section. Since the movement path of the wire clamp is an arc, it can avoid pulling the cable and reduce the tension on the cable caused by the movement of the clamping part. At the same time, this part of the cable moves upward without contacting the drag chain section. Therefore, in the bending section, the cable does not contact the inner wall of the drag chain section, avoiding relative friction between the cable and the drag chain section.

[0008] Preferably, the top of the drag chain section is open, and a cover plate is clamped at the opening, so that the threading and fixing of the cables are convenient by providing the cover plate.

[0009] Preferably, a vertical slide groove is provided on the front and rear inner walls of the drag chain section, and the top of the slide groove is open. A rotating shaft adapted to the slide groove is provided at the right end of the rotating frame, and a limiting strip adapted to the slide groove is provided on the bottom surface of the cover plate. When the cover plate is buckled on the drag chain section, the limiting strip limits the rotating shaft to the bottom end of the slide groove, and the position of the rotating shaft can be limited by the cooperation of the limiting strip and the slide groove, thereby facilitating assembly and disassembly.

[0010] Preferably, a limit groove along the horizontal direction is opened at the bottom of the drag chain section, and the front, rear and right sides of the limit groove are open. A connecting shaft is fixedly connected to the left side of the rotating frame, and the connecting shaft is slidably installed in the limit groove. The freedom of movement of the left end of the rotating frame is limited by the limit groove, and the structure is simple and easy to assemble.

[0011] Preferably, the wire clamp includes a connecting seat and a fixing cover, the connecting seat is mounted on the rotating frame, and a plurality of corresponding semicircular through holes are provided on the connecting seat and the fixing cover, the semicircular through holes are used to clamp the cables for fixing, a buckle is provided at the bottom of the fixing cover, and a buckle hole cooperating with the buckle is provided on the connecting seat.

[0012] Preferably, the inner wall of the semicircular through hole is provided with a rubber anti-skid layer to prevent the cable from sliding relative to the semicircular through hole.

[0013] Preferably, both front and rear ends of the connection seat are hinged to the rotating frame, and a torsion spring is provided at the hinge to make the top open end of the semicircular through hole on the connection seat face upward in the initial state.

[0014] Preferably, the material of the drag chain housing is plastic, and the material of the limit clamp is metal, so as to reduce the production material cost.

[0015] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0016] When the drag chain section is bent, the rotating frame rotates clockwise, so that the wire clamp rotates clockwise relative to the right drag chain section, and the clamped part of the cable moves upward, so that the cable section between the two wire clamps does not contact the drag chain section. Therefore, in the bending section, the cable does not contact the inner wall of the drag chain section, avoiding relative friction between the cable and the drag chain section, increasing the service life of the cable, and is therefore suitable for situations where the mobile end of the equipment frequently reciprocates. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a cross-sectional view of the bending section of the present invention.

[0019] Figure 3 It is a cross-sectional view of two adjacent drag chain segments in the present invention.

[0020] Figure 4 It is a cross-sectional view of the drag chain section of the present invention.

[0021] Figure 5 It is an exploded structural diagram of the tow chain link and the limit clamp in the present invention.

[0022] Reference numerals:

[0023] 1. Cable; 2. Drag chain housing; 21. Drag chain section; 211. Slide groove; 212. Limiting groove; 22. Cover plate; 221. Limiting strip; 3. Limiting clamp; 31. Rotating frame; 311. Rotating shaft; 312. Connecting shaft; 32. Wire clamp; 321. Connecting seat; 322. Fixed cover; 323. Torsion spring. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0025] like Figure 1 and Figure 2 As shown, a mining cable includes a cable 1, a drag chain housing 2 and a plurality of limit clamps 3. The plurality of limit clamps 3 are installed in the drag chain housing 2 at equal intervals. The drag chain housing 2 is made of plastic, and the limit clamps 3 are made of metal. The limit clamps 3 fix a part of the cable 1, thereby reducing the friction between the cable 1 and the drag chain housing 2.

[0026] like Figure 1-Figure 5 As shown, the drag chain housing 2 includes a plurality of drag chain sections 21 hinged in sequence, the limiting clip 3 is installed in the drag chain section 21 every several drag chain sections 21 (shown as every other drag chain section 21), the top of the drag chain section 21 is open, a cover plate 22 is clamped at the opening, a limiting groove 212 is provided in the horizontal direction at the bottom of the drag chain section 21, the front side, the rear side and the right side of the limiting groove 212 are open, and a vertical The slide groove 211 has an opening at the top, and a limiting strip 221 adapted to the slide groove 211 is provided on the bottom surface of the cover plate 22, and a clamping block is provided on one side of the limiting strip 221. A clamping slot adapted to the clamping block is provided in the slide groove 211. When the cover plate 22 is buckled on the drag chain link 21, the clamping block enters the clamping slot, thereby fixing the cover plate 22 on the drag chain link 21, and a square limiting hole is formed between the limiting strip 221 and the bottom end of the slide groove 211.

[0027] like Figure 2 and Figure 5 As shown, the limiting clamp 3 includes a rotating frame 31 and a wire clamp 32 whose right end is hinged to the bottom of the drag chain section 21. The right end of the rotating frame 31 is provided with a rotating shaft 311 adapted to the slide groove 211. The movement of the rotating shaft 311 is limited by the slide groove 211, so that the left end of the rotating frame 31 is tilted upward when the drag chain section 21 is bent. After the cover plate 22 is fixed on the drag chain section 21, the rotating shaft 311 is located in the limiting hole, so that the right end of the rotating frame 31 is rotatably connected to the drag chain section 21. The left side of the rotating frame 31 is fixedly connected with a connecting shaft 312, and the connecting shaft 312 is slidably installed in the limiting groove 212. The wire clamp 32 is installed in the middle of the rotating frame 31 to fix the cable 1;

[0028] The right end of the drag chain housing 2 is connected to the fixed end of the device, and the left end is connected to the mobile end of the device. When the drag chain section 21 is located at the lower layer, the cable 1 between the two wire clamps 32 contacts the inner bottom of the drag chain section 21, thereby preventing the cable 1 from being subjected to excessive force at the clamping portion of the wire clamp 32. When the drag chain section 21 is bent, the rotating frame 31 rotates clockwise, thereby lifting the cable 1 to a certain height at the bend, so that the cable 1 is located in the middle of the drag chain section 21, thereby preventing the cable 1 from contacting the drag chain housing 2 at the bend. When the drag chain section 21 is folded to the upper layer, the wire clamp 32 lifts the cable 1 so that the cable 1 is suspended in the air, thereby preventing the cable 1 from contacting the drag chain section 21 (such as Figure 2 as shown).

[0029] The wire clamp 32 includes a connecting seat 321 and a fixing cover 322, and a plurality of corresponding semicircular through holes are provided on the connecting seat 321 and the fixing cover 322, and the semicircular through holes are used to clamp the cable 1 for fixing, and the inner wall of the semicircular through hole is provided with a rubber anti-slip layer, and the bottom of the fixing cover 322 is provided with a buckle, and the connecting seat 321 is provided with a clamping hole that cooperates with the buckle, and the front and rear ends of the connecting seat 321 are hinged to the rotating frame 31, and a torsion spring 323 is provided at the hinge, which is used to make the top open end of the semicircular through hole on the connecting seat 321 face upward in the initial state, so as to facilitate the alignment of the cable 1 during assembly.

[0030] Assembly process: first, hinge all the drag chain links 21 together in sequence, then align the rotating shaft 311 at the right end of the rotating frame 31 with the slide slot 211 and slide downward, and at the same time, the connecting shaft 312 on the left side of the rotating frame 31 enters the limiting slot 212, and then inserts the cable 1. After inserting the cable 1, align the cable 1 with the semicircular through hole on the connecting seat 321, and then buckle the fixing cover 322 to fix the cable 1, and finally buckle the upper cover plate 22, and the rotating shaft 311 enters the limiting hole at the bottom end of the slide slot 211, thereby completing the assembly.

[0031] Working principle: When the drag chain section 21 is bent, the rotating frame 31 rotates clockwise, so that the wire clamp 32 rotates clockwise relative to the right drag chain section 21. Since the movement path of the wire clamp 32 is an arc, it can avoid pulling the cable 1 and reduce the tension on the cable 1 caused by the movement of the clamping part. At the same time, this part of the cable 1 moves upward without contacting the drag chain section 21. Therefore, in the bending section, the cable 1 does not contact the inner wall of the drag chain section 21, avoiding relative friction between the cable 1 and the drag chain section 21, thereby increasing the service life of the cable. Therefore, it can be suitable for situations where the mobile end of the equipment frequently moves back and forth.

[0032] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A mining cable, comprising a cable and a drag chain housing, characterized in that: It also includes a plurality of limit clamps, the drag chain shell includes a plurality of drag chain sections hinged in sequence, the limit clamps are installed in the drag chain sections at equal intervals, the limit clamp includes a rotating frame with a right end hinged at the bottom of the drag chain section, the left side of the rotating frame is slidably and rotatably connected to the bottom of the adjacent drag chain section, a wire clamp for fixing the cable is installed in the middle of the rotating frame, the right end of the drag chain shell is connected to the fixed end of the device, and the left end is connected to the movable end of the device, when the drag chain section is bent, the rotating frame is rotated clockwise, so that the cable is lifted at the bend and does not contact the drag chain shell, The top of the tow chain section is open, and a cover plate is clamped at the opening; a vertical slide groove is provided on the front and rear inner side walls of the tow chain section, and the top of the slide groove is open; a rotating shaft adapted to the slide groove is provided at the right end of the rotating frame; a limiting strip adapted to the slide groove is provided on the bottom surface of the cover plate; when the cover plate is buckled on the tow chain section, the limiting strip limits the rotating shaft at the bottom end of the slide groove; a limiting groove along the horizontal direction is provided at the bottom of the tow chain section, and the front, rear and right sides of the limiting groove are open; a connecting shaft is fixedly connected to the left side of the rotating frame, and the connecting shaft is slidably installed in the limiting groove.

2. The mining cable according to claim 1, characterized in that: The wire clamp includes a connecting seat and a fixing cover, the connecting seat is installed on the rotating frame, and a plurality of corresponding semicircular through holes are provided on the connecting seat and the fixing cover, and the semicircular through holes are used to clamp the cables for fixing. A buckle is provided at the bottom of the fixing cover, and a clamping hole matching the buckle is provided on the connecting seat.

3. The mining cable according to claim 2, characterized in that: The inner wall of the semicircular through hole is provided with a rubber anti-slip layer.

4. The mining cable according to claim 2, characterized in that: The front and rear ends of the connection seat are both hinged to the rotating frame, and a torsion spring is arranged at the hinge to make the top opening end of the semicircular through hole on the connection seat face upward in the initial state.

5. The mining cable according to claim 1, characterized in that: The material of the drag chain housing is plastic, and the material of the limit clamp is metal.

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