Drag chain with protection mechanism for lifting system

Abstract

The utility model discloses a drag chain with a protection mechanism for a lifting system, which belongs to the technical field of mechanical drag chains and comprises a joint block, a plurality of groups of inserting blocks and clamping blocks are fixedly connected to two sides of the joint block respectively, the inserting blocks in the upper group are connected with the clamping blocks in the lower group in an inserting manner, one side of the joint block is connected with a keel in a clamping manner, and the other side of the joint block is connected with a protection mechanism. The keels are provided with an upper plate and a lower plate as a group, a plurality of groups of keels are arranged, a fixing structure used for fixing and limiting a cable is fixedly mounted in a gap between the keels of the upper plate and the lower plate, and an auxiliary structure used for reducing the gap between the keels is fixedly connected to the adjacent sides of every two groups of keels; the pressing plate and the clamping plate are arranged to extrude, fix and limit the cable, the cable is prevented from moving or falling off at will, it is ensured that the cable is not excessively twisted, abraded or damaged, the service life of the cable is prolonged, the spring has certain buffering and damping functions, and the influence caused by external impact or vibration on the cable is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical drag chains, in particular to a drag chain for a lifting system with a protective mechanism. Background Art

[0002] A drag chain is a device that can restrain cables or wires or pneumatic and hydraulic pipes and facilitate their rotation and movement. It plays a role of protection and traction. It is widely used in application scenarios that require frequent movement or bending of cables, such as mechanical equipment, automation equipment, robots, etc.

[0003] A Chinese patent discloses a keel drag chain (publication number CN 214578614 U), which includes at least two sequentially connected joining blocks, characterized in that the joining block includes an inserting portion, a resisting block portion connected to the inserting portion, a socket portion connected to the resisting block portion, and a hinged portion connected to the socket portion; a cavity is arranged in the socket portion, the inserting portions of two adjacent joining blocks are correspondingly inserted in the cavity of the socket portion, and the inserting portion is hinged to the hinged portion; the resisting block portions are relatively arranged on both sides of the inserting portion, and when the inserting portion abuts against one side of the inner wall of the cavity, the resisting block portion on the same side abuts against the outer edge of the socket portion. The above-mentioned keel drag chain, by arranging the abutment parts on both sides of the plug-in part, makes the plug-in part abut against the inner wall of the socket part to provide supporting force while the abutment parts abut against the outer edge of the socket part to provide supporting force synchronously, ensuring that the plug-in part and the abutment parts provide supporting force at the same time, thereby improving the bearing capacity between the connecting blocks and improving the reliability of the keel drag chain. However, the patent does not provide a structure for limited position cables. Cables are often placed inside the drag chain equipment of the traditional lifting system, but multiple groups of cables are frequently moved or bent in the drag chain, and may shake or cross at will, resulting in chaos and disorder, affecting the performance and life of the cables, and causing safety hazards such as electrical failures, short circuits or fires. Utility Model Content

[0004] The utility model aims to provide a tow chain for a lifting system with a protective mechanism to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A drag chain for a lifting system with a protective mechanism, comprising a joint block, plug blocks and clamp blocks are fixedly connected on both sides of the joint block, the plug blocks and clamp blocks are provided in multiple groups, and the plug blocks of the upper group are plugged into the clamp blocks of the lower group, a keel is clamped on one side of the joint block, the keel is provided with an upper and lower plates as a group, and multiple groups are provided, and a fixing structure for fixing a limit cable is fixedly installed in the gap between the upper and lower plate keels, and an auxiliary structure for reducing the gap between the keels of each two groups is fixedly connected on adjacent sides of the keels;

[0007] The fixing structure includes a fixing frame, and two groups of clamps for clamping cables are movably installed inside the fixing frame, a spring 1 for controlling the movement of the clamp is fixedly installed on one side of the clamp, and one side of the spring 1 is fixedly connected to the inner wall of the fixing frame, a pressure plate for preventing the cable from surging and displacing is installed on the upper part of the fixing frame, and a spring 2 for providing downward pressure on the pressure plate is fixedly installed on the top of the pressure plate.

[0008] As a further solution of the utility model, both sides of the splint are fixedly connected with moving rods for ensuring the movement balance of the splint, and one end of the moving rod is slidably connected with a limiting plate for limiting the movable range of the moving rod.

[0009] As a further solution of the utility model, the auxiliary structure includes a shielding plate, and rotating wheels are fixedly installed on both sides of the shielding plate. The rotating wheels are rotatably connected to the inside of the expansion plate, and one side of the expansion plate is fixedly connected to the outer surface of the keel.

[0010] As a further solution of the utility model, thread grooves are provided at the axis of the plug block and the clamping block, and the plug block and the clamping block are threadedly connected by bolts. A fixing cap is installed on one side of the bolt to prevent the bolt from falling, and the fixing cap is clamped with the clamping block.

[0011] As a further solution of the utility model, two groups of engaging blocks for preliminary limiting and fixing are fixedly installed on the outer surface of the plug block, and an engaging groove for engaging the engaging block is provided on one side of the clamping block adjacent to the plug block.

[0012] As a further solution of the utility model, the coupling block is fixedly connected with a plug sleeve for supporting and fixing the keel, the top end of the plug sleeve is rotatably connected with a limit buckle through a bearing, and the limit buckle passes through the keel.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. When the utility model is used, the pressure plate is driven by spring 2 to press the fixed limit cable and prevent the cable from expanding to both sides, so as to keep the cable neat and stable. At the same time, the cable pushes the clamping plate to both sides, squeezing and contracting spring 1. At the same time, spring 1 reacts on the clamping plate to apply pressure inward, so as to fix the limit cable and prevent the cable from moving or falling off at will, ensuring that the cable will not be excessively twisted, worn or damaged, thereby extending the service life of the cable. The spring setting has certain buffering and shock absorbing functions, which effectively reduces the impact of external shock or vibration on the cable.

[0015] 2. When the utility model is used, by setting the shielding plate, when the device is running in the lifting system, the two groups of keels at the bend stretch the shielding plate to both sides, so that the rotating wheel slides inside the expansion plate to reduce the gap between the shielding keels, avoid the cable from extending from the gap, keep the cable neat and safe, and reduce the friction and wear of the cable at the bend. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic diagram of the overall structure of a drag chain for a lifting system with a protective mechanism.

[0017] Figure 2 The figure is a structural diagram of a fixed structure in a drag chain for a lifting system with a protective mechanism.

[0018] Figure 3 This is a detailed view of the fixed structure in a drag chain for a lifting system with a protective mechanism.

[0019] Figure 4 The figure is a structural diagram of an auxiliary structure in a drag chain for a lifting system with a protective mechanism.

[0020] Figure 5 This is a disassembled diagram of a fitting block in a drag chain for a lifting system with a protective mechanism.

[0021] Figure 6 The present invention is a structural diagram of a plug-in sleeve in a drag chain for a lifting system with a protective mechanism.

[0022] In the figure: 1. connecting block; 2. inserting block; 3. clamping block; 4. keel; 5. fixing frame; 501. splint; 502. spring 1; 503. pressure plate; 504. spring 2; 505. moving rod; 506. limiting plate; 6. shielding plate; 601. rotating wheel; 602. expansion plate; 7. bolt; 8. fixing cap; 9. fitting block; 10. fitting groove; 11. plug-in sleeve; 12. limiting buckle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1: Please refer to Figure 1-3A drag chain for a lifting system with a protective mechanism comprises a joint block 1, and plug blocks 2 and clamp blocks 3 are fixedly connected on both sides of the joint block 1, and the number of plug blocks 2 and clamp blocks 3 is provided in multiple groups, and the plug blocks 2 of the upper group are plugged into the clamp blocks 3 of the lower group, and a keel 4 is clamped on one side of the joint block 1, and the keel 4 is provided with an upper and lower plates as a group, and a total of multiple groups are provided, and a fixing structure for fixing a limit cable is fixedly installed in the gap between the upper and lower keels 4, and an auxiliary structure for reducing the gap between the keels 4 is fixedly connected on each adjacent side of two groups of keels 4;

[0025] The fixing structure includes a fixing frame 5, and there are a plurality of fixing frames 5, which are fixedly mounted on the upper surface of the lower plate keel 4. Two groups of clamping plates 501 for clamping cables are movably mounted inside the fixing frame 5, and an arc groove for fitting the cable surface is provided on the opposite side of the clamping plates 501. A spring 502 for controlling the movement of the clamping plates 501 is fixedly mounted on one side of the clamping plates 501, and one side of the spring 502 is fixedly connected to the inner wall of the fixing frame 5. A pressure plate 503 for preventing the cable from surging and displacing is installed on the upper part of the fixing frame 5. A spring 504 for providing downward pressure to the pressure plate 503 is fixedly mounted on the top of the pressure plate 503, and the top of the spring 504 is fixedly connected to the lower surface of the upper plate keel 4.

[0026] Both sides of the clamping plate 501 are fixedly connected with a moving rod 505 for ensuring the moving balance of the clamping plate 501, and one end of the moving rod 505 is slidably connected with a limiting plate 506 for limiting the moving range of the moving rod 505, and the limiting plate 506 is fixedly installed on one side of the fixing frame 5;

[0027] Specifically, each set of limiting plates 506 is provided with a moving groove for providing movement of the moving rod 505, and the moving rod 505 is slidably connected in the moving groove;

[0028] More specifically, an extension plate is fixedly installed on the top of each set of clamping plates 501 to facilitate the entry of cables between the two sets of clamping plates 501, thereby enhancing the convenience of the device. Both sides of the pressure plate 503 are configured as curved plates for enclosing and fixing cables.

[0029] Example 2: Please refer to Figure 4 The auxiliary structure includes a shielding plate 6, which acts on the device to shield the gap between the keels 4 when the device is bent during operation to prevent the cable from accidentally protruding and being compressed and damaged. The shielding plate 6 is fixedly installed with a rotating wheel 601 on both sides. The rotating wheel 601 is rotatably connected to the inside of the expansion plate 602, and one side of the expansion plate 602 is fixedly connected to the outer surface of the keel 4;

[0030] Specifically, a sliding groove for sliding the rotating wheel 601 is provided inside the expansion plate 602. There are two rotating wheels 601 on one side of the shielding plate 6, and there are four groups of expansion plates 602. The two rotating wheels 601 are respectively slidably connected to the two groups of expansion plates 602, and a gap is provided between the two groups of expansion plates 602. When the device is operated and rotated by the lifting system, the two groups of keels 4 stretch the shielding plate 6 to both sides, so that the rotating wheel 601 slides inside the expansion plate 602 to cooperate with the movement of the shielding plate 6, so as to block the gap between the keels 4, avoid the cable from extending from the gap, and ensure the safety of the device.

[0031] See also Figure 5 , the axis of the plug block 2 and the clamp block 3 are both provided with a threaded groove, and the plug block 2 and the clamp block 3 are threadedly connected by a bolt 7, a fixing cap 8 for preventing the bolt 7 from falling is installed on one side of the bolt 7, and the fixing cap 8 is clamped with the clamp block 3, and a clamping groove for clamping the fixing cap 8 is provided on one side of the clamp block 3;

[0032] Two groups of engaging blocks 9 for preliminary limiting and fixing are fixedly installed on the outer surface of the inserting block 2 , and an engaging groove 10 for engaging the engaging blocks 9 is provided on one side of the clamping block 3 adjacent to the inserting block 2 .

[0033] See also Figure 6 The joint block 1 is fixedly connected with a plug sleeve 11 for supporting and fixing the keel 4. The top of the plug sleeve 11 is rotatably connected with a limit buckle 12 through a bearing, and the limit buckle 12 passes through the keel 4;

[0034] Specifically, a slot for inserting the keel 4 is provided inside the plug-in sleeve 11, and limiting grooves for limiting the limiting buckles 12 are provided at both ends of the keel 4. The limiting buckles 12 are rotatably installed in the limiting grooves.

[0035] The working principle of the utility model is:

[0036] First, install each set of plug blocks 2 and card blocks 3, threadedly connect them with bolts 7, and snap into the fixing cap 8, then place the keel 4 on the plug sleeve 11, rotate the limit buckle 12, so that the keel 4 is fixedly connected to the connecting block 1 through the plug sleeve 11, and then pass the cable through the upper and lower keels 4, let the spring 2 504 drive the pressure plate 503 to squeeze the cable downward and prevent the cable from expanding to both sides, so that the cable enters between the two sets of clamping plates 501, pushes the clamping plates 501 to both sides, and then the clamping plates 501 are connected to the moving rod 505 and move along the limiting plate 506 to squeeze the contraction spring 1 502, and at the same time, the spring 1 502 reacts on the clamping plate 501 to apply pressure inward, thereby fixing the limiting cable, when the device is operating in the lifting system, the two sets of keels 4 at the bend stretch the shielding plate 6 to both sides, so that the rotating wheel 601 slides inside the expansion plate 602, to reduce the gap between the shielding keels 4 and prevent the cable from extending out of the gap.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A drag chain for a lifting system with a protective mechanism, comprising a coupling block (1), characterized in that: The two sides of the joint block (1) are respectively fixedly connected with an insert block (2) and a clamping block (3), the number of which is provided in a plurality of groups, and the insert block (2) of the upper group is plugged into the clamping block (3) of the lower group; one side of the joint block (1) is clamped with a keel (4), the keel (4) is provided with an upper and lower plate as a group, and a plurality of groups are provided, and a fixing structure for fixing a limit cable is fixedly installed in the gap between the upper and lower plate keels (4), and an auxiliary structure for reducing the gap between the keels (4) of each two groups is fixedly connected to the adjacent sides of the keels (4); The fixing structure comprises a fixing frame (5), two groups of clamping plates (501) for clamping cables are movably installed inside the fixing frame (5), a spring 1 (502) for controlling the movement of the clamping plate (501) is fixedly installed on one side of the clamping plate (501), and one side of the spring 1 (502) is fixedly connected to the inner wall of the fixing frame (5), a pressure plate (503) for preventing the cable from surging and displacing is installed on the upper part of the fixing frame (5), and a spring 2 (504) for providing downward pressure to the pressure plate (503) is fixedly installed on the top of the pressure plate (503).

2. A drag chain for a lifting system with a protective mechanism according to claim 1, characterized in that: Both sides of the clamping plate (501) are fixedly connected with moving rods (505) for ensuring the moving balance of the clamping plate (501), and one end of the moving rod (505) is slidably connected with a limiting plate (506) for limiting the moving range of the moving rod (505).

3. A drag chain for a lifting system with a protective mechanism according to claim 2, characterized in that: The auxiliary structure comprises a shielding plate (6), and rotating wheels (601) are fixedly installed on both sides of the shielding plate (6), and the rotating wheels (601) are rotatably connected to the inside of the expansion plate (602), and one side of the expansion plate (602) is fixedly connected to the outer surface of the keel (4).

4. A drag chain for a lifting system with a protective mechanism according to claim 3, characterized in that: The insert block (2) and the clamp block (3) are both provided with thread grooves at their axis centers, and the insert block (2) and the clamp block (3) are threadedly connected via a bolt (7); a fixing cap (8) is installed on one side of the bolt (7) to prevent the bolt (7) from falling off, and the fixing cap (8) is clamped with the clamp block (3).

5. A drag chain for a lifting system with a protective mechanism according to claim 4, characterized in that: Two groups of engaging blocks (9) for preliminary limiting and fixing are fixedly mounted on the outer surface of the insert block (2), and an engaging groove (10) for engaging the engaging block (9) is provided on one side of the clamping block (3) adjacent to the insert block (2).

6. A drag chain for a lifting system with a protective mechanism according to claim 5, characterized in that: The joint block (1) is fixedly connected to a plug sleeve (11) for supporting and fixing the keel (4); the top end of the plug sleeve (11) is rotatably connected to a limit buckle (12) via a bearing, and the limit buckle (12) passes through the keel (4).

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