Cable conveying device with slippage protection

Abstract

The utility model provides a cable conveying device with slippage protection, and aims to effectively avoid the problem of idle friction caused by cable conveying stagnation so as to protect a cable. The device comprises two groups of conveying belts which are oppositely arranged, a bracket frame for supporting and mounting the conveying belts, a mounting cover, a driving motor, an adjusting screw rod and a buffer system. A fixed power roller and an adjustable driven roller are installed on the installation cover, and the distance between the fixed power roller and the adjustable driven roller is adjusted through an adjusting screw rod so as to control the tensioning degree of the conveying belt. The driving motor drives the fixed power roller through the speed reducer to drive the conveying belt to operate, and cable conveying is achieved. The section design of the conveying belt is thick outside and narrow inside, so that the clamping surface with the cable is increased, and the friction force is homogenized. And when the cable stops, the conveying belt and the fixed power roller slip, so that the damage to the surface of the cable is avoided. According to the scheme, the safety and stability of cable conveying are improved, the service life of the cable is prolonged, and the cable conveying device meets the conveying requirements of cables of various specifications and materials.

Description

Technical Field

[0001] This utility model belongs to the technical field of cable laying conveying equipment, specifically a cable conveying device with slip protection. Background Technology

[0002] Cable conveying devices are key equipment in the cable laying process, effectively improving laying efficiency, reducing labor intensity, and ensuring the quality and safety of cable laying. They typically use a motor-driven transmission mechanism to rotate a conveyor belt or rollers, thereby transporting the cable. Multiple conveyors are usually used in combination to form a continuous conveying system.

[0003] Existing cable conveyors have several shortcomings, such as poor cable protection. During cable laying, if a sudden malfunction occurs, such as the cable getting stuck in a duct or other complex factors causing unexpected stagnation, the cable conveyor may fail to stop immediately and continue operating. In this situation, strong relative motion occurs between the running conveyor and the stationary cable, inevitably applying continuous friction to the cable surface. The cable's surface protective structure is designed to resist various physical damages and chemical corrosion; however, under this abnormal friction, its protective capability is significantly reduced. As friction continues, the cable's surface insulation material gradually wears down, turning a smooth surface into a rough one. This not only threatens the cable's insulation performance, making it more prone to leakage during normal operation, but also negatively impacts the cable's overall mechanical strength, making it more susceptible to damage from external forces during subsequent use, thus greatly reducing the cable's expected service life.

[0004] More seriously, if this friction is not corrected in time, as the friction intensifies, it will eventually exceed the limits of the cable's surface protection and internal structure, directly damaging the cable's internal core wires. As a crucial component for power transmission, damage to the cable's internal core wires will trigger a series of electrical faults such as short circuits and open circuits, potentially leading to serious safety accidents like fires and electric shocks, causing incalculable losses and harm to personnel and surrounding equipment.

[0005] During cable laying, when the cable is subjected to sudden tension or stress changes, the conveyor usually lacks an effective buffer device to reduce the impact on the cable. This can easily cause the cable to be damaged due to uneven stress during the transport process, such as the cable sheath being torn or the internal structure being deformed. Summary of the Invention

[0006] To address the shortcomings and defects of the existing technology, the inventor has improved the design and provided a cable conveying device with friction buffering function. This device effectively avoids the problem of the conveyor belt spinning and rubbing against the cable due to cable conveying stagnation, thus protecting the cable. Specifically, this invention is implemented as follows:

[0007] A cable conveying device with slippage protection includes two sets of conveyor belts arranged opposite each other, and a support frame for supporting and mounting the conveyor belts, characterized in that it further includes:

[0008] The mounting cover is symmetrically mounted on the support frame, with a fixed driving roller and an adjustable passive roller mounted at each end. The adjustable passive roller can adjust the distance between itself and the fixed driving roller along the conveying direction. A conveyor belt is fitted between the adjustable passive roller and the fixed driving roller. A drive motor is mounted below the mounting cover, and its conveying end is connected to the shaft end of the fixed driving roller through a reducer, enabling the fixed driving roller to rotate. An adjusting screw has one threaded end mounted on the mounting cover near the adjustable passive roller, and the other end is fixedly connected to the extension end of the adjustable passive roller. The distance between the adjustable passive roller and the fixed driving roller can be adjusted by adjusting the thread of the adjusting screw, making the tension friction between the conveyor belt and the adjustable passive roller and the fixed driving roller adjustable.

[0009] Furthermore, the support frame includes two horizontal bars and two pairs of vertical bars at both ends, with guide rollers installed between the vertical bars; several sets of mounting holes at different heights are provided between the vertical bars, and the guide rollers can be installed between any set of mounting holes.

[0010] Furthermore, it also includes side plates, the bottom of which are mounted on the bracket frame by several pins. The upper part of the side plates is connected to two horizontally arranged auxiliary rods. The bottom of both mounting covers are fitted onto the auxiliary rods to ensure the stability of the mounting covers, but the ends of the auxiliary rods are not fixedly connected to the side plates.

[0011] Furthermore, a spring rod is installed between the two side plates, with a first spring and a second spring threaded through the spring rod. A limit block is installed between the first spring and the second spring, and the limit block is placed in a slot at the bottom of the mounting cover. The limit block can provide clamping force and support buffer between the mounting covers.

[0012] Furthermore, the inner surface of the mounting cover is an open surface, and its upper and lower surfaces are provided with a waist-shaped groove and a threaded adjustment seat near the edge end of the adjustable passive roller. The extended ends of both ends of the adjustable passive roller protrude from the waist-shaped groove. The adjustment screw passes through the extended end and the other end passes through the threaded adjustment seat. The roller spacing can be changed by adjusting the screw to the same degree through the upper and lower sets of knobs.

[0013] Furthermore, the two sets of mounting covers and conveyor belts are installed in opposite directions.

[0014] Furthermore, the cross-section of the conveyor belt is thicker on the outside and narrower on the inside.

[0015] Furthermore, the adjusting screw is adjusted such that the tension friction between the adjustable passive roller and the fixed power roller relative to the conveyor belt is just enough to drive the cable conveyor.

[0016] The working principle of this invention is as follows: The drive motor serves as the power source, and its output power is transmitted to the fixed drive roller through a reducer. The reducer reduces the rotational speed and increases the torque, enabling the fixed drive roller to drive the conveyor belt at a suitable speed and with sufficient force. When the fixed drive roller rotates, the friction between it and the conveyor belt causes the conveyor belt to circulate along the path formed by the fixed drive roller and the adjustable driven roller, thus providing the power basis for cable transport. The conveyor belt has a cross-section that is thicker on the outside and narrower on the inside. This special shape helps to increase the clamping surface for the cable during use and even out the friction between it and the cable. When the conveyor belt rotates, it contacts the cable placed on it and generates friction, pushing the cable to move along the conveying direction, thus realizing the cable transport process. One end of the adjusting screw is mounted on the mounting cover, and the other end is fixedly connected to the extension end of the adjustable driven roller. By rotating the knob on the adjusting screw, the adjusting screw will drive the adjustable driven roller to move along the conveying direction due to the action of the thread, thereby changing the distance between the adjustable driven roller and the fixed drive roller. This adjustment of the distance can adjust the tension of the conveyor belt. When adjusted to the appropriate position, the tension friction between the adjustable passive roller and the fixed powered roller relative to the conveyor belt is just enough to drive the cable transport. This ensures sufficient driving force is transmitted to the cable for transport, while also ensuring that the friction between the cable and the conveyor belt is greater than the friction between the conveyor belt and the roller. This allows the conveyor belt and cable to remain relatively stationary when the cable encounters unexpected stagnation, while the conveyor belt and the fixed powered roller slip, thus protecting the cable surface from damage caused by frictional forces. A spring rod installed between the two side plates, along with the first spring, second spring, and limiting block fitted onto it, constitutes a buffer system. The limiting block is placed in a slot at the bottom of the mounting cover. When the cable or mounting cover is subjected to external impact (such as a sudden cable jam or other abnormal reaction forces), the impact force is transmitted to the limiting block, which compresses the spring. The first and second springs absorb and buffer part of the impact force through their elastic deformation, thereby reducing damage to the mounting cover and the entire device, protecting critical components of the equipment, and also providing some protection for the cable, preventing damage from excessive instantaneous impact.

[0017] The beneficial technical effects of this utility model are as follows:

[0018] (1) Achieve cable protection: By precisely adjusting the distance between the adjustable passive roller and the fixed power roller by adjusting the screw, the friction between the conveyor belt and the cable is just right, which not only ensures normal conveying, but also allows the conveyor belt to slip on the fixed power roller when the cable stops unexpectedly, avoiding friction damage to the cable surface caused by the continued operation of the conveyor, effectively protecting the cable surface protection, ensuring that the insulation performance of the cable is not affected, and extending the service life of the cable.

[0019] (2) It has clamping and buffering functions. The buffer system, consisting of a spring rod, a first spring, a second spring and a limiting block, can provide clamping force during the conveying process to ensure the efficiency of the conveying. When the cable or device is subjected to external impact force, it can effectively absorb and buffer part of the impact force, reduce damage such as instantaneous pulling or squeezing of the cable, and further improve the safety and stability of the cable during the conveying process.

[0020] (3) Stable and reliable conveying performance: The drive motor drives the fixed power roller via a reducer, and the friction between the fixed power roller and the conveyor belt drives the conveyor belt to rotate, providing stable power for cable conveying. Furthermore, the special outer-thick, inner-narrow shape of the conveyor belt increases the clamping surface with the cable, making the friction more uniform and ensuring a smooth and stable cable conveying process, reducing the likelihood of jamming or slippage. The adjusting screw can easily adjust the distance between the adjustable passive roller and the fixed power roller, thereby flexibly controlling the tension of the conveyor belt to adapt to the conveying needs of cables of different specifications and materials, ensuring the device's compatibility with various cables and its conveying efficiency. Attached Figure Description

[0021] Figure 1 A three-dimensional structural diagram of a cable conveying device with slip protection;

[0022] Figure 2 A side view of the structure of a cable conveying device with slip protection;

[0023] Figure 3 This is a front view of the structure of a cable conveying device with slip protection;

[0024] Figure 4 A top view of the structure of a cable conveying device with slip protection;

[0025] Figure 5 This is a schematic diagram of the installation structure of the conveyor belt;

[0026] Figure 6 An exploded view of the structure of a cable conveying device with slip protection;

[0027] Figure 7This is a three-dimensional bottom view of a cable conveying device with slip protection.

[0028] Figure 8 This is a schematic diagram showing the fixed drive roller slipping relative to the conveyor belt.

[0029] in:

[0030] 1—Conveyor belt, 2—Support frame, 20—Horizontal bar, 21—Vertical bar, 22—Guide roller, 23—Mounting hole, 24—Side plate, 25—Pin;

[0031] 3—Mounting cover; 31—Fixed power roller; 32—Adjustable passive roller; 33—Drive motor; 34—Reducer;

[0032] 41—Adjusting screw, 42—Extension end, 43—Auxiliary connecting rod, 44—Elastic rod, 45—First spring, 46—Second spring, 47—Limiting block, 48—Slot, 49—Oval groove, 50—Threaded adjusting seat. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0034] Example 1: How to use a cable conveying device with slippage protection:

[0035] Assemble the two horizontal bars 20 and four vertical bars 21 into a support frame 2. Ensure the guide roller 22 mounting holes 23 between the vertical bars 21 are correctly positioned, and select appropriate mounting hole 23 positions to install the guide rollers 22 at both ends as needed. Mount the bottom of the side plate 24 onto the support frame 2 using pins 25, and connect the upper part of the side plate 24 to the transversely arranged auxiliary connecting rod 43. Fit the bottom of the two mounting covers 3 onto the auxiliary connecting rod 43 to ensure the stability of the mounting covers 3. Then install the fixed power roller 31 and the adjustable passive roller 32 at both ends of the mounting cover 3. Install the drive motor 33 below the mounting cover 3 and connect it to the shaft end of the fixed power roller 31 via a reducer 34. Ensure the drive motor 33 and reducer 34 are securely installed and reliably connected. Fit the two sets of conveyor belts 1 onto the fixed power roller 31 and the adjustable passive roller 32 respectively. Ensure the cross-sectional shape of the conveyor belts 1 is thicker on the outside and narrower on the inside to effectively clamp the cable. Mount one end of the adjusting screw 41 onto the mounting cover 3 near the adjustable driven roller 32, and fix the other end to the extension end 42 of the adjustable driven roller 32. Ensure that the adjusting screw 41 can be smoothly adjusted in terms of spacing. Adjust the spacing between the adjustable driven roller 32 and the fixed driven roller 31 by rotating the knob on the adjusting screw 41. The goal is to ensure that the tension friction of the conveyor belt 1 is just enough to drive the cable conveyor, while ensuring that the friction between the cable and the conveyor belt 1 is greater than the friction between the conveyor belt 1 and the roller. Ensure that the tension of the conveyor belt 1 is moderate, neither too loose nor too tight. Confirm that the positions of the first spring 45, the second spring 46, and the limiting block 47 are correct to ensure effective cushioning in the event of an impact.

[0036] The power of the drive motor 33 is transmitted to the fixed drive roller 31 through the reducer 34. The function of the reducer 34 is to reduce the speed and increase the torque, so that the fixed drive roller 31 can drive the conveyor belt 1 at a suitable speed and with sufficient force. The fixed drive roller 31 starts to rotate, and due to the friction between it and the conveyor belt 1, it drives the conveyor belt 1 to rotate cyclically along the path formed by the fixed drive roller 31 and the adjustable passive roller 32. The cross-section of the conveyor belt 1 is thicker on the outside and narrower on the inside. This shape helps to increase the clamping area of ​​the cable and even out the friction between it and the cable. If the cable encounters an unexpected stop, the conveyor belt 1 and the cable remain relatively stationary, while the conveyor belt 1 and the fixed drive roller 31 form a slippage state, thereby protecting the cable surface from damage by friction. The first spring 45 and the second spring 46 absorb and buffer part of the impact force through their own elastic deformation, reducing damage to the mounting cover 3 and the entire device, protecting the key components of the equipment, and also providing a certain degree of protection for the cable, preventing cable damage caused by excessive instantaneous impact force. When the cable or mounting cover 3 is subjected to external impact, such as a sudden cable jam or other abnormal situation causing a reaction force, the impact force will be transmitted to the limiting block 47, which will compress the spring. This achieves the protective effect.

[0037] It is important to note that during the installation of the adjusting screw 41, continuous adjustments are necessary to coordinate with the conveyor belt 1 and the cable conveying process. The goal is to ensure that the frictional force F1 between the conveyor belt 1 and the cable during conveying is less than the frictional force F between the conveyor belt 1 and the drive roller. At this point, the conveyor belt 1 can transport the cable forward. When the cable encounters external resistance, it remains stationary, and the frictional force between the conveyor belt 1 and the stationary cable changes from dynamic friction F1 to static friction F2, where F2 > F > F1. This means F2 is exactly greater than the frictional force F between the conveyor belt 1 and the drive roller, causing slippage between the conveyor belt 1 and the drive roller when the cable stops. Adjusting the adjusting screw 41 changes the tension of the conveyor belt 1, thus adjusting the frictional force F until it falls between F1 and F2. This completes the installation.

[0038] Meanwhile, the structural design of components such as mounting cover 3 and bracket frame 2, as well as the existence of the buffer system, can reduce the damage to the cable and equipment caused by equipment vibration and impact due to cable stagnation to a certain extent, thus realizing the cable slippage protection function.

[0039] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A cable conveying device with slip protection, comprising two sets of conveyor belts (1) arranged opposite to each other, and a support frame (2) for supporting and mounting the conveyor belts (1), characterized in that... Also includes: Mounting cover (3) is symmetrically mounted on bracket frame (2). Fixed power roller (31) and adjustable passive roller (32) are mounted at both ends respectively. The adjustable passive roller (32) can adjust the distance between the fixed power roller (31) and the adjustable passive roller (32) along the conveying direction. Conveyor belt (1) is fitted between the adjustable passive roller (32) and the fixed power roller (31). The drive motor (33) is installed below the mounting cover (3), and its conveying end is connected to the shaft end of the fixed power roller (31) through the reducer (34), which can drive the fixed power roller (31) to rotate. The adjusting screw (41) has one threaded end mounted on the mounting cover (3) near the adjustable passive roller (32), and the other end fixedly connected to the extension end (42) of the adjustable passive roller (32). The distance between the adjustable passive roller (32) and the fixed power roller (31) can be adjusted by adjusting the thread of the adjusting screw (41), so that the tension friction between the conveyor belt (1) and the adjustable passive roller (32) and the fixed power roller (31) is adjustable.

2. The cable conveying device according to claim 1, characterized in that, The support frame (2) includes two horizontal bars (20) and two pairs of vertical bars (21) placed at both ends. Guide rollers (22) are installed between the vertical bars (21). Several sets of mounting holes (23) with different heights are provided between the vertical bars (21). The guide rollers (22) can be installed between any set of mounting holes (23).

3. The cable conveying device according to claim 1, characterized in that, It also includes a side plate (24), the bottom of which is mounted on the bracket frame (2) by several pins (25). The upper part of the side plate (24) is connected to two horizontally arranged auxiliary rods (43). The bottom of the two mounting covers (3) are both fitted onto the auxiliary rods (43) to ensure the stability of the mounting covers (3). However, the ends of the auxiliary rods (43) are not fixedly connected to the side plate (24).

4. The cable conveying device according to claim 3, characterized in that, A spring rod (44) is installed between the two side plates (24). A first spring (45) and a second spring (46) are fitted onto the spring rod (44). A limit block (47) is installed between the first spring (45) and the second spring (46). The limit block (47) is placed in the slot (48) at the bottom of the mounting cover (3). The limit block (47) can provide clamping force and top support buffer between the mounting covers (3).

5. The cable conveying device according to claim 1, characterized in that, The inner side of the mounting cover (3) is an open surface. The upper and lower ends of the cover are provided with a waist-shaped groove (49) and a threaded adjustment seat (50) near the edge. The extension ends (42) of the two ends of the adjustable passive roller (32) protrude from the waist-shaped groove (49). The adjustment screw (41) is inserted from the extension end (42) and the other end is inserted from the threaded adjustment seat (50). The roller spacing can be changed by adjusting the screw (41) to the same degree through the upper and lower sets of knobs.

6. The cable conveying device according to claim 1, characterized in that, The two sets of mounting covers (3) and conveyor belts (1) are installed in opposite directions.

7. The cable conveying device according to claim 1, characterized in that, The cross-section of the conveyor belt (1) is thick on the outside and narrow on the inside.

8. The cable conveying device according to claim 1, characterized in that, The adjusting screw (41) is adjusted so that the tension friction between the adjustable passive roller (32) and the fixed power roller (31) relative to the conveyor belt (1) is just enough to drive the cable conveyor.

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