Traction machine with traction force capable of being adjusted automatically

Abstract

The traction machine with the traction force capable of being adjusted automatically comprises a traction machine body, and the traction machine body comprises a traction machine frame, an equipment bin installed on the traction machine frame, hydraulic supporting legs installed at the four ends of the traction machine frame, a traction beam installed at the front end of the traction machine frame and a traction mechanism installed on the front face of the traction machine frame. The traction control system has the functions of automatically detecting the current traction force and automatically adjusting the hydraulic system through the PLC, and waste caused by manual real-time monitoring is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of traction machines, and more specifically, relates to a traction machine with self-adjustable traction force. Background Technology

[0002] A cable pulling machine is a mechanical device specifically designed for pulling and laying cables. It generates a certain traction force to release the cable from the reel and smoothly guide it to the predetermined installation position, ensuring that the cable is not damaged during installation.

[0003] In the construction of high-voltage transmission lines, traction machines are used to pull cables from reels and lay them into overhead lines or underground tunnels; in the construction of communication infrastructure, traction machines are used to lay fiber optic cables and other communication cables; during cable maintenance and replacement, traction machines help to smoothly lay new cables into the path of existing cables.

[0004] Traditional hydraulic traction machines use components such as hydraulic pumps, control valves, and hydraulic cylinders in the hydraulic system to precisely adjust the traction force. Operators can adjust the pressure and flow of hydraulic oil manually or automatically to control the traction force of the traction machine according to actual needs. However, manual control of cable traction in real time is a waste of manpower. Therefore, a traction machine that can automatically detect and adjust the traction force in real time is needed to achieve efficient and precise traction force control. Utility Model Content

[0005] To address the above deficiencies, this utility model provides a traction machine with self-adjustable traction force, including a traction machine body, the traction machine body including a traction machine frame, an equipment compartment installed on the traction machine frame, hydraulic support legs installed at the four ends of the traction machine frame, a traction beam installed at the front end of the traction machine frame, and a traction mechanism installed on the front of the traction machine frame.

[0006] The traction mechanism includes a traction wheel and an adjustment mechanism movably mounted on the side of the traction frame. The traction wheel is driven by a hydraulic system inside the equipment compartment.

[0007] The adjustment mechanism includes a wheel body, a bearing for movable installation on the rotating shaft of the traction frame is installed at the center of the back of the wheel body, an electro-hydraulic rod is installed on the front of the wheel body, and a number of adjustment wheel pieces that are pushed out by the output end of the electro-hydraulic rod are installed inside the wheel body;

[0008] It also includes load sensors for detecting tension and PLC controllers for automatically adjusting the hydraulic system and electro-hydraulic rods.

[0009] Furthermore, the wheel body has an internal cavity, and the internal cavity has several inner cavities. The outer circumference of the wheel body has several through holes that communicate with the inner cavities. Each cavity has an adjusting wheel piece inside, and each adjusting wheel piece has a limiting groove in the middle. The front of the wheel body is limited by several positioning bolts that are inserted into the limiting grooves inside each adjusting wheel piece. Each adjusting wheel piece has a push column fixed at one end near the center of the wheel body, which is pushed by the output end of the electric hydraulic rod.

[0010] Furthermore, both ends of the pusher are curved surfaces.

[0011] Furthermore, the diameter of the output end of the electro-hydraulic rod matches the diameter of the bore in the wheel body, and the length of the output end also matches the depth of the bore.

[0012] Furthermore, the inner cavities are separated by reinforcement components, and the working surfaces of the adjusting wheel and the reinforcement components are respectively provided with cable grooves I and II for the cable to pass through.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. It has the function of automatically detecting the current traction force and automatically adjusting the hydraulic system through the PLC controller, reducing the waste of manual real-time monitoring;

[0015] 2. Furthermore, by changing the diameter of the cable wound around the wheel, the traction force can be controlled in a more diverse and precise manner. Attached Figure Description

[0016] Figure 1 This is a front view of the present invention.

[0017] Figure 2 This is a front view of the initial state of the adjustment mechanism in this utility model.

[0018] Figure 3 This is a front view of the adjustment mechanism in the deployed state of this utility model.

[0019] Figure 4 This is a schematic diagram of the adjustment mechanism in its initial state in this utility model.

[0020] Figure 5 This is a top view of the adjusting mechanism in this utility model.

[0021] Figure 6 This is a right view of the wheel body in this utility model.

[0022] Figure 7 This is a schematic diagram of the hydraulic system in this utility model.

[0023] In the diagram: 1. Traction frame; 2. Equipment compartment; 3. Hydraulic support leg; 4. Moving wheel; 5. Traction beam; 6. Traction wheel; 7. Adjustment mechanism; 701. Wheel body; 702. Electro-hydraulic rod; 703. Adjusting wheel piece; 704. Cable trough I; 705. Reinforcing component; 706. Cable trough II; 707. Limiting groove; 708. Positioning bolt; 709. Central hole; 710. Push column; 8. Linkage component; 9. Cable. Detailed Implementation

[0024] To facilitate understanding of this utility model, the device of this utility model will be described more fully below with reference to the accompanying drawings. Embodiments of the device are shown in the drawings. However, this device can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example

[0027] like Figure 1 As shown, this embodiment provides a traction machine with self-adjustable traction force, including a traction machine body. The traction machine body has the same structure as a traditional traction machine, including a traction machine frame 1, an equipment compartment 2 installed on the traction machine frame 1, hydraulic support legs 3 installed at the four ends of the traction machine frame 1 for lifting, a traction beam 5 installed at the front end of the traction machine frame 1 for connection, and a traction mechanism installed on the front of the traction machine frame 1 for traction of the cable 9. The entire machine moves through the moving wheels 4 at the bottom.

[0028] The traction mechanism includes a traction wheel 6 movably mounted on the side of the traction frame 1 and an adjustment mechanism 7. The two are connected by a linkage 8, which is a traditional gear and chain transmission structure, and will not be described in detail here. The traction wheel 6 is driven by a hydraulic system inside the equipment compartment 2. The hydraulic system is as follows: Figure 7 As shown, the hydraulic system can provide a stable tension output, avoiding the vibration and fluctuation that may occur in the mechanical transmission system, and ensuring that the cable 9 maintains a uniform traction force during the laying process. By adjusting the pressure and flow of the hydraulic oil, the traction force of the cable 9 can be precisely controlled to adapt to the laying requirements of different specifications and types of cables 9. It is a common power equipment in existing traction machines, and will not be described in detail here.

[0029] The adjusting mechanism 7 includes a wheel body 701. A bearing is installed at the center of the back of the wheel body 701 for movably mounting on the rotating shaft of the traction frame 1, enabling the traction wheel 6 to drive the wheel body 701 to rotate via the cable 9. An electro-hydraulic rod 702 is installed on the front of the wheel body 701 (fixed to the telescopic seat of the electro-hydraulic rod 702, with the output end of the electro-hydraulic rod 702 facing the central hole 709 of the wheel body 701). Several adjusting wheel pieces 703 are installed inside the wheel body 701, protruding through the output end of the electro-hydraulic rod 702. That is, when the output end of the electro-hydraulic rod 702 extends into the central hole 709, the output end of the electro-hydraulic rod 702 contacts the push post 710 at the adjusting wheel piece 703, pushing it to move away from the output end of the electro-hydraulic rod 702, achieving synchronous outward extension of each adjusting wheel piece 703, thus changing the diameter of the wheel body 701. Figure 3 As shown;

[0030] It also includes a load sensor for detecting tension and a PLC controller for automatically adjusting the hydraulic system and the electro-hydraulic rod 702. The load sensor transmits the current tension information to the PLC controller. The PLC controller automatically adjusts the hydraulic system based on preset information values ​​(the rotation of the hydraulic traction machine mainly relies on the hydraulic oil generated by the hydraulic pump driven by the electric motor. The rotation of the motor drives the hydraulic pump to work, thereby causing the piston in the hydraulic cylinder to move, and converting the linear motion into the rotational motion of the traction wheel through a connection mechanism). For example, when the current tension is X, the preset hydraulic system pressurizes by a value Y to complete the adjustment of the traction force. When the traction force needs to exceed the adjustment range of the hydraulic system, the PLC controller controls the electro-hydraulic rod 702 to extend, causing each adjusting wheel 703 to extend outward, thereby changing the diameter of the wheel body 701 around which the cable 9 is wound. It can also be connected to control software to achieve more precise calculation functions, which will not be elaborated here. It is sufficient to achieve the function of automatically adjusting the tension.

[0031] Detailed, such as Figure 2-6 As shown, the wheel body 701 has a cavity inside, and the cavity has several inner cavities. The inner cavities are separated by a reinforcement 705. The reinforcement 705 is made of high-quality steel. Its function is to increase the stability of the wheel body 701 and prevent the wheel body 701 from deforming or cracking during the movement of the adjusting wheel 703. The working surfaces of the adjusting wheel 703 and the reinforcement 705 are respectively provided with grooves I704 and II706 for the cable 9 to pass through, ensuring that there is sufficient friction between the cable 9 and grooves I704 and II706, so as not to affect the normal traction operation (i.e., traction force control).

[0032] The outer ring of the wheel body 701 has several through holes that communicate with the inner cavity. Each cavity has an adjusting wheel 703. Each adjusting wheel 703 has a limiting groove 707 in the middle. The front of the wheel body 701 is limited by several positioning bolts 708 that are inserted into the limiting grooves 707 inside each adjusting wheel 703. It should be noted that the limiting grooves 707 and positioning bolts 708 should be prismatic (i.e., not traditional cylindrical) to ensure the angular stability during movement and use.

[0033] Each adjusting wheel 703 has a pusher 710 fixed at one end near the center of the wheel body 701. The pusher 710 is pushed by the output end of the electric hydraulic rod 702. Both ends of the pusher 710 are arc surfaces. At the same time, the diameter of the output end of the electric hydraulic rod 702 matches the diameter of the hole 709 in the wheel body 701, and the length of the output end matches the depth of the hole 709.

[0034] It should be noted that the structure described in this utility model can be implemented in many different forms and is not limited to the embodiments described. Any equivalent transformations made by those skilled in the art based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, such as the loading and unloading of other items, are included within the protection scope of this utility model.

Claims

1. A traction machine with self-adjustable traction force, comprising a traction machine body, characterized in that: The traction machine body comprises a traction frame, a device bin mounted on the traction frame, hydraulic support legs mounted on four ends of the traction frame, a traction beam mounted on the front end of the traction frame, and a traction mechanism mounted on the front of the traction frame; The traction mechanism comprises a traction wheel movably mounted on the side of the traction frame and an adjusting mechanism, and the traction wheel is driven by a hydraulic system inside the device bin; The adjusting mechanism comprises a wheel body, a bearing mounted at the center of the back of the wheel body for movably mounting on the rotating shaft of the traction frame, an electro-hydraulic rod mounted on the front of the wheel body, and a plurality of adjusting wheel pieces inside the wheel body which are pushed out by the output end of the electro-hydraulic rod; It also comprises a load sensor for detecting tension and a PLC controller for automatically adjusting the hydraulic system and the electro-hydraulic rod.

2. A traction machine with self-adjustable traction force according to claim 1, characterized in that: A cavity is formed in the inside of the wheel body, a plurality of inner cavities are formed in the inside of the cavity, a plurality of through holes are formed in the outer ring of the wheel body and communicate with the inner cavities, one adjusting wheel piece is arranged in each cavity, a limiting groove is formed in the middle of each adjusting wheel piece, a plurality of positioning pins are mounted on the front of the wheel body and are inserted into the limiting grooves in the inside of each adjusting wheel piece to limit it, and a push column pushed by the output end of the electro-hydraulic rod is fixed on one end of each adjusting wheel piece close to the center of the wheel body.

3. A traction machine with self-adjusting traction force as claimed in claim 2, characterized in that: The two ends of the push column are arc surfaces.

4. A self-adjusting drawbar as claimed in claim 2 wherein: The diameter value of the output end of the electro-hydraulic rod matches the hole diameter value of the middle hole of the wheel body, and the length value of the output end also matches the depth value of the middle hole.

5. A self-adjusting traction machine according to claim 2, wherein: The inner cavities are separated by reinforcing members, and the working surfaces of the adjusting wheel pieces and the reinforcing members are respectively provided with cable grooves I and II for cables.

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