Hydraulic tensioning device

Abstract

The utility model provides a hydraulic tensioning device, which aims to realize long-term stable operation, has the characteristics of low noise, low energy consumption, easiness in operation and maintenance and the like, and can automatically adjust the tensioning force to ensure the stability of a belt conveyor. The device comprises an oil cylinder support, an oil cylinder, a pulley seat, a movable pulley, a fixed seat, a fixed pulley, a bend wheel support, a bend wheel, a steel wire rope, a self-control hydraulic tensioning pump station and an electric control system. Compared with a traditional device, energy consumption is reduced through an efficient hydraulic system, the structural design is simplified, the operation and maintenance difficulty is reduced, and the operation efficiency and reliability of the belt conveyor are improved through automatic tensioning force adjustment.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of industrial automation equipment, in particular to a hydraulic tensioning device. BACKGROUND

[0002] With the rapid development of industrial automation and intelligence, higher requirements are put forward for the precise control and operation convenience of mechanical equipment. As a key component in industrial production, the performance of the hydraulic tensioning device directly affects the stability and production efficiency of the mechanical equipment. Therefore, it has important practical significance to develop a new type of hydraulic tensioning device to solve the problems existing in the traditional method. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a hydraulic tensioning device, which can meet the requirements of long-term continuous operation, has the characteristics of low noise, low energy consumption, easy operation and maintenance, and can automatically adjust the tensioning force under various working conditions to ensure the stable operation of the belt conveyor. The application provides the following technical scheme: a hydraulic tensioning device, comprising:

[0004] A cylinder support;

[0005] A cylinder fixed to the cylinder support, a pulley seat provided on the cylinder piston rod, the pulley seat extending and retracting with the cylinder piston rod, a movable pulley installed on the pulley seat, and a fixed shaft provided at the top end of the pulley seat;

[0006] A fixed seat provided on the extension line of the cylinder piston rod operation;

[0007] A fixed pulley provided on the fixed seat, the fixed pulley being axially parallel to the movable pulley;

[0008] A deflection wheel support provided beside the fixed seat;

[0009] A deflection wheel provided on the deflection wheel support, the deflection wheel being axially perpendicular to the fixed pulley, and the plane on which the deflection wheel is located being tangent to the movable pulley;

[0010] A steel wire rope, one end of which is fixed to the fixed shaft, passes through the fixed pulley, the movable pulley and is connected to the subsequent equipment through the deflection wheel;

[0011] A self-control hydraulic tensioning pump station responsible for driving and adjusting the cylinder;

[0012] An electric control system responsible for the electrical control of the entire hydraulic tensioning device, capable of realizing PLC program control and manual control, as well as system interlocking and program control.

[0013] Preferably, the highest point of the fixed pulley is lower than the highest point of the movable pulley.

[0014] Preferably, the highest point of the fixed pulley is lower than the highest point of the movable pulley.

[0015] Preferably, the steel wire rope forms three segments on the same vertical plane after being redirected by the fixed pulley and the movable pulley.

[0016] Preferably, the pulley seat is U-shaped, with the bottom end connected to the piston rod of the oil cylinder, and the shaft center of the movable pulley connected to the two side walls of the pulley seat.

[0017] Preferably, the steel wire rope adopts a multi-strand steel core structure to improve tensile strength and wear resistance.

[0018] Preferably, the electric control system includes an emergency stop button to quickly cut off power in an emergency.

[0019] Compared with the prior art, the beneficial effects of the present application are:

[0020] In the long-term continuous operation process, the traditional tensioning device has low efficiency and high energy consumption, increasing the operating cost of enterprises. The present application reduces energy loss by using an efficient hydraulic system, greatly reduces energy consumption, and brings obvious economic benefits to enterprises. The structural design of the device is simple and clear, and the layout of each component is reasonable, making the operation and maintenance work more convenient and fast, greatly reducing the operation difficulty and maintenance cost, and improving the production efficiency. In addition, the most prominent technical advantage of the present application is that it can automatically adjust the tensioning force to ensure the stable operation of the belt conveyor. Under various working conditions, through the precise control of the self-control hydraulic tensioning pump station and the electric control system, the tensioning force can be monitored and adjusted in real time, effectively avoiding the problems of belt deviation and slipping caused by tensioning force fluctuation, greatly improving the operation efficiency and reliability of the belt conveyor. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 A structural schematic diagram of a hydraulic tensioning device according to an embodiment of the present application;

[0022] Fig. 2 A partial structural plan view of a hydraulic tensioning device according to an embodiment of the present application;

[0023] Fig. 3 A partial structural perspective view of a hydraulic tensioning device according to an embodiment of the present application;

[0024] In the figure: 1, oil cylinder support; 2, oil cylinder; 3, pulley seat; 4, movable pulley; 5, fixed shaft; 6, fixed seat; 7, fixed pulley; 8, deflector wheel support; 9, deflector wheel; 10, steel wire rope; 11, self-control hydraulic tensioning pump station; 12, electric control system; DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0026] It should be noted that in the description of the present application, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0027] In addition, it should be understood that in order to facilitate description, the sizes of the various components shown in the drawings are not drawn in accordance with the actual proportional relationship, for example: the thickness or width of certain layers can be exaggerated relative to other layers.

[0028] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined or described in one drawing, it will not need to be further specifically discussed and described in the description of subsequent drawings.

[0029] In order to solve the technical problems in the background art, as shown in the Figs. 1-3 The present application provides a technical solution: a hydraulic tensioning device, characterized by:

[0030] The oil cylinder support 1 is the foundation of the oil cylinder 2, which needs to be fixed on solid ground or support to ensure its stability and load capacity. The oil cylinder 2 is fixed on the oil cylinder support 1 by high-strength bolts or welding to ensure that the oil cylinder 2 does not displace during operation. The pulley seat 3 is installed on the piston rod of the oil cylinder 2, and the pulley seat 3 is fixed with the piston rod to realize synchronous extension and contraction. The movable pulley 4 is installed on the pulley seat 3, and the top end of the pulley seat 3 is provided with a fixed shaft 5 for fixing one end of the steel wire rope 10. The fixed seat 6 is installed on the extension line of the piston rod of the oil cylinder 2 for supporting the fixed pulley 7. The fixed pulley 7 is installed on the fixed seat 6 and is axially parallel to the movable pulley 4 to ensure smooth transition of the steel wire rope 10 between the two pulleys. The deflection pulley support 8 is installed beside the fixed seat 6 for supporting the deflection pulley 9. The deflection pulley 9 is installed on the deflection pulley support 8 and is axially perpendicular to the fixed pulley 7, and the plane where the deflection pulley 9 is located is tangent to the movable pulley 4 to realize effective deflection of the steel wire rope 10. One end of the steel wire rope 10 is fixed on the fixed shaft 5, then passes through the fixed pulley 7, the movable pulley 4 in turn, and finally passes through the deflection pulley 9 to connect to the subsequent equipment such as a conveyor. The automatic hydraulic tensioning pump station 11 is responsible for providing and adjusting the pressure oil required by the oil cylinder 2 to realize accurate control of the oil cylinder 2. The automatic hydraulic tensioning pump station 11 should be equipped with a pressure sensor and a control system to monitor and adjust the pressure in the oil cylinder 2 to ensure the stability of the tensioning force. The electric control system 12 is responsible for the electrical control of the entire hydraulic tensioning device, including starting, stopping, PLC program control and manual control, as well as system interlocking and program control. The electric control system 12 should include an operation panel for displaying device status and receiving operation instructions, as well as an emergency stop button to ensure that power can be quickly cut off in an emergency.

[0031] Further, the deflection pulley 9 rim center line is on the same horizontal plane as the highest point of the movable pulley 4 rim, ensuring smoother transition of the steel wire rope 10 from the movable pulley 4 to the deflection pulley 9, reducing the bending stress of the steel wire rope 10, thereby prolonging the service life of the steel wire rope 10. By keeping the highest point of the deflection pulley 9 and the movable pulley 4 rim on the same horizontal plane, excessive bending or twisting of the steel wire rope 10 during deflection can be avoided, reducing local stress concentration and reducing the risk of steel wire rope 10 breakage. Optimized steel wire rope 10 path helps to more evenly transmit tensioning force, ensuring more stable tension of the conveyor belt.

[0032] It should be noted that the highest point of the fixed pulley 7 is lower than the highest point of the movable pulley 4, reducing the degree of bending of the steel wire rope 10 in the transition from the movable pulley 4 to the fixed pulley 7, thereby reducing wear and fatigue of the steel wire rope 10. The lower position of the fixed pulley 7 helps to more directly transmit the tensioning force, reducing the loss of force caused by bending of the steel wire rope 10. By keeping the fixed pulley 7 at a lower position, the risk of the steel wire rope 10 jumping from the fixed pulley 7 can be reduced, improving the stability of the system.

[0033] It is worth noting that after the wire rope 10 is redirected by the fixed pulley 7 and the movable pulley 4, it forms three segments in the same vertical plane at the redirection pulley 9. The distribution of the three segments of the wire rope 10 in the same vertical plane helps to distribute the tension more evenly, reducing local stress concentration. The linear arrangement of the wire rope 10 in the vertical plane can reduce wear and damage caused by improper angles, prolonging the service life of the wire rope 10. The linear arrangement of the wire rope 10 helps to reduce the instability caused by the deflection or twisting of the wire rope 10, improving the stability of the entire system. The arrangement of the wire rope 10 in the same vertical plane makes it easier to install and maintain, as the tension and wear of the wire rope 10 can be visually inspected.

[0034] It should be noted that the bottom end of the U-shaped pulley seat 3 is connected to the piston rod of the oil cylinder 2. This can be achieved by welding, bolting or other appropriate fixing methods. The axis of the movable pulley 4 is connected to the two side walls of the U-shaped pulley seat 3. This is usually achieved through bearings or bushings, ensuring that the movable pulley 4 can rotate freely and be accurately centered. The U-shaped pulley seat 3 provides a stable support structure that can effectively withstand the forces generated by the movable pulley 4 during operation. The design of the U-shaped pulley seat 3 makes the entire device more compact, saving space, while facilitating integration onto the piston rod of the oil cylinder 2. The U-shaped structure can reduce the vibration of the movable pulley 4 during operation, improving the stability and life of the system. The design of the U-shaped pulley seat 3 makes it easier to install and maintain the movable pulley 4, as it can be operated directly from the two side walls.

[0035] It should be noted that the multi-strand steel core structure of the wire rope 10 has higher tensile strength than the single-strand structure, and can withstand greater tension, suitable for high-load working environments. When the surface of the multi-strand structure wire rope 10 is worn, the internal steel core can provide additional protection, extending the service life of the wire rope 10. When the multi-strand steel core structure of the wire rope 10 is impacted or stretched excessively, the internal multi-strand structure can disperse stress, reducing the risk of breakage.

[0036] It is worth noting that the electric control system 12 is equipped with an emergency stop button, which allows operators to quickly cut off power and stop the device in the event of potential danger or emergency, thereby responding quickly to emergencies. By immediately stopping the operation of the device, the occurrence of accidents can be prevented or the severity of the accident can be reduced, protecting the safety of operators and equipment.

[0037] Although embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A hydraulic tensioning device, characterized in that The hydraulic tensioning device comprises: a cylinder support (1); a cylinder (2) fixed on the cylinder support (1), a pulley seat (3) arranged on the piston rod of the cylinder (2), a movable pulley (4) installed on the pulley seat (3), a fixed shaft (5) arranged at the top end of the pulley seat (3); a fixed seat (6) arranged on the extension line of the piston rod of the cylinder (2); a fixed pulley (7) arranged on the fixed seat (6) and axially parallel to the movable pulley (4); a deflection wheel support (8) arranged beside the fixed seat (6); a deflection wheel (9) arranged on the deflection wheel support (8) and axially perpendicular to the fixed pulley (7), and the plane where the deflection wheel (9) is arranged is tangent to the movable pulley (4); a steel wire rope (10) with one end fixed on the fixed shaft (5), passing through the fixed pulley (7) and the movable pulley (4) and then connected to the subsequent equipment through the deflection wheel (9); a self-control hydraulic tensioning pump station (11) responsible for driving and adjusting the cylinder (2); an electric control system (12) responsible for the electrical control of the entire hydraulic tensioning device, capable of realizing PLC program control and manual control, as well as system interlocking and program control.

2. The hydraulic tensioning device of claim 1, wherein The center line of the rim of the deflection wheel (9) is on the same horizontal plane as the highest point of the rim of the movable pulley (4).

3. The hydraulic tensioning device of claim 2, wherein, The highest point of the fixed pulley (7) is lower than the highest point of the movable pulley (4).

4. The hydraulic tensioning device of claim 1, wherein After being redirected through the fixed pulley (7) and the movable pulley (4), the steel wire rope (10) forms three segments on the same vertical plane at the deflection wheel (9).

5. The hydraulic tensioning device of claim 1, wherein, The pulley seat (3) is U-shaped, with the bottom end connected to the piston rod of the cylinder (2), and the axis of the movable pulley (4) connected to the two side walls of the pulley seat (3).

6. The hydraulic tensioning device of claim 1, wherein, The steel wire rope (10) adopts a multi-strand steel core structure to improve the tensile strength and wear resistance.

7. The hydraulic tensioning device of claim 1, wherein, The electric control system (12) includes an emergency stop button to quickly cut off the power supply in emergency situations.

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