Hydraulic tensioning automatic deviation rectifying device

Abstract

The utility model discloses a hydraulic tensioning automatic deviation rectifying device which comprises a lower machine shell, closed boxes are arranged on the two outer sides of the lower machine shell, guide rails are fixedly connected to the opposite inner sides of the closed boxes, and a bearing seat capable of moving up and down is arranged between the guide rails. Sliding plates are arranged on the two inner sides of the lower machine shell, a rotating shaft is horizontally arranged in the lower machine shell, the two ends of the rotating shaft penetrate through the sliding plates to be fixed to bearing seats, a hydraulic oil cylinder is vertically arranged on the top of the closed box, and the telescopic shaft end of the hydraulic oil cylinder extends into the closed box to be connected with the bearing seats; and deviation switches are symmetrically arranged on the two inner sides of the lower machine shell, and the hydraulic oil cylinders and the deviation switches are connected with the control cabinet. According to the device, remote deviation adjustment is achieved through hydraulic tensioning, the device can make contact with a roller of a deviation switch on the inner side when deviation occurs, the deviation switch feeds back a signal to a control cabinet, and the control cabinet controls the hydraulic oil cylinder on the corresponding side to act so that the hydraulic oil cylinder can move downwards to increase the tension of a roller on the side.

Description

Technical Field

[0001] The utility model relates to the technical field of hoists, in particular to a hydraulic tensioning automatic deviation correcting device. Background Art

[0002] Belt bucket elevator is a belt-driven bucket elevator. Because it uses the belt as a traction component, its transmission stability is not available in other forms of bucket elevators. There is no impact caused by the traction component, so the noise is very small. The efficiency is much higher than that of the traditional chain bucket elevator, so it is also called a high-efficiency bucket elevator.

[0003] However, the belt deviation of the belt hoist is a common phenomenon during operation. Once the belt deviates from the lower part of the ordinary screw tensioner, workers must immediately go to the site to adjust the screw to correct the deviation. The installation of the hoist is arranged according to the on-site conditions of the workshop. If the reserved space is relatively small, manual operation is difficult. Therefore, a fully automatic hydraulic tensioner is developed to achieve remote adjustment of deviation, so as to reduce the economic costs caused by manual labor and downtime caused by deviation and scratched belts. Utility Model Content

[0004] The utility model provides a hydraulic automatic deviation correction tensioning mechanism, which can detect whether the conveyor belt is deviating and to which side it is deviating, and send corresponding signals to the hydraulic cylinder on the corresponding side through the control cabinet, so that the cylinder can move downward to increase the tension of the roller on one side.

[0005] The utility model is achieved in this way:

[0006] A hydraulic tensioning automatic deviation correction device comprises a lower casing, wherein closed boxes are provided on both outer sides of the lower casing, guide rails are fixedly connected to the opposite inner sides of the closed box, and bearing seats that can move up and down are provided between the guide rails; slide plates that can move up and down are provided on both inner sides of the lower casing, a rotating shaft is horizontally provided inside the lower casing, a tail roller is fixedly connected to the rotating shaft, a conveyor belt is wound around the tail roller, both ends of the rotating shaft pass through the slide plates and are fixed on the bearing seats, a hydraulic cylinder is vertically provided on the top of the closed box, and the telescopic shaft end of the hydraulic cylinder extends into the closed box and is connected to the bearing seat; deviation switches are symmetrically provided on both inner sides of the lower casing, the deviation switches are horizontally provided above the rotating shaft and arranged vertically relative to the rotating shaft, and the hydraulic cylinder and the deviation switch are both connected to the control cabinet.

[0007] Preferably, the bearing seat includes a transparent cover, a bearing, a bearing seat body and an end cover, the transparent cover is sleeved on the inner side of the end of the rotating shaft, the bearing is sleeved on the end of the rotating shaft, a shaft end retaining ring is provided on the outside of the bearing, the bearing seat body is sleeved on the outside of the bearing, the upper part of the bearing seat body is connected to the telescopic shaft end of the hydraulic cylinder, the end cover is arranged on the outside of the bearing seat body, and bolts are respectively inserted into the bearing seat body from the end cover and the transparent cover to achieve fixation.

[0008] Preferably, sealing rings are provided between the contact surfaces of the bearing and the transparent cover and the end cover, a skeleton oil seal structure is provided at the junction of the outer side of the transparent cover and the rotating shaft, and a receiving area for filling butter is formed between the end cover and the bearing.

[0009] Preferably, a sealing structure is provided at the connection between the skateboard and the rotating shaft, and the sealing structure includes a sealing sleeve and a sealing bearing. The sealing sleeve is sleeved on the rotating shaft, and the sealing bearing is arranged on the outside of the sealing sleeve and is passed through and fixed on the skateboard. The sealing sleeve and the sealing bearing are fixed by a nut.

[0010] Preferably, two limit bars are arranged side by side on both inner sides of the lower housing, and the slide plate is arranged between the two limit bars.

[0011] Preferably, the tail drum is fixed on the rotating shaft by an expansion sleeve, and a rubber coating layer is provided on the outer side of the tail drum, and the thickness of the rubber coating layer gradually decreases from the middle to both sides.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the device is designed according to the characteristics of the belt elevator, and realizes remote adjustment of deviation through fully automatic hydraulic tensioning. When the conveyor belt deviates, it will contact the roller of the inner deviation switch, and the deviation switch will feedback the signal to the control cabinet, and the control cabinet will control the hydraulic cylinder on the corresponding side to move it downward to increase the tension of the roller on that side. Since the device can be interlocked with the PLC control, it can be unmanned, and the automatic tensioning of the belt conveyor can be fully realized. Remote control and automatic adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 yes Figure 1 Enlarged view of part A in the middle.

[0015] Figure 3 yes Figure 1 Left view of .

[0016] In the figure: 1. lower casing; 2. closing box; 3. guide rail; 4. bearing seat; 5. slide plate; 6. rotating shaft; 7. tail roller; 8. conveyor belt; 9. hydraulic cylinder; 10. deviation switch; 11. hydraulic oil station; 12. sealing ring; 13. skeleton oil seal structure; 14. accommodating area; 15. sealing sleeve; 16. sealing bearing; 17. limit strip; 18. expansion sleeve; 19. rubber coating; 41. transparent cover; 42. bearing; 43. bearing seat body; 44. end cover; 45. shaft end retaining ring. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0018] See also Figure 1-3 The utility model of hydraulic tensioning automatic deviation correction device is a hydraulic tensioning device installed at the tail of the belt hoist. The device has good dynamic performance, high reliability, compact structure, small installation space and simple operation. It is an ideal equipment for belt hoists.

[0019] Specifically, it includes a lower casing 1, and a closed box 2 is provided on both outer sides of the lower casing 1, and guide rails 3 are fixedly connected to the relative inner sides of the closed box 2, and a bearing seat 4 that can move up and down is provided between the guide rails 3; slide plates 5 that can move up and down are provided on both inner sides of the lower casing 1, and a rotating shaft 6 is horizontally provided inside the lower casing 1, and a tail roller 7 is fixedly connected to the rotating shaft 6, and a conveyor belt 8 is wound around the tail roller 7, and both ends of the rotating shaft 6 pass through the slide plates 5 and are fixed on the bearing seat 4, a hydraulic cylinder 9 is vertically provided on the top of the closed box 2, and a hydraulic oil station 11 connected to the hydraulic cylinder 9 is provided on the outer side of the lower casing 1, and the telescopic shaft end of the hydraulic cylinder 9 extends into the closed box and is connected to the bearing seat 4; deviation switches 10 are symmetrically provided on both inner sides of the lower casing 1, and the deviation switch 10 is horizontally provided above the rotating shaft 6 and arranged vertically relative to the rotating shaft 6, and the hydraulic cylinder 9 and the deviation switch 10 are both connected to the control cabinet. Among them, the control cabinet is equipped with relevant programs, which control the hydraulic cylinder to realize automatic tensioning of the conveyor belt by receiving signals from the deviation switch. Furthermore, this device can be interlocked with PLC control to fully realize remote control and automatic adjustment of the automatic tensioning of the belt conveyor.

[0020] The deviation correction method is: the conveyor belt deviates in the direction of the side with the smaller tension of the tail roller. When the conveyor belt deviates to the A side, the roller on the A side needs to move downward to increase the tension on the A side and return the conveyor belt to the center of the roller. The specific deviation correction process is: the deviation switch is arranged on both sides of the conveyor belt. When the conveyor belt deviates, the edge of the conveyor belt will drive the roller of the deviation switch to rotate and squeeze the roller to tilt it. If the roller tilts greater than the set action angle, a set of switch signals will be immediately sent out and transmitted to the control cabinet. The control cabinet sends a signal to the hydraulic cylinder on the corresponding side to make it move, and then control the bearing seat on that side to move downward to increase the tension of the roller on that side. After the conveyor belt is adjusted, the roller of the deviation switch will automatically reset.

[0021] The deviation switch is a prior art product. When installed, it is located about 1 meter above the center of the tail roller. The distance between the roller and the conveyor belt can be adjusted by 20-70MM, so as not to rub against the roller. When deviation occurs, the belt deviates to the outside to the roller, and the roller drives the adjustment rod to activate the deviation switch and send a signal.

[0022] In this embodiment, the bearing seat 4 includes a transparent cover 41, a bearing 42, a bearing seat body 43 and an end cover 44. The transparent cover 41 is sleeved on the inner side of the end of the rotating shaft 6, the bearing 43 is sleeved on the end of the rotating shaft 6, the outer side of the bearing 42 is provided with a shaft end retaining ring 45, the bearing seat body 43 is sleeved on the outer side of the bearing 43, the upper part of the bearing seat body 43 is connected to the telescopic shaft end of the hydraulic cylinder 8, the end cover 44 is arranged on the outer side of the bearing seat body 43, and the bolts are respectively inserted into the bearing seat body from the end cover and the transparent cover to achieve fixation. The above-mentioned bearing seat can effectively prevent dust and ensure that dust cannot enter the bearing seat, thereby improving the service life of the bearing seat.

[0023] Furthermore, a sealing ring 12 is provided between the contact surfaces of the bearing 42, the transparent cover 41 and the end cover 44, a skeleton oil seal structure 13 is provided at the junction of the outer side of the transparent cover 41 and the rotating shaft 6, and a receiving area 14 for filling butter is formed between the end cover 44 and the bearing 42. Through the design of the sealing ring, the friction between the bearing and the bearing seat body can be effectively reduced when the rotating shaft vibrates, and through the skeleton oil seal structure and the filling of butter in the receiving area, the sealing of the bearing seat is further guaranteed, and the lubrication effect is also played, reducing the friction of the rotating shaft on the transparent cover and the bearing.

[0024] In order to ensure the sealing between the rotating shaft and the slide plate, a sealing structure is provided at the connection between the slide plate 5 and the rotating shaft 6. The sealing structure includes a sealing sleeve 15 and a sealing bearing 16. The sealing sleeve 15 is sleeved on the rotating shaft 6. The sealing bearing 16 is arranged on the outside of the sealing sleeve 15, and is penetrated and fixed on the slide plate 5. The sealing sleeve 15 and the sealing bearing 16 are fixed by nuts. In addition, a first oil seal structure is provided on the inner circumference of the sealing bearing close to the rotating shaft. The first oil seal structure abuts against one end of the sealing sleeve located in the sealing bearing. The first oil seal structure abuts against both the outer surface of the rotating shaft and the inner surface of the sealing bearing. The first oil seal structure mainly plays a lubricating role to reduce the wear between the sealing sleeve and the rotating shaft and the sealing bearing.

[0025] The slide plate is arranged on the inner side of the lower shell body, two limit bars 17 are arranged side by side on both inner sides of the lower shell body 1 , and the slide plate 5 is arranged between the two limit bars 17 .

[0026] Furthermore, the tail drum 7 is fixed on the rotating shaft 6 through an expansion sleeve 18, and a rubber coating layer 19 is provided on the outer side of the tail drum 7, and the thickness of the rubber coating layer 19 gradually decreases from the middle to both sides.

[0027] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A hydraulic tensioning automatic deviation correction device, comprising a lower casing, both outer sides of the lower casing are provided with closed boxes, the opposite inner sides of the closed boxes are fixedly connected with guide rails, and a bearing seat that can move up and down is provided between the guide rails; both inner sides of the lower casing are provided with slide plates that can move up and down, a rotating shaft is horizontally provided inside the lower casing, a tail drum is fixedly connected to the rotating shaft, a conveyor belt is wound around the tail drum, and both ends of the rotating shaft pass through the slide plates and are fixed on the bearing seats, characterized in that: A hydraulic cylinder is vertically arranged on the top of the closed box, and the telescopic shaft end of the hydraulic cylinder extends into the closed box and is connected to the bearing seat; deviation switches are symmetrically arranged on both inner sides of the lower casing, and the deviation switches are horizontally arranged above the rotating shaft and vertically arranged relative to the rotating shaft. The hydraulic cylinder and the deviation switch are both connected to the control cabinet.

2. The hydraulic tensioning automatic deviation-correcting device according to claim 1 is characterized in that: The bearing seat includes a transparent cover, a bearing, a bearing seat body and an end cover. The transparent cover is sleeved on the inner side of the end of the rotating shaft, the bearing is sleeved on the end of the rotating shaft, a shaft end retaining ring is arranged on the outer side of the bearing, the bearing seat body is sleeved on the outer side of the bearing, the upper part of the bearing seat body is connected to the telescopic shaft end of the hydraulic cylinder, the end cover is arranged on the outer side of the bearing seat body, and bolts are respectively inserted into the bearing seat body from the end cover and the transparent cover to achieve fixation.

3. The hydraulic tensioning automatic deviation-correcting device according to claim 2 is characterized in that: Sealing rings are arranged between the contact surfaces of the bearing, the transparent cover and the end cover. A skeleton oil seal structure is arranged at the junction of the outer side of the transparent cover and the rotating shaft. A accommodating area for filling butter is formed between the end cover and the bearing.

4. The hydraulic tensioning automatic deviation-correcting device according to claim 1 is characterized in that: A sealing structure is provided at the connection between the slide plate and the rotating shaft, and the sealing structure includes a sealing sleeve and a sealing bearing. The sealing sleeve is sleeved on the rotating shaft, and the sealing bearing is arranged on the outside of the sealing sleeve and is passed through and fixed on the slide plate. The sealing sleeve and the sealing bearing are fixed by a nut.

5. The hydraulic tensioning automatic deviation-correcting device according to claim 1 is characterized in that: Two limiting strips are arranged in parallel on both inner sides of the lower housing, and the slide plate is arranged between the two limiting strips.

6. The hydraulic tensioning automatic deviation-correcting device according to claim 1 is characterized in that: The tail drum is fixed on the rotating shaft through an expansion sleeve, and a rubber coating layer is arranged on the outer side of the tail drum, and the thickness of the rubber coating layer gradually decreases from the middle to both sides.

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