CN218057013U

CN218057013U - Pneumatic tensioning device for lower part of elevator

Info

Publication number: CN218057013U
Application number: CN202220824040.8U
Authority: CN
Inventors: 薛腾超; 申卫东; 张瑞亭; 苗震
Original assignee: Hebi General Machinery & Electric Co ltd
Current assignee: Hebi General Machinery & Electric Co ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-12-16
Anticipated expiration: 2032-04-11

Abstract

The utility model discloses a pneumatic tensioning device at the lower part of a hoisting machine, which comprises a casing, wherein a rotating shaft is horizontally arranged in the casing, and a driven wheel is fixedly connected at the outer side of the middle part of the rotating shaft; the equal fixedly connected with cylinder fixing base in both sides of casing, the up end of cylinder fixing base passes through bolt fixedly connected with double-acting cylinder, the flexible end of cylinder is connected with the slide connecting seat, the equal fixedly connected with guide rail in both sides of casing, the inboard of guide rail is provided with the slide, through block mode sliding connection between slide and the guide rail, the side at the slide is fixed to the slide connecting seat, the lower part side fixedly connected with backup pad of slide, the upper end of backup pad are provided with the support bearing frame, the pivot both ends are passed the slide and are fixed on the support bearing frame. Through mutually supporting between cylinder, the slide connecting seat that sets up, backup pad and the slide to can adjust the position of countershaft, in addition, still arrange the gas circuit system of adjusting cylinder pressure on the cylinder, the thrust of adjustment cylinder that can be more accurate avoids thrust to make the belt fracture excessively.

Description

Pneumatic tensioning device for lower part of elevator

Technical Field

The utility model relates to a lifting machine technical field specifically is a pneumatic straining device of lifting machine lower part.

Background

The bucket elevator is a continuous conveying machine for vertically lifting materials by utilizing a series of hoppers which are uniformly and fixedly connected to an endless traction member, and the bucket elevator is used for vertically or nearly vertically conveying bulk materials upwards by utilizing a series of hoppers which are fixedly connected to a traction chain or an adhesive tape.

However, when the existing elevator is used, an operator needs to tension the belt through the tensioning device, and the situation that the belt is broken can be caused due to the fact that the tension force cannot be accurately controlled in the operation process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic straining device of lifting machine lower part aims at improving current lifting machine when using, at the tensile dynamics of the unable accurate control of in-process of operation to lead to the problem that the cracked condition takes place to appear in the belt.

The utility model discloses a realize like this: a pneumatic tensioning device at the lower part of a hoister comprises a shell, wherein a rotating shaft is horizontally arranged in the shell, and a driven wheel is fixedly connected to the outer side of the middle part of the rotating shaft; the utility model discloses a quick-witted casing, including casing, cylinder fixing base, bolt fixedly connected with double-acting cylinder, slide connecting seat, slide, support bearing seat, pivot, support bearing seat, the equal fixedly connected with cylinder fixing base in both sides of casing, the up end of cylinder fixing base passes through bolt fixedly connected with double-acting cylinder, double-acting cylinder's flexible end is connected with the slide connecting seat, the equal fixedly connected with guide rail in both sides of casing, the inboard of guide rail is provided with the slide, through block mode sliding connection between slide and the guide rail, the side at the slide is fixed to the slide connecting seat, the lower part side fixedly connected with backup pad of slide, the upper end of backup pad is provided with the support bearing seat, the pivot both ends are passed the slide and are fixed on the support bearing seat.

Further, be provided with the gas circuit system that is used for adjusting cylinder pressure on double-acting cylinder, the gas circuit system includes relief pressure valve, two five-way solenoid valve, choke valve, the manometer that are linked together with the air supply, the gas circuit links to each other with the cylinder through relief pressure valve, two five-way solenoid valve in proper order, has just arranged choke valve and manometer in proper order respectively between the gas circuit of two gas outlets of two five-way solenoid valve and the positive reverse air inlet of cylinder.

Preferably, a sealing bearing structure is arranged at the joint of the outer side of the sliding plate and the rotating shaft, the sealing bearing structure comprises a sealing shaft sleeve and a sealing bearing, the sealing shaft sleeve is sleeved on the rotating shaft, the sealing bearing penetrates through the sliding plate and is located on the outer side of the sealing shaft sleeve, and the sealing shaft sleeve and the sealing bearing are fixed on the sliding plate through nuts.

Furthermore, a reinforcing rod is arranged inside the driven wheel, the reinforcing rod is fixedly connected with the driven wheel, and the reinforcing rod is arranged inside the driven wheel so as to improve the connection strength between the driven wheel and the rotating shaft.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the characteristics of reasonable structure and convenient use, and can adjust the position of the rotating shaft through the mutual matching of the arranged air cylinder, the sliding plate connecting seat, the supporting plate and the sliding plate; in addition, still arrange the gas circuit system of adjustment cylinder pressure on the cylinder, the thrust of adjustment cylinder that can be more accurate avoids the too big belt fracture that makes of thrust.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a right side view of fig. 1.

Fig. 3 is a schematic structural diagram of the air path system.

In the figure: 1. a housing; 11. a cylinder fixing seat; 111. a first reinforcing plate; 12. a guide rail; 2. a double-acting cylinder; 3. a slide plate connecting seat; 31. a second reinforcing plate; 4. a support plate; 41. a bearing seat; 5. a rotating shaft; 51. a driven wheel; 511. a reinforcing bar; 6. a slide plate; 7. a pressure gauge; (ii) a 8. Sealing the shaft sleeve; 9. and sealing the bearing.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1-3, a pneumatic tensioning device for the lower part of a hoist comprises a housing 1, a rotating shaft 5 horizontally arranged in the housing, and a driven wheel 51 fixedly connected to the outer side of the middle part of the rotating shaft 5; the equal fixedly connected with cylinder fixing base 11 in both sides of casing 1, the up end of cylinder fixing base 11 passes through bolt fixedly connected with two effect cylinder 2, two effect cylinder 2's flexible end is connected with slide connecting seat 3, the equal fixedly connected with guide rail 12 in both sides of casing 1, the inboard of guide rail 12 is provided with slide 6, through block mode sliding connection between slide 6 and the guide rail 12, slide connecting seat 3 is fixed in the side of slide 6, the lower part side fixedly connected with backup pad 4 of slide 6, the upper end of backup pad 4 is provided with back bearing frame 41, the slide is fixed on back bearing frame 41 at the pivot 51 both ends.

Further, an air path system for adjusting the pressure of the air cylinder is arranged on the double-acting air cylinder and comprises a pressure reducing valve, a two-position five-way electromagnetic valve, a throttle valve and a pressure gauge, wherein the pressure reducing valve, the two-position five-way electromagnetic valve, the throttle valve and the pressure gauge are communicated with an air source, the air path is connected with the air cylinder through the pressure reducing valve and the two-position five-way electromagnetic valve in sequence, and the throttle valve and the pressure gauge 7 are arranged between two air outlets of the two-position five-way electromagnetic valve and an air path of a forward air inlet and a reverse air inlet of the air cylinder respectively and sequentially. The relief pressure valve is the relief pressure valve that has the manometer, conveniently looks over the pressure value of gas circuit. The throttle valve adopts manual throttle valve, adjusts the pressure that gets into the cylinder through the throttle valve to effective control cylinder's thrust or pulling force. The pressure gauge is used for checking the pressure value of gas entering the cylinder.

In the gas circuit system, a pressure reducing valve reduces the pressure of the gas to a certain required outlet pressure, and the outlet pressure is automatically kept stable and then output; two positions of the two-position five-way electromagnetic valve are controllable (on and off), the five-way electromagnetic valve is provided with five channels for ventilation, and 1 air inlet (connected with an air inlet source), 1 positive-action air outlet and 1 reverse-action air outlet (respectively provided for a positive-reverse-action air source of the cylinder), 1 positive-action air outlet and 1 reverse-action air outlet are arranged, so that the stretching out or retracting in of the telescopic end of the cylinder is realized. The two-position five-way electromagnetic valve is matched with the double-acting air cylinder for use, belongs to the known technology in the industry, and is not described in detail. According to the technology, a throttle valve and a pressure gauge are respectively arranged on a gas path behind a positive action gas outlet and a reverse action gas outlet of a two-position five-way electromagnetic valve, the pressure gauge is positioned behind the throttle valve, and then the gas path is communicated to positive and reverse action gas inlets of a cylinder. The throttle valve is used for adjusting the pressure of the gas entering the cylinder, and the pressure gauge is used for displaying the pressure of the gas entering the cylinder in real time. And (3) knowing that the pushing force or the pulling force of the cylinder = the bottom area of the inner diameter of the cylinder multiplied by the system pressure, the pushing force or the pulling force of the cylinder can be effectively controlled by adjusting the system pressure. Can carry out experimental setting before dispatching from the factory, confirm under certain pressure range, adjust the limit from the driving wheel to record this pressure range, during field debugging, open the solenoid valve after, come the gas flow who gets into the cylinder to control through the governing valve, adjust in setting for the pressure range, can look over pressure value in real time, avoid the pressure value to exceed the setting for the range.

In order to ensure the sealing performance between the rotating shaft and the sliding plate, a sealing bearing structure is arranged at the joint of the outer side of the sliding plate 6 and the rotating shaft, the sealing bearing structure comprises a sealing shaft sleeve 8 and a sealing bearing 9, the sealing shaft sleeve 8 is sleeved on the rotating shaft, the sealing bearing 9 is arranged on the sliding plate in a penetrating mode and is located on the outer side of the sealing shaft sleeve, and the sealing shaft sleeve and the sealing bearing are fixed on the sliding plate through nuts.

It is preferable that reinforcing rod 511 is provided inside driven wheel 51, and reinforcing rod 511 is fixedly connected to driven wheel 51, and reinforcing rod 511 is provided inside driven wheel 51 in order to improve the connection strength between driven wheel 51 and rotary shaft 5.

In addition, the second reinforcing plate 31 is symmetrically arranged on the lower end surface of the slide plate connecting seat 3, and the second reinforcing plate 31 is fixedly connected with the slide plate connecting seat 3, so that the connection strength between the slide plate connecting seat 3 and the slide plate 6 is improved. The upper end face of the cylinder fixing seat 11 is symmetrically provided with a first reinforcing plate 111, the first reinforcing plate 111 is fixedly connected with the cylinder fixing seat 11, and the connection strength between the cylinder fixing seat 11 and the machine shell 1 is improved through the arrangement.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pneumatic tensioning device at the lower part of a hoister comprises a shell, wherein a rotating shaft is horizontally arranged in the shell, and a driven wheel is fixedly connected to the outer side of the middle part of the rotating shaft; the method is characterized in that: the equal fixedly connected with cylinder fixing base in both sides of casing, the up end of cylinder fixing base passes through bolt fixedly connected with double-acting cylinder, double-acting cylinder's flexible end is connected with the slide connecting seat, the equal fixedly connected with guide rail in both sides of casing, the inboard of guide rail is provided with the slide, through block mode sliding connection between slide and the guide rail, the side at the slide is fixed to the slide connecting seat, the lower part side fixedly connected with backup pad of slide, the upper end of backup pad is provided with the support bearing frame, the pivot both ends are passed the slide setting on the support bearing frame.

2. The pneumatic tensioning device at the lower part of the elevator as claimed in claim 1, wherein a gas path system for adjusting the pressure of the cylinder is arranged on the double-acting cylinder, the gas path system comprises a pressure reducing valve, a two-position five-way solenoid valve, a throttle valve and a pressure gauge which are communicated with a gas source, the gas path is connected with the cylinder through the pressure reducing valve and the two-position five-way solenoid valve in sequence, and the throttle valve and the pressure gauge are respectively and sequentially arranged between two gas outlets of the two-position five-way solenoid valve and a gas path of a forward and reverse gas inlet of the cylinder.

3. The pneumatic tensioning device for the lower part of the elevator as claimed in claim 1, wherein a sealing bearing structure is disposed at the connection between the outer side of the sliding plate and the rotating shaft, the sealing bearing structure includes a sealing shaft sleeve and a sealing bearing, the sealing shaft sleeve is sleeved on the rotating shaft, the sealing bearing is arranged on the sliding plate in a penetrating manner and is located at the outer side of the sealing shaft sleeve, and the sealing shaft sleeve and the sealing bearing are fixed on the sliding plate through nuts.

4. The pneumatic lower tension device of the elevator as recited in claim 1, wherein the driven wheel is provided with a reinforcing rod inside, and the reinforcing rod and the driven wheel are fixedly connected.