CN110822277A

CN110822277A - Protective device for double-cone dryer

Info

Publication number: CN110822277A
Application number: CN201911262880.9A
Authority: CN
Inventors: 张拥军; 陈永健; 朱文浩
Original assignee: Taicang Zhengxin Drying Equipment Technology Co Ltd
Current assignee: Taicang Zhengxin Drying Equipment Technology Co Ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-02-21
Also published as: WO2021114598A1

Abstract

The invention discloses a protection device for a double-cone dryer, which comprises two fence mechanisms and a locking mechanism, wherein the fence mechanisms are arranged on two side supports of the double-cone dryer, the two fence mechanisms are connected through the locking mechanism to enclose a rotating space allowing the double-cone dryer, each fence mechanism comprises a cross rod, a fixed seat and a limit switch, the fixed seats are fixedly arranged on the double-cone dryer, one end of each cross rod is rotatably arranged on the fixed seat, and the limit switches are arranged on the fixed seats and used for sensing the cross rods. According to the invention, the fence mechanism capable of being switched on and off is arranged, so that the protection effect is achieved when the double-cone dryer works, and workers are prevented from entering the rotating radius of the double-cone dryer; when material loading and blowing, open rail mechanism, do not influence normal operation. In addition, the elastic mechanism is added, the attention and the degree of seriousness of workers during locking are improved, and the production safety is further improved.

Description

Protective device for double-cone dryer

Technical Field

The invention relates to the field of drying, in particular to a protection device for a double-cone dryer.

Background

The area of a divided field of a general double-cone dryer is very small, and the two areas cannot be respectively separated by a safe distance when the double-cone dryer rotates in a plant with limited height and width. In the process of feeding and discharging, the double-cone dryer can be operated only by cutting off the power, but the worker can only pause the double-cone dryer without cutting off the power, so that the operation is very dangerous. In addition, the double cone dryer may be damaged if workers come close to it by turning over during the production process.

Disclosure of Invention

Aiming at overcoming the defects in the prior art, the invention mainly aims to overcome the defects in the prior art and discloses a protective device for a double-cone dryer, which comprises two fence mechanisms and a locking mechanism, wherein the fence mechanisms are arranged on brackets at two sides of the double-cone dryer, the two fence mechanisms are connected through the locking mechanism to enclose a rotating space allowing the double-cone dryer, each fence mechanism comprises a transverse rod, a fixed seat and a limit switch, the fixed seat is fixedly arranged on the double-cone dryer, one end of the transverse rod is rotatably arranged on the fixed seat, and the limit switch is arranged on the fixed seat and is used for sensing the transverse rod.

Furthermore, the safety device also comprises an elastic mechanism, wherein the elastic mechanism is arranged on the fixed seat, and when the crosspiece rod is unlocked, the elastic mechanism is utilized to push the crosspiece rod away from the limit switch.

Further, the elastic mechanism comprises a spring seat, a fixing cap, a bolt and a spring, the spring is sleeved on the bolt, the bolt is arranged on the spring seat in a sliding mode through the fixing cap, and the bolt is elastically connected with the spring seat through the spring.

Further, the limit switch is a shock switch or a proximity switch.

Furthermore, the vertical blocking rod is vertically fixed on the transverse blocking rod, and the universal wheel is arranged at the bottom of the vertical blocking rod.

Furthermore, the locking mechanism comprises a U-shaped locking plate, a straight locking plate and a locking pin, wherein locking holes are correspondingly formed in the U-shaped locking plate and the straight locking plate and are respectively arranged on the two cross bar rods of the fence mechanism, and during locking, the straight locking plate is arranged in the middle of the U-shaped locking plate, and the locking pin is inserted into the locking holes to realize fixation.

Further, the rail mechanism further comprises two bar magnets, wherein the bar magnets are respectively arranged at the end parts of the cross bar rods 11 of the two rail mechanisms, and the magnetic poles of the opposite ends of the two bar magnets are the same.

The invention has the following beneficial effects:

according to the invention, the fence mechanism capable of being switched on and off is arranged, so that the protection effect is achieved when the double-cone dryer works, and workers are prevented from entering the rotating radius of the double-cone dryer; when material loading and blowing, open rail mechanism, do not influence normal operation. In addition, the elastic mechanism is added, the attention and the degree of seriousness of workers during locking are improved, and the production safety is further improved. Secondly, ingenious application magnet like-pole repulsion's principle for the staff need carefully overcome the mutual repulsion of magnet, makes the keyhole to it, and then just can lock rail mechanism, further improves the security of production.

Drawings

FIG. 1 is a schematic structural view of a protection device for a double-cone dryer according to the present invention;

FIG. 2 is a schematic view of the fence mechanism mounted on the frame of the double cone dryer;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic structural view of the locking mechanism;

FIG. 5 is a schematic structural view of the elastic mechanism;

the reference numbers are as follows:

1. rail mechanism, 2, locking mechanical system, 3, bipyramid desiccator, 4, elastic mechanism, 5, perpendicular shelves pole, 6, universal wheel, 7, bar magnet, 11, crosspiece pole, 12, fixing base, 13, limit switch, 21, U-shaped locking plate, 22, a word locking plate, 23, lockhole, 41, spring holder, 42, locking cap, 43, bolt, 44, spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

A protection device for a double-cone dryer is shown in figures 1-3 and comprises two fence mechanisms 1 and a locking mechanism 2, wherein the fence mechanisms 1 are arranged on brackets at two sides of the double-cone dryer 3, and the two fence mechanisms 1 are connected through the locking mechanism 2 to enclose a rotating space allowing the double-cone dryer; usually, the staff only works on one side, so one side is protected by the fence mechanism 1, and the other side can also pretend to protect by the fence mechanism 1 or pretend to fix the fence for protection. Wherein, rail mechanism 1 includes crosspiece pole 11, fixing base 12 and limit switch 13, and fixing base 12 is fixed to be set up on bipyramid desiccator 3, and the one end of crosspiece pole 11 is rotated and is set up on fixing base 12, and limit switch 13 sets up on fixing base 12 for response crosspiece pole 11. The limit switch 13 may be a contact switch or a proximity switch. When the double-cone dryer is used, the crosspiece rods 11 of the two side fence mechanisms 1 rotate oppositely to reach the finger locking position, namely the position after the two side fence mechanisms 1 are connected through the locking mechanism 2, the limit switch 13 senses the transverse baffle 11, at the moment, a signal is transmitted to the PLC, and then the double-cone dryer 3 can be started, so that safe operation is realized; in the production process, if the signal of the limit switch 13 disappears, the PLC controls the double-cone dryer 3 to stop running, so that the safety of workers is further ensured.

In one embodiment, as shown in fig. 1-3 and 5, the locking device further includes an elastic mechanism 4, the elastic mechanism 4 is disposed on the fixing base 12, and when the crosspiece 11 is unlocked, the elastic mechanism 4 pushes the crosspiece 11 away from the limit switch 13. Therefore, if the elastic mechanism 4 is not arranged, a worker may make a mistake in work, the fence mechanism 1 is not locked and is only hidden, when the double-cone dryer rotates, the fence mechanism 1 may be opened, and certain potential safety hazards exist; in addition, if the PLC sets the limit switch 13 and the signal disappears to force the machine to stop, the machine can be damaged. However, even if the worker pushes the fence mechanism 1 to the locking position after the elastic mechanism 4 is provided, if the locking mechanism 2 is not locked, the cross bar 11 is still pushed away from the limit switch 13 by the elastic mechanism 4, so that the PLC cannot receive the signal of the limit switch 13; even if the operator does not notice that the locking mechanism 2 is unlocked, it is still impossible to start the apparatus when starting it; the device can remind workers of concentrating attention, and the locking mechanism 2 is locked carefully, so that the safety is further improved; at the same time, forced stoppage of the double-cone dryer 3 due to unlocking of the fence mechanism 1 is avoided when the latter is in operation.

In a specific embodiment, as shown in fig. 1-3 and 5, the elastic mechanism 4 includes a spring seat 41, a fixing cap 42, a bolt 43, and a spring 44, the spring seat 41 is fixed on the fixing seat 12, the spring seat 41 is in a U-shaped structure, and two side walls thereof are provided with a through guide hole 45, the spring 44 is sleeved on the bolt 43, and the other end thereof passes through the guide hole 45 and is fixed by the fixing cap 42, at this time, the spring 44 is located between the spring seat 41 and the end of the bolt 43, and is under the tension of the spring 44, so that the fixing cap 42 is tightly attached to the spring seat; when one end of the bolt 43 is pushed so that the fixing cap 42 is away from the spring seat 41, the spring 44 accumulates force; when the hand is released, the tension of the spring 44 urges the bolt 43 to move in the opposite direction.

In one embodiment, as shown in fig. 1-4, the locking mechanism 2 comprises a U-shaped locking plate 21, a linear locking plate 22 and a locking pin (not shown), and the U-shaped locking plate 21 and the linear locking plate 22 are correspondingly provided with a locking hole 23 and are respectively arranged on the crosspiece 11 of the two rail mechanisms 1. When the fence mechanism 1 is locked, the linear locking plate 22 is arranged in the middle of the U-shaped locking plate 21, the three locking holes 23 are on the same axis, the locking pins are inserted into the three locking holes 23, the three locking holes 23 are connected together, and the locking of the locking mechanism 2 is realized.

In one embodiment, as shown in fig. 1-3, the rail mechanism further comprises two bar magnets 7, wherein the bar magnets 7 are respectively arranged at the ends of the crosspiece rods 11 of the two rail mechanisms 1, and the opposite ends of the two bar magnets 7 have the same magnetic pole. That is, when the crosspiece rods 11 on both sides reach the locking position, the two ends of the two bar magnets 7 are opposite, and if the locking mechanism 2 is not locked, the crosspiece rods 11 are rotated to both sides by the mutual repulsive force of the two bar magnets 7, so that the limit switches 13 cannot sense the crosspiece rods 11. The principle that like poles of magnets repel each other is utilized, the attention of workers is improved, the workers are prevented from being scattered too late, and in order to facilitate production, the workers are not responsible for themselves and only the crosspiece rod 11 is hidden. Because, if the staff connects the crosspiece rods 11 on both sides at will, then the U-shaped locking plate 21 and the in-line locking plate 22 repel each other, under the condition that the staff does not operate, the alignment of the three locking holes 23 cannot be realized, and the limit switch 13 on at least one side cannot sense the crosspiece rods 11. Secondly, after the lock pin is inserted, the lock pin is firmly clamped in the lock hole 23 by utilizing the principle that like poles of magnets repel each other.

In the above embodiment, one of the solutions of installing the elastic mechanism 4 and the solutions of installing the bar magnets 7 on the rail bars 11 of the two side fence mechanisms 1 is selected, and of course, they may be installed at the same time.

In one embodiment, as shown in fig. 1-3, the vehicle bumper further comprises a vertical bumper bar 5 and a universal wheel 6, wherein the vertical bumper bar 5 is vertically fixed on the horizontal bumper bar 11, and the universal wheel 6 is arranged at the bottom of the vertical bumper bar 5. The vertical bar 5 is used to support the crosspiece 11, reduce the load of the rotation point between the crosspiece 11 and the fixed seat 12, and maintain the horizontal arrangement of the crosspiece 11. The universal wheel 6 is used for supporting and guiding the horizontal rotation of the crosspiece rod 11.

When the invention is used, as shown in fig. 1-5, a worker rotates the crosspiece rods 11 at two sides in opposite directions, so that the linear locking plate 22 at the end of the crosspiece rod 11 is placed in the U-shaped locking plate 21 (i.e. the fence mechanism 1 reaches a locking position), and the U-shaped locking plate 21 and the linear locking plate 22 are connected and fixed through the locking pin; at this time, the limit switches 13 on both sides sense the crosspiece rods 11, respectively; the signal is transmitted to the PLC, and the PLC can control the double-cone dryer 3 to start at the moment. However, if the locking of the fence mechanism 1 is released, as long as one of the limit switches 13 disappears, the PLC immediately controls the double-cone dryer 3 to be forcibly stopped, so that the safety of workers is protected.

The above are merely preferred embodiments of the present invention, and are not intended to limit the scope of the invention; it is intended that the following claims be interpreted as including all such alterations, modifications, and equivalents as fall within the true spirit and scope of the invention.

Claims

1. The protection device for the double-cone dryer is characterized by comprising two fence mechanisms and a locking mechanism, wherein the fence mechanisms are arranged on two side supports of the double-cone dryer, the two fence mechanisms are connected through the locking mechanism to form a rotating space allowing the double-cone dryer to rotate, each fence mechanism comprises a cross rod, a fixed seat and a limit switch, the fixed seats are fixedly arranged on the double-cone dryer, one ends of the cross rods are rotatably arranged on the fixed seats, and the limit switches are arranged on the fixed seats and used for sensing the cross rods.

2. The guard for a double-cone dryer according to claim 1, further comprising a resilient mechanism disposed on said holder, said resilient mechanism being configured to urge said trip bar away from said limit switch when said trip bar is unlocked.

3. The protection device for the double-cone dryer according to claim 2, wherein the elastic mechanism comprises a spring seat, a fixing cap, a bolt and a spring, the spring is sleeved on the bolt, the bolt is slidably arranged on the spring seat through the fixing cap, and the spring is used for elastically connecting the bolt with the spring seat.

4. A guard for a double cone dryer according to claim 1 wherein said limit switch is a shock switch or a proximity switch.

5. The shielding apparatus according to claim 1, further comprising a vertical blocking rod vertically fixed to said horizontal blocking rod, and a universal wheel disposed at a bottom of said vertical blocking rod.

6. The protection device of claim 1, wherein the locking mechanism comprises a U-shaped locking plate, a linear locking plate and a locking pin, the U-shaped locking plate and the linear locking plate are correspondingly provided with locking holes and are respectively arranged on the crosspiece rods of the two fence mechanisms, when the fence mechanisms are locked, the linear locking plate is arranged in the middle of the U-shaped locking plate, and the locking pin is inserted into the locking holes to realize fixation.

7. The shielding apparatus according to claim 6, further comprising two bar magnets respectively disposed at ends of said crosspiece rods of said two rail mechanisms, and opposite ends of said two bar magnets have the same magnetic polarity.

The U-shaped locking plate and the straight locking plate are made of magnetic materials, and the surface of the straight locking plate is the same as the magnetic pole of the U-shaped locking plate on one side adjacent to the straight locking plate.