Press roll stop assembly of paper machine

Abstract

The utility model relates to the technical field of stop assemblies, in particular to a stop assembly for a press roll of a paper machine, which comprises a flange plate fixed at the end of the press roll, a sliding block, a guide rail, a spring rod and a push rod, the sliding block and the guide rail are arranged on one side of the flange plate, and the sliding block slides back and forth along the guide rail. The other end of the spring rod is hinged to the sliding block, the push rods are arranged on the two sides of the sliding block respectively, and the push rods fix the sliding block or enable the sliding block to freely slide on the guide rail. According to the stop assembly for the press roller of the paper machine, the rotating speed of the press roller can be quickly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of a stop component, in particular to a stop component for a press roll of a paper machine. Background Art

[0002] The press roll on a paper machine is also called a press roller. The purpose of the press roller is to improve the dehydration efficiency, improve the paper quality, and reduce the adverse effects brought by pressing to the paper. The structural characteristics of the press roller are large volume, large mass, and low rotational speed (generally lower than 20 r / min). When the power of the press roller is removed, the press roller will continue to rotate for a long time due to inertia. In order to avoid safety accidents, other operations need to be carried out after the press roller has completely stopped. Since the waiting time is relatively long, the operation efficiency will be seriously reduced. Therefore, a corresponding stop component is needed to stop the press roller in time when the power is removed.

[0003] The existing brake components applied to wheels cannot be applied to the press roller. The main reason is that the mass of the press roller is too large, and the existing brake components mainly rely on friction to stop, which will cause relatively large wear. Content of the Utility Model

[0004] In order to overcome the deficiencies in the prior art, the utility model relates to a stop component for a press roll of a paper machine.

[0005] To achieve the above object, a stop component for a press roll of a paper machine disclosed by the utility model includes:

[0006] A flange fixed to the end of the press roll;

[0007] A slider and a guide rail arranged on one side of the flange, and the slider slides reciprocally along the guide rail;

[0008] A spring rod, one end of the spring rod is hinged to the flange, and the other end of the spring rod is hinged to the slider;

[0009] A push rod, the push rod is disposed on both sides of the slider, and the push rod either fixes the slider or enables the slider to freely slide on the guide rail.

[0010] Preferably, the push rod is a cylinder or a hydraulic cylinder, both ends of the guide rail are fixedly connected to the frame, the fixed end of the push rod is connected to the frame, the movable end of the push rod is connected with a top block, the top block is slidably connected to the guide rail, and the top block and the slider are opposite to each other left and right.

[0011] Preferably, a spring pressing block is connected to the opposite surface of the top block and the slider.

[0012] Preferably, the spring rod includes a sleeve, a core rod and a spring, one end of the core rod extends into the sleeve, one end of the spring is connected to the core rod, and the other end of the spring is connected to the sleeve.

[0013] Preferably, the flange is provided at one end of the pressure roller.

[0014] Preferably, the flanges are provided at both ends of the pressure roller.

[0015] Preferably, the spring rod is always inclined relative to the vertical direction.

[0016] The utility model has the following technical effects:

[0017] When the pressure roller works without stopping, the push rod is in a shortened state. At this time, the rotation of the pressure roller drives the spring rod, and the spring rod drags the slider to slide back and forth on the guide rail, and the spring in the spring rod will not be compressed or elongated; when the pressure roller needs to stop, the push rod extends and fixes the slider. At this time, the pressure roller is still rotating due to inertia, and the spring rod will be stretched or shortened, and the spring therein forces the speed of the pressure roller to rapidly decrease within one revolution after the power is removed; when the sensor provided on one side of the pressure roller detects that the speed of the pressure roller drops to the set value, the push rod will shorten again, and the elastic force of the spring will be released to make the slider slide, preventing the elastic force from continuing to act on the pressure roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural view of the cooperation between the utility model and the pressure roller;

[0019] Figure 2 is a schematic structural view of the utility model;

[0020] Figure 3 is a schematic structural view of the inside of the spring rod;

[0021] Figure 4 is a schematic structural view of the push rod, the frame, the slider, and the guide rail;

[0022] Figure 5 is a schematic structural view of the flange.

[0023] In the figure, 1, pressure roller; 2, flange; 3, slider; 4, guide rail; 5, spring rod; 6, push rod; 7, frame; 8, top block; 9, spring pressing block; 10, sleeve; 11, core rod; 12, spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following describes the principles and features of the present utility model in conjunction with the appended Figures 1-5 The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0025] A paper machine pressure roller stopping assembly includes a flange 2, a slider 3, a guide rail 4, a spring rod 5, and a push rod 6.

[0026] The flange 2 is fixedly connected to the end of the pressure roller 1 by a key connection. At the same time, the flange 2 is provided with a set screw hole for fixing to the pressure roller 1, and the set screw passes through the set screw hole to firmly fix the flange 2 and the pressure roller 1. Based on this, the flange 2 and the pressure roller 1 rotate synchronously. In one embodiment, the flange 2 is arranged at one end of the pressure roller 1; in another embodiment, the flange 2 is arranged at both ends of the pressure roller 1. A sensor for detecting its speed is arranged on one side of the pressure roller 1.

[0027] The slider 3 and the guide rail 4 are arranged on one side of the flange 2. Specifically in this embodiment, referring to the attached Figure 2 , the guide rail 4 and the slider 3 are arranged directly above the flange 2. The slider 3 reciprocates along the guide rail 4. Both ends of the guide rail 4 are fixedly connected to the frame 7. Here, no specific limitation is made on the specific structural form of the frame 7, and reference can be made to the attached Figure 2 The frame 7 can be made in the form of a hanging bracket or in the form of a common column. Its main purpose is to fix the guide rail 4. The slider 3 and the flange 2 are connected by a spring rod 5. Specifically, one end of the spring rod 5 is hinged to the slider 3 by an opening pin, and the other end of the spring rod 5 is hinged to the flange 2 by an opening pin. When the flange 2 rotates synchronously with the pressure roller 1, the slider 3 reciprocates along the guide rail 4 driven by the spring rod 5. Two push rods 6 should be provided and arranged on both sides of the slider 3. The push rods 6 either fix the slider 3 or make the slider 3 slide freely on the guide rail 4. Specifically, when the two side push rods 6 extend to clamp the slider 3, the slider 3 is fixed to the guide rail 4; when the two side push rods 6 shorten and separate from the slider 3, the slider 3 reciprocates between the two push rods 6 driven by the spring rod 5.

[0028] The push rod 6 is a hydraulic cylinder or a pneumatic cylinder. The fixed end of the push rod 6 is connected to the frame 7, and the movable end of the push rod 6 is connected with a top block 8. The top block 8 is slidably connected to the guide rail 4, and the top block 8 and the slider 3 are arranged opposite to each other left and right. The two side top blocks 8 are used to clamp the slider 3. Therefore, in order to avoid rigid collision when the top block 8 clamps the slider 3, a spring pressing block 9 is connected to the opposite surface of the top block 8 and the slider 3. The spring pressing block 9 is composed of a spring and a rigid plate. One end of the spring is connected to the top block 8, and the other end of the spring is connected to the rigid plate. Under the action of the spring pressing block 9, the slider 3 is slowly clamped.

[0029] Specifically, the spring rod 5 includes a sleeve 10, a core rod 11 and a spring 12. One end of the core rod 11 extends into the sleeve 10, and the other end of the core rod 11 extends outside the sleeve 10 and is hinged to the flange 2; one end of the sleeve 10 is hinged to the slider 3. The spring 12 is arranged inside the sleeve 10, wherein one end of the spring 12 is connected to the core rod 11 and the other end of the spring 12 is connected to the sleeve 10. When there is no external force, under the action of the spring 12, the core rod 11 has a tendency to slide into the sleeve 10. This spring 12 is a key component for stopping, so the model of the spring 12 should be selected according to the specific mass of the pressing roller 1, and the greater the elastic force of the selected spring 12, the better.

[0030] The stopping principle of this solution is as follows: when the pressing roller 1 works without stopping, the push rod 6 should be in a shortened state. At this time, the rotation of the pressing roller 1 drives the spring rod 5, and the spring rod 5 drags the slider 3 to slide back and forth on the guide rail 4. When the pressing roller 1 needs to stop, the push rod 6 extends and fixes the slider 3. At this time, the pressing roller 1 is still rotating due to inertia, and the spring rod 5 will be stretched or shortened. The spring 12 therein is forced to make the rotational speed of the pressing roller 1 drop rapidly within one revolution after the power is removed. When the sensor arranged on one side of the pressing roller 1 detects that the speed of the pressing roller 1 drops to the set value, the push rod 6 will shorten again, and the elastic force of the spring 12 will be released to make the slider 3 slide, preventing the elastic force from continuing to be applied to the pressing roller 1. It should be noted that the stopping component proposed in this solution cannot completely achieve the effect of reducing the rotational speed of the pressing roller to 0, but rapidly reduces the rotational speed of the pressing roller 1 after the power is removed, thereby reducing the time for the pressing roller to stop completely and improving the efficiency.

[0031] This solution is applicable to pressing rollers with low rotational speed (generally below 20 r / min) and large mass, and cannot be used for high-speed or ultra-high-speed pressing rollers.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A paper machine pressure roller stop assembly, characterized in that: include: A flange (2) fixed to the end of the pressure roller (1); A slider (3) and a guide rail (4) are arranged on one side of the flange (2), and the slider (3) slides back and forth along the guide rail (4); A spring rod (5), one end of the spring rod (5) is hinged to the flange (2), and the other end of the spring rod (5) is hinged to the slider (3); A push rod (6) is disposed on both sides of the slider (3). The push rod (6) either fixes the slider (3) or allows the slider (3) to slide freely on the guide rail (4).

2. The paper machine pressure roller stop assembly according to claim 1, characterized in that: The push rod (6) is a pneumatic cylinder or a hydraulic cylinder. Both ends of the guide rail (4) are fixedly connected to the frame (7). The fixed end of the push rod (6) is connected to the frame (7). The movable end of the push rod (6) is connected to a top block (8). The top block (8) is slidably connected to the guide rail (4). The top block (8) is opposite to the slider (3) on the left and right.

3. The paper machine pressure roller stop assembly according to claim 2, characterized in that: The opposite surface of the top block (8) and the sliding block (3) is connected with a spring pressing block (9).

4. The paper machine pressure roller stop assembly according to claim 1, characterized in that: The spring rod (5) comprises a sleeve (10), a core rod (11) and a spring (12); one end of the core rod (11) extends into the sleeve (10); one end of the spring (12) is connected to the core rod (11); and the other end of the spring (12) is connected to the sleeve (10).

5. The paper machine pressure roller stop assembly according to claim 1, characterized in that: The flange (2) is arranged at one end of the pressure roller (1).

6. The paper machine pressure roller stop assembly according to claim 1, characterized in that: The flanges (2) are arranged at both ends of the pressure roller (1).

7. The paper machine pressure roller stop assembly according to claim 1, characterized in that: The spring rod (5) is always in an inclined state relative to the vertical direction.

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