Safety protection device for gas hood lifting door of paper machine

Abstract

The utility model relates to a paper machine gas hood lifting door safety protection device which comprises a gas hood door, a driving roller is arranged above the gas hood door, a steel wire rope used for lifting the gas hood door is arranged on the driving roller in a rolling mode, ladder type rails are arranged on the two sides of the gas hood door, and walking wheels matched with the ladder type rails are rotationally installed on the gas hood door. A first stop assembly is arranged on the portion, above the walking wheel, of the gas hood door, a second stop assembly is arranged on the portion, below the walking wheel, of the gas hood door, and the walking wheel is clamped by the first stop assembly and the second stop assembly when the steel wire rope is not stressed or fractured suddenly through cooperation of the walking wheel and the ladder type track, so that the gas hood door is prevented from falling down; the safety protection device is simple in structure, safe, reliable and high in stability.

Description

Technical Field

[0001] The utility model relates to the technical field of paper machine equipment, in particular to a safety protection device for a paper machine air hood lifting door. Background Art

[0002] In the modern papermaking industry, paper drying is an essential process. The enclosed air hood is a closed bungalow-style aluminum alloy hood used in the drying and gluing sections of the papermaking machine. Its function is to recycle the steam generated by the paper machine for better drying and energy saving. Modern papermaking enclosed air hoods have added air supply and paper stabilization functions, which balance the moisture content of the paper, stabilize the paper, and provide better drying. Therefore, enclosed air hoods have become an indispensable part of papermaking equipment.

[0003] The operating side of the hood is generally designed with a liftable electric hood door. For example, application number CN202320917049.8 discloses a paper machine hood door lifting device, including a hood body and a hood door. The hood door is slidably connected to the hood body, and the hood door can move up and down relative to the hood body. Two traction machines are arranged on the top of the hood body, and the traction wheels of each traction machine are respectively wound with a set of steel wire ropes, one end of each set of steel wire ropes is connected to a counterweight assembly, and the other end is connected to the hood door. During the operation of the paper machine, the staff needs to monitor the operation status of the paper machine. If an abnormal situation is found, the operating personnel need to enter and exit the hood door for processing. Since the hood door has no safety protection device, if the hood door has a broken rope, it will affect the safety of the personnel and the hood door body. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a safety protection device for a paper machine air hood lifting door.

[0005] The purpose of the utility model can be achieved through the following technical scheme: a paper machine air hood lifting door safety protection device, comprising an air hood door, a driving roller is provided above the air hood door, a steel wire rope for lifting the air hood door is wound on the driving roller, ladder tracks are provided on both sides of the air hood door, and walking wheels that cooperate with the ladder tracks are rotatably installed on the air hood door, a first stop assembly is provided on the air hood door above the walking wheel, and a second stop assembly is provided on the air hood door below the walking wheel. The first stop assembly includes a baffle fixedly arranged on the air hood door, a sliding rod is slidably provided on the baffle, a first spring is sleeved on the sliding rod, one end of the first spring abuts against the bottom of the baffle, one end of the sliding rod is hingedly connected to the first stop plate through a connecting head, one end of the first stop plate is rotatably connected to the air hood door, a shackle is hingedly provided at the middle part of the first stop plate, and the first stop plate is connected to the steel wire rope through the shackle.

[0006] Preferably, the second stop assembly comprises a second stop plate rotatably connected to the air hood door, and one end of the second stop plate is rotatably provided with a connecting rod hinged to the end of the sliding rod.

[0007] Preferably, a second spring is provided between the air hood door and the second stop plate, a telescopic rod is rotatably connected to the air hood door, one end of the telescopic rod is hinged to the second stop plate, and the second spring is sleeved on the telescopic rod.

[0008] Preferably, a steering transition wheel for changing the force direction of the wire rope is provided on the upper rotation of the air hood door.

[0009] Preferably, an adjustment assembly is provided between the wire rope and the shackle.

[0010] Preferably, the adjustment assembly is a turnbuckle bolt.

[0011] The beneficial effect of the utility model is that the utility model cooperates with the walking wheel and the ladder track. When the wire rope is suddenly not stressed or broken, the first stop assembly and the second stop assembly clamp the walking wheel to prevent the air hood door from falling, thereby ensuring the safety of equipment and personnel. The utility model has a simple structure, is safe and reliable, and has high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the utility model. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0013] Figure 1 The utility model shows the structural intention of a safety protection device for a paper machine air hood lifting door.

[0014] Figure 2 The utility model shows a structure diagram of a first stop assembly and a second stop assembly of a safety protection device for a paper machine air hood lifting door.

[0015] Figure 3 The utility model shows another structural intention of a safety protection device for a paper machine air hood lifting door.

[0016] The numbers shown in the figure represent: 1. air hood door; 2. driving roller; 3. wire rope; 4. ladder track; 5. walking wheel; 6. first stop assembly; 601. baffle; 602. slide bar; 603. first spring; 604. connector; 605. first stop plate; 606. shackle; 7. second stop assembly; 701. second stop plate; 702. connecting rod; 703. second spring; 704. telescopic rod; 8. steering transition wheel; 9. adjustment assembly. DETAILED DESCRIPTION

[0017] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0018] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0019] The following will be combined with specific embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the utility model.

[0020] Embodiment 1:

[0021] See also Figures 1 to 3As shown, the structure of the utility model is as follows: a safety protection device for lifting the air hood door of a paper machine comprises an air hood door 1, a driving roller 2 is arranged above the air hood door 1, a steel wire rope 3 for lifting the air hood door 1 is wound on the driving roller 2, ladder tracks 4 are arranged on both sides of the air hood door 1, a running wheel 5 cooperating with the ladder track 4 is rotatably mounted on the air hood door 1, a first stopper assembly 6 is arranged above the running wheel 5 on the air hood door 1, and a second stopper assembly 6 is arranged below the running wheel 5 on the air hood door 1 The stop assembly 7, the first stop assembly 6 comprises a baffle 601 fixedly arranged on the gas hood door 1, a slide bar 602 is slidably arranged on the baffle 601, a first spring 603 is sleeved on the slide bar 602, one end of the first spring 603 abuts against the bottom of the baffle 601, one end of the slide bar 602 is hinged with a first stop plate 605 through a connector 604, one end of the first stop plate 605 is rotatably connected to the gas hood door 1, and a shackle 606 is hinged at the middle of the first stop plate 605, When the first stop plate 605 is moved upward, the second stop plate 605 is disengaged from the travel wheel 5, and the travel wheel 5 is disengaged from the travel wheel 5. When the first stop plate 605 is moved upward, the second stop plate 605 is disengaged from the travel wheel 5. When the first stop plate 605 is moved upward, the second stop plate 605 is disengaged from the travel wheel 5. When the first stop plate 605 is moved upward, the second stop plate 605 is disengaged from the travel wheel 5.

[0022] like Figure 2 , Figure 3 As shown, the second stop assembly 7 includes a second stop plate 701 rotatably connected to the air hood door 1, and one end of the second stop plate 701 is rotatably provided with a connecting rod 702 hinged to the end of the slide bar 602. Specifically, the slide bar 602 drives the second stop plate 701 to rotate through the connecting rod 702 while moving upward, so that the second stop plate 701 is separated from the running wheel 5. At this time, the running wheel 5 can rotate normally. If the wire rope 3 suddenly breaks or is not under force, the elastic potential energy of the first spring 603 quickly pulls down the slide bar 602. When the slide bar 602 moves downward, it drives the second stop plate 701 to rotate through the connecting rod 702, so that one end of the second stop plate 701 is stuck to the running wheel 5 to prevent the air hood door 1 from falling.

[0023] like Figure 2 , Figure 3As shown, a second spring 703 is provided between the air hood door 1 and the second stop plate 701, and a telescopic rod 704 is rotatably connected to the air hood door 1. One end of the telescopic rod 704 is hinged to the second stop plate 701, and the second spring 703 is sleeved on the telescopic rod 704. Specifically, the second spring 703 is used to assist in pushing the second stop plate 701 to rotate, and the telescopic rod 704 is used to guide the second spring 703 to prevent the second spring 703 from bending during operation.

[0024] like Figure 1 As shown, a steering transition wheel 8 for changing the force direction of the wire rope 3 is provided on the upper rotation of the gas hood door 1. Specifically, the steering transition wheel 8 is used to make the wire rope 3 always vertically pull the gas hood door 1 to ensure that the gas hood door 1 can be raised and lowered normally.

[0025] When in use, the wire rope 3 is pulled upward through the driving roller 2, driving the first stop plate 605 to rotate and disengage from the walking wheel 5, and at the same time making the sliding bar 602 move up along the baffle 601. When the sliding bar 602 moves up, it simultaneously drives the second stop plate 701 to rotate and disengage from the walking wheel 5. At this time, the walking wheel 5 can move normally along the ladder track 4. When the sliding bar 602 moves up, it compresses the first spring 603 until the elastic potential energy stored in the first spring 603 supports the air hood door 1. At this time, the wire rope 3 begins to drive the air hood door 1 to rise, and at the same time, the walking wheel 5 moves upward along the ladder track 4. If the wire rope 3 suddenly breaks or is not under force, the elastic potential energy of the first spring 603 is quickly released, driving the sliding bar 602 to pull down the first stop plate 605 and at the same time push the second stop plate 701 through the connecting rod 702, causing the first stop plate 605 and the second stop plate 701 to synchronously clamp the walking wheel 5 to prevent the air hood door 1 from falling, thereby ensuring the safety of equipment and personnel.

[0026] Embodiment 2:

[0027] In this embodiment, if Figures 1 to 3 As shown, an adjustment component 9 is provided between the wire rope and the shackle. The adjustment component 9 is a turnbuckle bolt. The turnbuckle bolt is used to adjust the two sides of the air hood door 1 to keep them level to prevent uneven force when the air hood door 1 rises or falls.

[0028] The utility model is further described above with the help of specific embodiments, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the utility model. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the utility model.

Claims

1. A paper machine air hood lifting door safety protection device, characterized in that: The invention comprises an air hood door (1), wherein a driving roller (2) is provided above the air hood door (1), a steel wire rope (3) for lifting the air hood door (1) is wound on the driving roller (2), ladder-type tracks (4) are provided on both sides of the air hood door (1), a running wheel (5) cooperating with the ladder-type track (4) is rotatably mounted on the air hood door (1), a first stopper assembly (6) is provided above the running wheel (5) on the air hood door (1), and a second stopper assembly (7) is provided below the running wheel (5) on the air hood door (1), wherein the first stopper assembly (6) comprises a fixing assembly (1) and a fixing assembly (2) fixedly arranged on the air hood door (1) A baffle (601) is mounted on the baffle (601), a slide bar (602) is slidably mounted on the baffle (601), a first spring (603) is sleeved on the slide bar (602), one end of the first spring (603) is in contact with the bottom of the baffle (601), one end of the slide bar (602) is hingedly connected to a first stop plate (605) via a connector (604), one end of the first stop plate (605) is rotatably connected to the air hood door (1), a shackle (606) is hingedly connected to the middle of the first stop plate (605), and the first stop plate (605) is connected to the steel wire rope (3) via the shackle (606).

2. A paper machine air hood lifting door safety protection device according to claim 1, characterized in that: The second stop assembly (7) comprises a second stop plate (701) rotatably connected to the air hood door (1); one end of the second stop plate (701) is rotatably provided with a connecting rod (702) hinged to the end of the sliding rod (602).

3. A paper machine air hood lifting door safety protection device according to claim 2, characterized in that: A second spring (703) is provided between the air hood door (1) and the second stop plate (701); a telescopic rod (704) is rotatably connected to the air hood door (1); one end of the telescopic rod (704) is hinged to the second stop plate (701); and the second spring (703) is sleeved on the telescopic rod (704).

4. A paper machine air hood lifting door safety protection device according to claim 1, characterized in that: A steering transition wheel (8) for changing the force direction of the steel wire rope (3) is rotatably provided above the air hood door (1).

5. The paper machine air hood lifting door safety protection device according to claim 1, characterized in that: An adjustment component (9) is provided between the steel wire rope (3) and the shackle (606).

6. A paper machine air hood lifting door safety protection device according to claim 5, characterized in that: The adjustment component (9) is a turnbuckle bolt.

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