CN219241701U - Electric lifting door device for vertical squeeze casting machine - Google Patents

Abstract

The utility model relates to an electric lifting door device for a vertical squeeze casting machine, which can realize the up-and-down opening and closing of a lifting door in the use process of the squeeze casting machine and avoid shutdown maintenance due to the severe production environment of squeeze casting. The device mainly comprises a portal frame system, a transmission system and a travel protection system. The tubular guide rail is welded on the portal frame, and the V-shaped idler wheels are fixedly arranged on two sides of the lifting door main body. One end of the chain is connected with the roller, and the other end is connected with the counterweight to reduce the starting moment of the motor. The motor drives the transmission shaft to rotate through chain transmission to drive chains on two sides to move up and down, so that the rollers drive the lifting door to move up and down on the portal guide rail. The chains at two sides are wrapped by a protective cover. The lifting door body is made of light high-strength materials, and is heat-insulating and noise-reducing. The device has simple and compact structure, can adapt to severe spraying environment, is stable and safe, can obviously reduce the shutdown maintenance time and frequency of the squeeze casting machine, and reduces the production cost.

Description

Electric lifting door device for vertical squeeze casting machine

Technical Field

The utility model relates to the technical field of extrusion casting equipment, in particular to an electric lifting door device for a vertical extrusion casting machine.

Background

The vertical squeeze casting machine adopts a vertical lifting door, so that the casting machine can be effectively isolated from workshop environment, and compared with a horizontal moving safety door, the vertical squeeze casting machine occupies a relatively small space. During the use of the extrusion casting machine, a large amount of release agent needs to be sprayed on the die. Dispersion of the release agent causes the ambient environment to be moist and a large amount of dust to float; the common linear guide rail has poor reliability under the severe environment and is frequently required to be shut down for maintenance. Therefore, there is an urgent need to design a safety door device that is compact in structure, reliable in movement, dust-resistant, and moisture-resistant.

It should be noted that the above information disclosed in this background section is only for understanding the background of the inventive concept and, therefore, it may contain information that does not constitute prior art.

Disclosure of Invention

The research finds that: the moist surrounding of the vertical extrusion casting machine and the large amount of dust are the main reasons for the failure of the conventional vertical lifting door, and the reliability of the conventional linear guide rail is poor in the environment. The utility model aims to overcome the defects in the prior art and provides an electric lifting door device for a vertical squeeze casting machine.

The technical scheme adopted for solving the technical problems is as follows:

1) V-shaped rollers are fixedly arranged on two sides of the lifting door main body, and the lifting door is opened and closed up and down through the cooperation of the rollers and the tubular guide rail;

2) The idler wheels are connected with chains, and the starting moment of the motor is reduced through the counterweight;

3) The lifting door body is made of light high-strength materials;

4) One side of the lifting door, which is close to the vertical extrusion casting machine, is sequentially covered with a heat insulation layer, a fireproof layer and a reflecting layer.

Compared with the prior art, the utility model has remarkable advantages and beneficial effects, and is specifically embodied in the following aspects:

1) The lifting mechanism has a simple structure and is convenient to install;

2) The rollers are V-shaped rollers, so that the oil stain resistance is realized, and the requirement on the parallelism of the guide rail is not high;

3) The guide rail is made of common round steel and welded on the portal frame, so that the guide rail has good rigidity, oil stain resistance, maintenance free and low cost;

4) The counterweights and the chains are symmetrically arranged on the two sides of the portal, the portal is balanced in stress and stable in operation, and the chains on the two sides are wrapped by the protective cover, so that the portal can adapt to the severe spraying environment of the squeeze casting machine, and is high in safety;

5) The lifting door is covered with a heat insulation layer, a fireproof layer and a reflecting layer, and is heat-insulating and noise-reducing;

6) The motor has small driving torque, small power and low energy consumption.

In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the overall layout of the device of the present utility model;

FIG. 2 is a schematic view of the forward structure of the device of the present utility model;

FIG. 3 is a schematic view of a partially enlarged region of FIG. 2 in accordance with the present utility model;

FIG. 4 is a partially enlarged view of the second embodiment of FIG. 2;

FIG. 5 is a schematic side view of the apparatus of the present utility model;

fig. 6 is a schematic top view of the apparatus of the present utility model.

Wherein, each reference sign in the figure:

1. a door frame; 2. a door leaf;

21. a support A; 22. a support B; 23. a support C; 24. a support D;

3. a roller; 31. a bearing; 32. a roller bag body; 33. a set screw;

41. a chain A; 42. a chain B;

5. a counterweight; 6. a bearing with a seat; 7. a transmission shaft; 8. a motor;

91. a chain wheel A; 92. a chain wheel B; 93. a sprocket C; 94. a sprocket D;

10. a travel switch; 11. a safety cylinder; 12. a chain guard; 13. a tubular rail.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are, for example, capable of operation in other environments. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

Embodiment one.

The general layout of the device of the utility model is shown in figure 1 and is characterized in that: comprises a portal frame system, a transmission system and a travel protection system.

The mast system comprises a mast 1, a door leaf 2 and a tubular rail 13.

The transmission system comprises a roller 3, a chain A41, a chain B42, a counterweight 5, a belt seat bearing 6, a transmission shaft 7, a motor 8, a chain wheel A91, a chain wheel B92, a chain wheel C93 and a chain wheel D94.

The trip protection system includes: a travel switch 10, a safety cylinder 11 and a chain guard 12; the travel switch 10 and the safety cylinder 11 are fixedly arranged on the inner side of the portal 1; the chain protection cover 12 is arranged on two sides of the portal 1 to wrap the chains, so that the transmission system is prevented from contacting with pollutants.

When the door leaf 2 rises to the highest position, the safety cylinder 11 drives to extend, so that the door leaf 2 is prevented from accidentally falling; when the door 2 needs to be lowered from the highest position, the safety cylinder 11 is driven to retract.

The portal 1 is vertically and fixedly arranged on the ground; the portal frame 1 is of a portal frame structure and is connected with the ground through anchor screws;

the door leaf 2 is connected with the door frame 1 through chain transmission, and the door leaf 2 can move relative to the door frame 1;

the movement direction of the door leaf 2 is perpendicular to the ground.

The rotary motion of the motor 8 is converted into the up-and-down movement of the door leaf 2 through the chain A41 and the chain B42, and the specific scheme of the motion conversion is as follows:

as shown in fig. 2, a support a21, a support B22, a support C23, and a support D24 are symmetrically installed on the inner surface (the surface close to the casting machine) of the door leaf 2; the support A21 and the support B22 are positioned at the same height, and the support C23 and the support D24 are positioned at the same height; the support A21 is positioned above the support C23; the connecting line of the support A21 and the support C23 is parallel to the connecting line of the support B22 and the support D24;

as shown in fig. 4, the support a21 is further connected with a chain a41, the middle section of the chain a41 is meshed with the sprocket a91, and the other end of the chain a41 is connected with a counterweight 5; the other end of the counterweight 5 is connected with a chain B42, and the middle section of the chain B42 is meshed with a chain wheel B92; the other end support of the chain B42 is connected with the support C23;

as shown in fig. 3 and 5, the support a21 is provided with a roller 3, the rotation axis of which is perpendicular to the door leaf 2; the rollers 3 roll on tubular rails 13; the tubular guide rail 13 is vertically arranged and fixed on one side of the portal frame 1;

the support B22, the support C23 and the support D24 are also provided with rollers; the rollers 3 are respectively kept in contact with the tubular guide rails 13 on the side;

when the sprocket A91 rotates, it drives the counterweight 5 connected to the chain A41 to rise or fall; when the counterweight 5 is lifted, the support a21 and the support C23 move downward; when the counterweight 5 is lifted and lowered, the support a21 and the support C23 move downward;

as shown in fig. 2, the chain transmission mechanism of the support B22 and the support D24 on the other side of the door leaf 2 is symmetrical to the above mechanism; sprocket C93 is located at a symmetrical position at the same height as sprocket A91; at a symmetrical position at the same height as the sprocket B92 is a sprocket D94.

As shown in fig. 5 and 6, the sprocket a91 and the sprocket C93 are fixedly mounted on the rotating shaft 22; the transmission shaft 7 is coaxially assembled with the bearing 6 with a seat, and the bearing 6 with a seat is fixedly arranged above the upper beam of the portal 1; since the width of the lifting door in this embodiment reaches 5 meters, and the length of the transmission shaft 7 reaches 4.5 meters, 3 bearings 6 with seats are provided to support the transmission shaft 7 together, so that the latter is prevented from being obviously deflected due to large span, and the rotation stability of the transmission shaft 7 is improved.

Through the mechanism, the two side chain transmission mechanisms are synchronously driven to move through the transmission shaft 7, and finally the door leaf 2 is driven to move up and down.

Further, as shown in fig. 3, the roller 3 includes a bearing 31, a roller casing 32, and a set screw 33; the axis of rotation of said bearing 31 is perpendicular to the door leaf 2; the roller inclusion 32 is fixedly arranged on the outer ring of the bearing 31, and the set screw 33 fixedly connects the inner ring of the bearing 31 with the support 21.

The structure realizes that the plane of the door leaf 2 is always parallel to the plane of the door frame 2 in the up-and-down moving process of the door leaf 2.

In the first embodiment, although it is realized that the door leaf 2 can be smoothly controlled to move up and down by only one motor 8, since the movement of the roller 3 on the tubular rail 13 is also in the vertical direction, there is a possibility that the relative movement of the roller 3 and the tubular rail 13 slides. If the roller 3 slides on the tubular guide rail 13 and does not roll completely, the friction resistance between the roller 3 and the tubular guide rail increases (the sliding friction coefficient is larger than the rolling friction coefficient), the roller 3 wears rapidly (the larger the friction coefficient is, the wider the wear is), and the energy consumption increases (the larger the friction work is); the above problems are extremely disadvantageous for maintaining stability and low power consumption during continuous operation of the lift gate for a long period of time.

Embodiment two.

The second embodiment is improved on the basis of the first embodiment, and mainly solves the problem that sliding can occur in the long-term relative movement of the roller 3 and the tubular guide rail 13 during the up-and-down movement of the door leaf 2. If the roller 3 is in incomplete rolling contact with the tubular rail 13, sliding friction is generated between the roller 3 and the tubular rail 13 during the up-and-down movement of the door leaf 2, resulting in that the roller 3 and the tubular rail 13 wear against each other. And although in contact, the rollers 3 and the tubular guide 13 do not have pure rolling friction, the transmission efficiency is reduced and the energy consumption is increased.

As shown in fig. 3. Preferably, the bearing 31 is a deep groove ball bearing;

preferably, the roller bag body 32 is made of polytetrafluoroethylene, and an anti-slip structure is distributed on the outer surface of the roller bag body; the anti-slip structure prevents the roller package 32 from sliding relative to the tubular rail 13.

Rollers 3 are fixedly arranged on two sides of the lifting door body, and the rollers 3 drive the lifting door to move up and down along tubular guide rails 13 welded on the door frame. The up-and-down opening and closing of the lifting door are realized through the cooperation of the roller wheels 3 and the tubular guide rail 13;

as shown in fig. 4 and 5, the roller 3 is connected with a chain a41 and a chain B42, one end of the chain is connected with the roller 3, and the other end is connected with a counterweight 5, the weight of the counterweight 5 is equivalent to that of the door leaf 2, and the motor 8 can drive the door leaf 2 to lift with very low torque, so that the starting torque of the motor is reduced through the counterweight;

the rollers 3 drive the lifting door up and down along a tubular guide rail 13 welded on the portal frame. One end of the chain is connected with the roller 3, and the other end is connected with the counterweight 5. The transmission shaft 7 above the portal rotates under the drive of the motor 8 to drive the chain wheels at two ends to rotate, thereby driving the chains at two sides to move and realizing the up-and-down movement of the door. The inside of the door frame is provided with a travel switch 10 for controlling the lifting position of the door. The door rises to the proper position, and the safety cylinder 11 drives the extension to prevent the door from accidentally falling; when the door needs to be lowered, the safety cylinder 11 drives retraction.

The lifting door main body is a plate made of carbon fiber reinforced composite material; one side of the lifting door, which is close to the vertical extrusion casting machine, is sequentially covered with a heat insulation layer, a fireproof layer and a reflecting layer;

preferably, the average thickness of the lifting door body is 10mm;

preferably, if the heat insulating layer adopts silica nano aerogel, a fireproof layer is not required to be arranged; the average thickness of the silicon dioxide nano aerogel is more than 6mm;

preferably, the reflecting layer is aluminum foil, and the thickness is less than 0.1mm;

the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. An electric lifting door device for a vertical squeeze casting machine is characterized in that: the door frame system comprises a door frame (1), a door leaf (2) and a tubular guide rail (13).

2. An electric lifting gate device for a vertical squeeze casting machine according to claim 1, characterized in that: the tubular guide rail (13) is welded on the portal frame (1);

the door leaf (2) is sequentially covered with a heat insulation layer, a fireproof layer and a reflecting layer at one side of the door leaf close to the vertical extrusion casting machine;

if the heat insulation layer adopts the silicon dioxide nano aerogel, a fireproof layer is not arranged;

the average thickness of the silica nano aerogel is more than 6mm.

3. An electric lifting gate device for a vertical squeeze casting machine according to claim 1, characterized in that: the transmission system comprises a roller (3), a chain A (41), a chain B (42), a counterweight (5), a belt seat bearing (6), a transmission shaft (7), a motor (8), a chain wheel A (91), a chain wheel B (92), a chain wheel C (93) and a chain wheel D (94).

4. A motorized lift gate assembly for a vertical squeeze casting machine as defined in claim 3, wherein: the number of the rollers (3) is even, and the rollers are symmetrically arranged and fixedly arranged on two sides of the main body of the door leaf (2) of the lifting door, and the type of the rollers (3) is V-shaped rollers;

the roller (3) is matched with the tubular guide rail (13) to realize the up-and-down opening and closing of the lifting door;

the chain A (41) and the chain B (42) are respectively provided with one end connected with the roller (3) and the other end connected with the counterweight (5);

the weight of the counterweight (5) is 80% -90% of the weight of the door leaf (2);

the chain wheel A (91) and the chain wheel C (93) are coaxially and fixedly connected with the transmission shaft (7); the chain wheel B (92) and the chain wheel D (94) are respectively and fixedly arranged on the two side door frames (1);

the transmission shaft (7) is positioned above the portal (1) and driven by the motor (8) to rotate so as to drive the chain wheels A (91) and C (93) at the two ends to rotate; the chain wheel A (91) drives the chain wheel B (92) to rotate; the chain wheel C (93) drives the chain wheel D (94) to rotate; and then the chain A (41) and the chain B (42) are driven to synchronously move upwards or downwards, and finally the door leaf (2) is driven to synchronously move upwards or downwards.

5. An electric lifting gate device for a vertical squeeze casting machine according to claim 1, characterized in that: the travel protection system comprises a travel switch (10), a safety cylinder (11) and a chain guard (12).

6. An electric lift gate apparatus for a vertical squeeze casting machine as claimed in claim 5, wherein: the travel switch (10) and the safety cylinder (11) are fixedly arranged on the inner side of the door frame (1);

when the door leaf (2) rises to the highest position, the safety cylinder (11) drives the door leaf (2) to extend out, so that the door leaf (2) is prevented from accidentally falling;

when the door of the door leaf (2) needs to descend from the highest position, the safety cylinder (11) drives the retraction;

chain shields (12) are arranged on two sides of the portal (1) to wrap chains, so that the transmission system is prevented from being contacted with pollutants.

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