Lifting door

Abstract

The utility model relates to a lifting door which comprises a box body with a channel D. The box body comprises a first column body and a second column body which form the channel D. The first column body and the second column body are connected with a door body. The lifting door is characterized in that a first guide rail is further vertically arranged on the first column body and / or the second column body, and a driving source and a transmission mechanism are arranged on the first guide rail. The transmission mechanism comprises a first transmission part located in the first guide rail and a second transmission part connected with the door body, and the first transmission part is directly or indirectly connected with the second transmission part, so that the door body is driven by the driving source to move along the first guide rail along with the first transmission part; compared with the prior art, the lifting door has the advantages that the first transmission part is arranged in the first guide rail, and the second transmission part drives the door body to move along the first guide rail, so that the lifting door is relatively stable in the operation process, relatively clean and quiet, and the service life of the lifting door is prolonged. Therefore, the overhead door can be suitable for use places with high requirements for cleanliness and noise.

Description

Technical Field

[0001] The utility model relates to the technical field of workshop equipment, in particular to a lifting door. Background Art

[0002] Lifting doors are widely used in industrial places such as machine tool workshops and warehouses to open and close passages. For traditional lifting doors, reference can be made to the chain-driven lifting door provided in the Chinese utility model patent "A chain-driven lifting door structure" with patent number CN202020732107.6 (publication number CN212507889U).

[0003] The traditional lifting door provided by the above patent usually uses a motor as a driving source, and transmits the power through a mechanically connected transmission mechanism such as a chain and a gear, thereby controlling the lifting and lowering movement of the lifting door. However, the traditional lifting door has certain defects during use. Specifically, there is relatively serious mechanical friction between the various transmission parts of the traditional mechanical transmission mechanism, such as the collision and friction between the various links of the chain, or the friction between the gears. In this process, the lifting door may not run smoothly, dust and other impurities may be generated due to friction, and relatively loud noise may be emitted. In addition, the traditional lifting door will collide with the ground at the moment of descending to closing, thereby generating a large noise, which is particularly unsuitable for use in places such as workshops that have high requirements for cleanliness and noise. Therefore, it is necessary to further improve the existing technology. Utility Model Content

[0004] The first technical problem to be solved by the utility model is to provide a lifting door which is relatively stable during operation in view of the above-mentioned existing technical status.

[0005] The second technical problem to be solved by the present invention is to provide a lifting door with relatively small noise at the moment of closing in view of the above-mentioned existing technical status.

[0006] The technical solution adopted by the utility model to solve the first technical problem is: the lifting door includes:

[0007] A box body, one side of which is provided with a channel D communicating with the outside, and the box body includes a first column and a second column constituting the channel D;

[0008] A door body, connected to the first column and the second column, capable of shielding at least a portion of the passage D;

[0009] It is characterized by also including:

[0010] A first guide rail is vertically arranged on the first column and / or the second column;

[0011] A driving source and a transmission mechanism are provided on the first guide rail, and the transmission mechanism includes a first transmission member located inside the first guide rail and a second transmission member connected to the door body. The first transmission member is directly or indirectly connected to the second transmission member, so that the door body is driven by the driving source to follow the first transmission member to move along the first guide rail to open and close the channel D.

[0012] In order to enable the driving source to drive the first transmission member to move along the first guide rail, preferably, the driving source is an air source, a driving space is formed inside the first guide rail, and the first transmission member divides the driving space into relatively independent first driving chamber and second driving chamber. Correspondingly, a flow port connected to the driving source fluid is opened on the first guide rail corresponding to the first driving chamber and / or the second driving chamber. Through the flow port, the air source can adjust the pressure difference between the first drive chamber and the second drive chamber. When the pressure difference between the first drive chamber and the second drive chamber is sufficient to overcome the load of the first transmission member, the first transmission member can move along the first guide rail, thereby driving the door body to move along the first guide rail through the second transmission member connected to the first transmission member; further, the first transmission member is arranged inside the first guide rail, so that even if there is a certain friction between the first transmission member and the inner wall of the first guide rail, the dust generated by the friction will be covered inside the first guide rail; in addition, since the first guide rail is arranged vertically, assuming that the first drive chamber is located in the lower section of the first guide rail, then under the action of the weight of the door body, it is actually only necessary to adjust the pressure of the first drive chamber to control the first transmission member to move along the first guide rail, but the second drive chamber is provided in view of the subsequent installation of a counterweight for balancing the weight of the door body to reduce the burden on the drive source.

[0013] Furthermore, in order to reduce the friction between the second transmission member and the first guide rail, preferably, the second transmission member is magnetically attached to the first transmission member, thereby driving the door body to move along the first guide rail to open and close the channel D. Since the second transmission member is magnetically attached to the first transmission member, it is even possible to achieve complete non-contact between the second transmission member and the first guide rail, thereby making the operation of the door body relatively smooth, clean and quiet.

[0014] In order to detect the opening and closing state of the channel D, preferably, the door body is provided with a detection mechanism for detecting the position of the door body. Providing the detection mechanism is conducive to controlling the driving source to prevent the driving source from still driving the first transmission member to move downward along the first guide rail when the channel D is already closed.

[0015] Furthermore, in order to enable the detection mechanism to detect the bottom and top of the box, preferably, the detection mechanism includes a first detection member for detecting the bottom of the box, the first detection member is fixedly connected to the lower part of the door body, and correspondingly, the detection mechanism also includes a second detection member for detecting the top of the box, the second detection member is located above the first detection member and fixedly connected to the door body. The first detection member and the second detection member can be selected from detection members such as distance sensors and contact switches.

[0016] In order to solve the second technical problem, preferably, a buffer is further provided at the lower part of the door body. When the door body moves downward to the point where it is about to contact the bottom of the box, the buffer can first contact the bottom of the box to buffer the door body; the buffer can be made of elastic parts such as springs and silicone to buffer the door body, thereby preventing the door body from making noise due to excessive impact when it moves downward to the bottom of the box; in addition, according to actual needs, a buffer can also be provided at the upper part of the door body to buffer the door body when it is raised to the top of the box, but considering that the impact of the door body when it descends is usually greater than that of the door body when it rises, the buffer is mainly provided at the lower part of the door body.

[0017] In order to reduce the burden on the driving source, preferably, a counterweight mechanism for reducing the burden on the driving source is further provided in the box body, and the counterweight mechanism is connected to the door body and can give the door body an upward force. The counterweight mechanism is provided to give the door body an upward force, so that the driving source can drive the door body to move along the first guide rail with a smaller output power.

[0018] Furthermore, in order to achieve a reasonable distribution of the weight of the counterweight mechanism, preferably, the counterweight mechanism includes a first counterweight and a second counterweight located in the housing on the other side of the channel D, the first counterweight and the second counterweight are respectively close to the side where the first column and the second column are located, the first counterweight is connected to the door body through a first traction rope, and correspondingly, a first matching portion adapted to the first traction rope is provided on the door body, and similarly, the second counterweight is connected to the second matching portion on the door body through a second traction rope. The first counterweight and the second counterweight are arranged on the side where the first column and the second column are respectively located, so that the two forces acting on the door body can also act on the left and right sides of the door body, which is conducive to maintaining the balance of the door body; in addition, according to actual needs, the weight balancing of the first counterweight and the second counterweight can have different schemes, for example, the weight of the first counterweight and the second counterweight can be selected to be the same, and the total weight of the two is equal to the door body, thereby minimizing the burden on the driving source.

[0019] Further design, in order to realize that the counterweight mechanism can exert an upward force on the door body, preferably, the top of the box body is provided with a first pulley group for guiding the first traction rope, and the first pulley group has a pulley higher than the first counterweight and the first matching part, so that the first counterweight and the door body are subjected to an upward force from each other. Similarly, the top of the box body is also provided with a second pulley group corresponding to the second traction rope. It should be noted that the first pulley group has a pulley higher than the first counterweight and the first matching part, so that the first counterweight and the door body are subjected to an upward force from each other. In fact, the first pulley group is provided with individual pulleys lower than the first counterweight and the first matching part, which can also meet the needs, and the second pulley group is the same.

[0020] The "fluid connection" referred to in the present invention refers to the spatial position relationship between two parts or parts (hereinafter collectively referred to as the first part and the second part respectively), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

[0021] Compared with the prior art, the advantages of the present invention are: by arranging a first transmission member capable of moving along the first guide rail inside the first guide rail, and by driving the door body to move along the first guide rail through a second transmission member connected to the first transmission member, the lifting door can be relatively stable during operation, and at the same time relatively clean and quiet, so that the lifting door can be suitable for use in workshops and other places with high requirements on cleanliness and noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the lifting door in the embodiment of the utility model;

[0023] Figure 2 This is a structural schematic diagram of the lifting door at another angle in an embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the first guide rail and the transmission mechanism in the embodiment of the utility model;

[0025] Figure 4 It is a schematic diagram of the structure of the second guide rail, the auxiliary slider and the second detection member in the embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the first detection member and the buffer member in the embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of a state in which the channel D of the lifting door in the embodiment of the utility model is in an open state;

[0028] Figure 7 This is a schematic diagram of a state in which the door body of the lifting door in the embodiment of the utility model is in a lowered state;

[0029] Figure 8 This is a schematic diagram of a state in which the channel D of the lifting door in the embodiment of the utility model is in a closed state. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with specific embodiments.

[0031] like Figures 1 to 5 As shown in FIG. , it is a preferred embodiment of the present utility model. Figure 1 As shown, the lifting door in this embodiment includes a box body 1, one side of which is provided with a channel D communicating with the outside, and the box body 1 includes a first column 11 and a second column 12 constituting the channel D. A door body 2 connected to the first column 11 and the second column 12 is also provided on the box body 1, and the door body 2 can shield at least a part of the channel D. A first guide rail 3 is also vertically arranged on the first column 11, and a driving source and a transmission mechanism 31 are provided on the first guide rail 3. The transmission mechanism 31 includes a first transmission member 32 located inside the first guide rail 3 and a second transmission member 33 connected to the door body 2. The first transmission member 32 is directly or indirectly connected to the second transmission member 33, so that the door body 2 is driven by the driving source to follow the first transmission member 32 to move along the first guide rail 3 to open and close the channel D. Since only the first guide rail 3 is provided on the first column 11 in the present embodiment, in order for the door body 2 to run smoothly along the first guide rail 3, a second guide rail 3' for assisting the first guide rail 3 is also provided on the second column 12 in the present embodiment. Correspondingly, the door body 2 is connected with an auxiliary slider 31' capable of moving along the second guide rail 3'. The second guide rail 3' is only used to assist the door body 2 to move smoothly and has no driving function.

[0032] Further, in order to realize that the driving source can drive the first transmission member 32 to move along the first guide rail 3, see Figure 3The driving source is an air source, a driving space 34 is formed inside the first guide rail 3, and the first transmission member 32 divides the driving space 34 into a relatively independent first driving chamber 341 and a second driving chamber 342. Correspondingly, the first guide rail 3 is provided with a first flow port 35 and a second flow port 36 in communication with the driving source fluid corresponding to the first driving chamber 341 and the second driving chamber 342. Through the first flow port 35 and the second flow port 36, the air source can adjust the pressure difference between the first driving chamber 341 and the second driving chamber 342, and when the pressure difference between the first driving chamber 341 and the second driving chamber 342 is sufficient to overcome the load of the first transmission member 32, the first transmission member 32 can move along the first guide rail 3, thereby driving the door body 2 to move along the first guide rail 3 through the second transmission member 33 connected to the first transmission member 32. In addition, the first transmission member 32 is arranged inside the first guide rail 3, so that even if there is a certain friction between the first transmission member 32 and the inner wall of the first guide rail 3, the dust generated by the friction will be wrapped inside the first guide rail 3. In order to further reduce the friction between the second transmission member 33 and the first guide rail 3, the second transmission member 33 in this embodiment is magnetically attached to the first transmission member 32, thereby driving the door body 2 to move along the first guide rail 3 to open and close the channel D. Since the second transmission member 33 is magnetically attached to the first transmission member 32, it is even possible to achieve that the second transmission member 33 and the first guide rail 3 are completely non-contacting, so that the operation process of the door body 2 is relatively smooth, clean and quiet. In addition, considering that if the door body 2 is directly dropped to the bottom of the box body 1, it may make a loud noise due to the impact, therefore, a buffer 5 is also provided at the lower part of the door body 2 in this embodiment. When the door body 2 moves downward to the bottom of the box body 1, the buffer 5 can first contact the bottom of the box body 1 to buffer the door body 2. The buffer 5 in this embodiment is an elastic body to buffer the door body 2, thereby preventing the door body 2 from making noise due to excessive impact when it moves downward to the bottom of the box body 1.

[0033] Considering that the door body 2 usually has a large weight, in order to reduce the burden on the driving source, a counterweight mechanism 6 for reducing the burden on the driving source is also provided in the housing 1 in this embodiment. The counterweight mechanism 6 is connected to the door body 2 and can give the door body 2 an upward force. The counterweight mechanism 6 is provided to give the door body 2 an upward force, so that the driving source can drive the door body 2 to move along the first guide rail 3 with a smaller output power. In order to achieve a reasonable distribution of the counterweight of the counterweight mechanism 6, the counterweight mechanism 6 includes a first counterweight 61 and a second counterweight 62 located on the other side of the housing 1 relative to the channel D. The first counterweight 61 and the second counterweight 62 are respectively close to the sides where the first column 11 and the second column 12 are located. The first counterweight 61 is connected to the door body 2 through a first traction rope 63. Correspondingly, a first matching portion 21 adapted to the first traction rope 63 is provided on the door body 2. Similarly, the second counterweight 62 is connected to the second matching portion 22 on the door body 2 through a second traction rope 64. See. Figure 3 In this embodiment, the first matching portion 21 is provided on the first transmission member 32 so as to be connected with the door body 2; see Figure 4 In this embodiment, the second matching portion 22 is provided on the auxiliary slider 31' so as to be connected to the door body 2. The first counterweight 61 and the second counterweight 62 are arranged on the sides close to the first column 11 and the second column 12 respectively, so that the two forces acting on the door body 2 can also act on the left and right sides of the door body 2, thereby facilitating the balance of the door body 2. In order to realize that the counterweight mechanism 6 can give the door body 2 an upward force, that is, it can convert the gravity of the first counterweight 61 and the second counterweight 62 into an upward force acting on the door body 2, a first pulley group 65 for guiding the first traction rope 63 is provided at the top of the box body 1. The first pulley group 65 has a pulley higher than the first counterweight 61 and the first matching portion 21, so that the first counterweight 61 and the door body 2 are subjected to the upward force from each other. Similarly, a second pulley group 66 corresponding to the second traction rope 63 is also provided at the top of the box body 1.

[0034] In order to detect the opening and closing state of the channel D, the driving source is prevented from driving the first transmission member 32 to move downward along the first guide rail 3 when the channel D is already closed. In this embodiment, a detection mechanism 4 for detecting the position of the door body 2 is provided on the door body 2. The detection mechanism 4 is provided to help control the driving source to prevent the driving source from driving the first transmission member 32 to move downward along the first guide rail 3 when the channel D is already closed. Specifically, see Figure 1, the detection mechanism 4 includes a first detection member 41 for detecting the bottom of the box body 1, and the first detection member 41 is fixedly connected to the lower part of the door body 2. Correspondingly, the detection mechanism 4 also includes a second detection member 42 for detecting the top of the box body 1, and the second detection member 42 is located above the first detection member 41 and fixedly connected to the door body 2. In this embodiment, the first detection member 41 and the second detection member 42 are both contact switches, such as Figure 4 As shown, the second detecting member 42 in this embodiment is fixedly connected to the door body 2 via the auxiliary sliding block 31 ′.

[0035] Taking the change of channel D from an open state to a closed state as an example, the use process of the lifting door provided in this embodiment is as follows:

[0036] like Figure 6 As shown, at this time, the channel D of the lifting door is in an open state, and the second detection member 42 is located at the top of the box body 1; see Figure 7 Under the action of the driving source, the door body 2 of the lifting door begins to descend along the first guide rail 3. Obviously, compared with Figure 6 , Figure 7 The first counterweight 61 and the second counterweight 62 in the embodiment are raised; Figure 8 , the door body 2 has completely dropped to the bottom of the box body 1 and completely blocked the channel D, so that the channel D enters a closed state. At this time, the first detection member 41 and the buffer member 5 are located at the bottom of the box body, the buffer member 5 has buffered the door body 2, the first detection member 41 has detected the bottom of the box body 1, and the first counterweight member 61 and the second counterweight member have risen to near the top of the box body 1.

Claims

1. A lifting door, comprising: A box body (1), one side of which is provided with a channel (D) communicating with the outside, and the box body (1) comprises a first column (11) and a second column (12) constituting the channel (D); A door body (2) connected to the first column (11) and the second column (12), capable of shielding at least a portion of the passage (D); It is characterized in that Also included are: A first guide rail (3) vertically arranged on the first column (11) and / or the second column (12); A driving source and a transmission mechanism (31) are provided on the first guide rail (3), and the transmission mechanism (31) includes a first transmission member (32) located inside the first guide rail (3) and a second transmission member (33) connected to the door body (2), and the first transmission member (32) is directly or indirectly connected to the second transmission member (33), so that the door body (2) is driven by the driving source to follow the first transmission member (32) and move along the first guide rail (3) to open and close the channel (D).

2. The lifting door according to claim 1, characterized in that: The driving source is an air source, a driving space (34) is formed inside the first guide rail (3), the first transmission member (32) divides the driving space (34) into a relatively independent first driving chamber (341) and a second driving chamber (342), and correspondingly, a flow port (35; 36) connected to the driving source fluid is opened on the first guide rail (3) corresponding to the first driving chamber (341) and / or the second driving chamber (342).

3. The lifting door according to claim 2, characterized in that: The second transmission member (33) is magnetically attached to the first transmission member (32), thereby driving the door body (2) to move along the first guide rail (3) to open and close the channel (D).

4. The lifting door according to claim 3, characterized in that: The door body (2) is provided with a detection mechanism (4) for detecting the position of the door body (2).

5. The lifting door according to claim 4, characterized in that: The detection mechanism (4) includes a first detection member (41) for detecting the bottom of the box body (1), and the first detection member (41) is fixedly connected to the lower part of the door body (2). Correspondingly, the detection mechanism (4) also includes a second detection member (42) for detecting the top of the box body (1), and the second detection member (42) is located above the first detection member (41) and fixedly connected to the door body (2).

6. The lifting door according to any one of claims 1 to 5, characterized in that: A buffer member (5) is also provided at the lower part of the door body (2).

7. The lifting door according to any one of claims 1 to 5, characterized in that: A counterweight mechanism (6) for reducing the burden on the driving source is also provided in the box body (1); the counterweight mechanism (6) is connected to the door body (2) and is capable of imparting an upward force to the door body (2).

8. The lifting door according to claim 7, characterized in that: The counterweight mechanism (6) includes a first counterweight (61) and a second counterweight (62) located in the box (1) on the other side of the channel (D), the first counterweight (61) and the second counterweight (62) being respectively close to the side where the first column (11) and the second column (12) are located, the first counterweight (61) is connected to the door body (2) through a first traction rope (63), and correspondingly, a first matching portion (21) adapted to the first traction rope (63) is provided on the door body (2), and similarly, the second counterweight (62) is connected to the second matching portion (22) on the door body (2) through a second traction rope (64).

9. The lifting door according to claim 8, characterized in that: The top of the box body (1) is provided with a first pulley group (65) for guiding the first traction rope (63), and the first pulley group (65) has a pulley higher than the first counterweight (61) and the first matching part (21), so that the first counterweight (61) and the door body (2) are subjected to upward force from each other. Similarly, the top of the box body (1) is also provided with a second pulley group (66) corresponding to the second traction rope (64).

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