Opening device for door and air door

Abstract

The utility model belongs to the technical field of mine air door opening devices, and particularly discloses an opening device for a door and the air door. The opening device for the door comprises a first supporting seat, a supporting piece and a pinch bar, the first supporting seat is suitable for being connected with a door body, the door body is provided with a first side edge and a second side edge which are opposite, and the first side edge is hinged to a door frame. The supporting piece is rotationally arranged on the first supporting base and provided with a mounting hole. The pinch bar penetrates through the mounting hole, the pinch bar is provided with an operating end and a supporting end in the axial direction of the pinch bar, the pinch bar can move relative to the mounting hole so that the supporting end can abut against the door frame, the supporting end rotates around a fulcrum on the door frame to open the door body when the operating end is pulled, and the fulcrum is located on the side, close to the second side edge, of the door frame. The air door can be opened in a more labor-saving manner, personnel can pass through conveniently, and the production efficiency can be improved easily.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine air door opening devices, and in particular relates to an opening device for a door and an air door. Background Art

[0002] The damper is an indispensable part of the ventilation system in mines. The damper usually adopts an inclined door frame and door shaft to achieve automatic closing of the damper. However, due to the influence of the deadweight of the door leaf and the negative pressure of the mine, the damper is often difficult to open, which is inconvenient for people to pass, thereby reducing production efficiency. Summary of the invention

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the embodiment of the utility model provides an opening device for a door, which can make the air door opening more labor-saving, facilitate the passage of personnel, and help improve production efficiency.

[0004] The utility model also provides a door.

[0005] The opening device for a door according to an embodiment of the utility model comprises: a first support seat, the first support seat is suitable for being connected to a door body, the door body has a first side edge and a second side edge opposite to each other, the first side edge is hinged to a door frame, and the second side edge is separable from the door frame; a support member, the support member is rotatably arranged on the first support seat, the support member has a mounting hole; a pry bar, the pry bar passes through the mounting hole, the pry bar has an operating end and a supporting end in the axial direction of the pry bar, the pry bar is movable relative to the mounting hole so that the supporting end abuts against the door frame, and the operating end is pulled, and the supporting end rotates around a fulcrum on the door frame to open the door body, and the fulcrum is located on a side of the door frame adjacent to the second side edge.

[0006] When the door needs to be opened, the pry bar is moved and its position is adjusted so that the supporting end of the pry bar abuts against the fulcrum on the door frame. Then the operating end of the pry bar is pulled to rotate the pry bar around the fulcrum. The first supporting seat is connected to the door body, so that when the pry bar is rotated, the second side of the door can be driven to separate from the door frame. The process of opening the door with the pry bar utilizes the principle of lever, which can make the door opening process more labor-saving.

[0007] In this embodiment, the pry bar has a working state and a storage state. In the working state, the operating end and the supporting end are distributed in the horizontal direction. In the storage state, due to the effect of gravity, the operating end and the supporting end are distributed in the vertical direction.

[0008] In this embodiment, the first support seat is rotatably connected to the door body, so that the pry bar can be switched between the working state and the storage state.

[0009] In this embodiment, the end of the first support seat away from the door body has a U-shaped groove, the two ends of the support member are respectively rotatably connected to the first support seat, and the support member passes through the U-shaped groove, and the mounting hole is arranged at the position of the support member corresponding to the U-shaped groove.

[0010] In this embodiment, the door opening device further comprises a support stopper rod, wherein the support stopper rod is arranged at the support end, and a radial dimension of the support stopper rod in the mounting hole is larger than a diameter of the mounting hole.

[0011] In this embodiment, the support blocking rod is cylindrical, hemispherical or spherical.

[0012] In this embodiment, the door opening device further comprises a second support seat, wherein the second support seat is suitable for being arranged on the door frame, and the second support seat forms the fulcrum.

[0013] In this embodiment, a groove is provided on the second support seat, and the shape of the groove matches the shape of the support blocking rod, so that the support blocking rod can rotate in the groove.

[0014] The damper of this embodiment includes a door body, a door frame and the above-mentioned door opening device, and the first support seat is arranged on the door body.

[0015] In this embodiment, the damper further includes a handle, and the handle is disposed on the door body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the air door with the pry bar in the storage state according to the embodiment of the utility model.

[0017] Figure 2 It is a schematic diagram of the front view structure of the damper with the pry bar in the storage state according to an embodiment of the utility model.

[0018] Figure 3 yes Figure 2 Sectional view at AA in the middle;

[0019] Figure 4 It is a structural schematic diagram of the damper in an embodiment of the utility model when the pry bar is in a working state and the door body is in a closed state.

[0020] Figure 5 It is a structural schematic diagram of the air door of an embodiment of the utility model, in which the pry bar is in a working state and the door body is in an open state.

[0021] Reference numerals:

[0022] 101. Door body; 102. Door frame; 103. Handle.

[0023] 1. First support seat; 11. U-shaped notch; 2. Support member; 21. Mounting hole; 3. Pry bar; 31. Operating end; 32. Support end; 4. Support stop bar; 5. Second support seat; 51. Groove. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0025] In this embodiment, if Figures 1 to 5 As shown, the door opening device comprises a first support seat 1, a support member 2, and a pry bar 3. The first support seat 1 is suitable for being connected to a door body 101. The door body 101 has a first side edge and a second side edge opposite to each other. The first side edge is hinged to a door frame 102, and the second side edge is separable from the door frame 102. The support member 2 is rotatably arranged on the first support seat 1, and a mounting hole 21 is provided on the support member 2. The pry bar 3 passes through the mounting hole 21. The pry bar 3 has an operating end 31 and a supporting end 32 in the axial direction of the pry bar 3. The pry bar 3 is movable relative to the mounting hole 21 so that the supporting end 32 abuts against the door frame 102. The operating end 31 is pulled, and the supporting end 32 rotates around a fulcrum on the door frame 102 to open the door body 1. The fulcrum is located on a side of the door frame 102 adjacent to the second side edge.

[0026] Specifically, the second side of the door body 101 is separable from the door frame 102, which means that the door body 101 can rotate around the hinge between the first side and the door frame 102, so that the second side is away from the door frame 102 on the same side to open the door. The specific connection structure between the door body 101 and the door frame 102 is conventional prior art and will not be described in detail here.

[0027] For example, the support member 2 is cylindrical, so as to be rotatably connected to the first support seat 1 .

[0028] When the door needs to be opened, the pry bar 3 is moved and the position of the pry bar 3 is adjusted so that the supporting end 32 of the pry bar 3 abuts against the fulcrum on the door frame 102, and then the operating end 31 of the pry bar 3 is pulled to rotate the pry bar 3 around the fulcrum. The first supporting seat 1 is connected to the door body 101, so that when the pry bar 3 is rotated, the second side of the door can be driven to separate from the door frame 102. The process of opening the door with the pry bar 3 utilizes the lever principle, which can make the door opening process more labor-saving.

[0029] In this embodiment, if Figure 1 , Figure 4 and Figure 5 As shown, the pry bar 3 has a working state and a storage state. In the working state, the operating end 31 and the supporting end 32 are distributed in the horizontal direction. In the storage state, due to the effect of gravity, the operating end 31 and the supporting end 32 are distributed in the vertical direction.

[0030] It can be understood that when the crowbar 3 is in a working state, the operating end 31 and the supporting end 32 are distributed in a horizontal direction, which can facilitate the operator to apply force to the operating end 31 in the horizontal direction. When the crowbar 3 is in a stored state, the operating end 31 and the supporting end 32 are distributed in a vertical direction, so that the projection of the crowbar 3 on the plane where the door body 101 is located is located inside the door body 101, that is, the crowbar 3 will not extend out of the door body 101, thereby preventing the crowbar 3 from extending out of the door body 101 and affecting the passage of personnel and equipment and causing safety hazards.

[0031] In this embodiment, the first support seat 1 is rotatably connected to the door body 101 so that the pry bar 3 can be switched between a working state and a storage state.

[0032] For example, the first support seat 1 includes a first connector and a support body, the first connector includes a first connecting shaft and a first plug, the first connecting shaft passes through the door body 101, and the first connecting shaft is rotatably connected to the door body 101, and first plugs are provided at both ends of the first connecting shaft to reliably connect the first connector and the door body 101. The support body is provided on the side of the first plug away from the door body 101, and the support body is located on the side of the door body 101 in the opening direction, and the support member 2 is provided on the support body.

[0033] The rotation axis of the first support seat 1 and the rotation axis of the support member 2 are perpendicular to each other. The axis around which the first support seat 1 rotates is perpendicular to the plane where the door body 101 is located. The axis around which the support member 2 rotates is parallel to the plane where the door body 101 is located. When the pry bar 3 is adjusted so that its axis is in the horizontal direction, it is convenient to apply horizontal force to the pry bar 3.

[0034] It is understandable that by rotatably connecting the first support seat 1 to the door body 101, when the door needs to be opened, the first support seat 1 can be rotated to drive the pry bar 3 to rotate, so that the pry bar 3 is in a working state, even if the axis of the pry bar 3 is set horizontally, so as to apply force to the pry bar 3 to open the door, and when the door body 101 is in a closed state or has been opened, the first support seat 1 can be rotated to drive the pry bar 3 to rotate, so that the pry bar 3 is in a storage state, that is, the axis of the pry bar 3 extends vertically, so that the pry bar 3 will not extend out of the door body 101. In addition, due to the gravity of the pry bar 3, when the pry bar 3 is released, the first support seat 1 can be driven to rotate by the gravity of the pry bar 3, so that the pry bar 3 automatically returns to the storage state, which is convenient to use.

[0035] In this embodiment, if Figure 3 As shown, the end of the first support seat 1 away from the door body 101 has a U-shaped groove 11, the two ends of the support member 2 are respectively rotatably connected to the first support seat 1, and the support member 2 passes through the U-shaped groove 11, and the mounting hole 21 is arranged at the position of the support member 2 corresponding to the U-shaped groove 11.

[0036] For example, a groove can be formed at one end of the first support base 1 away from the door body 101 to form a U-shaped notch 11. Of course, two lugs can also be spaced apart at one end of the first support base 1 away from the door body 101 to form a U-shaped notch 11 between the two lugs.

[0037] It can be understood that by setting the U-shaped groove 11, the two opposite side walls of the U-shaped groove 11 can be connected one-to-one with the two ends of the support member 2, which is convenient for the installation of the support member 2. At the same time, the support member 2 passes through the U-shaped groove 11, and the U-shaped groove 11 can form an avoidance for the pry bar 3, thereby preventing the support member 2 from interfering with the rotation of the pry bar 3.

[0038] In this embodiment, if Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the door opening device further comprises a support bar 4 , which is arranged at the support end 32 , and a radial dimension of the support bar 4 in the mounting hole 21 is larger than a diameter of the mounting hole 21 .

[0039] It can be understood that the length of the support stop rod 4 is greater than the diameter of the mounting hole 21. When the pry bar 3 is in a vertical state, the support stop rod 4 can be overlapped on the first support seat 1 to prevent the pry bar 3 from escaping from the mounting hole 21 and causing the pry bar 3 to be easily lost, and the pry bar 3 does not need to be reinserted into the mounting hole 21 when the door is opened next time.

[0040] In this embodiment, the support blocking rod 4 is cylindrical, hemispherical or spherical.

[0041] Specifically, when the support barrier rod 4 is cylindrical, the cylindrical surface of the support barrier rod 4 is in contact with the fulcrum.

[0042] It can be understood that by arranging the support stop rod 4 to form a cylindrical or spherical shape, it is possible to facilitate the rotation of the pry bar 3 around the fulcrum.

[0043] In this embodiment, if Figures 1 to 5 As shown, the door opening device further comprises a second support seat 5, which is suitable for being arranged on the door frame 102, and the second support seat 5 forms a fulcrum.

[0044] By providing the second support seat 5 to form a fulcrum, with the cooperation of the first support seat 1 and the second support seat 5, the pry bar 3 is moved away from the door body 101, thereby increasing the stroke of the door opening force, thereby making the door body 101 open to a larger degree and making it easier to open the door body 101.

[0045] In this embodiment, a groove 51 is provided on the second support seat 5 , and the shape of the groove 51 matches the shape of the support blocking rod 4 , so that the support blocking rod 4 can rotate in the groove 51 .

[0046] Specifically, when the support bar 4 is cylindrical, the groove 51 may be semi-cylindrical, and an avoidance groove is provided on the second support seat 5 corresponding to the pry bar 3, so as to avoid the second support seat 5 from interfering with the rotation of the pry bar 3. When the support bar 4 is spherical or hemispherical, the groove 51 may be a hemispherical groove, so that the support bar 4 is partially engaged in the groove 51, so as to facilitate rotation in the groove 51.

[0047] It is understandable that, by providing the groove 51 on the second support seat 5 , the support blocking rod 4 can be rotated in the groove 51 , thereby limiting the position of the pry bar 3 , which is conducive to better exerting force on the pry bar 3 .

[0048] In this embodiment, the second support base 5 includes a column, one end of which is suitable for connecting with the door frame 102, and the groove 51 is provided at the other end of the column.

[0049] The column can be a cylinder with smooth sides, which can reduce safety hazards.

[0050] For example, the second support seat 5 also includes a second connector, which includes a second connecting shaft and a second plug. The second connecting shaft passes through the door frame 102, and first plugs are provided at both ends of the first connecting shaft to reliably connect the first connector and the door body 101.

[0051] It can be understood that by configuring the second support seat 5 to be columnar, the fulcrum is moved away from the door frame 102, thereby increasing the opening degree of the door body 101 when the door is opened and facilitating processing.

[0052] In this embodiment, Figures 1 to 5 As shown, the damper includes a door body 101 , a door frame 102 and the above-mentioned door opening device, and the first support seat 1 is arranged on the door body 101 .

[0053] Specifically, the second supporting seat 5 is disposed on the door frame 102 .

[0054] It can be understood that, by setting a door opening device on the door body 101 of the damper, the first support seat 1 is set on the door body 101, and the second support seat 5 is set on the door frame 102. The first support seat 1 is driven to drive the pry bar 3 so that the pry bar 3 is in a horizontal position, and a force is applied to the pry bar 3 in a direction away from the door body 101, so that the support end 32 of the pry bar 3 rotates around the second support seat 5, and the door is gradually opened. When the door is opened to a certain degree, the pressure difference on both sides of the door is reduced, and the door body 101 can be opened without a lot of force.

[0055] The damper in this embodiment further includes a handle 103 , which is disposed on the door body 101 .

[0056] It is understandable that by providing the handle 103, after the door body 101 is opened to a certain degree by the opening device, the door body 101 can be opened by using the handle 103, which is more convenient to operate.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying 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 the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0061] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0062] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A door opening device, characterized in that: include: A first support base, wherein the first support base is adapted to be connected to a door body, wherein the door body has a first side edge and a second side edge opposite to each other, and the first side edge is hinged to the door frame; A support member, the support member is rotatably disposed on the first support seat, and the support member has a mounting hole; A pry bar, wherein the pry bar passes through the mounting hole, and has an operating end and a supporting end in the axial direction of the pry bar. The pry bar is movable relative to the mounting hole so that the supporting end abuts against the door frame. The operating end is pulled and the supporting end rotates around a fulcrum on the door frame to open the door body. The fulcrum is located on a side of the door frame adjacent to the second side edge.

2. The door opening device according to claim 1, characterized in that: The pry bar has a working state and a storage state. In the working state, the operating end and the supporting end are distributed in a horizontal direction. In the storage state, the operating end and the supporting end are distributed in a vertical direction.

3. The door opening device according to claim 2, characterized in that: The first support seat is rotatably connected to the door body so that the pry bar can be switched between the working state and the storage state.

4. The door opening device according to claim 3, characterized in that: The first support seat has a U-shaped slot at one end away from the door body, the two ends of the support member are respectively rotatably connected to the first support seat, and the support member passes through the U-shaped slot, and the mounting hole is arranged at the position of the support member corresponding to the U-shaped slot.

5. The door opening device according to claim 1, characterized in that: It also includes a support blocking rod, which is arranged at the support end, and the radial size of the support blocking rod in the mounting hole is larger than the diameter of the mounting hole.

6. The door opening device according to claim 5, characterized in that: The support blocking rod is cylindrical, hemispherical or spherical.

7. The door opening device according to claim 6, characterized in that: It also includes a second support base, which is suitable for being arranged on the door frame, and the second support base forms the fulcrum.

8. The door opening device according to claim 7, characterized in that: The second support seat is provided with a groove, and the shape of the groove matches the shape of the support blocking rod, so that the support blocking rod can rotate in the groove.

9. A damper, characterized in that: The invention comprises a door body, a door frame and an opening device for a door according to any one of claims 1 to 8, wherein the first supporting seat is arranged on the door body.

10. The damper according to claim 9, characterized in that: It also includes a handle, which is arranged on the door body.

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