Sealing window opening and closing transmission device and granary sealing window applying same

Abstract

The invention belongs to the technical field of door and window opening and closing executing mechanisms, and discloses a sealing window opening and closing transmission device and a granary sealing window applying the same. The transmission device comprises a rotating mechanism, a linear reciprocating mechanism, a reversing mechanism and a spring bolt control mechanism; the rotating mechanism comprises a mounting box, a first rotating disc and a second rotating disc, the first rotating disc and the second rotating disc rotate relatively through a connecting shaft, the connecting shaft is sleeved with a torsion spring, and two torsion arms of the torsion spring are fixedly connected with the first rotating disc and the second rotating disc respectively; a first stop block is fixedly arranged on the first rotating disc, and a second stop block is fixedly arranged on the second rotating disc; the linear reciprocating mechanism comprises a first connecting rod slidably arranged on the mounting box, one end of the first connecting rod is assembled on the reversing mechanism, the other end of the first connecting rod is movably arranged on the first rotating disc, and the reversing mechanism is in linkage with the spring bolt control mechanism. The granary sealing window comprises a window sash, a window frame and a transmission device. The device is high in adaptation flexibility, low in failure rate, low in manufacturing cost and suitable for controlling opening and closing of the granary sealing window located at the high position.

Description

Technical Field

[0001] This invention relates to the technical field of door and window opening and closing actuators, to a sealing window opening and closing transmission device, and to a grain warehouse sealing window. Background Technology

[0002] Sealed windows in grain silos are crucial for ensuring airtightness, insect and moisture prevention, and precise ventilation and temperature control. Due to the considerable height of grain silos, the sealed windows are installed at a high position, making it impossible for operators to stand directly in front of them. Therefore, an opening and closing mechanism is required to guide the operator to a convenient location. Furthermore, to ensure airtightness, the opening and closing mechanism must not only be linked to the window sash but also incorporate a locking function to enhance sealing.

[0003] However, existing grain silo sealing windows have the following main shortcomings:

[0004] (1) The traditional manual-driven sealing window opening and closing structure is mostly simple and generally does not have a hidden lock mechanism. It relies on the weight of the window sash or simple buckle to close, resulting in insufficient pressure between the window sash and the window frame, poor sealing performance, and difficulty in meeting the strict requirements of modern grain storage for air tightness.

[0005] (2) Most manual and automatic integrated drive sealing windows have no locking function. They only control the closing of the sealing window through the locking of the drive structure, resulting in poor sealing performance. Although push rod electric sealing windows are equipped with electric push rods as drive elements and have locking functions, they have obvious defects: First, the push rod mechanism is usually installed externally, which makes the overall appearance awkward. Moreover, the metal components are exposed to the external environment and are prone to deformation or damage, resulting in poor sealing and reduced heat insulation effect. Second, due to the limitation of push rod stroke and hinge method, the window sash opening angle cannot achieve 180° opening, which is not conducive to air convection when the grain warehouse needs a large amount of ventilation.

[0006] In summary, existing grain warehouse sealed windows have shortcomings in terms of sealing performance, opening and closing angle, structural compactness, and transmission reliability. There is an urgent need for a structure that can link locking and opening / closing of the window, enabling the window to be unlocked before opening and locked after closing, thereby improving airtightness. Summary of the Invention

[0007] Based on the deficiencies in the aforementioned background technology, the purpose of this invention is to provide a sealing window opening and closing transmission device and a grain warehouse sealing window using the same, so as to achieve high adaptability, improved airtightness, and reduced failure rate.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] A sealing window opening and closing transmission device includes a rotating mechanism, a linear reciprocating mechanism, a reversing mechanism, and a latch control mechanism;

[0010] The rotating mechanism includes a mounting box, a first turntable fixedly connected to a power source, and a second turntable fixedly connected to a window sash shaft. Both the first and second turntables are rotatably mounted inside the mounting box and are rotatably mounted relative to each other via a connecting shaft. A torsion spring is sleeved on the connecting shaft, and the two torsion arms of the torsion spring are fixedly connected to the first and second turntables respectively. A first stop block is fixedly mounted on the first turntable, and a second stop block is fixedly mounted on the second turntable.

[0011] The linear reciprocating mechanism includes a first connecting rod slidably mounted on the mounting box. One end of the first connecting rod is mounted on the reversing mechanism, and the other end is movably mounted on the first turntable. It performs linear reciprocating motion as the first turntable rotates. The reversing mechanism is linked with the locking tongue control mechanism.

[0012] When the sealed window is locked, the first and second blocks separate. When unlocked, the first turntable rotates, the first connecting rod moves linearly, and the bolt retracts through the reversing mechanism. When the window is open, the first block moves to the position where it abuts against the second block, and the first and second turntables rotate synchronously into position. When the window is closed, the first and second turntables rotate synchronously in opposite directions under the action of the torsion spring. After the second turntable rotates into position, the first turntable continues to rotate, the first connecting rod moves linearly in the opposite direction, and the bolt extends to lock.

[0013] As a limitation of the present invention, the latch control mechanism includes a second link, and the reversing mechanism includes a first cam and a second cam that rotate coaxially. The first cam is provided with a first guide hole and a second guide hole, and the second cam is provided with a first positioning hole and a second positioning hole. One end of the first link is assembled with the reversing mechanism and is simultaneously slidably disposed in the first guide hole and the first positioning hole through a hinge point. One end of the second link is simultaneously slidably disposed in the second guide hole and the second positioning hole through a hinge point. The position of the hinge point forms a scissor positioning, so that the first link and the second link perform linear reciprocating motion along a vertical path.

[0014] As a further limitation of the present invention, the second turntable is provided with a second slide groove, and the mounting box is fixedly provided with a first positioning pin and a second positioning pin. The first positioning pin and the second positioning pin are slidably disposed in the second slide groove to limit the extreme angle of rotation of the second turntable.

[0015] As another limitation of the present invention, the first turntable is provided with a first slide groove, the first slide groove having a proximal end and a distal end, and the first connecting rod is movably disposed in the first slide groove by a pin. In the locked state, the pin is located at the proximal end of the first slide groove, and in the unlocked state, the pin is located at the distal end of the first slide groove.

[0016] As a limitation of the present invention, the first groove includes a circumferential groove and a radial groove arranged in the radial direction. The circumferential groove and the radial groove are connected. The radial groove is near the center and has a proximal end, while the circumferential groove has a distal end.

[0017] As a further limitation of the present invention, the linear reciprocating mechanism further includes at least two sliders, and the first connecting rod is slidably disposed on the two sliders.

[0018] As a third limitation of the present invention, the power source includes a handwheel assembly and a locking mechanism. The handwheel assembly is fixedly connected to the first turntable. After the window is opened and closed, the locking mechanism positions the handwheel assembly.

[0019] As a fourth limitation of the present invention, the power source includes a geared motor, and the output shaft of the geared motor is fixedly connected to the first turntable.

[0020] The present invention also provides a grain warehouse sealing window, including a window frame and a window sash that can be opened and closed and installed on the window frame, and also includes the above-mentioned sealing window opening and closing transmission device;

[0021] The mounting box is installed below the sealed window. The second turntable is fixedly connected to the shaft that controls the opening and closing of the window sash. The first connecting rod extends out of the mounting box and extends into the window frame. The reversing mechanism and the latch control mechanism are installed inside the window frame.

[0022] By adopting the above-described technical solution, the beneficial effects achieved by this invention compared to the prior art are as follows:

[0023] (1) The present invention achieves the strict timing requirement of "unlocking before opening the window and locking after closing the window" through the synchronous or asynchronous action of the first turntable and the second turntable, and the position change of the first stop and the second stop in different states, etc., by purely mechanical cooperation. Through the structure of the hidden lock plug, it is locked after sealing, which can not only ensure the airtightness, but also make the hidden lock set inside the window frame and not exposed, reducing the deformation caused by wind and rain erosion, improving the service life, and further ensuring the sealing effect and improving the thermal insulation performance.

[0024] (2) The power source of the present invention adopts a modular design. The handwheel assembly and the geared motor can be connected to the first turntable. Users can flexibly select a pure manual or manual-automatic integrated scheme according to the actual power supply conditions, budget and maintenance capabilities of the grain warehouse. The electric and manual modules are independently decoupled in mechanical structure. There is no need to add extra transmission parts to be compatible with the two modes, which greatly reduces the manufacturing cost of unnecessary structures and makes the selection more flexible.

[0025] (3) The present invention utilizes the guide holes and positioning holes with different paths on the two cams to form a mode of one guide and one limit, which makes the first link and the second link more stable during transmission, ensures the vertical transmission path of the two, and makes the operation smoother.

[0026] (4) The second turntable of the present invention is provided with a second sliding groove, which slides and cooperates with the first positioning pin and the second positioning pin to precisely limit the rotation angle of the second turntable, thereby accurately controlling the opening position of the window sash and avoiding over-rotation or under-rotation; at the same time, the first sliding groove adopts an irregular structure with a circumferential groove and a radial groove connected to form an irregular sliding track, which utilizes the cam principle but overcomes the defect of poor flexibility caused by the fixed hinge point connection, and improves the flexibility of operation on the basis of realizing the timing action.

[0027] (5) The present invention has a short transmission path, fewer parts, and simple assembly process, which significantly reduces manufacturing and maintenance costs compared with existing manual-automatic integrated devices, and has good economic benefits and promotion value. Attached Figure Description

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] Figure 1 A schematic diagram of the overall structure of Embodiment 1 of the present invention is shown;

[0030] Figure 2 An exploded view of the rotating mechanism in Embodiment 1 of the present invention is shown;

[0031] Figure 3 A top view of the first turntable in Embodiment 1 of the present invention is shown;

[0032] Figure 4 A schematic diagram of the linear reciprocating mechanism in Embodiment 1 of the present invention is shown;

[0033] Figure 5 A schematic diagram of the assembly structure of the reversing mechanism and the locking tongue control mechanism in Embodiment 1 of the present invention is shown;

[0034] Figure 6 A schematic diagram of the assembly structure of the first cam and the second cam in Embodiment 1 of the present invention is shown;

[0035] Figure 7 A schematic diagram of the initial position structure of the first cam and the second cam in Embodiment 1 of the present invention is shown;

[0036] Figure 8 This diagram shows a structural schematic of Embodiment 1 of the present invention when the power source is a handwheel;

[0037] Figure 9 This diagram shows the positional structure of the first connecting rod on the first slide groove in the initial position of Embodiment 1 of the present invention.

[0038] Figure 10 A schematic diagram of the initial locked state of Embodiment 1 of the present invention is shown;

[0039] Figure 11 This shows a schematic diagram of the position of the first connecting rod on the first slide groove after unlocking according to Embodiment 1 of the present invention;

[0040] Figure 12 A schematic diagram of the unlocked state of Embodiment 1 of the present invention is shown;

[0041] Figure 13 This diagram illustrates the structure of Embodiment 2 of the present invention when the power source is an electric motor.

[0042] Figure 14 A schematic diagram of the structure of Embodiment 3 of the present invention is shown;

[0043] Figure 15 A schematic diagram of the transmission device for controlling the opening and closing of two sealed windows is shown in Embodiment 3 of the present invention.

[0044] In the diagram: 1. Rotating mechanism; 2. Linear reciprocating mechanism; 3. Reversing mechanism; 4. Locking tongue control mechanism; 5. Handwheel assembly; 6. Gear motor; 7. Locking mechanism; 8. Window sash; 9. Window frame;

[0045] 101. Mounting box; 102. First turntable; 103. Second turntable; 104. First fixed shaft; 105. Second fixed shaft; 106. Connecting shaft; 107. Torsion spring; 108. First stop; 109. Second stop; 110. First slide groove; 1101: Circumferential groove; 1102: Radial groove; 111. Second slide groove; 112. First locating pin; 113. Second locating pin;

[0046] 201. First connecting rod; 202. Pin; 203. Slider;

[0047] 301, First cam; 302, Second cam; 303, First guide hole; 304, Second guide hole; 305, First positioning hole; 306, Second positioning hole;

[0048] 401. Second connecting rod; 402. Locking tongue; 403. Third cam;

[0049] 701. Locking plate; 702. Bolt. Detailed Implementation

[0050] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative and understanding purposes only and are not intended to limit the scope of the invention.

[0051] Example 1: A sealing window opening and closing transmission device

[0052] like Figure 1As shown, this embodiment includes a rotating mechanism 1, a linear reciprocating mechanism 2, a reversing mechanism 3, and a latch control mechanism 4. The sequential actions of unlocking, opening the window, closing the window, and locking are achieved through the linkage of the above mechanisms.

[0053] I. Rotating Mechanism 1

[0054] like Figure 2 As shown, the rotating mechanism 1 includes a mounting box 101, a first turntable 102 fixedly connected to a power source, and a second turntable 103 fixedly connected to the rotating shaft of the window sash 8.

[0055] The mounting box 101 is a box-like structure, fixedly installed on the lower wall of the sealed window. A first fixed shaft 104 and a second fixed shaft 105 are rotatably mounted inside the mounting box 101. The first fixed shaft 104 is rotatably mounted on the bottom surface of the mounting box 101 via bearings, with its two ends located inside and outside the mounting box 101, respectively. The second fixed shaft 105 is rotatably mounted on the top surface of the mounting box 101 via bearings, with its two ends located inside and outside the mounting box 101, respectively.

[0056] The first turntable 102 is fixed on the first fixed shaft 104, and the second turntable 103 is fixed on the second fixed shaft 105. Both the first turntable 102 and the second turntable 103 are located inside the mounting box 101. The first turntable 102 and the second turntable 103 are connected to each other by a connecting shaft 106. Specifically, one end of the connecting shaft 106 is fixedly connected to the second turntable 102, and the first fixed shaft 104 has a insertion hole. The other end of the connecting shaft 106 is inserted into the insertion hole of the first fixed shaft 104. A torsion spring 107 is sleeved on the connecting shaft 106. The two torsion arms of the torsion spring 107 are fixedly connected to the first turntable 102 and the second turntable 103 respectively, so that the first turntable 102 and the second turntable 103 can move together under the action of the torsion spring 107. When one turntable is stationary, the other turntable can rotate independently under the action of an external force.

[0057] A first stop 108 is fixedly mounted on the surface of the first turntable 102, and the first stop 108 protrudes axially. A second stop 109 is fixedly mounted on the surface of the second turntable 103, and the second stop 109 also protrudes axially. The first stop 108 and the second stop 109 are separated from each other and do not contact each other when the sealing window is locked (initial state). When the first turntable 102 rotates to a certain angle, the first stop 108 can abut against the second stop 109, so that the first turntable 102 and the second turntable 103 move synchronously.

[0058] like Figure 3As shown, a first slide groove 110 is provided on the first turntable 102. The first slide groove 110 includes a circumferential groove 1101 and a radial groove 1102 that are connected to each other. The radial groove 1102 extends radially along the first turntable 102, and its end near the center of the first turntable 102 is the proximal end; the circumferential groove 1101 is arranged circumferentially along the first turntable 102, and any position within it is the distal end. The circumferential groove 1101 and the radial groove 1102 are connected at their radial outer ends to form a continuous irregularly shaped slide groove. This irregularly shaped slide groove simulates the motion path of a cam, causing the linear reciprocating mechanism 2 to change position.

[0059] The second turntable 103 has an arc-shaped second sliding groove 111, which is concentrically arranged with the second turntable 103. A first positioning pin 112 and a second positioning pin 113 are fixed to the wall of the mounting box 101. Both the first positioning pin 112 and the second positioning pin 113 extend towards the second turntable 103 and are slidably disposed within the second sliding groove 111. These pins limit the extreme angle of rotation of the second turntable 103, thereby precisely controlling the opening and closing angle of the window sash 8. The arc length of the second sliding groove 111 corresponds to the required rotation angle range of the second turntable 103. When the end of the second sliding groove 111 on the second turntable 103 contacts the first positioning pin 112, it is limited, and the window sash 8 is in the closed state. When the end of the second sliding groove 111 on the second turntable 103 contacts the second positioning pin 113, it is limited, and the window sash 8 rotates 180 degrees, entering the open state. The limit angle is the angle at which the second turntable 103 rotates when the two ends of the second slide groove 111 abut against the first positioning pin 112 and the second positioning pin 113 respectively.

[0060] II. Linear Reciprocating Mechanism 2

[0061] like Figure 4 As shown, the linear reciprocating mechanism 2 includes a first connecting rod 201 and a pin 202.

[0062] The first connecting rod 201 is a long rod-shaped component that slides horizontally on the mounting box 101. To improve the smoothness of the sliding of the first connecting rod 201, a slider 203 is provided at the connection point between the first connecting rod 201 and the mounting box 101 and along the transmission path to provide support and guidance for the first connecting rod 201. Specifically, this embodiment directly adopts a linear bearing structure, with the bearing block of the linear bearing being the slider 203 and the linear shaft being the first connecting rod 201. In this embodiment, three bearing blocks are provided on the linear shaft, one of which is fixedly connected to the mounting box 101, and the other two are fixedly connected to the window frame 9. Since the mounting box 101 is located below the window frame 9 and the reversing mechanism 3 is located inside the window frame 9, a height difference will occur when the two ends of the first connecting rod 201 are connected to the rotating mechanism 1 and the reversing mechanism 3. Therefore, in this embodiment, a portion of the first connecting rod 201 is Z-shaped to accommodate this connection.

[0063] Both ends of the first connecting rod 201 are fixed with U-shaped blocks. One end of the U-shaped block is movably mounted within the first groove 110 of the first turntable 102 via a pin 202, and can slide along the groove's shaped trajectory. Specifically, the pin 202 passes through the first groove 110, and both ends are fixed to the inner walls of the U-shaped blocks. The other end of the first connecting rod 201 extends to the outside of the mounting box 101 and connects to the reversing mechanism 3.

[0064] III. Reversing Mechanism 3 and Locking Tongue Control Mechanism 4

[0065] like Figure 5 As shown, the reversing mechanism 3 is used to convert horizontal linear motion into vertical linear motion, and is linked with the latch control mechanism 4. Both are installed inside the window frame 9.

[0066] like Figure 6 As shown, the reversing mechanism 3 includes a first cam 301 and a second cam 302 coaxially fixedly connected, which can rotate synchronously around the same axis. The first cam 301 and the second cam 302 have the same structure, except that they have different elongated holes. The first cam 301 has a first guide hole 303 and a second guide hole 304, and the second cam 302 has a corresponding first positioning hole 305 and a second positioning hole 306. During transmission, a portion of the holes in the first positioning hole 305 and the first guide hole 303 always overlaps, and a portion of the holes in the second positioning hole 306 and the second guide hole 304 always overlaps during transmission. Figure 7 As shown, in the initial locked state, the first cam 301 and the second cam 302 overlap.

[0067] The latch control mechanism 4 includes a second link 401, a latch 402, and a third cam 403. The latch 402 is slidably mounted on the side of the window frame 9, and the second link 401 is slidably connected to the vertical side of the window frame 9. In this embodiment, the third cam 403 is a swing cam, which is hinged inside the window frame 9. One end of the latch 402 is hinged to the third cam 403, and the other end of the second link 401 is hinged to the third cam 403, which can convert the linear motion of the second link 401 into the extension and retraction of the latch 402. This part of the structure has been disclosed in patent publication number CN121429254A and will not be described in detail here.

[0068] The first connecting rod 201 extends to a U-shaped block at one end of the window frame 9, where a hinge shaft is provided. This hinge shaft is simultaneously slidably disposed in the hole where the first guide hole 303 and the first positioning hole 305 overlap. The first guide hole 303 and the first positioning hole 305 form a scissor-like positioning on all four sides of the hinge shaft, so that while the hinge shaft is making horizontal linear movement, it can only fit against the inner wall of the overlapping part of the first guide hole 303 and the first positioning hole 305. Its movement trajectory is constrained by the two holes.

[0069] Similarly, one end of the second connecting rod 401 is equipped with a hinge shaft, which is slidably disposed within the overlapping portion of the second guide hole 304 and the second positioning hole 306. The second guide hole 304 and the second positioning hole 306 form a scissor-like positioning on all four sides of the hinge shaft, ensuring that while the hinge shaft is making vertical linear motion, it can only contact the inner wall of the overlapping portion of the second guide hole 304 and the second positioning hole 306. The two holes jointly constrain its motion trajectory. The combined action of the four holes ensures that the angle of linear motion does not deviate, improving the smoothness of transmission.

[0070] IV. Power Source and Locking Mechanism 7

[0071] like Figure 8 As shown, the power source includes a handwheel assembly 5, which is limited by a locking mechanism 7. The handwheel assembly 5 adopts existing technology and includes a handwheel and a drive shaft. The drive shaft is fixedly connected to a first fixed shaft 104 on the first turntable 102. The length of the first fixed shaft 104 can be extended as needed to position the handwheel at a height accessible to the operator.

[0072] The locking mechanism 7 includes a locking plate 701 and a bolt 702, which restricts the rotation of the handwheel. The locking plate 701 is a plate-like structure, fixed to the wall, and located above the handwheel. When the window sash 8 is opened to the correct position, corresponding insertion holes are provided on the handwheel and the locking plate 701. After the insertion hole on the handwheel is rotated to the corresponding position on the locking plate 701, the bolt 702 is inserted into the insertion hole to lock the handwheel, indirectly locking the first turntable 102. Since the first turntable 102 is locked, the first stop 108 and the second stop 109 abut against each other, locking the second turntable 103, thereby locking the window sash 8 and preventing external disturbance. When the window sash 8 is closed, the corresponding insertion holes on the handwheel and the locking plate 701 are used to insert the bolt 702 into the insertion hole to prevent the window sash 8 from being opened abnormally due to accidental rotation of the handwheel.

[0073] V. Work Process

[0074] (1) Initial locked state

[0075] like Figure 9 As shown, the pin 202 of the first connecting rod 201 is located near the center end of the radial groove 1102 of the first slide groove 110. The first connecting rod 201 is in the retracted position, and the first stop block 108 and the second stop block 109 are in a separated state. In the reversing mechanism 3, the hinge point of the first connecting rod 201 is located at the starting end of the first guide hole 303 and the first positioning hole 305, and the hinge point of the second connecting rod 401 and the third cam 403 is located in a lower position, such as... Figure 10 As shown, the latch 402 extends out of the window frame 9, and the window sash 8 is locked.

[0076] (2) Unlocking process

[0077] The power source drives the first turntable 102 to rotate in the forward direction. Initially, as the second stop 109 has not yet contacted the first stop 108, the second turntable 103 remains stationary with the window sash 8 locked. (The last sentence appears to be incomplete and possibly refers to a different context.) Figure 11 As shown, when the first turntable 102 rotates, the pin 202 slides outward from the proximal end of the radial groove 1102, enters the circumferential groove 1101, and moves towards the distal end, driving the first connecting rod 201 to extend outward. Figure 12 As shown, the first link 201 pushes the first cam 301 and the second cam 302 to rotate, which in turn drives the second link 401 to move upward. The second link 401 drives the latch 402 to retract into the window frame 9 through the third cam 403. At this time, the window sash 8 is still in the closed state, completing the "unlock first" process.

[0078] (3) Window opening process

[0079] The first turntable 102 continues to rotate. When the first stop 108 moves to the position where it abuts against the second stop 109, the first turntable 102 begins to drive the second turntable 103 to rotate synchronously. The second turntable 103 drives the window sash 8 to rotate via the second fixed shaft 105, and the window sash 8 gradually opens. During this process, the pin 202 slides in the circumferential groove 1101, the first connecting rod 201 remains in the extended position, and the locking tongue 402 remains in the retracted state. When the second turntable 103 rotates until one end of the second slide groove 111 contacts the first positioning pin 112, the window sash 8 is fully opened, stops rotating, and is locked in place by the handwheel via the latch 701.

[0080] (4) The process of closing the window

[0081] Pull out the latch 701, and the power source drives the first turntable 102 to rotate in the opposite direction. The second turntable 103 rotates in the opposite direction under the torque of the torsion spring 107, and the window sash 8 gradually closes. When the window sash 8 is closed in place, the second turntable 103 stops rotating and presses the window frame 9 under the torque of the torsion spring 107, keeping it stationary.

[0082] (5) Locking process

[0083] After the second turntable 103 stops rotating, the first turntable 102 continues to rotate in the opposite direction under the action of the power source. The pin 202 on the first connecting rod 201 returns from the distal end of the circumferential groove 1101 along the hole to the proximal end of the radial groove 1102, driving the first connecting rod 201 to retract inward. The first connecting rod 201 pulls the reversing mechanism 3 to rotate in the opposite direction, causing the second connecting rod 401 to move downward. The second connecting rod 401 drives the locking tongue 402 to extend out of the window frame 9 again through the third cam 403 and insert into the corresponding lock hole of the window frame 9, locking the window sash 8. This completes the full sequence of "rear locking".

[0084] Example 2: A sealing window opening and closing transmission device

[0085] like Figure 13 As shown, this embodiment has a structure that is basically the same as that of embodiment 1, except that the power source in this embodiment is a geared motor 6. The output shaft of the geared motor 6 is fixedly connected to the first fixed shaft 104 of the first turntable 102. Since the geared motor 6 has a built-in locking function for starting and stopping, there is no need to set up an additional locking mechanism.

[0086] Example 3: A grain warehouse sealing window

[0087] like Figure 14 As shown, the grain warehouse sealing window includes a window frame 6 and a window sash 5 that is openable and closable and installed on the window frame 6, and also includes a sealing window opening and closing transmission device as described in Embodiment 1.

[0088] Mounting box 101 is fixedly installed on the wall below the sealed window or at the bottom of the window frame 9. The second turntable 103 is fixedly connected to the pivot controlling the opening and closing of the window sash 8 via the second fixed shaft 105. The first connecting rod 201 extends from one side of the mounting box 101 and into the interior of the window frame 9. The reversing mechanism 3 (first cam 301, second cam 302) and the latch control mechanism 4 (second connecting rod 401, third cam 403, latch 402) are all installed within the inner frame of the window frame 9, resulting in a compact, non-exposed structure that is dustproof and insect-proof. Figure 15 As shown, in use, the second connecting rod 401 can be extended to control two or more locking tongues 402 to move in tandem, thereby controlling the window sash 8 to open and close simultaneously.

[0089] The sealed window of this grain silo can be equipped with either a manual drive module or an electric drive module according to user needs. If a manual drive module is selected, a handwheel control box can be installed at the operating height on the grain silo floor. The first fixed shaft 104 on the first turntable 102 is extended and fixedly connected to the handwheel shaft, forming a purely manual structure. This mode has lower purchase and operating costs. If an electric drive module is selected, the first fixed shaft 104 on the first turntable 102 can be extended and fixedly connected to the output shaft of the geared motor 6 via a coupling, forming a manual / automatic integrated structure. Under normal circumstances, the geared motor 6 is activated to open and close the window. In the event of an unexpected power outage, the crank handle is inserted into the manual crank socket of the geared motor 6 to manually drive the output shaft of the geared motor 6 to rotate, thus opening and closing the window.

[0090] It should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sealing window opening and closing transmission device, characterized in that: It includes a rotating mechanism, a linear reciprocating mechanism, a reversing mechanism, and a locking tongue control mechanism; The rotating mechanism includes a mounting box, a first turntable fixedly connected to a power source, and a second turntable fixedly connected to a window sash shaft. Both the first and second turntables are rotatably mounted inside the mounting box and are rotatably mounted relative to each other via a connecting shaft. A torsion spring is sleeved on the connecting shaft, and the two torsion arms of the torsion spring are fixedly connected to the first and second turntables respectively. A first stop block is fixedly mounted on the first turntable, and a second stop block is fixedly mounted on the second turntable. The linear reciprocating mechanism includes a first connecting rod slidably mounted on the mounting box. One end of the first connecting rod is mounted on the reversing mechanism, and the other end is movably mounted on the first turntable. It performs linear reciprocating motion as the first turntable rotates. The reversing mechanism is linked with the locking tongue control mechanism. When the sealed window is locked, the first and second blocks separate. When unlocked, the first turntable rotates, the first connecting rod moves linearly, and the bolt retracts through the reversing mechanism. When the window is open, the first block moves to the position where it abuts against the second block, and the first and second turntables rotate synchronously into position. When the window is closed, the first and second turntables rotate synchronously in opposite directions under the action of the torsion spring. After the second turntable rotates into position, the first turntable continues to rotate, the first connecting rod moves linearly in the opposite direction, and the bolt extends to lock.

2. The sealing window opening and closing transmission device according to claim 1, characterized in that: The latch control mechanism includes a second link, and the reversing mechanism includes a first cam and a second cam that rotate coaxially. The first cam has a first guide hole and a second guide hole, and the second cam has a first positioning hole and a second positioning hole. One end of the first link is assembled with the reversing mechanism and is simultaneously slidably disposed in the first guide hole and the first positioning hole through a hinge point. One end of the second link is simultaneously slidably disposed in the second guide hole and the second positioning hole through a hinge point. The position of the hinge point forms a scissor positioning, so that the first link and the second link make linear reciprocating motion along a vertical path.

3. The sealing window opening and closing transmission device according to claim 2, characterized in that: The second turntable is provided with a second slide groove, and the mounting box is fixed with a first positioning pin and a second positioning pin. The first positioning pin and the second positioning pin are slidably disposed in the second slide groove to limit the extreme angle of rotation of the second turntable.

4. A sealing window opening and closing transmission device according to any one of claims 1-3, characterized in that: The first turntable is provided with a first slide groove, which has a proximal end and a distal end. The first connecting rod is movably set in the first slide groove by a pin. In the locked state, the pin is located at the proximal end of the first slide groove, and in the unlocked state, the pin is located at the distal end of the first slide groove.

5. The sealing window opening and closing transmission device according to claim 4, characterized in that: The first groove includes a circumferential groove and a radial groove. The circumferential groove and the radial groove are connected. The radial groove is near the center and has a proximal end, while the circumferential groove has a distal end.

6. The sealing window opening and closing transmission device according to claim 5, characterized in that: The linear reciprocating mechanism also includes at least two sliders, with the first connecting rod slidably mounted on the two sliders.

7. A sealing window opening and closing transmission device according to any one of claims 1-3, 5, and 6, characterized in that: The power source includes a handwheel assembly and a locking mechanism. The handwheel assembly is fixedly connected to the first turntable. After the window is opened or closed, the locking mechanism positions the handwheel assembly.

8. A sealing window opening and closing transmission device according to any one of claims 1-3, 5, and 6, characterized in that: The power source includes a geared motor, and the output shaft of the geared motor is fixedly connected to the first turntable.

9. A sealed window for a grain warehouse, comprising a window frame and a window sash that is openable and closable and mounted on the window frame, characterized in that: It also includes a sealing window opening and closing transmission device as described in any one of claims 1-8; The mounting box is installed below the sealed window. The second turntable is fixedly connected to the shaft that controls the opening and closing of the window sash. The first connecting rod extends out of the mounting box and extends into the window frame. The reversing mechanism and the latch control mechanism are installed inside the window frame.

Images