Rail device for a wood heat treatment kiln
By setting up lifting bridges and bridging tracks outside the wood heat treatment kiln, and using push rods to drive the support crank to tilt to achieve docking and separation of the bridging tracks, the problems of complex structure, large space occupation and high cost of existing devices are solved, and low-cost and safe rail transportation is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KAIYUAN SHENGYIDA WOOD DRYING EQUIP CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-07-21
AI Technical Summary
The existing track devices for wood heat treatment kilns have problems such as complex structure, large space occupation, high cost and safety hazards.
The system employs a lifting bridge frame located outside the kiln body, with bridging rails on the lifting bridge frame. The bridging rails are connected and separated by tilting the support handle driven by a push rod. The push rod does not bear the weight of the kiln car. The use of an electric push rod, limit plate, and locking pin structure improves safety and reliability.
The track device features a simple structure, small footprint, low cost, ease of use, and high safety, reducing equipment manufacturing and operating costs and eliminating the need for a hydraulic pump station.
Smart Images
Figure CN224527504U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a track device, and more particularly to a track device used for kiln cars entering and exiting a wood heat treatment kiln. Background Technology
[0002] During the loading and unloading process of a wood heat treatment kiln, the kiln car needs to travel back and forth between the external track outside the kiln body and the internal track inside the kiln body. To ensure the kiln door can open and close properly, the external track cannot be directly connected to the internal track. A trackless area needs to be left between the external and internal tracks for the kiln door. When the kiln car enters or exits the kiln, a temporary bridge needs to be constructed between the external and internal tracks, and bridging tracks connecting the external and internal tracks are laid on the bridge. To enable the bridging tracks to quickly connect with the external and internal tracks, two methods are typically used: one is to hinge the bridge to the end of the external track, and when opening and closing the kiln door, the bridge is flipped upwards above the external track, creating a trackless area between the external and internal tracks; the other is to lower the bridge to a horizontal position when the kiln car enters or exits the kiln body, allowing the two ends of the bridging tracks on the bridge to connect with the external and internal tracks respectively. Another method involves installing a vertical lifting bridge between the external and internal kiln tracks. Bridging tracks are laid on the vertical lifting bridge, and multiple hydraulic cylinders installed perpendicular to the horizontal plane operate synchronously to raise and lower the bridge. When opening and closing the kiln door, the bridge is lowered vertically, creating a trackless area between the external and internal tracks. When the kiln car enters or exits the kiln, the bridge is raised vertically, connecting the bridging tracks at both ends to the external and internal tracks respectively. When using an upward-tilting bridge, a lifting gantry is required outside the kiln to ensure smooth upward movement of the bridge and bridging tracks. This not only occupies a large space but also involves a long and time-consuming upward and downward movement of the bridge, posing safety hazards for personnel working under the upward-tilting bridge. While vertical lifting bridges can overcome the aforementioned drawbacks of top-loading bridges, the weight of the kiln car needs to be supported by hydraulic cylinders when it passes over the bridging track. Therefore, multiple high-load hydraulic cylinders are required to meet the load-bearing requirements. In addition, a dedicated hydraulic pump station is also required for the hydraulic cylinders, resulting in higher equipment manufacturing and operating costs. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a track device for a wood heat treatment kiln, which has a simple structure, is easy to use, occupies little space, and has low production and use costs.
[0004] The technical solution adopted to solve the technical problem is as follows: A track device for a wood heat treatment kiln, comprising an internal kiln track installed inside the kiln body along the kiln body's orientation and an external kiln track installed outside the kiln body, coinciding with the extension line of the internal kiln track. The kiln door side end face and the kiln opening end face of the internal kiln track are located on the same plane. A lifting bridge is also provided outside the kiln body, and bridging tracks that can connect with the internal and external kiln tracks are provided on the lifting bridge. The lifting bridge includes two longitudinal beams supporting the bridging tracks, and multiple identical specifications are provided below the longitudinal beams along the length of the longitudinal beams. The parallelogram mechanism includes a horizontal beam at each end, which is fixedly connected to two longitudinal beams at both ends. A support handle is hinged to each end of the horizontal beam, and the lower end of the support handle is hinged to a handle base on the ground. The lifting bridge also includes a push rod that drives the support handle to stand upright or tilt to one side. The tail end of the push rod is hinged to a push rod base on the ground, and the top end of the push rod is hinged to the middle of one or more support handles. When the support handle is perpendicular to the horizontal plane, the bridging track reaches its maximum height and connects with the kiln inner track and the kiln outer track.
[0005] As a further improvement of this utility model: the push rod is an electric push rod.
[0006] As a further improvement of this utility model: the kiln external track is installed on the kiln external track frame, and a limiting plate is provided at the position of the longitudinal beam corresponding to the kiln external track frame to cooperate with the longitudinal beam and prevent the support handle from deflecting in the opposite direction.
[0007] As a further improvement of this utility model: a docking locking pin is provided on the outer track frame of the kiln, and a locking pin insertion tube that cooperates with the docking locking pin is provided on the lifting bridge frame.
[0008] As a further improvement of this utility model: the push rod base includes a column, a horizontal screw is provided on the column, and a hinge seat that cooperates with the tail end of the push rod is provided at the end of the horizontal screw. The horizontal screw is fastened in the screw mounting hole of the column by two nuts.
[0009] Beneficial Effects: The track device of the wood heat treatment kiln of this utility model adopts a lifting bridge frame outside the kiln body. The lifting bridge frame has bridging tracks that can connect with both the internal and external tracks of the kiln. The lifting bridge frame includes two longitudinal beams supporting the bridging tracks. Below the longitudinal beams, along the length of the longitudinal beams, there are multiple parallelogram mechanisms of the same specifications. Each parallelogram mechanism includes a transverse beam. The two ends of the transverse beam are fixedly connected to the longitudinal beams. A support handle is hinged to each end of the transverse beam. The lower end of the support handle is hinged to a handle base on the ground. The lifting bridge frame also includes a push rod that drives the support handles to tilt to one side. The tail end of the push rod is hinged to a push rod base on the ground. The top end of the push rod is hinged to the middle of one or more support handles. When the support handle is in contact with water... The technical solution for bridging tracks reaching maximum height when the plane is vertical, and connecting with the internal and external tracks of the kiln, allows for easy opening and closing of the kiln door. Simply activating the push rod drives the support crank to tilt to one side, causing the lifting bridge and bridging tracks to shift laterally and lower in height. When a kiln car passes, the push rod simply reverses its movement. Since the weight of the kiln car is borne by the support crank after the bridging tracks connect with the internal and external tracks, and the push rod's role is only to prevent the support crank from tilting (it does not bear the weight of the kiln car), only one push rod is needed. Furthermore, the diameter of the push rod is smaller than the load-bearing push rod of the vertical lifting bridge, resulting in lower manufacturing and operating costs. This utility model's track device for wood heat treatment kilns has advantages such as simple structure, ease of use, and small space occupation. Because the push rod is an electric push rod, a hydraulic pump station is unnecessary, further reducing manufacturing and operating costs. Because the external kiln track is mounted on the external kiln track frame, and a limiting plate is provided at the corresponding longitudinal beam position on the external kiln track frame to cooperate with the longitudinal beam and prevent the support handle from deflecting in the opposite direction, the excessive movement of the push rod can effectively prevent the support handle from tilting in the opposite direction, making the equipment operation more reliable. The addition of a docking locking pin on the external kiln track frame and a locking pin insertion tube on the lifting bridge frame to cooperate with the docking locking pin can effectively prevent the bridge track from becoming unstable under load, further improving the safety of the equipment. Furthermore, the push rod base includes a column with a horizontal screw rod on it. At the end of the horizontal screw rod is a hinge seat that cooperates with the tail end of the push rod. The horizontal screw rod is fastened to the screw rod mounting hole in the column by two nuts, resulting in a more reasonable force direction on the support handle and better control of the support handle by the push rod. Attached Figure Description
[0010] The track device of the wood heat treatment kiln of this utility model will be further described in detail below with reference to the accompanying drawings.
[0011] Figure 1 This is a schematic diagram of the overall structure of the track device of the wood heat treatment kiln of this utility model. Figure 2 This is an exploded view of the lifting bridge section in the track device of the wood heat treatment kiln of this utility model. Figure 3 This is a three-dimensional structural diagram of the lifting bridge section in the track device of the wood heat treatment kiln of this utility model when the bridging track is connected with the track inside the kiln and the track outside the kiln. Figure 4 This is a cross-sectional view of the lifting bridge section in the track device of the wood heat treatment kiln of this utility model when the bridging track is not connected to the internal track and the external track of the kiln. Figure 5 This is a partial enlarged view of the limiting plate and docking locking pin in the track device of the wood heat treatment kiln of this utility model. Detailed Implementation
[0012] like Figure 1 As shown, the track device of the wood heat treatment kiln of this utility model includes an inner track 3 set inside the kiln body along the direction of the kiln body 4 and an outer track 1 set outside the kiln body, which coincides with the extension line of the inner track. The side end face of the kiln door 5 of the inner track is on the same plane as the end face of the kiln opening. A lifting bridge 8 is also provided outside the kiln body, and a bridging track 2 is provided on the lifting bridge, which can be connected to the inner track and the outer track at both ends respectively.
[0013] like Figure 2 As shown, the lifting bridge includes two longitudinal beams 81 that support two bridging tracks respectively. Below the longitudinal beams, along the length of the longitudinal beams, there are multiple parallelogram mechanisms of the same specifications. The multiple parallelogram mechanisms are arranged in parallel at equal intervals along the length of the longitudinal beams. Each parallelogram mechanism includes a transverse beam 82. The two ends of the transverse beam are fixedly connected to the two longitudinal beams respectively. At each end of the transverse beam, a support handle 83 is hinged. The lower end of the support handle is hinged to the handle base 84 on the ground. The lifting bridge also includes a push rod 85 that drives the support handle to tilt to one side. The tail end of the push rod is hinged to the push rod base 86 on the ground. The top end of the push rod is hinged to the middle of one or more support handles. When the support handle is perpendicular to the horizontal plane, the bridging track reaches its maximum height and connects with the kiln track and the kiln track. Figure 2 In this embodiment, a connecting rod is provided between the two supporting rocker handles, and the top end of the push rod is hinged to the connecting rod 87, thereby achieving the effect of simultaneously hinged to both supporting rocker handles.
[0014] Preferably, the actuator is an electric actuator. Using an electric actuator not only reduces the manufacturing and operating costs of the equipment, but also makes control more convenient.
[0015] Preferably, the push rod base includes a column 861, on which a horizontal screw 862 is provided. At the end of the horizontal screw, a hinge seat is provided that cooperates with the tail end of the push rod. The horizontal screw is fastened in the screw mounting hole of the column by two nuts. During use, the position of the push rod can be finely adjusted by the two nuts so that when the push rod is fully retracted, the support handle is exactly in a state perpendicular to the horizontal plane.
[0016] like Figure 5 As shown, the kiln external track is installed on the kiln external track frame 7. A limiting plate 11 is provided at the position of the longitudinal beam corresponding to the kiln external track frame to cooperate with the longitudinal beam and prevent the support handle from deflecting in the opposite direction. A docking locking pin 9 is also provided on the kiln external track frame, and a locking pin insertion tube 10 that cooperates with the docking locking pin is provided on the lifting bridge frame.
[0017] like Figure 3 As shown, when kiln car 6 enters or exits the kiln body, the push rod retracts, pulling the support handle to a position perpendicular to the horizontal plane. Since the transverse beam of each parallelogram mechanism is fixedly connected to the longitudinal beam, all parallelogram mechanisms can move synchronously under the pulling force of the push rod. All support handles are in a state perpendicular to the horizontal plane, providing support for the longitudinal beam, bridging track, and kiln car. At this time, as... Figure 5 As shown, the limiting plate and the docking locking pin can work together with the push rod to restrict the support handle, preventing the support handle from tilting and losing stable support for the kiln car when subjected to kiln car pressure.
[0018] like Figure 4 As shown, when the transportation operation is completed and the kiln door needs to be opened or closed, pull out the docking lock pin, start the push rod, extend the push rod, apply a lateral thrust to the support rocker, cause the support rocker to tilt to the side, drive the longitudinal beam and the bridging rail to move laterally and descend downwards until the rail surface of the bridging rail is lower than the lower edge of the kiln door, so that the kiln door can be opened or closed smoothly.
[0019] In the track device of the wood heat treatment kiln of this utility model, since the push rod is only responsible for supporting the state control of the crank handle and does not directly bear the weight of the kiln car, the load-bearing requirements of the push rod are reduced compared to the vertical lifting bridge that needs to bear the weight of the kiln car. Only one push rod is needed to realize the lifting control of the bridge and meet the requirements for the passage of the kiln car.
Claims
1. A track device for a wood heat treatment kiln, comprising an internal kiln track disposed inside the kiln body along the kiln body direction and an external kiln track disposed outside the kiln body, coinciding with the extension line of the internal kiln track, wherein the kiln door side end face and the kiln opening end face of the internal kiln track are located on the same plane, characterized in that: A lifting bridge is also provided outside the kiln body. The lifting bridge is equipped with bridging tracks that can connect with the internal and external tracks of the kiln. The lifting bridge includes two longitudinal beams that support the bridging tracks. Below the longitudinal beams, along the length of the longitudinal beams, there are multiple parallelogram mechanisms of the same specifications. Each parallelogram mechanism includes a transverse beam. The two ends of the transverse beam are fixedly connected to the two longitudinal beams respectively. A support handle is hinged to each end of the transverse beam. The lower end of the support handle is hinged to the handle base on the ground. The lifting bridge also includes a push rod that drives the support handle to stand upright or tilt to one side. The tail end of the push rod is hinged to the push rod base on the ground. The top end of the push rod is hinged to the middle of one or more support handles. When the support handle is perpendicular to the horizontal plane, the bridging track reaches its maximum height and connects with the internal and external tracks of the kiln.
2. The track device for the wood heat treatment kiln according to claim 1, characterized in that: The push rod is an electric push rod.
3. The track device for a wood heat treatment kiln according to claim 1 or 2, characterized in that: The external kiln track is installed on the external kiln track frame, and a limiting plate is provided at the position of the longitudinal beam corresponding to the external kiln track frame to cooperate with the longitudinal beam and prevent the support handle from deflecting in the opposite direction.
4. The track device for the wood heat treatment kiln according to claim 2, characterized in that: A docking locking pin is also provided on the external track frame of the kiln, and a locking pin insertion tube that cooperates with the docking locking pin is provided on the lifting bridge frame.
5. The track device for the wood heat treatment kiln according to claim 1, characterized in that: The push rod base includes a column with a horizontal screw on it. At the end of the horizontal screw is a hinge seat that mates with the tail end of the push rod. The horizontal screw is fastened to the screw mounting hole of the column by two nuts.