Adjusting device for the door of a multi-purpose stove

Abstract

The utility model provides a kind of adjusting device for multi-purpose furnace door, belong to heat treatment equipment field, including anchor chain, the end of the anchor chain is connected with the hoisting buckle of furnace door by guide pulley group, including the traction mechanism sliding in the side end of furnace body, the traction mechanism includes the adjusting rod of another end of anchor chain that can be pulled, driving device moves the traction mechanism, for control the opening and closing state of the furnace door;The adjusting rod is telescopic on the adjusting plate of the traction mechanism, for adjusting the initial position when the furnace door is closed.The utility model has the beneficial effect that the initial position after the furnace door is closed can be adjusted while controlling the opening and closing state of the furnace door, prevent because push-pull door to press down track, cause push-pull hook to be unable to extend into.

Description

Technical Field

[0001] This utility model belongs to the field of heat treatment equipment, and in particular relates to an adjustment device for the furnace door of a multi-purpose furnace. Background Technology

[0002] The multi-purpose furnace is equipped with a flip-up sliding door. When the furnace door is closed and the workpiece is being heat-treated, an external sliding hook can be inserted through the sliding door to move the tooling between the rear chamber and the front chamber inside the furnace.

[0003] The existing multi-purpose furnace door is prone to deformation of the anchor chain due to the high temperature flame generated during heat treatment. Or, after long-term use, the anchor chain may also deform due to wear, eventually leading to an increase in the length of the anchor chain. When the anchor chain becomes longer, the initial closing position of the furnace door will also decrease, and the sliding door will be pressed down onto the track inside the furnace body, making it impossible for the sliding hook to push the sliding door, resulting in the inability of the sliding fixture to operate normally. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an adjustment device for the furnace door of a multi-purpose furnace. This device can adjust the initial position of the furnace door after it is closed while controlling the opening and closing state of the furnace door, so as to prevent the push-pull hook from being unable to extend due to the push-pull door pressing down on the track.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: it includes an anchor chain, the end of which is connected to the lifting buckle of the furnace door via a guide wheel assembly, and includes a traction mechanism that slides on the side of the furnace body. The traction mechanism includes an adjusting rod that can pull the other end of the anchor chain, and a driving device drives the traction mechanism to move, thereby controlling the opening and closing state of the furnace door.

[0006] The adjusting rod is extendable and retractable on the adjusting plate of the traction mechanism, and is used to adjust the initial position of the furnace door when it is closed.

[0007] Furthermore, the traction mechanism includes a limiting frame and a rotatable rotating seat provided on the adjusting plate. The lower end of the adjusting rod is threaded into the rotating seat, and its upper end is engaged with the limiting frame through a limiting block.

[0008] Furthermore, it includes a detection device for detecting whether the position of the sliding door when the furnace door is closed is pressed against the track.

[0009] Furthermore, two detection devices are provided, located at the upper and lower limits allowed by the sliding door when the furnace door is closed.

[0010] Furthermore, the traction mechanism includes a connecting seat disposed at the lower end of the adjusting plate, and the lower end of the rotating seat is rotatably connected to the cavity of the connecting seat.

[0011] Furthermore, the driving device cooperates with the connecting seat, and the rotating seat is driven to rotate by a set of meshing gears.

[0012] Furthermore, the gear set includes a main drive wheel rotatable on the adjusting plate and a driven drive wheel meshing with it, with the upper end of the rotating seat embedded in the center of the driven drive wheel.

[0013] Furthermore, a guide rail is provided on the side end of the furnace body, and the adjusting plate is mounted on the slider of the guide rail.

[0014] Furthermore, the guide wheel assembly includes a first guide wheel assembly disposed at the upper end of the furnace body and a second guide wheel assembly disposed at the side end of the furnace body.

[0015] Furthermore, the detection device employs a photoelectric switch.

[0016] The advantages and positive effects of this utility model are:

[0017] 1. Due to the adoption of the above technical solution, the traction mechanism provides a connection point for the end of the anchor chain. The cylinder can change the position of the end of the anchor chain to lift the anchor chain and thus control the opening and closing state of the furnace door.

[0018] The adjusting rod at the end of the anchor chain can be raised and lowered again to adjust the initial position of the furnace door after it is closed, thus preventing the furnace door from sinking due to anchor chain deformation.

[0019] 2. The detection device, namely the photoelectric switch, uses infrared light to position the entire furnace door and calculate the position of the sliding door to ensure that the sliding door will not press against the track due to its low position after the furnace door is closed.

[0020] 3. The cylinder and photoelectric switch can be linked with an external PLC control system for easy automated operation. The PLC control system can record the number of times the adjusting rod moves. When the number of times the adjusting rod is adjusted reaches the preset number, a maintenance alarm can be issued to facilitate the inspection and replacement of the anchor chain by maintenance personnel. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of part A of this utility model;

[0023] Figure 3 This is a cross-sectional view of the traction mechanism of this utility model.

[0024] In the picture:

[0025] 1. Furnace door; 11. Sliding door;

[0026] 2. First guide wheel assembly; 3. Second guide wheel assembly; 4. Guide rail; 5. Cylinder;

[0027] 6. Adjustment plate;

[0028] 7. Main drive wheel; 71. Motor; 72. Slave drive wheel;

[0029] 8. Adjusting rod; 81. Connecting seat; 82. Rotating seat;

[0030] 9. Limiting frame; 91. Limiting block;

[0031] 10. Detection device. Detailed Implementation

[0032] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0033] like Figures 1 to 3 As shown, this embodiment provides an adjustment device for a multi-purpose furnace door, including an anchor chain, the end of which is connected to a lifting buckle on the furnace door 1 via a guide wheel assembly;

[0034] It also includes a traction mechanism that slides on the side of the furnace body. The traction mechanism includes an adjusting rod 8 that can pull the other end of the anchor chain. The traction mechanism is moved by a drive device to pull the anchor chain to control the opening and closing state of the furnace door 1.

[0035] The adjusting rod 8 can be extended and retracted on the adjusting plate 6 of the traction mechanism to adjust the initial position of the furnace door 1 when it is closed, so as to prevent the sliding door 11 from pressing down on the track.

[0036] The traction mechanism also includes a limiting frame 9 and a rotating seat 82 provided on the adjusting plate 6. The limiting frame 9 is located at the upper end of the adjusting plate 6 and is used to limit the movement path of the adjusting rod 8. A connecting seat 81 is provided at the lower end of the adjusting plate 6. The rotating seat 82 is convex in shape and its lower end can rotate in the cavity of the connecting seat 81. That is, a groove is provided on the connecting seat 81 to accommodate the bottom of the connecting seat 81. The lower end of the connecting seat 81 is set in the groove through a bearing so that the connecting seat 81 can rotate.

[0037] The lower end of the adjusting rod 8 is threaded into the rotating seat 82, and its upper end is fitted into the limiting frame 9 via a limiting block 91. The width of the limiting block 91 matches the inner width of the limiting frame 9. By rotating the rotating seat 82, the adjusting rod 8 can be raised and lowered vertically, thereby pulling the anchor chain and changing its initial position. In this embodiment, the end of the anchor chain is connected to the limiting block 91.

[0038] The rotating seat 82 is driven to rotate by a meshing gear set. The gear set includes a rotatable main drive wheel 7 and a meshing driven wheel 72. The main drive wheel 7 is driven by a motor 71 located at the lower end of the adjusting plate 6. That is, the output end of the motor 71 is connected to the center of the main drive wheel 7. The upper end of the rotating seat 82 passes through the adjusting plate 6 and is embedded in the center of the driven wheel 72. Thus, the rotating seat 82 is driven to rotate through the transmission of the gear set. In this embodiment, the driving device is a cylinder 5. The push rod of the cylinder 5 is connected to the lower end of the connecting seat 81, so that the cylinder 5 drives the entire traction mechanism to move up and down.

[0039] It includes a detection device 10, used to detect whether the position of the sliding door 11 is pressed down on the track when the furnace door 1 is closed.

[0040] In this embodiment, two detection devices 10 are provided on the front side of the furnace body. They are respectively located at the upper limit of the sliding door 11 when the furnace door 1 is closed, that is, the furnace door 1 can block the furnace opening to achieve the closure of the furnace door, and the sliding door 11 is not pressed down on the track. If the furnace door 1 moves up again, the furnace door 1 cannot be closed.

[0041] The lower limit of the sliding door 11 when the furnace door 1 is closed means that the furnace door can block the furnace door opening without pressing down onto the track. If the furnace door 1 moves down further, the sliding door 11 will press down onto the track. The detection device 10 uses a photoelectric switch.

[0042] The detection device 10 can be linked with an external PLC control system to determine the position of the furnace door through infrared light and execute different actions of the adjusting rod 8. The PLC control system can record the number of times the adjusting rod 8 is operated. After the preset number of times is reached, an alarm for the maintenance and replacement of the anchor chain can be issued.

[0043] A vertical guide rail 4 is provided on the side of the furnace body, and the adjustment plate 6 of the traction device is set on the slider of the guide rail 4. In this embodiment, the opening and closing state of the furnace door 1 is controlled by the lifting and lowering of the traction device to drive the anchor chain.

[0044] The guide wheel assembly includes a first guide wheel assembly 2 located at the upper end of the furnace body and a second guide wheel assembly 3 located at the side end of the furnace body. The guide wheel assembly is used to guide the direction of the anchor chain. The first guide wheel assembly 2 corresponds to the hoisting buckle of the furnace door 1, and the second guide wheel assembly 3 corresponds to the guide rail 4.

[0045] The working process of this example:

[0046] When it is necessary to open, the push rod of cylinder 5 retracts, driving the traction mechanism to move down along guide rail 4, so that the anchor chain lifts the furnace door 1, thus completing the opening of the furnace door 1.

[0047] When it is necessary to close, the push rod of cylinder 5 extends, driving the traction mechanism to rise along guide rail 4. The furnace door 1 relies on gravity to pull the anchor chain to complete the closing of the furnace door 1. The push-pull hook can extend into the push-pull door 11.

[0048] If the detection device at the upper limit position detects furnace door 1, the position of the adjusting rod 8 will not change;

[0049] If the detection device at the lower limit detects the furnace door 1, the motor 71 drives the main drive wheel 7 to rotate, which in turn drives the rotating seat 82 to rotate via the transmission from the drive wheel 72. The adjusting rod 8 descends along the limit frame 9, and the lifting anchor chain raises the initial position of the furnace door 1 when it is closed, preventing the sliding door 11 from pressing down on the track.

[0050] The foregoing has described one or more embodiments of the present utility model in detail. However, the description is only a preferred embodiment of the present utility model and should not be considered as limiting the scope of the present utility model. All equivalent changes and improvements made within the scope of the claims of the present utility model should still fall within the patent coverage of the present utility model.

Claims

1. An adjustment device for a multi-purpose furnace door, comprising an anchor chain, the end of which is connected to a lifting buckle of the furnace door (1) via a guide wheel assembly, characterized in that: Includes a traction mechanism that slides on the side of the furnace body. The traction mechanism includes an adjusting rod (8) that can pull the other end of the anchor chain. The driving device drives the traction mechanism to move, which is used to control the opening and closing state of the furnace door (1). The adjusting rod (8) can extend and retract on the adjusting plate (6) of the traction mechanism to adjust the initial position of the furnace door (1) when it is closed.

2. The adjustment device for a multi-purpose furnace door according to claim 1, characterized in that: The traction mechanism includes a limiting frame (9) and a rotatable rotating seat (82) provided on the adjusting plate (6). The lower end of the adjusting rod (8) is threaded into the rotating seat (82), and its upper end is engaged in the limiting frame (9) through a limiting block (91).

3. The adjustment device for a multi-purpose furnace door according to claim 1, characterized in that: It includes a detection device (10) for detecting whether the position of the sliding door (11) is pressed down on the track when the furnace door (1) is closed.

4. The adjustment device for a multi-purpose furnace door according to claim 3, characterized in that: Two detection devices (10) are provided, located at the upper and lower limits allowed by the sliding door (11) when the furnace door (1) is closed.

5. The adjustment device for a multi-purpose furnace door according to claim 2, characterized in that: The traction mechanism includes a connecting seat (81) disposed at the lower end of the adjusting plate (6), and the lower end of the rotating seat (82) is rotatably connected to the cavity of the connecting seat (81).

6. The adjustment device for a multi-purpose furnace door according to claim 5, characterized in that: The driving device cooperates with the connecting seat (81), and the rotating seat (82) is driven to rotate by a set of meshing gears.

7. The adjustment device for a multi-purpose furnace door according to claim 6, characterized in that: The gear set includes a main drive wheel (7) rotatable on the adjusting plate (6) and a driven wheel (72) meshing with it, with the upper end of the rotating seat (82) embedded in the center of the driven wheel (72).

8. The adjustment device for a multi-purpose furnace door according to claim 1, characterized in that: A guide rail (4) is provided on the side of the furnace body, and the adjusting plate (6) is provided on the slider of the guide rail (4).

9. The adjustment device for a multi-purpose furnace door according to claim 8, characterized in that: The guide wheel assembly includes a first guide wheel assembly (2) disposed at the upper end of the furnace body and a second guide wheel assembly (3) disposed at the side end of the furnace body.

10. The adjustment device for a multi-purpose furnace door according to claim 3, characterized in that: The detection device (10) uses a photoelectric switch.

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