A heating furnace bottom positioning device and use method thereof

Abstract

The present invention relates to the field of heating furnace parts, and specifically to a heating furnace bottom positioning device and a method for using the same, comprising an outer cover in contact with the outer side of a furnace plate; the outer cover is connected to an encoder. The present invention can be used in conjunction with photoelectric rod positioning through the setting of the positioning device, and uses a double detection method to ensure that the rotation angle of the furnace bottom chassis meets the set requirements. At the same time, the two have a mutual detection function, which is convenient for calibration during actual use.

Description

Technical Field

[0001] The invention relates to the field of heating furnace parts, in particular to a heating furnace bottom positioning device and a use method thereof. Background Art

[0002] With the rapid development of my country's high-speed rail era, the safety requirements of train wheels have received more and more attention from the society, and the quality requirements for wheels are getting higher and higher. In order to achieve traceability of each wheel, single-piece tracking is set on the train wheel production line, and the quality requirements for each wheel are very strict. For train wheels, the temperature uniformity during the heating process is important. The current wheel heating furnace is a ring-shaped heating furnace. The wheels are loaded from the feed port by an automatic manipulator. The entire furnace is divided into N angles, and each angle is divided into 3 wheels inside, middle and outside. After one angle is completed, it is controlled by the photoelectric rod positioning device at the bottom of the furnace. The entire furnace bottom rotates one angle, and the second angle is loaded after stopping. Due to the error in the positioning of the photoelectric rod, the position is offset when it reaches the discharge furnace door after running one circle. It is difficult for the automatic manipulator to support the wheel, which has a certain impact on production quality, etc. The wheel production efficiency is low and the labor intensity of the staff is high. In order to change this situation, it is necessary to design a wheel heating furnace bottom positioning device to focus on solving the above problems. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a positioning device for rotating and positioning the bottom of a heating furnace.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A heating furnace bottom positioning device comprises an outer cover in contact with the outer side of a furnace plate; the outer cover is connected with an encoder.

[0006] The outer cover is connected to the encoder through an upper base, and the upper base includes a lower base plate, and a connecting sleeve is arranged on the lower base plate; the connecting sleeve is connected to the outer cover.

[0007] The upper base is connected to the encoder through a connecting block; a connecting hole for connecting the encoder shaft is provided on the connecting block; and the connecting block is fixedly connected to the upper base.

[0008] The outer cover and the connecting sleeve are connected via a first buffer component; the first buffer component comprises a positioning rod arranged on the connecting sleeve and a positioning sleeve arranged on the inner wall of the outer cover; one end of the positioning rod is inserted into the interior of the positioning sleeve.

[0009] A first buffer spring is arranged inside the positioning sleeve; an end of the first buffer spring is connected to an end of the positioning rod.

[0010] The outer cover is spaced apart from the lower base plate; a protective layer is arranged on the outer side of the outer cover.

[0011] The encoder is connected to a second buffer component; the second buffer component includes a buffer frame connected to the encoder, and the buffer frame is connected to a supporting bottom plate.

[0012] The buffer frame can move laterally on the supporting bottom plate; the buffer frame is connected to the supporting bottom plate through a guide portion;

[0013] The guide part comprises a connecting side plate arranged on the side of the supporting bottom plate, and the connecting side plate is provided with a guide groove; the side of the buffer frame is provided with a guide block, and the guide block matches the guide groove.

[0014] An end plate is provided at the end of the supporting bottom plate, and both ends of the end plate are connected to the connecting side plate; the buffer frame is connected to the end plate through a guide rod.

[0015] A second buffer spring is arranged on the guide rod.

[0016] Each time the encoder rotates a set angle, the encoder is automatically zeroed.

[0017] A method for using a heating furnace bottom positioning device, the method comprising the following steps:

[0018] (1) Assemble the positioning device on the workbench of the heating furnace and fit the outer cover to the outer side of the furnace plate;

[0019] (2) When the furnace plate rotates, the encoder in the positioning device receives the signal and transmits it to the controller; the controller performs identification and judgment;

[0020] (3) The furnace plate continues to rotate and the positioning device continues to identify and judge.

[0021] The advantages of the present invention are:

[0022] The present invention provides a furnace bottom positioning device for a heating furnace. Through the cooperation of an encoder and an outer cover, the furnace bottom can be accurately positioned, the wheel production efficiency is greatly improved, the labor intensity of the staff is reduced, and the currently relatively mature linear encoder is used for encoding to adapt to the current furnace bottom production conditions, and the reliable operation of the entire furnace bottom is ensured. When a certain ellipse exists in the furnace bottom, the furnace bottom can still be well positioned; the failure time of the annular heating furnace positioning device is reduced, and the product quality is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0024] Figure 1 It is a stereogram of the present invention.

[0025] Figure 2 It is a cross-sectional view of the present invention.

[0026] The marks in the above figure are:

[0027] 1. Encoder; 2. Connecting block; 3. Upper base; 301. Positioning rod; 4. Outer cover; 401. Positioning sleeve; 5. First buffer spring 1; 6. Rubber pad; 7. Furnace plate; 101. Buffer rack; 1011. Guide rod, 1012. Guide block; 102. Second buffer spring; 103. Support bottom plate; 104. Connecting side plate; 1041. Guide groove; 105. End plate. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0029] A heating furnace bottom positioning device comprises an outer cover 4 in contact with the outer side of a furnace plate 7; the outer cover 4 is connected to an encoder 1; the present invention provides a heating furnace bottom positioning device, which can accurately position the furnace bottom through the cooperation of the encoder 1 and the outer cover 4, greatly improve the wheel production efficiency, reduce the labor intensity of the staff, use the currently relatively mature linear encoder 1 for encoding, adapt to the current furnace bottom production conditions, ensure the reliable operation of the entire furnace bottom, and can still better position the furnace bottom when there is a certain ellipse in the furnace bottom; reduce the failure time of the annular heating furnace positioning device and ensure product quality.

[0030] Preferably, the outer cover 4 in the present invention is connected to the encoder 1 through the upper base 3, and the upper base 3 includes a lower base plate 31, and a connecting sleeve 32 is provided on the lower base plate 31; the connecting sleeve 32 is connected to the outer cover 4; the setting of the upper base 3 facilitates the connection between the outer cover 4 and the encoder 1, and the lower base plate 31 plays a basic connection role, which is convenient for the connection with the subsequent connecting block 2. In addition, preferably, a connecting sleeve 32 is provided on the lower base plate 31 in the present invention, and the connecting sleeve 32 plays a basic connection role. The connecting sleeve 32 is connected to the outer cover 4, and the original position of the outer cover 4 is coaxially arranged with the connecting sleeve 32.

[0031] Preferably, the upper base 3 in the present invention is connected to the encoder 1 through a connecting block 2; a connecting hole for connecting the rotating shaft of the encoder 1 is provided on the connecting block 2; the connecting block 2 is fixedly connected to the upper base 3; the setting of the connecting block 2 facilitates the connection between the upper base 3 and the encoder 1. In addition, the connecting hole in the present invention is located at the center of the connecting block 2, which is conducive to ensuring the stability and dynamic balance of the entire device. In addition, as a greater optimization, the connecting block 2 and the upper base 3 in the present invention are connected at the edge by bolts.

[0032] Preferably, the outer cover 4 and the connecting sleeve 32 in the present invention are connected through a first buffer component; the first buffer component includes a positioning rod 301 arranged on the connecting sleeve 32 and a positioning sleeve 401 arranged on the inner wall of the outer cover 4; one end of the positioning rod 301 is inserted into the interior of the positioning sleeve 401; the provision of the first buffer component is conducive to ensuring that when the outer cover 4 and the connecting sleeve 32 move laterally, the influence of the lateral movement of the outer cover 4 on the position of the encoder 1 is reduced; the assembly method of the first buffer component, the outer cover 4 and the connecting sleeve 32 in the present invention can be welding or the like.

[0033] Preferably, a first buffer spring 5 is provided inside the positioning sleeve 401 in the present invention; the end of the first buffer spring 5 is connected to the end of the positioning rod 301; through the setting of the first buffer spring 5, the relative position stability of the outer cover 4 and the connecting sleeve 32 can be guaranteed; in addition, the first buffer spring 5 also has a self-returning function, that is, the setting of the first buffer spring 5 in the present invention can not only avoid the lateral movement of the outer cover 4 and the interference with the connecting sleeve 32, but also ensure the stability of the relative position of the outer cover 4 and the connecting sleeve 32.

[0034] Preferably, the outer cover 4 and the lower base plate 31 are spaced apart in the present invention; a protective layer 6 is provided on the outer side of the outer cover 4; the provision of the protective layer 6 can reduce the direct contact between the outer cover 4 and the furnace plate 7, because the outer cover 4 is generally made of rigid material, and the provision of the protective layer 6 can reduce the damage of the outer cover 4 to the outer side of the furnace plate 7.

[0035] Preferably, the encoder 1 in the present invention is connected with a second buffer component; the second buffer component includes a buffer frame 101 connected to the encoder 1, and the buffer frame 101 is connected with a supporting base plate 103; the buffer frame 101 plays a basic supporting role, the buffer frame 101 is connected to the supporting base plate 103, the supporting base plate 103 is arranged on a workbench, and the supporting base plate 103 is fixedly connected to the workbench; it plays a role of preliminary positioning; in addition, the matching mode of the supporting base plate 103 and the buffer frame 101 can be set as needed; a fixed connection mode can be adopted, and in order to have a better use effect, the following can be adopted The movable connection method in the text; in the present invention, the buffer frame 101 can move laterally on the supporting base plate 103; the buffer frame 101 is connected to the supporting base plate 103 through a guide portion; through such a setting, the encoder 1 can also move laterally. When the outer cover 4 moves laterally, when the furnace plate 7 is deformed greatly, it will cause the outer cover 4 to move laterally. When the outer cover 4 moves laterally, when the upper base 3 is driven to move, it is possible to drive the encoder 1 to move laterally. The second buffer portion is set in the present invention to avoid motion interference between the outer cover 4 and the encoder 1 when it moves laterally.

[0036] Preferably, the guide portion in the present invention includes a connecting side plate 104 arranged on the side of the supporting base plate 103, and a guide groove 1041 is provided on the connecting side plate 104; a guide block 1012 is provided on the side of the buffer frame 101, and the guide block 1012 cooperates with the guide groove 1041; through the setting of the guide groove 1041 and the guide block 1012, not only can the connection between the buffer frame 101 and the connecting side plate 104 be achieved, but also it plays an auxiliary guiding role; preferably, the cross-sections of the guide groove 1041 and the guide block 1012 in the present invention are trapezoidal; such a setting can ensure the stability of the connection between the buffer frame 101 and the connecting side plate 104 because the trapezoidal structure of the guide groove 1041 and the guide block 1012 themselves have a limiting function.

[0037] Preferably, the end of the supporting base plate 103 in the present invention is provided with an end plate 105, and both ends of the end are connected to the connecting side plate 104; the buffer frame 101 is connected to the end plate 105 through a guide rod 1011; the end plate 105 plays a supporting role; it is convenient for the installation of the guide rod 1011, and in addition, the guide rod 1011 is connected to the end plate 105, and the cooperation between the guide rod 1011 and the end plate 105, the guide rod 1011 also plays a good guiding role, ensuring the linearity of the movement of the buffer frame 101; in addition, the setting of the guide rod 1011 facilitates the setting of the second buffer spring 102.

[0038] Preferably, the guide rod 1011 of the present invention is provided with a second buffer spring 102 ; the second buffer spring 102 can not only buffer the external force exerted on the encoder 1 , but also facilitate the resetting of the encoder 1 .

[0039] Preferably, the encoder 1 in the present invention automatically calibrates to zero each time it rotates a set angle; such a setting can prevent the encoder 1 from continuously rotating and causing the error to accumulate; the automatic zeroing here can be achieved through programming, and the encoder in the present invention is connected to a controller, and the controller can adopt an existing PLC controller; the PLC controller realizes automatic zeroing of the encoder.

[0040] In addition, the positioning device disclosed in the present invention is used in conjunction with the traditional photoelectric rod positioning device at the bottom of the furnace. The rotation positioning of the traditional furnace plate requires the identification and positioning of the photoelectric rod. Here, the traditional furnace plate can also be initially positioned by a position sensor or an angle sensor. The positioning device disclosed in the present invention can be used in conjunction with the traditional photoelectric rod positioning device. The positioning device disclosed in the present invention and the traditional photoelectric rod positioning device have a mutual calibration function. Because the photoelectric rod positioning device in the present invention and the positioning device disclosed in the present invention can both identify the rotation angle of the furnace plate. When used specifically:

[0041] When the positioning device disclosed in the present invention recognizes that the furnace plate has rotated to the set position, but the traditional photoelectric rod positioning device has not fed back an in-position signal to the controller, it means that there is a deviation in the detection between the photoelectric rod positioning device and the positioning device disclosed in the present invention; it is necessary to detect whether the photoelectric rod positioning device and the positioning device disclosed in the present invention are damaged or the furnace plate is deformed; anyway, when the photoelectric rod positioning device has recognized that the furnace plate has rotated to the set position, but the positioning device disclosed in the present invention has not fed back an in-position signal at this time, it means that there is a deviation in the detection between the photoelectric rod positioning device and the positioning device disclosed in the present invention; it is necessary to detect whether the photoelectric rod positioning device and the positioning device disclosed in the present invention are damaged or the furnace plate is deformed, and repair or replace them as needed.

[0042] In order to more clearly express the structure of the present invention, the following is a detailed description in conjunction with embodiments:

[0043] The positioning device disclosed in the present invention comprises an encoder 1, a connecting block 2, an upper base 3, an outer cover 4, and a buffer frame 101; a connecting hole is opened in the middle of the connecting block 2, and the connecting block 2 is directly connected to the shaft end of the encoder 1 through the connecting hole, and it is required that there is no relative rotation between the connecting block 2 and the encoder 1, and four blind holes are opened on the outer ring of the connecting block 2, and the blind holes are fixed on the upper base 3 and can be fixed by bolts, and the outer cover 4 is installed on the outer ring of the upper base 3; a positioning rod 301, a first buffer spring 5, and a positioning sleeve 401 are arranged between the upper base 3 and the outer cover 4, the positioning rod 301 is connected to the upper base 3, the positioning sleeve 401 is connected to the outer cover 4, and the number of positioning rods 301 and positioning sleeves 401 is set The amount can be set according to actual needs; the upper and lower layers can be provided respectively as shown in the attached figure, the positioning rod 301 cooperates with the positioning sleeve 401 to prevent the relative rotation between the positioning sleeve 401 and the upper base 3, which will cause errors in the recording of the encoder 1, and the first buffer spring 5 is installed between the positioning rod 301 and the positioning sleeve 401. The first buffer spring 5 can select appropriate parameters according to the specific offset amount on site; the outer cover 4 and the upper base 3 can be radially displaced and are not rigidly connected; the outer ring of the outer cover 4 is connected to a protective layer 6; the protective layer 6 can be a rubber pad, and the protective layer 6 and the outer cover 4 are detachably connected, and the rubber pad can be replaced at any time; the bottom positioning device of the railway wheel heating furnace The position is in contact with the lower furnace plate 7 of the annular furnace bottom through the rubber pad. During the rotation of the furnace bottom, it is ensured that there is a certain amount of extrusion between the rubber pad and the furnace bottom positioning device, so that the furnace bottom positioning device rotates with the annular furnace; the lower body of the encoder 1 is fitted with the buffer frame 101, one side of the buffer frame 101 is in an arc shape, and the other side is provided with a raised positioning rod 301, and the two side surfaces are provided with guide blocks 1012. The encoder 1 and the buffer frame 101 fall on the supporting bottom plate 103, and the two buffer frames 101 are symmetrically placed to fix the encoder 1. The guide blocks 1012 on both sides of the buffer frame 101 are in rubber with the guide grooves 1041, and the buffer frame 101 can move relative to the guide grooves 1041, and the positioning rod 301 is sleeved There is a second buffer spring 102, and an end plate 105 is arranged on the outer side of the positioning rod 301, and the end plate 105 is connected to the connecting side plate 104; the second buffer spring 102 is arranged between the buffer frame 101 and the support plate, and the upper end of the connecting side plate 104 is connected to the sealing plate; the purpose is to ensure the sealing of the entire second buffer component; in addition, the encoder 1 in the present invention can move horizontally along the guide groove 1041, so as to ensure complete contact with the lower furnace plate 7 of the furnace bottom, even if there is an offset, the device can adjust itself to make the contact with the lower furnace plate 7 intact, the device explores according to the current operating status of the photoelectric rod of the furnace bottom, and effectively controls the furnace bottom rotation program after stabilization to ensure that the rotation angle of the entire furnace bottom is fixed and the positioning is reliable.

[0044] As mentioned above, the first buffer spring 5 and the second buffer spring 102 have a certain pre-tightening force, which is beneficial to ensure the stability of the entire device.

[0045] As mentioned above, the outer ring of the outer cover 4 is connected to a rubber pad or a rough pad with a certain elasticity; it can promote friction and is convenient for replacement.

[0046] During normal operation, the spring has a certain preload force to ensure that the outer cover 4 is in perfect contact with the lower furnace plate 7. When the furnace bottom is elliptical, the outer cover 4 can move with the offset of the contact position of the furnace bottom, so that they do not slide relative to each other. Once relative sliding occurs, an alarm will be automatically triggered. The device can be used to automatically locate according to the position of the furnace bottom condition in a whole circle, thereby improving the control accuracy.

[0047] A method for using a heating furnace bottom positioning device, the method comprising the following steps:

[0048] (1) Assemble the positioning device onto the workbench of the heating furnace, and fit the outer cover 4 to the outer side of the furnace plate 7;

[0049] (2) When the furnace plate 7 rotates, the encoder 1 in the positioning device receives the signal and transmits the signal to the controller; the controller performs identification and judgment;

[0050] (3) The furnace plate 7 continues to rotate, and the positioning device continues to identify and judge.

[0051] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A heating furnace bottom positioning device, characterized in that: It includes an outer cover in contact with the outer side of the furnace plate; the outer cover is connected to an encoder; The outer cover is connected to the encoder through an upper base, the upper base includes a lower base plate, and a connecting sleeve is provided on the lower base plate; the connecting sleeve is connected to the outer cover; The upper base is connected to the encoder via a connecting block; the connecting block is provided with a connecting hole for connecting the encoder shaft; the connecting block is fixedly connected to the upper base; The outer cover and the connecting sleeve are connected via a first buffer component; the first buffer component comprises a positioning rod arranged on the connecting sleeve and a positioning sleeve arranged on the inner wall of the outer cover; one end of the positioning rod is inserted into the positioning sleeve; A first buffer spring is provided inside the positioning sleeve; an end of the first buffer spring is connected to an end of the positioning rod; The encoder is connected to a second buffer component; the second buffer component includes a buffer frame connected to the encoder, and the buffer frame is connected to a supporting bottom plate; The buffer frame can move laterally on the supporting bottom plate; the buffer frame is connected to the supporting bottom plate through a guide portion; the guide portion includes a connecting side plate arranged on the side of the supporting bottom plate, and the connecting side plate is provided with a guide groove; a guide block is provided on the side of the buffer frame, and the guide block cooperates with the guide groove; The end of the supporting bottom plate is provided with an end plate, and both ends of the end are connected to the connecting side plate; the buffer frame is connected to the end plate through a guide rod; A second buffer spring is arranged on the guide rod.

2. A heating furnace bottom positioning device according to claim 1, characterized in that: The outer cover is spaced apart from the lower base plate; a protective layer is arranged on the outer side of the outer cover.

3. The heating furnace bottom positioning device according to claim 1, characterized in that: Each time the encoder rotates a set angle, the encoder is automatically zeroed.

4. The method for using the heating furnace bottom positioning device according to any one of claims 1 to 3, characterized in that: The method of use comprises the following steps: (1) Assemble the positioning device on the workbench of the heating furnace and fit the outer cover to the outer side of the furnace plate; (2) When the furnace plate rotates, the encoder in the positioning device receives the signal and transmits it to the controller; the controller makes identification and judgment; (3) The furnace plate continues to rotate and the positioning device continues to identify and judge.

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