Heat treatment furnace for marine shafting forgings

Abstract

The utility model relates to the technical field of heat treatment furnaces, in particular to a heat treatment furnace for marine shafting forgings, which not only facilitates the transfer and conveying of the marine shafting forgings and improves the treatment efficiency, but also utilizes redundant heat and improves the energy utilization rate. A heat treatment furnace is included; the device comprises a heat treatment furnace, and further comprises a transfer mechanism, a traction mechanism, a heating mechanism and a heat exchange mechanism, the transfer mechanism is installed on the heat treatment furnace and fixes forgings, the traction mechanism is installed on the transfer mechanism and drives the transfer mechanism to be conveyed into the furnace, and the heating mechanism is installed on the heat treatment furnace and heats the forgings; the heat exchange mechanism is installed on the heat treatment furnace and used for utilizing redundant heat, and heat waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment furnaces, in particular to a heat treatment furnace for ship shafting forgings. Background Art

[0002] Marine shafting forgings are an indispensable and important part of shipbuilding. They are mainly used in the power transmission and support systems of ships, including main engine forgings (such as crankshafts, intermediate shafts and crossheads) and shafting forgings (such as thrust shafts, intermediate shafts and stern shafts). These forgings play a key role in the propulsion, steering and support of ships.

[0003] Existing heat treatment furnaces, such as the one disclosed in utility model patent application number 202122725826.2, are used for processing large forgings. The main structure of the heat treatment furnace includes a furnace body, a feeding furnace door for feeding materials, a heating space, a supporting chassis fixedly mounted at the bottom of the furnace body for supporting forgings, a fixing and adjusting device for fixing the forgings on the supporting chassis, heating devices for processing the forgings on both sides of the supporting chassis, and a heating adjustment device. During use, the forgings are first placed on the supporting chassis, and the first outer supporting fixing rods and the second inner supporting fixing rods fix the forgings so that the supporting chassis can fix forgings of different sizes. After the fixation is completed, the heating device performs a forging operation on the forgings, and a second driving device causes the adjustment base plate and the adjustment auxiliary plate to move synchronously toward the supporting chassis. When the adjustment base plate and the adjustment auxiliary plate are moved to the appropriate position, the second driving device causes the first adjustment plate to also move toward the supporting chassis, so that the first adjustment plate, the adjustment base plate, and the adjustment auxiliary plate form a new heating space, thereby achieving reasonable utilization of the heat generated by the heating device.

[0004] However, existing heat treatment furnaces are not convenient for transporting forgings. Marine shafting forgings are large in size and weight, and manual transportation is time-consuming and labor-intensive. In addition, a lot of heat is lost in the heat treatment furnace, resulting in a large amount of heat energy waste. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a heat treatment furnace for marine shafting forgings which not only facilitates the transportation and delivery of marine shafting forgings and improves the processing efficiency, but also utilizes excess heat and improves energy utilization.

[0006] The utility model discloses a heat treatment furnace for marine shafting forgings, comprising a heat treatment furnace; further comprising a transfer mechanism, a traction mechanism, a heating mechanism and a heat exchange mechanism, wherein the transfer mechanism is mounted on the heat treatment furnace and fixes the forgings, the traction mechanism is mounted on the transfer mechanism and drives the transfer mechanism to be transported into the furnace, the heating mechanism is mounted on the heat treatment furnace and heats the forgings, and the heat exchange mechanism is mounted on the heat treatment furnace and utilizes excess heat to reduce heat waste; multiple groups of forgings are placed on the transfer mechanism, the traction mechanism is started to transport the forgings into the heat treatment furnace, the heating mechanism is started to heat the forgings, the heating position and heating temperature of the forgings can be accurately controlled as needed, and the heat exchange mechanism utilizes excess heat above the heat treatment furnace to reduce heat loss. Multiple groups of forgings are placed on the transfer mechanism, the traction mechanism is started to transport the forgings into the heat treatment furnace, the heating mechanism is started to heat the forgings, the heating position and heating temperature of the forgings can be accurately controlled as needed, and the heat exchange mechanism utilizes excess heat above the heat treatment furnace to reduce heat loss.

[0007] Preferably, the heat treatment furnace includes a base, a furnace body, two sets of slides, two sets of cylinders and a baffle, the bottom end of the base is connected to the ground, the bottom end of the furnace body is connected to the top end of the base, a cavity is provided inside the furnace body and a feed port is provided at the front end of the furnace body, the two sets of slides are installed above the feed port of the furnace body, the two sets of cylinders are installed on the front side wall of the furnace body, the baffle is slidably installed on the two sets of slides and the top end of the baffle is connected to the bottom end of the two sets of cylinders; the traction mechanism transports the transfer mechanism and forgings into the cavity of the furnace body through the feed port of the furnace body, and then the two sets of cylinders push the baffle to slide downward to cover the feed port of the furnace body, thereby reducing heat loss.

[0008] Preferably, the transfer mechanism includes two sets of tracks, four sets of wheels, two sets of connecting seats, heat insulation plates and multiple sets of fixed cones, the bottom ends of the two sets of tracks are connected to the top end of the base, the four sets of wheels are rotatably installed on the two sets of wheels, the connecting seats are connected to the two sets of wheels respectively located on the two sets of tracks, the bottom end of the heat insulation plate is connected to the top end of the two sets of connecting seats, and the bottom ends of the multiple sets of fixed cones are all connected to the top end of the heat insulation plate; the marine shafting forgings are placed on the heat insulation plate, the two adjacent sets of fixed cones can fix the forgings, and then the traction mechanism is started to pull the connecting seat, the four sets of wheels rotate and slide along the two sets of tracks, and the heat insulation plate enters the cavity of the furnace body, making it convenient for the heating mechanism to heat the forgings.

[0009] Preferably, the traction mechanism includes an electric motor, a reducer 1, a first guide wheel, a traction rope, a second guide wheel and a tensioner. The bottom end of the motor is connected to the top of the base, the bottom end of the reducer 1 is connected to the top of the base, the first guide wheel is rotatably mounted on the reducer 1, the two ends of the traction rope are respectively fixedly mounted on two sets of connecting seats, the second guide wheel is mounted in the cavity of the furnace body, and the tensioner is mounted on the base; the traction rope is passed around the first guide wheel and the second guide wheel, the motor is started, the motor drives the first guide wheel to rotate through the reducer 1, the tensioner puts the traction rope in a tensioned state, and the first guide wheel drives the traction rope to rotate, thereby pulling the transfer mechanism into the cavity of the furnace body. After the heat treatment is completed, the motor rotates in the opposite direction to pull the transfer mechanism out.

[0010] Preferably, the heating mechanism includes a servo motor, two sets of reducer 2, a transmission shaft, two sets of lead screws, a slider and a resistance wire. The servo motor is installed on the furnace body, the two sets of reducer 2 are both installed on the furnace body, the transmission shaft is rotatably installed on the two sets of reducer 2, the two sets of lead screws are rotatably installed in the cavity of the furnace body and are respectively longitudinally connected to the two sets of reducer 2, the slider is slidably installed on the two sets of lead screws, and the resistance wire is installed on the slider; the resistance wire is connected to the power supply to heat the forging body, and the servo motor is started according to the heating part of the forging as needed. The servo motor drives the reducer 2 connected to it, and the reducer 2 drives another set of reducer 2 through the transmission shaft. The two sets of reducer 2 respectively drive the two sets of lead screws to rotate, and the two sets of lead screws drive the slider to move to the specified position, which is convenient for the resistance wire to position and heat it.

[0011] Preferably, the heat exchange mechanism includes a water pump, a water suction pipe, a water supply pipe, a heat exchange pipe and a valve. The bottom end of the water pump is connected to the top of the furnace body, the water suction pipe is installed on the water pump, the water supply pipe is installed on the water pump, the heat exchange pipe is installed on the top of the cavity inside the furnace body, and the valve is installed on the heat exchange pipe; the water suction pipe is connected to the water source, and the water pump is started. The water pump pumps out water through the water suction pipe and then transports it to the heat exchange pipe through the water supply pipe. The resistance wire heats the cavity inside the furnace body, and the hot air diffuses upward. The heat exchange pipe exchanges heat with the hot air at the top of the cavity inside the furnace body, thereby improving energy utilization and preventing the screw from being deformed by heat due to high temperature. When the water temperature in the heat exchange pipe is too high, the valve is opened to discharge the hot water in the heat exchange pipe for convenient use in other aspects.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: multiple groups of forgings are placed on a transfer mechanism, the traction mechanism is started to transport the forgings into a heat treatment furnace, and the heating mechanism is started to heat the forgings. The heating position and heating temperature of the forgings can be accurately controlled as needed, and the heat exchange mechanism utilizes the excess heat above the heat treatment furnace to reduce heat loss. Multiple groups of forgings are placed on a transfer mechanism, the traction mechanism is started to transport the forgings into a heat treatment furnace, and the heating mechanism is started to heat the forgings. The heating position and heating temperature of the forgings can be accurately controlled as needed, and the heat exchange mechanism utilizes the excess heat above the heat treatment furnace to reduce heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a right side structural schematic diagram of the present utility model;

[0014] Figure 2 This is a schematic diagram of the cross-section axonometric structure of the heat treatment furnace and transfer mechanism of the utility model;

[0015] Figure 3 This is a schematic diagram of the cross-section axonometric structure of the traction mechanism of the utility model;

[0016] Figure 4 This is a schematic diagram of the cross-sectional axonometric structure of the heating mechanism and heat exchange mechanism of the utility model;

[0017] Figure 5 It is an axonometric structural diagram of the heating mechanism and heat exchange mechanism of the utility model.

[0018] Markings in the accompanying drawings: 01, heat treatment furnace; 11, base; 12, furnace body; 13, slide; 14, cylinder; 15, baffle; 02, transfer mechanism; 21, track; 22, wheel; 23, connecting seat; 24, heat insulation board; 25, fixed cone; 03, traction mechanism; 31, motor; 32, reducer 1; 33, first guide wheel; 34, traction rope; 35, second guide wheel; 36, tensioner; 04, heating mechanism; 41, servo motor; 42, reducer 2; 43, transmission shaft; 44, screw; 45, slider; 46, resistance wire; 05, heat exchange mechanism; 51, water pump; 52, water suction pipe; 53, delivery pipe; 54, heat exchange pipe; 55, valve. DETAILED DESCRIPTION

[0019] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention. Example 1

[0020] The utility model is a heat treatment furnace for marine shaft forgings, comprising a heat treatment furnace 01; further comprising a transfer mechanism 02, a traction mechanism 03, a heating mechanism 04 and a heat exchange mechanism 05, wherein the transfer mechanism 02 is mounted on the heat treatment furnace 01 and fixes the forgings, the traction mechanism 03 is mounted on the transfer mechanism 02 and drives the transfer mechanism 02 to be transported into the furnace, the heating mechanism 04 is mounted on the heat treatment furnace 01 and heats the forgings, and the heat exchange mechanism 05 is mounted on the heat treatment furnace 01 and utilizes excess heat to reduce heat waste; the heat treatment furnace 01 comprises a base 11, a furnace body 12, two sets of slideways 13, two sets of cylinders 14 and a baffle 1 5. The bottom end of the base 11 is connected to the ground, the bottom end of the furnace body 12 is connected to the top end of the base 11, a cavity is provided inside the furnace body 12 and a feed port is provided at the front end of the furnace body 12, two sets of slides 13 are installed above the feed port of the furnace body 12, two sets of cylinders 14 are installed on the front side wall of the furnace body 12, a baffle 15 is slidably installed on the two sets of slides 13 and the top end of the baffle 15 is connected to the bottom end of the two sets of cylinders 14; the transfer mechanism 02 includes two sets of rails 21, four sets of wheels 22, two sets of connecting seats 23, heat insulation plates 24 and multiple sets of fixed cones 25, the bottom ends of the two sets of rails 21 are connected to the top end of the base 11, and the four sets of wheels 22 rotate The traction mechanism 03 includes a motor 31, a reducer 32, a first guide wheel 33, a traction rope 34, a second guide wheel 35 and a tensioner 36. The bottom end of the motor 31 is connected to the top of the base 11, the bottom end of the reducer 32 is connected to the top of the base 11, the first guide wheel 33 is rotatably mounted on the reducer 32, and the two ends of the traction rope 34 are fixedly mounted on the two sets of On the connecting seat 23, the second guide wheel 35 is installed in the cavity of the furnace body 12, and the tensioner 36 is installed on the base 11; the heating mechanism 04 includes a servo motor 41, two sets of reducers 42, a transmission shaft 43, two sets of lead screws 44, a slider 45 and a resistance wire 46, the servo motor 41 is installed on the furnace body 12, the two sets of reducers 42 are both installed on the furnace body 12, the transmission shaft 43 is rotatably installed on the two sets of reducers 42, the two sets of lead screws 44 are both rotatably installed in the cavity of the furnace body 12 and are respectively longitudinally connected to the two sets of reducers 42, the slider 45 is slidably installed on the two sets of lead screws 44, and the resistance wire 46 is installed on the slider 45;When it is working, first, place the marine shafting forging on the heat shield 24, and the two adjacent sets of fixing cones 25 can fix the forging, then pass the traction rope 34 around the first guide wheel 33 and the second guide wheel 35, start the motor 31, the motor 31 drives the first guide wheel 33 to rotate through the reducer 32, the tensioner 36 puts the traction rope 34 in a tensioned state, the first guide wheel 33 drives the traction rope 34 to rotate, the traction rope 34 pulls the connecting seat 23, the four sets of wheels 22 rotate and slide along the two sets of rails 21, the heat shield 24 enters the cavity of the furnace body 12, and then the two sets of cylinders 14 push Baffle 15 slides downward to block the feed port of furnace body 12, reducing heat loss. Resistance wire 46 is connected to power to heat the forging. The servo motor 41 is activated to adjust the heating area of ​​the forging as needed. This servo motor 41 drives a second reducer 42 connected to it. This second reducer 42 drives another second reducer 42 via a transmission shaft 43. These two second reducers 42 each rotate two sets of lead screws 44. These two sets of lead screws 44 move sliders 45 to a designated position, facilitating positioning and heating by resistance wire 46. After heat treatment is complete, motor 31 rotates in the opposite direction to pull transfer mechanism 02 out. Example 2

[0021] like Figures 1 to 5As shown, a heat treatment furnace for marine shafting forgings of the present invention is based on Example 1; the heat exchange mechanism 05 includes a water pump 51, a water extraction pipe 52, a water delivery pipe 53, a heat exchange pipe 54 and a valve 55. The bottom end of the water pump 51 is connected to the top end of the furnace body 12, the water extraction pipe 52 is installed on the water pump 51, the water delivery pipe 53 is installed on the water pump 51, the heat exchange pipe 54 is installed on the top end of the cavity inside the furnace body 12, and the valve 55 is installed on the heat exchange pipe 54; when it is working, first, the marine shafting forgings are placed on the heat insulation board 24, and the two adjacent The fixed cone 25 can fix the forging, and then the traction rope 34 is passed around the first guide wheel 33 and the second guide wheel 35, and the motor 31 is started. The motor 31 drives the first guide wheel 33 to rotate through the reducer 32, and the tensioner 36 puts the traction rope 34 in a tensioned state. The first guide wheel 33 drives the traction rope 34 to rotate, and the traction rope 34 pulls the connecting seat 23. The four sets of wheels 22 rotate and slide along the two sets of tracks 21. The heat insulation board 24 enters the cavity of the furnace body 12, and then the two sets of cylinders 14 push the baffle 15 to slide downward to cover the furnace body. 12 feed port, reduce heat loss, the resistance wire 46 is connected to the power supply to heat the forging body, and the heating part of the forging is adjusted as needed, and the servo motor 41 is started. The servo motor 41 drives the reducer 2 42 connected thereto, and the reducer 2 42 drives another set of reducer 2 42 through the transmission shaft 43. The two sets of reducers 2 42 respectively drive the two sets of lead screws 44 to rotate, and the two sets of lead screws 44 drive the slider 45 to move to the specified position, which is convenient for the resistance wire 46 to position and heat it. The water pump 52 is connected to the water source, and the water pump 51 is started. Water is pumped out through the pumping pipe 52 and then transported to the heat exchange pipe 54 through the water delivery pipe 53. The resistance wire 46 heats the interior of the cavity of the furnace body 12, and the hot air diffuses upward. The heat exchange pipe 54 exchanges heat with the hot air at the top of the cavity of the furnace body 12, thereby improving energy utilization and preventing the screw 44 from being deformed by heat due to high temperature. When the water temperature in the heat exchange pipe 54 is too high, the valve 55 is opened to discharge the hot water in the heat exchange pipe 54 for convenient use in other aspects. After the heat treatment is completed, the motor 31 rotates in the opposite direction to pull out the transfer mechanism 02.

[0022] The electric motor 31, reducer 1 32, servo motor 41, reducer 2 42 and water pump 51 of the utility model are purchased on the market. Technicians in this industry only need to install and operate them according to the accompanying instruction manuals without the need for creative work by technicians in this field.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A heat treatment furnace for ship shafting forgings, comprising a heat treatment furnace (01); characterized in that: The heat treatment furnace (01) further comprises a transfer mechanism (02), a traction mechanism (03), a heating mechanism (04) and a heat exchange mechanism (05). The transfer mechanism (02) is installed on the heat treatment furnace (01) and fixes the forgings. The traction mechanism (03) is installed on the transfer mechanism (02) and drives the transfer mechanism (02) to be transported into the furnace. The heating mechanism (04) is installed on the heat treatment furnace (01) and heats the forgings. The heat exchange mechanism (05) is installed on the heat treatment furnace (01) and utilizes excess heat to reduce heat waste.

2. A heat treatment furnace for marine shafting forgings according to claim 1, characterized in that: The heat treatment furnace (01) includes a base (11), a furnace body (12), two groups of slides (13), two groups of cylinders (14) and a baffle (15), the bottom end of the base (11) is connected to the ground, the bottom end of the furnace body (12) is connected to the top end of the base (11), a cavity is provided inside the furnace body (12) and a feed port is provided at the front end of the furnace body (12), the two groups of slides (13) are installed above the feed port of the furnace body (12), the two groups of cylinders (14) are installed on the front side wall of the furnace body (12), the baffle (15) is slidably installed on the two groups of slides (13) and the top end of the baffle (15) is connected to the bottom end of the two groups of cylinders (14).

3. A heat treatment furnace for marine shafting forgings according to claim 2, characterized in that: The transfer mechanism (02) includes two sets of tracks (21), four sets of wheels (22), two sets of connecting seats (23), a heat insulation plate (24) and multiple sets of fixed cones (25). The bottom ends of the two sets of tracks (21) are connected to the top end of the base (11). The four sets of wheels (22) are rotatably mounted on the two sets of wheels (22). The connecting seats (23) are connected to the two sets of wheels (22) respectively located on the two sets of tracks (21). The bottom ends of the heat insulation plate (24) are connected to the top ends of the two sets of connecting seats (23). The bottom ends of the multiple sets of fixed cones (25) are all connected to the top end of the heat insulation plate (24).

4. A heat treatment furnace for marine shafting forgings according to claim 3, characterized in that: The traction mechanism (03) includes a motor (31), a reducer (32), a first guide wheel (33), a traction rope (34), a second guide wheel (35) and a tensioner (36). The bottom end of the motor (31) is connected to the top end of the base (11), the bottom end of the reducer (32) is connected to the top end of the base (11), the first guide wheel (33) is rotatably mounted on the reducer (32), the two ends of the traction rope (34) are respectively fixedly mounted on two sets of connecting seats (23), the second guide wheel (35) is mounted in the cavity of the furnace body (12), and the tensioner (36) is mounted on the base (11).

5. A heat treatment furnace for marine shafting forgings according to claim 2, characterized in that: The heating mechanism (04) includes a servo motor (41), two sets of reducers (42), a transmission shaft (43), two sets of lead screws (44), a slider (45) and a resistance wire (46). The servo motor (41) is mounted on the furnace body (12). The two sets of reducers (42) are both mounted on the furnace body (12). The transmission shaft (43) is rotatably mounted on the two sets of reducers (42). The two sets of lead screws (44) are both rotatably mounted in the cavity of the furnace body (12) and are longitudinally connected to the two sets of reducers (42). The slider (45) is slidably mounted on the two sets of lead screws (44). The resistance wire (46) is mounted on the slider (45).

6. A heat treatment furnace for marine shafting forgings according to claim 2, characterized in that: The heat exchange mechanism (05) includes a water pump (51), a water extraction pipe (52), a water delivery pipe (53), a heat exchange pipe (54) and a valve (55). The bottom end of the water pump (51) is connected to the top end of the furnace body (12). The water extraction pipe (52) is installed on the water pump (51). The water delivery pipe (53) is installed on the water pump (51). The heat exchange pipe (54) is installed at the top end of the cavity inside the furnace body (12). The valve (55) is installed on the heat exchange pipe (54).

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