Casting blank multi-section heating device and steel pushing mechanism

Abstract

The utility model relates to a casting blank multi-section heating device and a steel pushing mechanism, and relates to the technical field of hot rolled steel. The device comprises a workbench and a hydraulic cylinder, the hydraulic cylinder is installed on the workbench, the end of a piston rod of the hydraulic cylinder is vertically connected with a push plate, and the push plate is opposite to a furnace opening of the heating furnace; two heat dissipation plates surrounding a cylinder body of the hydraulic cylinder are arranged on the outer side of the cylinder body of the hydraulic cylinder, a water storage cavity is formed in each heat dissipation plate, a first branch pipe and a second branch pipe which are used for communicating the two water storage cavities are connected between the two heat dissipation plates, a water inlet pipe is connected to the first branch pipe, a water outlet pipe is connected to the second branch pipe, and a water tank is arranged on one side of the workbench. The water inlet end of the water pump is connected with a water pumping pipe, and the water outlet pipe is communicated with the water tank. The hydraulic oil in the hydraulic cylinder is maintained within the allowable working temperature range through water circulation heat absorption, so that the viscosity and lubricating performance of the hydraulic oil are stable, and the working efficiency of the hydraulic cylinder and the efficiency of a hydraulic system are guaranteed.

Description

Technical Field

[0001] The present application relates to the field of hot rolling steel technology, and in particular to a multi-stage heating device for a cast billet and a steel pushing mechanism. Background Art

[0002] Hot rolling refers to rolling performed above the crystallization temperature, which can improve the processing performance of metals and alloys, that is, to break up the coarse grains in the cast state, significantly heal cracks, reduce or eliminate casting defects, transform the cast structure into a deformed structure, and improve the processing performance of the alloy.

[0003] In order to heat the steel billet to the crystallization temperature, a natural gas heating furnace is usually used to heat the steel billet. During operation, the operator uses a crane and a hoist to lift the steel billet onto the workbench, and then uses a hydraulic cylinder to push the steel billet from the workbench into the heating furnace.

[0004] Since the natural gas heating furnace will generate a lot of heat when working, part of this heat is used to heat the target object, and the other part will be dissipated into the surrounding environment, causing the surrounding temperature to rise. The hydraulic cylinder is facing the entrance of the heating furnace and is easily affected by the temperature. At the same time, during the continuous pushing process of the hydraulic cylinder, the hydraulic cylinder's own workload, friction, hydraulic oil resistance and other factors will also generate heat. Affected by environmental and self factors, it is easy to cause the temperature of the hydraulic oil in the cylinder to rise, thereby reducing the working performance of the hydraulic cylinder and the efficiency of the hydraulic system. Utility Model Content

[0005] In order to improve the problem of rising temperature of hydraulic oil in the hydraulic cylinder and reducing the working performance of the hydraulic cylinder and the efficiency of the hydraulic system, the present application provides a multi-stage heating device for casting and a steel pushing mechanism.

[0006] The steel pushing mechanism of the multi-stage heating device for casting provided in the present application adopts the following technical solution:

[0007] A steel pushing mechanism of a multi-stage heating device for a cast billet comprises a workbench and a hydraulic cylinder, wherein the hydraulic cylinder is mounted on the workbench, a push plate is vertically connected to the end of the piston rod of the hydraulic cylinder, and the push plate is opposite to the furnace opening of the heating furnace;

[0008] Two heat sinks surrounding the hydraulic cylinder body are provided on the outside of the cylinder body of the hydraulic cylinder, and a water storage chamber is provided in each of the heat sinks. A first branch pipe and a second branch pipe for connecting the two water storage chambers are connected between the two heat sinks, and a water inlet pipe is connected to the first branch pipe, and a water outlet pipe is connected to the second branch pipe. A water tank is provided on one side of the workbench, and a water pump for supplying water to the water inlet pipe is provided on the water tank. A water pumping pipe is connected to the water inlet end of the water pump, and the water outlet pipe is connected to the water tank.

[0009] By adopting the above technical solution, the water pump pumps the water in the water tank to the water storage chamber, and then the water flows back to the water tank from the water storage chamber, forming a water circulation. On the one hand, the water circulation prevents the direct transfer between the external heat and the hydraulic cylinder, and on the other hand, absorbs the temperature of the hydraulic oil in the hydraulic cylinder, so that the hydraulic oil is maintained within the allowable working temperature range, and the viscosity and lubrication performance of the hydraulic oil are stable, thereby ensuring the working performance of the hydraulic cylinder and the efficiency of the hydraulic system.

[0010] Optionally, the heat sink includes a panel and a surrounding plate, wherein two panels are provided in parallel and spaced apart, and a plurality of surrounding plates are provided and connected between the two panels, and the two panels and each of the surrounding plates form a water storage cavity.

[0011] By adopting the above technical solution, the heat sink is an assembled structure with simple structure and convenient processing.

[0012] Optionally, the panel is welded to the enclosure.

[0013] By adopting the above technical solution, welding is helpful to improve the sealing performance between the panel and the enclosure.

[0014] Optionally, ear plates are provided on both sides of each heat dissipation plate, the ear plates on the two heat dissipation plates are opposite to each other, and the two ear plates located on the same side of the hydraulic cylinder and opposite to each other are fixed by bolts.

[0015] By adopting the above technical solution, the two heat sinks are fixed so that the heat sinks can fit tightly with the cylinder body of the hydraulic cylinder, thereby improving the heat transfer efficiency; at the same time, the detachable connection of the two heat sinks also facilitates the loading and unloading of the heat sinks.

[0016] Optionally, a side of the heat dissipation plate facing the hydraulic cylinder is adapted to an outer contour of the hydraulic cylinder.

[0017] By adopting the above technical solution, the fit between the heat sink and the hydraulic cylinder is improved, so that the contact area between the two is increased, which is conducive to accelerating the transfer of heat.

[0018] Optionally, guide columns parallel to the axis of the hydraulic cylinder are provided at both ends of the push plate, a guide sleeve for the guide column to pass through is provided on the workbench, a guide seat is provided on the guide sleeve, and the guide seat is fixed to the workbench.

[0019] By adopting the above technical solution, the sliding cooperation between the guide column and the guide sleeve guides the push plate, so that the thrust direction of the hydraulic cylinder remains parallel to the moving direction of the push plate, reducing the friction resistance of the hydraulic cylinder.

[0020] Optionally, dust covers for the guide column to pass through are provided on opposite sides of the guide seat, and the dust cover has a first end and a second end, the first end is connected to the guide sleeve, and the inner circumference of the second end is provided with a sponge ring that abuts against the guide column.

[0021] By adopting the above technical solution, when the guide post moves, the relative movement between the sponge ring and the guide post scrapes off the dust particles on the outer surface of the guide post, preventing particles from entering between the guide post and the guide sleeve, thereby protecting both.

[0022] Optionally, the sponge ring is bonded and fixed to the inner circumferential surface of the second end.

[0023] By adopting the above technical solution, the operator can tear off the sponge ring for replacement to maintain the cleaning effect of the sponge ring.

[0024] A multi-stage heating device for a cast billet comprises the steel pushing mechanism described in any one of the above items.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The water circulation prevents the direct transfer between the external heat and the hydraulic cylinder, and absorbs the temperature of the hydraulic oil in the hydraulic cylinder, so that the hydraulic oil is maintained within the allowable working temperature range, and the viscosity and lubrication performance of the hydraulic oil are stable, thereby ensuring the working efficiency of the hydraulic cylinder and the efficiency of the hydraulic system;

[0027] 2. The two heat sinks are fixed and matched with the outer contour of the hydraulic cylinder, so that the heat sinks can fit closely with the cylinder body of the hydraulic cylinder, thereby improving the heat transfer efficiency;

[0028] 3. The relative movement between the sponge ring and the guide post scrapes off the dust particles on the outer surface of the guide post, preventing particles from entering between the guide post and the guide sleeve, and reducing the possibility of wear on the guide post and the guide sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0030] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0031] Figure 3 It is a schematic diagram of an embodiment of the present application for illustrating a first branch pipe and a second branch pipe.

[0032] Figure 4 It is a schematic diagram of a heat sink used in an embodiment of the present application.

[0033] Explanation of the reference numerals in the accompanying drawings: 1. workbench; 2. hydraulic cylinder; 21. push plate; 22. guide column; 23. guide sleeve; 231. guide seat; 24. dust cover; 241. sponge ring; 3. heat sink; 31. water storage chamber; 32. first branch pipe; 321. water inlet pipe; 33. second branch pipe; 331. water outlet pipe; 34. water pump; 341. water suction pipe; 35. ear plate; 301. panel; 302. enclosure; 4. water tank. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0035] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as a limitation on the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0036] like Figure 1 The embodiment of the present application discloses a steel pushing mechanism of a multi-stage heating device for casting, including a workbench 1 and a hydraulic cylinder 2. The hydraulic cylinder 2 is installed on the workbench 1. The hydraulic cylinder 2 is powered by a hydraulic pump station. The end of the piston rod of the hydraulic cylinder 2 is vertically connected to a push plate 21, and the push plate 21 is opposite to the furnace mouth of the heating furnace.

[0037] like Figure 1 and Figure 2 Both ends of the push plate 21 are vertically provided with guide columns 22 parallel to the axis of the hydraulic cylinder 2, and the workbench 1 is provided with a guide sleeve 23 for the guide column 22 to pass through, and the guide sleeve 23 is provided with a guide seat 231, and the guide seat 231 is fixed to the workbench 1.

[0038] like Figure 2 Dust-proof sleeves 24 are provided on both opposite sides of the guide seat 231 for the guide column 22 to pass through. The dust-proof sleeve 24 has a first end and a second end. The first end is connected to the guide sleeve 23. The inner circumference of the second end is provided with a sponge ring 241 that abuts against the guide column 22. The sponge ring 241 is bonded and fixed to the inner circumference of the second end.

[0039] During operation, the operator uses a crane to cooperate with a lifting device to lift the steel billet onto the workbench 1, and places the steel billet between the push plate 21 and the heating furnace. The piston rod of the hydraulic cylinder 2 extends, driving the push plate 21 forward, and the push plate 21 pushes the steel billet forward into the heating furnace. When the push plate 21 moves, it drives the two guide pillars 22 to move along the guide sleeve 23. The sponge ring 241 scrapes off the particles on the surface of the guide pillar 22 to prevent it from entering the guide sleeve 23, thereby avoiding the wear of the surface of the guide pillar 22 and the inner surface of the guide sleeve 23.

[0040] like Figure 1 , Figure 3 and Figure 4 Two heat sinks 3 surrounding the cylinder body of the hydraulic cylinder 2 are provided on the outside of the cylinder body of the hydraulic cylinder 2, and a water storage chamber 31 is provided in each heat sink 3. A first branch pipe 32 and a second branch pipe 33 for connecting the two water storage chambers 31 are connected between the two heat sinks 3. The first branch pipe 32 is connected to a water inlet pipe 321, and the second branch pipe 33 is connected to a water outlet pipe 331. A water tank 4 is provided on one side of the workbench 1. A water pump 34 for supplying water to the water inlet pipe 321 is provided on the water tank 4. A water inlet end of the water pump 34 is connected to a water pumping pipe 341, and the water outlet pipe 331 is connected to the water tank 4.

[0041] Cooling water is stored in the water tank 4. The water pump 34 transports the water in the water tank 4 to the water storage chamber 31 through the water pumping pipe 341, the water inlet pipe 321, and the first branch pipe 32, and then flows back to the water tank 4 through the second branch pipe 33 and the water outlet pipe 331, forming a water circulation. The water circulation is used to absorb the heat of the hydraulic oil in the hydraulic cylinder 2, so that the temperature of the hydraulic oil is maintained within the rated working range.

[0042] like Figure 3 and Figure 4 The heat sink 3 includes a panel 301 and a surrounding plate 302. Two panels 301 are provided in parallel and spaced apart. A plurality of surrounding plates 302 are provided and welded between the two panels 301. The panels 301 are connected end to end in sequence. The two panels 301 and the surrounding plates 302 form a water storage chamber 31.

[0043] The side of the panel 301 facing the hydraulic cylinder 2 is adapted to the outer contour of the hydraulic cylinder 2, so that the panel 301 can fit with the outer side wall of the cylinder body of the hydraulic cylinder 2 to increase the contact area.

[0044] In each heat sink 3, the outward facing panel 301 is provided with ear plates 35 on both sides parallel to its own length direction, the ear plates 35 on the two heat sinks 3 are opposite, and the two ear plates 35 located on the same side of the hydraulic cylinder 2 and opposite to each other are fixed by bolts.

[0045] The utility model also provides a multi-stage heating device for castings including the steel pushing mechanism disclosed in the above embodiment. For the structures of other parts of the multi-stage heating device for castings, please refer to the prior art and will not be described in detail herein.

[0046] The above description is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention.

Claims

1. A steel pushing mechanism of a multi-stage heating device for a casting, characterized in that: It comprises a workbench (1) and a hydraulic cylinder (2), wherein the hydraulic cylinder (2) is mounted on the workbench (1), the end of the piston rod of the hydraulic cylinder (2) is vertically connected to a push plate (21), and the push plate (21) is opposite to the furnace opening of the heating furnace; Two heat sinks (3) surrounding the cylinder body of the hydraulic cylinder (2) are provided on the outside of the cylinder body of the hydraulic cylinder (2); each heat sink (3) is provided with a water storage chamber (31); a first branch pipe (32) and a second branch pipe (33) for connecting the two water storage chambers (31) are connected between the two heat sinks (3); a water inlet pipe (321) is connected to the first branch pipe (32); a water outlet pipe (331) is connected to the second branch pipe (33); a water tank (4) is provided on one side of the workbench (1); a water pump (34) for supplying water to the water inlet pipe (321) is provided on the water tank (4); a water pump (341) is connected to the water inlet end of the water pump (34); and the water outlet pipe (331) is connected to the water tank (4).

2. The steel pushing mechanism of the multi-stage heating device for casting according to claim 1 is characterized in that: The heat sink (3) comprises a panel (301) and a surrounding plate (302), wherein two panels (301) are provided in parallel and spaced apart, and a plurality of surrounding plates (302) are provided and connected between the two panels (301), and the two panels (301) and each of the surrounding plates (302) enclose a water storage chamber (31).

3. The steel pushing mechanism of the multi-stage heating device for casting according to claim 2 is characterized in that: The panel (301) and the enclosure (302) are welded.

4. The steel pushing mechanism of the multi-stage heating device for casting according to claim 1 is characterized in that: Each heat sink (3) is provided with ear plates (35) on both sides, the ear plates (35) on the two heat sinks (3) are opposite to each other, and the two ear plates (35) located on the same side of the hydraulic cylinder (2) and opposite to each other are fixed by bolts.

5. The steel pushing mechanism of the multi-stage heating device for casting according to claim 1 is characterized in that: The side of the heat dissipation plate (3) facing the hydraulic cylinder (2) is adapted to the outer contour of the hydraulic cylinder (2).

6. The steel pushing mechanism of the multi-stage heating device for casting according to claim 1 is characterized in that: Both ends of the push plate (21) are provided with guide columns (22) parallel to the axis of the hydraulic cylinder (2); the workbench (1) is provided with a guide sleeve (23) for the guide column (22) to pass through; the guide sleeve (23) is provided with a guide seat (231); and the guide seat (231) is fixed to the workbench (1).

7. The steel pushing mechanism of the multi-stage heating device for casting according to claim 6 is characterized in that: The guide seat (231) is provided with dust covers (24) on opposite sides thereof for the guide column (22) to pass through, and the dust covers (24) have a first end and a second end, the first end is connected to the guide sleeve (23), and the inner circumference of the second end is provided with a sponge ring (241) which abuts against the guide column (22).

8. The steel pushing mechanism of the multi-stage heating device for casting according to claim 7 is characterized in that: The sponge ring (241) is bonded and fixed to the inner peripheral surface of the second end.

9. A multi-stage heating device for casting, characterized in that: It comprises the steel pushing mechanism as described in any one of claims 1 to 8 above.

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