JP5769593B2 - In-furnace transfer device and heating furnace - Google Patents

Description

  The present invention relates to an in-furnace transport apparatus for transporting an object to be processed in the furnace and a heating furnace equipped with such an in-furnace transport apparatus. In particular, when transporting an object to be processed in the furnace by the in-furnace transfer device, the object to be processed is transferred in order by moving it on the fixed beam provided above the hearth along the transfer direction. The moving frame provided along the conveying direction of the workpiece is reciprocally moved in the vertical direction and the feeding direction to perform a walking operation, and the workpiece is sequentially moved on the fixed beam by the moving frame and conveyed. Compared to the conventional walking beam type in-furnace transfer device, the equipment is very simple, and the overall cost can be greatly reduced, and maintenance can be easily performed. is there.

  Conventionally, in a heating furnace or the like, a workpiece such as a steel slab, a steel plate or the like is sequentially conveyed in the furnace and processed continuously, and thus the workpiece is processed in the furnace. A walking beam type is widely used as the in-furnace transfer device for transferring the pieces in order.

  Here, in the walking beam type in-furnace conveying apparatus, generally, as shown in Patent Documents 1 to 4 and the like, the conveying direction of the object to be processed via a support member on the hearth provided in the furnace. A plurality of fixed beams along the direction of the object to be processed are provided with a necessary interval in a direction intersecting the conveyance direction of the workpiece, and from the moving frame provided below the hearth through the penetration part provided in the hearth A direction in which a plurality of moving beams intersect with the direction of conveyance of the object to be processed so that the supporting member protruding above the substrate holds the movement beam extending substantially along the entire length of the furnace along the direction of conveyance of the object to be processed Are provided through a required interval.

  In the walking beam type in-furnace conveying apparatus, the moving frame is supported by the walking beam driving means, and the moving frame is driven by the walking beam driving means, so that each moving beam provided on the moving frame is provided. Is moved back and forth in the up and down direction and the feeding direction to make a walking motion (rectangular motion), and the workpieces are sequentially moved on the fixed beam by each moving beam, and the workpieces are sequentially moved in the furnace. It is supposed to let you.

  Here, when each moving beam provided on the moving frame is operated for walking by the walking beam driving means as described above, the walking beam driving means is enlarged, and the above is placed under the hearth of the heating furnace or the like as described above. In order to provide a simple moving frame and walking beam driving means, it is necessary to increase the depth of digging under the hearth. There is a problem that a large amount of power is required to drive the vehicle and the running cost is high.

  In addition, when the above-mentioned walking beam type in-furnace transfer device is installed in the heating furnace that heats the workpiece, the above moving beams are prevented from being excessively heated and deformed or damaged. Therefore, each moving beam is cooled by water.

  However, in the walking beam type in-furnace transport apparatus, each moving beam is provided so as to extend substantially the entire length of the furnace along the transport direction of the workpiece as described above. In order to cool the entire moving beam extending in the direction of water, a large water cooling facility is required, and the water cooling loss increases.

JP 63-50413 A JP-A-8-199227 Japanese Patent Laid-Open No. 10-183235 JP 2000-335723 A

  The present invention relates to an in-furnace transport apparatus that transports an object to be processed in the furnace and a heating furnace equipped with such an in-furnace transport apparatus. It is an object to solve a problem.

  That is, in the present invention, in a furnace such as a heating furnace, the workpiece is moved by the in-furnace transfer device in order on the fixed beam provided above the hearth in order to be transferred as described above. Compared to a walking beam type in-furnace transfer device, the facility is very simple, the overall cost can be greatly reduced, and maintenance and the like can be easily performed. .

In the first in- furnace transport apparatus according to the present invention, in order to solve the above-described problems, a fixed beam along the transport direction of the workpiece crosses the transport direction of the workpiece in the upper part of the hearth. A plurality of conveyance guide grooves that penetrate the hearth along the conveyance direction of the workpiece are provided in the direction intersecting with the conveyance direction of the workpiece. is, the cart running in the conveying direction of the bottom of the hearth along a conveyance guide groove of the object to be processed, lifting the holding portion for lifting protrudes upwardly through the transport guide groove described above is provided Rutotomoni An in- furnace transport apparatus provided with a cooling means for cooling the lifting / lowering holding part, and raising the lifting / lowering holding part provided on the cart to move the object to be processed held by the fixed beam. If you hold it in this lift holding part To, and so as to convey the object to be processed held on the elevating holding portion by driving the cart of the to a predetermined position of the fixed beam.
Further, in the second in- furnace transfer apparatus according to the present invention, a plurality of fixed beams along the transfer direction of the object to be processed are disposed above the hearth via a required interval in a direction intersecting the transfer direction of the object to be processed. A conveyance guide groove extending from the inlet to the outlet of the heating furnace along the conveyance direction of the workpiece so as to pass through the hearth is required in a direction intersecting the conveyance direction of the workpiece. Elevated and held by a plurality of carts that are spaced apart from each other and that travel in the direction of the workpiece to be processed along the conveyance guide groove below the hearth and project upward and downward through the conveyance guide groove. In-furnace transfer device provided with a portion, raising and lowering the lifting and lowering holding portion provided in the cart, and holding the workpiece held by the fixed beam to the lifting and lowering holding portion, Elevating and maintaining the above cart The object to be processed held on the section by successively conveyed to a predetermined position of the fixed beams, and so as to convey the object to be processed from the entrance of the furnace to carry-out port by cart above.

  In this way, like a conventional walking beam type in-furnace conveying apparatus, a moving frame that holds a plurality of moving beams extending substantially along the entire length of the furnace along the conveying direction of the object to be processed is conveyed. It is not necessary to provide a large walking beam driving means that is provided below the hearth along the direction and moves the moving frame to reciprocate the moving beams in the vertical direction and the feeding direction to perform a walking operation.

  Further, in order to hold the object to be processed in the elevating and holding unit provided in the cart as described above, it is necessary to provide a plurality of moving beams extending substantially the entire length of the furnace as in the walking beam type in-furnace transfer device. The structure inside the furnace is simplified.

Here, in this in-furnace transfer device, if a cooling means for cooling the lifting holding part provided in the cart is provided, the lifting holding part for holding the workpiece is excessively heated in the furnace and deformed. Or being damaged .

  Further, as described above, the elevating / holding unit provided in the cart is raised, the workpiece held by the fixed beam is held by the elevating / holding unit, and the cart is run and held by the elevating / holding unit. When transporting the processed object to a predetermined position of the fixed beam, a plurality of the carts can be provided in a direction intersecting the transport direction of the processed object corresponding to each transport guide groove. It is also possible to provide a plurality of the above-described carts at a necessary interval in the conveyance direction of the workpiece.

  And in the heating furnace which concerns on this invention, in order to convey a to-be-processed object in order in a furnace and to heat it continuously, it was made to use the above furnace conveying apparatuses.

  Further, in the heating furnace according to the present invention, a loading side wall surface guide groove is provided on the loading portion side of the heating furnace for loading the workpiece into the heating furnace so as to correspond to the above-described conveyance guiding groove, and this loading side The cart can be guided to the outside of the heating furnace on the carry-in side through the wall surface guide groove. If it does in this way, a cart can be guided to the exterior of a heating furnace in the carrying-in part side, and a cart can be repaired or exchanged.

  Further, a carry-in guide groove is provided in the carry-in portion for carrying the workpiece into the heating furnace so as to correspond to the above-mentioned carry guide groove and carry-in side wall surface guide groove, and the cart is provided through the carry-in guide groove. The lift holding unit is raised to hold the workpiece in the carry-in unit in the lift holding unit, and the workpiece held in the lift holding unit through the carry-in guide groove and the carry-in side wall surface guide groove It can be carried into the heating furnace. If it does in this way, the carrying-in apparatus of the to-be-processed object normally installed as another installation will become unnecessary.

  Further, in the heating furnace according to the present invention, an unloading side wall surface guide groove is provided on the unloading portion side of the heating furnace for unloading the workpiece to the outside of the heating furnace so as to correspond to the above-described transfer guide groove, and this unloading side The cart can be guided to the outside of the heating furnace on the carry-out side through the wall surface guide groove. If it does in this way, a cart can be led to the exterior of a heating furnace in the carrying-out part side, and a cart can be repaired or exchanged.

  Further, the unloading section for unloading the object to be processed out of the heating furnace is provided with unloading guide grooves so as to correspond to the above-described conveying guide groove and unloading side wall surface guiding groove, and the object to be processed is held by the lifting holding section in the cart. An object can be carried out of the heating furnace through the carry-out side wall surface guide groove and the carry-out guide groove. If it does in this way, the carrying-out apparatus of the to-be-processed object normally installed as another installation will become unnecessary.

  In the in-furnace transport apparatus according to the present invention, as described above, the cart that travels in the transport direction of the workpiece under the hearth is provided with an up-and-down holding unit that protrudes upward and downward through the transport guide groove, and this up-and-down holding The work piece held by the fixed beam is held by the lift holder, and the cart is moved to move the work piece held by the lift holder to a predetermined position of the fixed beam. Since the workpieces are transported one after another in the furnace, a moving frame that holds a plurality of moving beams under the hearth, as in the conventional walking beam type in-furnace transport apparatus, and this movement There is no need to provide a large apparatus such as a walking beam driving means for driving the frame to move each moving beam.

  As a result, the use of the in-furnace transfer device of the present invention can reduce the digging depth under the hearth in the heating furnace or the like, greatly reducing the cost required for the facility and reducing the running cost, In addition, since the floor is dug, the rails for the cart are simply laid, so that a wide space can be secured and maintenance can be easily performed.

  Further, in the in-furnace transfer apparatus according to the present invention, the object to be processed held by the elevating / holding unit is moved by moving the cart while the object to be processed is held by the elevating / holding unit provided in the cart. In order to transport the workpiece to a predetermined position, the lifting / lowering holding unit may be long enough to hold the workpiece, and the workpiece can be moved like a moving beam in a conventional walking beam type in-furnace carrier device. It is not necessary to provide the furnace so as to extend substantially the entire length of the furnace along the conveying direction, and when cooling such an elevating / holding unit, a large water cooling facility such as the above moving beam is required or a water cooling loss is large. It wo n’t be.

  Further, in the heating furnace according to the present invention, when the carry-in side wall surface guide groove and the carry-out side wall surface guide groove are provided so as to correspond to the transport guide groove as described above, the carry-in side wall surface guide groove and the carry-out side wall surface guide groove are passed through. The cart can be guided out of the heating furnace, and the maintenance and replacement of the cart can be easily performed without stopping and cooling the heating furnace.

  Furthermore, if a loading guide groove or a unloading guide groove is provided in the carrying-in section for carrying the workpiece into the heating furnace or the carrying-out section for carrying out the workpiece to the outside of the heating furnace as described above, it is usually different. The equipment for carrying out the object to be processed and the equipment for carrying out the equipment installed as equipment become unnecessary, the equipment is simplified, and the cost is reduced.

It is a schematic longitudinal cross-sectional explanatory drawing along the longitudinal direction of the heating furnace which provided the in-furnace conveying apparatus which concerns on embodiment of this invention. It is a schematic longitudinal cross-sectional explanatory drawing along the width direction of the heating furnace which provided the in-furnace conveying apparatus which concerns on the same embodiment. It is a schematic cross-sectional explanatory drawing along the longitudinal direction of the heating furnace which provided the in-furnace conveying apparatus which concerns on the same embodiment. In the heating furnace in the above embodiment, a partial explanation showing a state in which the lift holding unit provided on the cart is raised and the workpiece held on the fixed beam is held on the lift holding unit. FIG. In the heating furnace in said embodiment, it is the partial explanatory view which showed the state which moved the cart to the predetermined position in the conveyance direction of the to-be-processed object in the state holding the to-be-processed object on the raising / lowering holding part. FIG. 5 is a partial explanatory view showing a state in which, in the heating furnace in the above embodiment, a lift holding unit in a cart moved to a predetermined position is lowered to hold an object to be processed on a fixed beam at a predetermined position. In a heating furnace in the above-mentioned embodiment, it is a partial explanatory view showing a state where a cart is moved in a direction opposite to a conveyance direction of a workpiece and led to a position of a workpiece to be conveyed next. In a heating furnace in the above-mentioned embodiment, it is a schematic longitudinal cross-sectional explanatory drawing along the longitudinal direction of the heating furnace which provided two carts in a conveyance direction of a processed object via a required interval in the conveyance direction of an object. In the heating furnace in the above-described embodiment, three carts in the in-furnace transfer device are provided in the transfer direction of the object to be processed through a required interval, and the object to be processed before heat processing is carried into the heating furnace. In addition, a carry-in side wall surface guide groove and a carry-in guide groove are provided so as to correspond to the carry guide groove in the hearth, and the above-described carry guide groove is provided on the carry-out portion side for carrying out the heat-treated workpiece from the heating furnace. It is a schematic cross-sectional explanatory drawing along the longitudinal direction of the heating furnace which provided the unloading side wall surface guide groove and the unloading guide groove so as to correspond. It is a schematic longitudinal cross-sectional explanatory drawing along the longitudinal direction of the heating furnace in embodiment shown in FIG. In the heating furnace in the above-described embodiment, three carts in the in-furnace transfer device are provided in the transfer direction of the object to be processed through a required interval, and the object to be processed before heat processing is carried into the heating furnace. In addition, a carry-in side wall surface guide groove is provided so as to correspond to the conveyance guide groove in the hearth, and the heat treatment object to be carried out from the heating furnace is made to correspond to the conveyance guide groove. It is a schematic longitudinal cross-sectional explanatory drawing which showed the state which provided the carrying-out side wall surface guide groove and led the cart outside the heating furnace.

  Hereinafter, an in-furnace transfer apparatus according to an embodiment of the present invention and a heating furnace provided with the in-furnace transfer apparatus will be specifically described with reference to the accompanying drawings. In addition, the in-furnace conveyance apparatus and heating furnace which concern on this invention are not limited to what was shown to the following embodiment, In the range which does not change the summary of invention, it can change suitably and can implement.

  In the heating furnace 10 of this embodiment, as shown in FIGS. 1 to 3, a plurality of combustion devices 12 are provided on the side wall 11, and a required interval in the conveying direction of the workpiece A on the furnace floor 13. The support members 14a are erected via the support members 14a, and the fixed beams 14 are provided on the support members 14a along the conveying direction of the object A to be processed. A plurality of heaters 10 are provided in the width direction of the heating furnace 10 orthogonal to the transport direction with a required interval.

  Here, in the heating furnace 10 of this embodiment, in order to sequentially heat-treat the workpiece A, the loading door 15a provided at the carry-in port 15 of the heating furnace 10 is opened, and the heating process in the loading unit 1 is performed. The previous workpiece A is carried into the heating furnace 10 through the carry-in port 15 so that the workpiece A is held on the fixed beam 14.

  Next, the workpiece A thus held on the fixed beam 14 is heated in the heating furnace 10 by the combustion device 12 and the workpiece A held on the fixed beam 14 will be described later. The in-furnace transfer device 20 is sequentially transferred to the downstream side in the transfer direction on the fixed beam 14 and heat-treated.

  And the unloading door 16a provided in the carrying-out port 16 of this heating furnace 10 is opened, and the to-be-processed object A heat-processed as mentioned above is carried out to the carrying-out part 2 outside the heating furnace 10 through this carrying-out port 16. Like that.

Here, in the heating furnace 10 of this embodiment, an object to be processed A held on the fixed beam 14, is successively conveyed to the downstream side in the top of the fixed beam 14 by furnace conveyance device 20 In this case, the conveyance guide groove 17 along the conveyance direction of the workpiece A so as to pass through the hearth 13 of the heating furnace 10 is arranged in a conveyance direction of the workpiece A at a position not overlapping the fixed beam 14. A plurality of heaters 10 are provided in the width direction of the heating furnace 10 orthogonal to each other with a necessary interval.

  In the in-furnace transport apparatus 20, the guide rails 21 along the transport direction of the workpiece A are made to correspond to the transport guide grooves 17 on the floor surface G below the hearth 13. A plurality of carts 22, which are self-propelled on the respective guide rails 21, are provided on the respective carts 22 provided on the respective guide rails 21 and protrude upward through the corresponding conveyance guide grooves 17. And an elevating / lowering holding portion 22b that is moved up and down by the elevating device 22a.

  Then, in the above-described in-furnace transfer apparatus 20, when the workpiece A held on the fixed beam 14 is sequentially transferred on the fixed beam 14 to the downstream side in the transfer direction, as shown in FIG. 4. Further, the lifting / lowering holding part 22b is lifted to a position above the fixed beam 14 by the lifting / lowering device 22a in each cart 22, and the workpiece A held on the fixed beam 14 is placed on the lifting / lowering holding part 22b. Try to keep it.

  Next, with the workpiece A held in the lift holding portion 22b as described above, the cart 22 is moved along the guide rail 21 to the predetermined position in the conveying direction of the workpiece A as shown in FIG. The object A to be processed, which is moved and held by the lift holding part 22b, is transported to a predetermined position of the fixed beam 14.

  Thereafter, as shown in FIG. 6, the lifting / lowering holding portion 22b holding the workpiece A is lowered to the original position located below the fixed beam 14 by the lifting / lowering device 22a. The workpiece A held by the portion 22b is held on the fixed beam 14 on the downstream side in the transport direction from the original position.

  And after holding the to-be-processed object A on the fixed beam 14 from the raising / lowering holding | maintenance part 22b as mentioned above, said cart 22 is made into the reverse direction to the conveyance direction of the to-be-processed object A along the guide rail 21. As shown in FIG. 7, the cart 22 is guided to the position of the workpiece A to be transported next. Thereafter, the above-described operation is repeated many times so that the workpieces A held on the fixed beam 14 are sequentially conveyed on the fixed beam 14 downstream in the conveying direction. .

  Moreover, in this embodiment, it is made to cool in order to prevent that the said raising / lowering holding | maintenance part 22b is heated too much in the heating furnace 10, and deform | transforms or damages. For example, a pipe bent into a reverse groove shape is used as the lifting / lowering holding part 22b, and cooling water is guided to the water channel 22c formed in the lifting / lowering holding part 22b by a cooling means 23 such as a pump, and the lifting / lowering holding part 22b is prevented from being overheated.

  In this embodiment, the cart 22 that runs on the guide rail 21 is provided. However, the cart 22 can be moved along the guide rail 21 from the outside.

  In this embodiment, only one cart 22 as described above is provided on each guide rail 21. For example, as shown in FIG. Two or more carts 22 as described above are provided, and the workpieces A held on the fixed beam 14 are sequentially transported and moved to the downstream side in the transport direction by each cart 22. You can also.

  Further, the workpiece A before being heated as described above is carried into the heating furnace 10 from the carry-in portion 1 outside the heating furnace 10, and the workpiece A that has been heat-treated in the heating furnace 10 is heated. As shown in FIGS. 9 and 10, the above-described in-furnace transfer device 20 is used to carry out the above-described in-furnace conveying device 20 from the inside of the furnace 10 to the carry-out unit 2 outside the heating furnace 10. A carry-in side wall surface guide groove 18 a is provided so as to correspond to the conveyance guide groove 17, a carry-in guide groove 1 a is provided in the carry-in part 1, and the carry-out side of the heating furnace 10 corresponds to the conveyance guide groove 17. Thus, the carry-out side wall surface guide groove 18b can be provided, and the carry-out guide groove 2a can be provided in the carry-out portion 2.

  In this case, when the workpiece A before the heat treatment in the carry-in unit 1 is carried into the heating furnace 10, the cart 22 is guided from the heating furnace 10 to the bottom of the carry-in unit 1. The raising / lowering holding part 22b in the cart 22 is raised through the carrying-in guide groove 1a in the carrying-in part 1, and the workpiece A in the carrying-in part 1 is held on the raising / lowering holding part 22b. And in the state which hold | maintained the to-be-processed object A in the raising / lowering holding part 22b in this way, the cart 22 is moved to the heating furnace 10 from the carrying-in part 1, and the to-be-processed object A hold | maintained at said raising / lowering holding part 22b is carried out. Along the carry-in guide groove 1a, the carry-in portion 1 carries the load into the heating furnace 10 through the carry-in entrance 15 and the carry-in side wall surface guide groove 18a. Thereafter, the elevation holding unit 22b is lowered through the conveyance guide groove 17, and the workpiece A held by the elevation holding unit 22b is held on the fixed beam 14 provided in the heating furnace 10. .

  Further, when unloading the workpiece A heated in the heating furnace 10 from the heating furnace 10 to the unloading section 2 outside the heating furnace 10, the elevating and lowering holding section 22 b in the cart 22 is raised to raise the heating furnace 10. The workpiece A that has been heat-treated inside is held by the lifting / lowering holding portion 22b. In this state, the cart 22 is moved from the heating furnace 10 below the unloading portion 2, and the lifting / lowering holding portion 22b is moved. The workpiece A is moved from the conveying guide groove 17 along the unloading guide groove 2a through the unloading port 16 and the unloading side wall surface guiding groove 18b, and the workpiece A held in the lift holding portion 22b is moved from the inside of the heating furnace 10. It leads to the carry-out part 2 through the carry-out port 16. Thereafter, the lifting / lowering holding part 22b is lowered through the carrying-out guide groove 2a, and the workpiece A held by the lifting / lowering holding part 22b is held by the carry-out part 2.

  If it carries out as mentioned above, the to-be-processed object A before heat processing will be carried in into the heating furnace 10 from the carrying-in part 1, or the to-be-processed object A heat-treated may be carried out from the inside of the heating furnace 10 to the carrying-out part 2. Can be easily performed.

  Further, as described above, the carry-in side wall surface guide groove 18a and the carry-in guide groove 1a are provided on the carry-in side of the heating furnace 10 so as to correspond to the feed guide groove 17, and the carry-out side wall surface is provided on the carry-out side of the heating furnace 10. If the guide groove 18b and the unloading guide groove 2a are provided to guide the cart 22 out of the heating furnace 10, maintenance and repair of the cart 22 and the like can be performed without stopping the heating furnace 10 and cooling it. . Furthermore, the carrying-in part 1 and the carrying-out part 2 provided with the carrying-in guide groove 1a and the carrying-out guide groove 2a have the effect of protecting the cart 22 from the scale falling from the workpiece A before and after heating and the radiated heat. is there.

  Moreover, as shown in FIG. 11, it is also possible to eliminate the carry-in part 1 and the carry-out part 2 provided with the carry-in guide groove 1a and the carry-out guide groove 2a, and in this case, Maintenance space when the cart 22 is taken out of the heating furnace 10 can be widened, and maintenance, repair, and replacement of the cart 22 and the like can be performed more easily.

DESCRIPTION OF SYMBOLS 1 Carry-in part 1a Carry-in guide groove 2 Carry-out part 2a Carry-out guide groove 10 Heating furnace 11 Side wall 12 Combustion device 13 Furnace 14 Fixed beam, 14a Support member 15 Carry-in port, 15a Carry-in door 16 Carry-out port, 16a Carry-out door 17 Conveyance Guide groove 18a Carry-in side wall surface guide groove, 18b Carry-out side wall surface guide groove 20 In-furnace transfer device 21 Guide rail 22 Cart, 22a Lifting device, 22b Lifting holding part, 22c Water channel 23 Cooling means A Workpiece G Floor surface

Claims (10)

A plurality of fixed beams are provided above the hearth along the conveyance direction of the object to be processed in a direction intersecting the conveyance direction of the object to be processed with a predetermined interval, and the above-mentioned furnace is disposed along the conveyance direction of the object to be processed. A plurality of conveyance guide grooves penetrating the floor are provided in a direction intersecting the conveyance direction of the object to be processed with a predetermined interval, and below the furnace floor in the conveyance direction of the object along the conveyance guide groove. the cart travels, in the above-described conveyance guide groove elevating holder for elevating protrudes upward is provided through Rutotomoni, furnace transporting apparatus cooling means for cooling the elevating holder is provided, the cart The lifting / lowering holding unit provided on the lifting / lowering unit is raised so that the workpiece held by the fixed beam is held by the lifting / lowering holding unit, and the cart is moved and held by the lifting / lowering holding unit. The workpiece is fixed beam Furnace transporting device, characterized in that to convey into position. A plurality of fixed beams are provided above the hearth in the direction in which the workpiece is transported in a direction intersecting the workpiece transport direction with a predetermined interval, and the workpiece is processed so as to penetrate the hearth. A plurality of conveyance guide grooves extending from the carry-in port to the carry-out port of the heating furnace along the conveyance direction of the object are provided through a necessary interval in a direction intersecting the conveyance direction of the object to be processed. An in-furnace transport apparatus in which a cart that travels in the transport direction of an object to be processed along a transport guide groove is provided with an up-and-down holding unit that protrudes upward and downward through the transport guide groove. The raising / lowering holding unit provided is raised to hold the object to be processed held by the fixed beam on the raising / lowering holding unit, and the treatment is performed by running the cart and holding the raising / lowering holding unit. Place the object in place on the fixed beam By successively conveyed, furnace transporting apparatus characterized by conveying the treatment object to outlet port from entrance of the heating furnace by the cart above. 3. The in-furnace transport apparatus according to claim 2 , further comprising a cooling unit that cools the elevating and holding unit that holds the workpiece. In the in-furnace conveyance apparatus of any one of Claims 1-3 , the said cart is provided with two or more in the direction which cross | intersects the conveyance direction of a to-be-processed object corresponding to each conveyance guide groove. An in-furnace transfer device. The in-furnace transport apparatus according to any one of claims 1 to 4 , wherein a plurality of the carts are provided in a transport direction of an object to be processed at a predetermined interval. apparatus. A heating furnace provided with the in-furnace transfer device according to any one of claims 1 to 5 . 7. The heating furnace according to claim 6 , wherein a loading side wall surface guide groove is provided on the loading portion side of the heating furnace for loading the workpiece into the heating furnace so as to correspond to the conveyance guiding groove, and the loading side wall surface. A heating furnace characterized in that the cart is guided to the outside of the heating furnace on the carry-in portion side through a guide groove. The heating furnace according to claim 7 , wherein a loading guide groove is provided in the loading portion for loading the workpiece into the heating furnace so as to correspond to the above-described conveying guide groove and the loading side wall surface guiding groove. The lifting / lowering holding portion provided in the cart is raised through the guide groove, the workpiece in the loading portion is held by the lifting / lowering holding portion, and the lifting / lowering holding portion is passed through the loading guide groove and the loading side wall surface guide groove. A heating furnace characterized in that an object to be processed held in a container is carried into a heating furnace. The heating furnace according to any one of claims 6 to 8 , wherein an unloading side wall surface corresponding to the conveying guide groove on the unloading portion side of the heating furnace for unloading the workpiece to the outside of the heating furnace. A heating furnace characterized in that a guide groove is provided and the cart is guided to the outside of the heating furnace on the carry-out side through the carry-out side wall surface guide groove. 10. The heating furnace according to claim 9 , wherein an unloading guide groove is provided in the unloading part for unloading the workpiece to the outside of the heating furnace so as to correspond to the above-described conveying guide groove and unloading side wall surface guide groove, and the cart is moved up and down. A heating furnace characterized in that an object to be processed held in a holding part is carried out of the heating furnace through the carry-out side wall surface guide groove and the carry-out guide groove.