Movable heating furnace

Abstract

The utility model relates to the technical field of heating furnaces, in particular to a movable heating furnace. Comprising a furnace body, a heat insulation layer mounted on the inner side of the furnace body, a plurality of heating resistance wires mounted between the heat insulation layer and the furnace body at equal angles, a furnace cover rotationally mounted at the upper end of the furnace body, a grip mounted in the middle of the front end of the furnace cover and four universal wheels arranged below the furnace body. According to the utility model, the original furnace body structure is scientifically and reasonably improved, and the ground bracket, the cross-shaped sliding frame, the driven chain disc, the outer stud, the driving chain disc and the transmission chain are arranged between the furnace body and the universal wheels, so that the four universal wheels can be upwards adjusted to the ground bracket after the furnace body is moved and adjusted through the universal wheels; the furnace body can be stably supported on the ground through the ground supporting frame, the stress movement problem in the fixed-point placement process after the furnace body is moved and adjusted is effectively reduced, and therefore the placement stability after the heating furnace is moved and adjusted is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pit furnaces, in particular to a movable heating furnace. Background Art

[0002] The pit furnace is one of the heating furnaces. The pit furnace is a periodic operation furnace and is suitable for the heat treatment of rod-shaped and long-shaft parts. The structure of the pit furnace is: the furnace body is a deep well in a cylindrical shape, and the workpieces are vertically loaded into the furnace by a special crane for heating. The fuels usually used are gas and fuel oil. When electricity is used as the heat source, it is called a pit resistance furnace.

[0003] As Figure 4 shown, it is the structure of the previous generation of pit furnace. In order to facilitate the movement and positioning operation of the pit furnace in the workshop, four self-locking universal wheels are installed at the lower end of the furnace body. After the furnace body is adjusted to the appropriate position, by locking the four self-locking universal wheels, the pit furnace can be fixed at a certain point on the ground. However, this movable heating furnace has the following disadvantages in actual use: due to the limited locking effect of the self-locking universal wheels, when an external force acts on the furnace body, the self-locking universal wheels are prone to rotate and disengage from the locked state, resulting in the shaking and displacement of the furnace body, and reducing the stability of the heating furnace after moving and placing.

[0004] In view of this, it is particularly important to design and manufacture a movable heating furnace that can be stably placed on the ground after moving and reduce the movement under the action of external forces during the design, manufacture and actual use of the heating furnace. Content of the Utility Model

[0005] The purpose of the utility model is to provide a movable heating furnace in order to solve the problem that the previous generation of movable heating furnace has poor stability after moving and adjusting and is prone to move under force.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A movable heating furnace includes a furnace body, a heat insulation layer installed inside the furnace body, a plurality of heating resistance wires installed at equal angles between the heat insulation layer and the furnace body, a furnace cover rotatably installed at the upper end of the furnace body, a handle installed in the middle of the front end of the furnace cover, and four universal wheels arranged below the furnace body. Four ground support frames facing the universal wheels are fixedly connected at equal angles to the lower end of the furnace body. A cross slide is movably installed between the four ground support frames. The four universal wheels are respectively installed below the four brackets of the cross slide. A positioning mechanism is arranged between the furnace body and the cross slide to drive the cross slide to slide vertically between the four ground support frames to realize the lifting adjustment of the universal wheels.

[0008] As a further description of the above technical scheme:

[0009] The positioning mechanism includes an outer stud rotatably mounted in the middle of the lower end of the furnace body and penetrating downwardly through the cross slide, an inner screw sleeve fixed in the middle of the cross slide and corresponding to the outer stud, a driving part arranged between the furnace body and the outer stud, and a guiding part arranged between the furnace body and the cross slide.

[0010] As a further description of the above technical solution:

[0011] The driving part comprises a driven chain plate fixed on the upper end of the outer stud and fitted with the lower end surface of the furnace body, a driving chain plate rotatably installed on the outer edge of the lower end of the furnace body, and a transmission chain installed between the driven chain plate and the driving chain plate.

[0012] As a further description of the above technical solution:

[0013] A vertically distributed crank is rotatably mounted on the outer edge of the lower end of the active chain disc.

[0014] As a further description of the above technical solution:

[0015] The guide part comprises fixed studs fixed at equal angles at the lower end of the furnace body and located outside the four corners of the cross slide, and an X-shaped guide frame detachably installed between the four fixed studs and buckled with the cross slide.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0017] In the utility model, the original furnace body structure is scientifically and rationally improved, and a ground support frame, a cross slide, a driven chain plate, an outer stud, an active chain plate and a transmission chain are arranged between the furnace body and the universal wheel. When the crank on the active chain plate is held and turned, the outer stud can rotate forward or reversely under the furnace body under the transmission action of the active chain plate, the driven chain plate and the transmission chain. Under the spiral transmission action between the outer stud and the inner screw sleeve, the cross slide can move upward or downward between the four ground support frames, thereby driving the universal wheel to leave the ground or contact the ground downward. This structure can adjust the four universal wheels upward to the ground support frame after the furnace body is moved and adjusted by the universal wheels, so that the furnace body can be stably supported on the ground by the ground support frame, effectively reducing the occurrence of force movement problems during the fixed-point placement after the furnace body is moved and adjusted, thereby improving the stability of the placement of the heating furnace after the movement and adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a movable heating furnace proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0020] Figure 3 This is a three-dimensional disassembly schematic diagram of the cross carriage and the X-shaped guide frame in the present utility model;

[0021] Figure 4 It is a structural schematic diagram of the previous generation of movable heating furnaces in the prior art.

[0022] Legend description:

[0023] 1. Furnace body; 101. Heat insulation layer; 102. Heating resistance wire; 103. Ground support frame; 104. Fixed stud; 2. Furnace cover; 201. Handle; 3. Driven sprocket; 301. External stud; 4. Driving sprocket; 401. Crank; 5. Transmission chain; 6. Cross carriage; 601. Inner screw sleeve; 7. Universal wheel; 8. X-shaped guide frame. Specific implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1 - 4 , the present utility model provides a technical solution: a movable heating furnace, including a furnace body 1, a heat insulation layer 101 installed inside the furnace body 1, a plurality of heating resistance wires 102 installed at equal angles between the heat insulation layer 101 and the furnace body 1, a furnace cover 2 rotatably installed at the upper end of the furnace body 1, a handle 201 installed in the middle of the front end of the furnace cover 2, and four universal wheels 7 arranged below the furnace body 1. Four ground support frames 103 facing the universal wheels 7 are fixedly connected to the lower end of the furnace body 1 at equal angles. A cross carriage 6 is movably installed between the four ground support frames 103. The four universal wheels 7 are respectively installed below the four brackets of the cross carriage 6. A positioning mechanism is provided between the furnace body 1 and the cross carriage 6 to drive the cross carriage 6 to slide vertically between the four ground support frames 103 to realize the lifting adjustment of the universal wheels 7.

[0026] Specifically, as Figures 1 - 3As shown, the positioning mechanism includes an outer stud 301 rotatably installed in the middle of the lower end of the furnace body 1 and penetrating downwardly through the cross slide 6, an inner screw sleeve 601 fixed in the middle of the cross slide 6 and corresponding to the outer stud 301, a driving part arranged between the furnace body 1 and the outer stud 301, and a guiding part arranged between the furnace body 1 and the cross slide 6. When the outer stud 301 rotates, under the action of the spiral rotation between the outer stud 301 and the inner screw sleeve 601, the rotation of the outer stud 301 can be converted into the lifting movement of the cross slide 6, thereby driving the universal wheel 7 to contact the ground downward or to leave the ground upward, thereby realizing the adjustment operation of the moving and pushing state of the furnace body 1 and the fixed-point placement state.

[0027] Specifically, Figure 2 and Figure 3 As shown, the driving part includes a driven chain plate 3 fixed to the upper end of the outer stud 301 and fitted with the lower end surface of the furnace body 1, a driving chain plate 4 rotatably installed on the outer edge of the lower end of the furnace body 1, and a transmission chain 5 installed between the driven chain plate 3 and the driving chain plate 4. At the same time, a vertically distributed crank handle 401 is rotatably installed on the outer edge of the lower end of the driving chain plate 4 to facilitate the operator to hold and rotate and adjust the driving chain plate 4.

[0028] Specifically, Figure 2 and Figure 3 As shown, the guide portion includes fixed studs 104 fixed at equal angles at the lower end of the furnace body 1 and located on the outside of the four corners of the cross slide 6, and an X-shaped guide frame 8 detachably installed between the four fixed studs 104 and engaged with the cross slide 6. On the one hand, it can limit the lowest position of the downward movement of the cross slide 6 to prevent the cross slide 6 from excessively moving downward and detaching from the four ground support frames 103. On the other hand, it can guide the cross slide 6 during the lifting and adjusting process, thereby improving the stability of the lifting and adjusting movement of the cross slide 6.

[0029] Working principle: When in use, in a fixed-point placement state, the furnace body 1 can be stably supported on the ground by four ground support frames 103. When the furnace body 1 needs to be moved and adjusted, the operator can hold and turn the crank 401 to operate the active chain plate 4 to rotate under the furnace body 1. Under the transmission action between the active chain plate 4, the driven chain plate 3 and the transmission chain 5, the outer stud 301 can rotate in the opposite direction under the furnace body 1. Under the spiral transmission action between the outer stud 301 and the inner screw sleeve 601, the cross slide 6 can move downward between the four ground support frames 103, thereby driving the four universal wheels 7 to contact the ground downward. When the four ground support frames 103 are all lifted above the ground, the furnace body 1 can be pushed on the ground through the four universal wheels 7.

[0030] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A movable heating furnace, comprising a furnace body (1), a heat insulation layer (101) installed inside the furnace body (1), a plurality of heating resistance wires (102) installed at equal angles between the heat insulation layer (101) and the furnace body (1), a furnace cover (2) rotatably installed at the upper end of the furnace body (1), a grip (201) installed in the middle of the front end of the furnace cover (2), and four universal wheels (7) arranged below the furnace body (1), characterized in that, Four ground support frames (103) facing the universal wheels (7) are fixedly connected to the lower end of the furnace body (1) at equal angles. A cross slide (6) is movably installed between the four ground support frames (103). The four universal wheels (7) are respectively installed below the four brackets of the cross slide (6). A position adjustment mechanism is provided between the furnace body (1) and the cross slide (6) to drive the cross slide (6) to slide vertically between the four ground support frames (103) to realize the lifting adjustment of the universal wheels (7).

2. The movable heating furnace according to claim 1, wherein The position adjustment mechanism includes an external screw (301) rotatably installed in the middle of the lower end of the furnace body (1) and penetrating downward through the cross slide (6), an internal screw sleeve (601) fixed in the middle of the cross slide (6) and corresponding to the external screw (301), a driving part arranged between the furnace body (1) and the external screw (301), and a guiding part arranged between the furnace body (1) and the cross slide (6).

3. The movable heating furnace according to claim 2, wherein The driving part includes a driven sprocket (3) fixed to the upper end of the external screw (301) and fitting with the lower end face of the furnace body (1), a driving sprocket (4) rotatably installed on the outer edge part of the lower end of the furnace body (1), and a transmission chain (5) installed between the driven sprocket (3) and the driving sprocket (4).

4. The movable heating furnace according to claim 3, characterized in that, A vertically distributed crank (401) is rotatably installed on the outer edge part of the lower end of the driving sprocket (4).

5. The movable heating furnace according to claim 2, wherein The guiding part includes fixed screws (104) fixedly installed at equal angles at the lower end of the furnace body (1) and located outside the four corners of the cross slide (6), and an X-shaped guiding frame (8) detachably installed between the four fixed screws (104) and buckled with the cross slide (6).

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