Heat treatment device for forging bicycle crank

Abstract

The utility model relates to the technical field of heat treatment devices, in particular to a heat treatment device for forging a bicycle crank, which comprises a box body, a protective shell, a pipe body, a placing plate and a ventilation component, a protective shell is connected above the box body, and the interior of the box body is hollow and connected with a pipe body and a placement plate; the ventilation assembly is connected to the box body; the ventilation assembly comprises a ventilation pipe, the two sides of the outer wall of the ventilation pipe are connected with mounting blocks, and an inner pipe is connected into the ventilation pipe and is hollow and provided with a square opening. The ventilation pipe is connected with a splicing pipe, and connecting blocks are connected to the two sides of the outer wall of the splicing pipe and detachably connected with the mounting blocks. The splicing pipe is connected with an exhaust fan which is connected to the outer wall of the box body through a support. The inner pipe is connected with a control piece. According to the utility model, the exhaust fan is started to discharge heat in the box body, or the door body of the box body is opened to exchange air in the box body, so that the dissipation speed of heat in the box body is conveniently increased, the crank can be taken out of the box body, and the heat treatment efficiency of the crank is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment devices, in particular to a heat treatment device for forging a bicycle crank. Background Art

[0002] A crank is a bicycle component. The crank is the part of the connecting rod that can rotate 360 ​​degrees around its axis. Heat treatment is required during crank production. This involves heating the crank forging to a predetermined temperature, holding it for a set period, and then cooling it at a predetermined rate to improve the forging's internal structure and performance. This process aims to eliminate internal stress, prevent deformation during machining, and adjust the hardness to facilitate cutting. After heat treatment, the forging is cooled by air, water, or oil, depending on the material's requirements.

[0003] Chinese patent publication number CN219174544U discloses a forging heat treatment apparatus comprising a housing. The apparatus is characterized in that: the housing is provided with a U-shaped tube, with opposite sides of the U-shaped tube fixedly connected to a group of evenly spaced combustion nozzles. The middle portion of one side of the U-shaped tube is fixedly connected to an opening at one end of a rotary joint, one end of which passes through and is movably connected to the middle portion of one side of the housing. The upper end of the rotary joint is fixedly connected to an L-shaped rod, one end of which is fixedly connected to a side of the housing. This utility model relates to the field of forging heat treatment equipment, and more specifically, to forging heat treatment equipment.

[0004] The utility model is forging piece heat treatment equipment, which is beneficial to realizing heat treatment of forging pieces.

[0005] After the existing forging heat treatment device is used, it is not convenient to dissipate the internal heat and cool it down, which reduces the efficiency of taking the crank out of or putting it into the box, reduces the efficiency of the crank heat treatment, and reduces the functionality of the forging heat treatment device. Utility Model Content

[0006] In view of the problems existing in the background technology, a heat treatment device for forging a bicycle crank is proposed.

[0007] The utility model provides a heat treatment device for forging a bicycle crank, comprising: a box body, a protective shell, a tube body, a placement plate and a ventilation component;

[0008] The top of the box is connected to a protective shell, and the hollow interior of the box is connected to a tube body and a placement plate;

[0009] And the ventilation component is connected to the box body; the ventilation component includes a ventilation pipe, the outer walls of the ventilation pipe are connected to the mounting blocks on both sides and the inner pipe is connected inside, and the inner pipe is hollow inside with a square opening; the ventilation pipe is connected to the splicing pipe, and the outer walls of the splicing pipe are connected to the connecting blocks on both sides, and the connecting block and the mounting block are detachably connected; the splicing pipe is connected to the exhaust fan, and the exhaust fan is connected to the outer wall of the box body through a bracket; the inner pipe is connected to the control component.

[0010] Preferably, a circular opening is provided on one side of the box body for connecting to the ventilation pipe.

[0011] Preferably, the interior of the protective shell is connected to a partition and an electric telescopic rod, a driving end of the electric telescopic rod is connected to a block, the block is connected to a U-shaped plate a, and the U-shaped plate a is connected to a pin.

[0012] Preferably, six tube bodies are provided, which are connected to the U-shaped tubes in groups of two, the U-shaped tubes on both sides are connected to the middle U-shaped tube through connecting tubes, and the middle U-shaped tube is connected to the joint; the three U-shaped tubes are connected to the outer periphery of the sleeve, and the sleeve is connected to the outer wall of the box; the tube body is connected to the combustion nozzle.

[0013] Preferably, the placement plate is provided with a through hole and one end face is connected to a support block, the support block is connected to the U-shaped plate b, and the U-shaped plate b is movably connected to the pin.

[0014] Preferably, the feature is that the control part includes a control plate movably connected to the inner wall of the inner tube, the control plate is connected to the push block, the push block is connected to the electric push rod; the push block is connected to the slider below; the outer side of the box is connected to the support frame, the support frame is provided with a slide groove, and the inner wall of the slide groove is connected to the slider.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects:

[0016] The utility model provides a circular opening on one side of the box body, the circular opening is connected to the ventilation pipe, and the ventilation pipe is connected by the installation block and the connecting block. The connecting block connects the splicing pipe and the ventilation pipe, and then the interior of the ventilation pipe drives the inner pipe to be connected to the inner wall of the splicing pipe, and the splicing pipe is connected to the exhaust fan, and the exhaust fan is started to discharge the heat in the box body, or the box body door is opened and it is used to ventilate the box body, which conveniently increases the heat dissipation speed inside the box, improves the removal of the forging crank from the box body, conveniently improves the heat treatment work efficiency of the forging crank, and improves the functionality of the heat treatment device for forging. Then, the control panel is moved through the inner pipe, which is convenient for controlling the ventilation or heat discharge amount through the control panel, conveniently improving the functionality of the heat treatment device for forging bicycle cranks, and improving the practicality of the heat treatment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2This is a schematic diagram of the U-shaped tube structure in the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the ventilation component in the utility model.

[0020] Figure numerals: 1. Box body; 2. Protective shell; 201. Electric telescopic rod; 202. Block; 203. U-shaped plate a; 204. Pin; 3. Tube body; 301. U-shaped tube; 302. Connecting tube; 303. Joint; 304. Sleeve; 4. Placement plate; 401. Support block; 402. U-shaped plate b; 5. Ventilation assembly; 501. Ventilation tube; 502. Mounting block; 503. Inner tube; 504. Splicing tube; 505. Connecting block; 506. Exhaust fan; 507. Control panel; 508. Push block; 509. Electric push rod; 510. Slider; 511. Support frame. DETAILED DESCRIPTION

[0021] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0022] Example 1

[0023] like Figure 1 - Figure 3 As shown, the utility model proposes a heat treatment device for forging a bicycle crank, comprising: a box body 1, a protective shell 2, a tube body 3, a placement plate 4 and a ventilation component 5; the protective shell 2 is connected to the top of the box body 1, and the hollow interior of the box body 1 is connected to the tube body 3 and the placement plate 4; the ventilation component 5 is connected to the box body 1; the ventilation component 5 includes a ventilation pipe 501, the outer walls of the ventilation pipe 501 are connected to mounting blocks 502 on both sides and the interior is connected to an inner pipe 503, and the inner pipe 503 is hollow and has a square opening; the ventilation pipe 501 is connected to a splicing pipe 504, the outer walls of the splicing pipe 504 are connected to connecting blocks 505 on both sides, and the connecting block 505 and the mounting block 502 are detachably connected; the splicing pipe 504 is connected to an exhaust fan 506, and the exhaust fan 506 is connected to the outer wall of the box body 1 through a bracket; the inner pipe 503 is connected to a control component. The crank to be forged and heat treated is placed on the placement plate 4, and the two sides of the placement plate 4 are moved into the box 1 through the clamping plates, and then connected to the external fuel pipeline through the pipe body 3 components, and the external fuel pipeline is started, so that the external gas enters the box 1 through the pipe body 3 components, so as to achieve heat treatment processing of the crank; after the crank is heat treated, the heat in the box 1 is discharged through the ventilation component 5, or the door of the box 1 is opened, and the ventilation component 5 is used to ventilate the box 1, so as to facilitate the replacement of the low-temperature gas outside the box 1 and the high-temperature gas inside the box 1, so as to facilitate the cooling of the box 1, and conveniently take out the crank in the box 1, and place the crank to be processed therein, so as to conveniently improve the use effect of the heat treatment device for forging bicycle cranks.

[0024] Furthermore, a circular opening is provided on one side of the housing 1 for connection to the ventilation pipe 501. The opening facilitates the use of the ventilation assembly 5 to dissipate heat or ventilate the housing 1, facilitating the removal or insertion of the crank from the housing 1, preventing burns to personnel during the heat treatment process, and improving the safety of the heat treatment apparatus for forging bicycle cranks.

[0025] To further illustrate, the protective housing 2 is internally connected to a partition and to the electric telescopic rod 201. The driving end of the electric telescopic rod 201 is connected to a block 202, which is connected to a U-shaped plate a203, which is connected to a latch 204. One end of the latch 204 is larger than the U-shaped plate a203, which allows for positional restraint and prevents the latch 204 from passing under the U-shaped plate a203. The partition divides the interior of the protective housing 2 into an installation chamber for installing the electric telescopic rod 201 and a storage chamber for storing the latch 204. When the latch 204 is not in use, it can be conveniently stored there for easy access.

[0026] To further illustrate, the placement plate 4 is provided with a through hole and one end face is connected to the support block 401, which is connected to the U-shaped plate b402, and the U-shaped plate b402 is movably connected to the latch 204. The through hole facilitates the flow of heat from the through hole into the box body 1, thereby improving the thermal uniformity of the box body 1 and improving the heat treatment effect of the crank. The placement plate 4, the support block 401, and the U-shaped plate b402 are all movably connected in the box body 1. When the crank needs to be taken out of or put into the box body 1, the staff first moves the support block 401 and the placement plate 4 outward or inward through the U-shaped plate b402, so that the U-shaped plate b402 and the U-shaped plate a203 are opposite each other, and uses the latch 204 to control the U-shaped plate b402 and the U shaped plate a203, and then start the electric telescopic rod 201, the driving end of the electric telescopic rod 201 causes the block 202 to move, the block 202 drives the U-shaped plate a203, the latch 204 and the U-shaped plate b402, the U-shaped plate b402 drives the support block 401, the support block 401 drives the U-shaped plate b402, the U-shaped plate b402 is brought to the placement plate 4, the placement plate 4 moves outward or inward, so as to take out the crank inside the box 1 or conveniently place the crank inside the box 1, thereby conveniently improving the practicality of the heat treatment device.

[0027] To further illustrate, the control component includes a control plate 507 movably connected to the inner wall of inner tube 503. Control plate 507 is connected to a push block 508, which is connected to an electric push rod 509. A slider 510 is connected below push block 508. The outer side of housing 1 is connected to a support frame 511, which is provided with a slide groove, the inner wall of which is connected to slider 510. As control plate 507 moves, slider 510 moves synchronously along the slide groove, thereby facilitating stable movement of control plate 507 and improving the practicality of the components of ventilation assembly 5.

[0028] Example 2

[0029] like Figure 2 As shown, the present invention proposes a heat treatment device for forging a bicycle crank. Based on the above embodiment, this embodiment further describes in detail the specific components of the tube body 3 and the matching method.

[0030] To further illustrate, six tube bodies 3 are provided, connected in pairs to the U-shaped tube 301. The U-shaped tubes 301 on either side are connected to the middle U-shaped tube 301 via connecting tubes 302, and the middle U-shaped tube 301 is connected to the joint 303. The outer peripheries of the three U-shaped tubes 301 are connected to the sleeve 304, which is connected to the outer wall of the housing 1. The tube bodies 3 are connected to the combustion nozzle. The six tube bodies 3 are evenly distributed and connected within the housing 1. The tube bodies 3 are connected in pairs to the U-shaped tubes 301, and the three U-shaped tubes 301 are interconnected via connecting tubes 302. The joint 303 is connected to the external fuel pipeline. The external fuel pipeline is activated, and the crank forging is uniformly heat treated through the combustion nozzle.

[0031] The working principle of the present invention is as follows: after the crank casting is processed in the heat treatment device box 1, the box 1 door is opened and the exhaust fan 506 is started. The exhaust fan 506 is driven by the component motor to rotate the impeller to generate air flow, which is transported by the combined splicing pipe 504, the inner pipe 503 and the ventilation pipe 501 to achieve the purpose of discharge or ventilation, and conveniently discharge or ventilate the heat generated by the combustion in the box 1. The temperature in the box 1 is reduced, which makes it easy to take out the heat-treated crank casting from the box 1 and put it into the box 1. The crank casting to be processed is placed therein; the inner tube 503 has a square opening, and the control board 507 passes through the inner tube 503 and is connected to the interior of the square opening. By starting the electric push rod 509, the driving end of the electric push rod 509 moves the push block 508, and the push block 508 drives the control board 507 to move in the square opening. The control board 507 controls the opening and closing size of the square opening, which is convenient for heat discharge or ventilation in the box body 1, and is convenient to control and use according to needs, thereby conveniently improving the practicality of the heat treatment device for forging bicycle cranks.

[0032] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A heat treatment device for forging a bicycle crank, characterized in that: include: A box body (1); a protective shell (2) is connected to the top of the box body (1), and a tube body (3) and a placement plate (4) are connected to the hollow interior of the box body (1); And a ventilation assembly (5) connected to the box (1); the ventilation assembly (5) includes a ventilation pipe (501), the ventilation pipe (501) is connected to the mounting blocks (502) on both sides of the outer wall and is connected to the inner pipe (503) inside, and the inner pipe (503) is hollow inside and has a square opening; the ventilation pipe (501) is connected to the splicing pipe (504), the splicing pipe (504) is connected to the connecting blocks (505) on both sides of the outer wall, and the connecting blocks (505) and the mounting blocks (502) are detachably connected; the splicing pipe (504) is connected to the exhaust fan (506), and the exhaust fan (506) is connected to the outer wall of the box (1) through a bracket; the inner pipe (503) is connected to a control component.

2. A heat treatment device for forging a bicycle crank according to claim 1, characterized in that: A circular opening is provided on one side of the box body (1) for connecting to the ventilation pipe (501).

3. A heat treatment device for forging a bicycle crank according to claim 1 or 2, characterized in that: The protective shell (2) is internally connected to a partition and an electric telescopic rod (201); a driving end of the electric telescopic rod (201) is connected to a block (202); the block (202) is connected to a U-shaped plate a (203); and the U-shaped plate a (203) is connected to a latch (204).

4. A heat treatment device for forging a bicycle crank according to claim 3, characterized in that: Six tube bodies (3) are provided, and two of them are connected to the U-shaped tube (301) in a group. The U-shaped tubes (301) on both sides are connected to the middle U-shaped tube (301) through a connecting tube (302), and the middle U-shaped tube (301) is connected to the joint (303); the outer peripheries of the three U-shaped tubes (301) are connected to a sleeve (304), and the sleeve (304) is connected to the outer wall of the box (1); and the tube body (3) is connected to a combustion nozzle.

5. A heat treatment device for forging a bicycle crank according to claim 4, characterized in that: The placement plate (4) is provided with a through hole and one end surface is connected to a support block (401), the support block (401) is connected to a U-shaped plate b (402), and the U-shaped plate b (402) is movably connected to a latch (204).

6. A heat treatment device for forging a bicycle crank according to claim 1 or 5, characterized in that: The control component comprises a control panel (507) movably connected to the inner wall of the inner tube (503); the control panel (507) is connected to a push block (508); the push block (508) is connected to an electric push rod (509); a slider (510) is connected below the push block (508); the outer side of the box body (1) is connected to a support frame (511); the support frame (511) is provided with a slide groove, and the inner wall of the slide groove is connected to the slider (510).

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