A floating mechanism for crankshaft journal surface quenching

Abstract

The present invention discloses a floating mechanism for surface quenching a crankshaft journal, comprising a base, a first sprocket and a second sprocket rotatably connected to the base, a chain meshing and transmitting between the first and second sprockets, a saddle-shaped quenching inductor connected at one end thereof to swing or rise and fall with the chain, and a counterweight at the other end thereof. A guide plate bracket is provided on one side of the counterweight, the guide plate bracket having a first vertically extending limit hole formed therein, a first limit block connected to the counterweight slidably connected within the first limit hole, and a cylinder provided on the guide plate bracket for controlling the reciprocating movement of the first limit block within the first limit hole. A cooling mechanism is provided on the saddle-shaped quenching inductor, the cooling mechanism including a coolant delivery pipe. The floating mechanism features easy installation, high quenching quality, comprehensive overall functionality, and strong practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of induction quenching, and more particularly to a floating mechanism for crankshaft journal surface quenching. Background Art

[0002] The crankshaft journal surface is quenched by using a quenching sensor on the quenching equipment to enhance the hardness and strength of the shaft surface, thereby extending the service life of the entire crankshaft.

[0003] Most quenching sensors on the market for shaft and rod workpieces are copper tube structures connected in series to a circuit and bent into a spiral shape. When using this type of quenching sensor to implement heating and quenching on the crankshaft journal surface, the quenching sensor needs to be given active power so that it moves with the crankshaft to complete the quenching operation of the workpiece. The rotation of the crankshaft also needs to increase kinetic energy. If the two movements are not synchronized, the quenching quality will be reduced. However, since the two are input by two different power sources, there will inevitably be movement deviation. Therefore, the quenching quality cannot be guaranteed and the overall effect is poor. Accordingly, the present invention proposes a floating mechanism for crankshaft journal surface quenching. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a floating mechanism for crankshaft journal surface quenching, which has the characteristics of convenient installation and high quenching quality.

[0005] In order to solve the above technical problems, the purpose of the present invention is achieved as follows: the present invention involves a floating mechanism for crankshaft journal surface quenching, including a machine base, on which a first sprocket and a second sprocket are rotatably connected, and a chain is meshed and transmitted on the first sprocket and the second sprocket, one end of the chain is connected to a saddle-type quenching sensor that swings or rises and falls with the chain, and the other end is provided with a counterweight body, and a guide plate bracket is provided on one side of the counterweight body, and a first limit hole extending vertically up and down is provided on the guide plate bracket, and a first limit block connected to the counterweight body is slidably connected in the first limit hole, and a cylinder is provided on the guide plate bracket for controlling the first limit block to move back and forth in the first limit hole.

[0006] The present invention is further configured as follows: a cooling mechanism is provided on the saddle-shaped quenching inductor; and the cooling mechanism includes a cooling liquid delivery pipe.

[0007] The present invention is further configured as follows: it also includes a tightening mechanism arranged on the machine base; the tightening mechanism includes a tightening disk, which is rotatably connected to two tightening arms with an interval angle of 180°, and the tightening arms are provided with a tightening rod. The coolant delivery pipe is wrapped around and passes through the tightening rods on the two tightening arms. The tightening disk is provided with a second limiting hole extending along its circumference, and the second limiting hole is slidably connected to a second limiting block arranged on the tightening arm. The tightening disk is provided with a tension spring with one end connected to the tightening disk and the other end connected to the second limiting block.

[0008] The present invention is further configured as follows: the saddle-shaped quenching sensor includes an inductor bracket, and the inductor bracket is provided with a heating body which is a section of hollow metal tube bent into a semi-cylindrical shape.

[0009] The present invention is further configured as follows: a wear-resistant pad is provided on the sensor bracket.

[0010] The present invention is further configured as follows: the heating body is a semi-wrapped structure, the heating body is surrounded to form a heating zone connected to the outside world, the pipe mouth of the coolant delivery pipe faces the heating zone, and a mesh plate is provided between the pipe mouth of the coolant delivery pipe and the heating zone.

[0011] The present invention is further configured as follows: a linear slide rail extending vertically up and down is provided on the guide plate bracket, a linear slider is slidably connected to the linear slide rail, and the counterweight is provided on the linear slider.

[0012] The present invention is further configured as follows: a protective frame arranged on the guide plate bracket is provided below the counterweight body.

[0013] To sum up, the present invention has the following beneficial effects: the floating mechanism for crankshaft journal surface quenching involved in the present invention can be added to the quenching equipment, so that the saddle-shaped quenching sensor on the floating mechanism can be mounted on the crankshaft journal and passively move with the crankshaft, so that the two are synchronized, thereby improving the quenching quality, and the overall function is complete and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a partial structural schematic diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the main structure of the tightening mechanism of the present invention;

[0017] Figure 4 It is a rear view structural diagram of the tightening mechanism of the present invention;

[0018] Figure 5 This is a schematic diagram of the overall structure of a saddle-type quenching inductor according to the present invention;

[0019] Figure 6 It is a schematic diagram of the overall structure of the heating body of the present invention. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the preferred embodiments of the present invention are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for the purpose of further illustrating the features and advantages of the present invention, and are not intended to limit the patent claims of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0021] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0022] Example 1

[0023] See also Figure 1 and Figure 2 、 Figure 5 and Figure 6 As shown, the present embodiment involves a floating mechanism for crankshaft journal surface quenching, including a machine base (not shown in the figure), on which a first sprocket 1 and a second sprocket 2 are rotatably connected, and a chain 3 is meshed and transmitted on the first sprocket 1 and the second sprocket 2, one end of the chain 3 is connected to a saddle-type quenching sensor 4 that swings or rises and falls with the chain, and the other end is provided with a counterweight 5, and a guide plate bracket 6 is provided on one side of the counterweight 5, and a first limiting hole 7 extending vertically up and down is opened on the guide plate bracket 6, and a first limiting block 8 connected to the counterweight is slidably connected in the first limiting hole 7, and a cylinder 9 for controlling the first limiting block to move back and forth in the first limiting hole is provided on the guide plate bracket 6.

[0024] Furthermore, the saddle-shaped quenching sensor 4 includes a sensor bracket 41 , on which a heating body 42 is provided. The heating body 42 is formed by bending a section of a hollow metal tube into a semi-cylindrical shape.

[0025] Furthermore, a wear-resistant pad 43 is provided on the sensor bracket 41 .

[0026] Furthermore, the guide plate bracket 6 is provided with a linear slide rail 17 extending vertically up and down, and a linear slider 18 is slidably connected to the linear slide rail 17, and the counterweight 5 is provided on the linear slider 18.

[0027] Furthermore, a protective frame 19 provided on the guide plate bracket 6 is provided below the counterweight body 5 .

[0028] In this embodiment, the saddle-type quenching sensor 4 is straddled on the crankshaft journal that needs to complete journal surface quenching. When the crankshaft journal rotates, the saddle-type quenching sensor 4 follows. During this period, the cylinder 9 extends and contracts according to the set frequency, thereby dragging the counterweight 5, which is transmitted through the sprocket and chain, thereby realizing the following of the saddle-type quenching sensor 4.

[0029] The wear-resistant pad 43 is provided to serve as a liner to prevent the workpiece from contacting the heating body 42 and to maintain a suitable quenching distance between the workpiece and the heating body 42 .

[0030] The linear guide rail 17 and the linear slider 18 serve as a sliding guide for the counterweight 5 during its vertical up and down movement.

[0031] Among them, the provision of the protective frame 19 plays a role in preventing the counterweight 5 from falling and protecting it, thereby improving the safety of equipment use.

[0032] Example 2

[0033] See also Figure 3 and Figure 4 As shown, the present embodiment involves a floating mechanism for crankshaft journal surface quenching, which is further configured on the basis of embodiment 1, in which a cooling mechanism is provided on the saddle-shaped quenching sensor 4; the cooling mechanism includes a coolant delivery pipe 10.

[0034] Furthermore, it also includes a tightening mechanism arranged on the machine base; the tightening mechanism includes a tightening disc 11, and the tightening disc 11 is rotatably connected to two tightening arms 12 with an angle of 180° between them, and the tightening arms 12 are provided with a tightening rod 13. The coolant delivery pipe 10 is wrapped around and passes through the tightening rods 13 on the two tightening arms 12. The tightening disc 11 is provided with a second limiting hole 14 extending along its circumference, and the second limiting hole 14 is slidably connected to a second limiting block 15 arranged on the tightening arm 12. The tightening disc 11 is provided with a tension spring 16 with one end connected to the tightening disc and the other end connected to the second limiting block.

[0035] In this embodiment, the cooling mechanism requires the presence of a coolant delivery pipe 10. Since the saddle-shaped quenching inductor 4 moves with it, the coolant delivery pipe 10 also needs to follow the movement. The tightening mechanism prevents the coolant delivery pipe 10 from drooping.

[0036] The working principle of the tightening mechanism is as follows: when the saddle-type quenching sensor 4 moves downward or swings downward, the coolant delivery pipe 10 is pulled, pulling the tightening rod 13, causing the tightening arm 12 to rotate counterclockwise relative to the tightening disk 11, and the tension spring 16 is stretched, appropriately extending the effective length of the coolant delivery pipe 10; when the saddle-type quenching sensor 4 moves upward or swings upward, the tension on the coolant delivery pipe 10 is removed, and the tension spring 16 is reset, thereby driving the tightening arm 12 and the tightening rod 13 to reset (rotate clockwise), thereby shortening the effective length of the coolant delivery pipe 10, thereby preventing the coolant delivery pipe 10 from sagging.

[0037] The second limiting hole 14 cooperates with the second limiting block 15 to limit the rotation of the tightening arm 12 .

[0038] Example 3

[0039] See also Figures 1 to 6 As shown, the present embodiment involves a floating mechanism for crankshaft journal surface quenching, which is further configured on the basis of Example 2, wherein the heating body 42 is a semi-wrapped structure, the heating body 42 is surrounded to form a heating zone 44 connected to the outside, the pipe mouth of the coolant delivery pipe 10 faces the heating zone 44, and a mesh plate 45 is provided between the pipe mouth of the coolant delivery pipe 10 and the heating zone 44.

[0040] In this embodiment, a mesh plate 45 is added between the nozzle of the coolant delivery pipe 10 and the heating zone 44, so that the coolant sprayed from the nozzle of the coolant delivery pipe 10 can pass through the mesh plate 45 and be sprayed onto the workpiece located in the heating zone 44, and can also block solid particles generated by the friction between the workpiece and the wear-resistant pad 43 during rotation.

[0041] The floating mechanism for crankshaft journal surface quenching involved in the present invention can be installed on the quenching equipment, so that the saddle-shaped quenching sensor on the floating mechanism can be mounted on the crankshaft journal and passively move with the crankshaft, so that the two are synchronized, thereby improving the quenching quality, and the overall function is complete and practical.

[0042] Unless otherwise specified, in the present invention, if there are terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicating orientation or positional relationship, they are based on the orientation or positional relationship actually shown and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limiting this patent. For those skilled in the art, the specific meanings of the above terms can be understood in combination with the embodiments and according to specific circumstances.

[0043] Unless otherwise specified or limited, the terms "disposed," "connected," and "connected" in this disclosure should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections or indirect connections through an intermediary; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on the specific circumstances.

[0044] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A floating mechanism for crankshaft journal surface quenching, comprising a base, characterized in that: The machine base is rotatably connected to a first sprocket and a second sprocket, and a chain is meshed and transmitted on the first sprocket and the second sprocket, one end of the chain is connected to a saddle-type quenching sensor that swings or rises and falls with the chain, and the other end is provided with a counterweight body, a guide plate bracket is provided on one side of the counterweight body, a first limiting hole extending vertically up and down is opened on the guide plate bracket, a first limiting block connected to the counterweight body is slidably connected in the first limiting hole, and a cylinder for controlling the first limiting block to reciprocate in the first limiting hole is provided on the guide plate bracket; a cooling mechanism is provided on the saddle-type quenching sensor; the cooling mechanism includes a coolant delivery pipe; and also includes a tightening mechanism provided on the machine base; The tightening mechanism includes a tightening disc, which is rotatably connected to two tightening arms with an angle of 180 degrees between them, and a tightening rod is provided on the tightening arm. The coolant delivery pipe is wound around and passes through the tightening rods on the two tightening arms. The tightening disc is provided with a second limiting hole extending along its circumference, and a second limiting block provided on the tightening arm is slidably connected in the second limiting hole. The tightening disc is provided with a tension spring with one end connected to the tightening disc and the other end connected to the second limiting block. The guide plate bracket is provided with a linear slide rail extending vertically up and down, a linear slider is slidably connected to the linear slide rail, and the counterweight body is arranged on the linear slider.

2. The floating mechanism for crankshaft journal surface quenching according to claim 1, characterized in that: The saddle-shaped quenching inductor comprises an inductor bracket, on which a heating body formed by bending a section of a hollow metal tube into a semi-cylindrical shape is provided.

3. The floating mechanism for crankshaft journal surface quenching according to claim 2, characterized in that: The sensor bracket is provided with a wear-resistant pad.

4. The floating mechanism for crankshaft journal surface quenching according to claim 3, characterized in that: The heating body is a semi-wrapped structure, and the heating body is surrounded to form a heating zone connected to the outside world. The pipe opening of the coolant delivery pipe faces the heating zone, and a mesh plate is provided between the pipe opening of the coolant delivery pipe and the heating zone.

5. The floating mechanism for crankshaft journal surface quenching according to claim 1, characterized in that: A protective frame arranged on the guide plate bracket is provided below the counterweight body.

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