Crankshaft tempering tool

Abstract

The crankshaft tempering tool comprises a base and a supporting rod, the supporting rod is installed in the middle of the upper wall of the base, limiting mechanisms are installed on the two sides of the supporting rod in a sliding mode, the two limiting mechanisms can clamp an external crankshaft, and each limiting mechanism comprises a sliding groove, a clamping plate, a through hole, a connecting rod and a limiting block. Sliding grooves are formed in the left side and the right side of the upper end of the supporting rod, connecting rods are installed on the inner walls of the sliding grooves, through holes are formed in the side walls of the clamping plates, the connecting rods are inserted into the through holes, and limiting blocks are connected to the outer sides of the connecting rods in a sleeving mode. And in addition, a shielding mechanism is further arranged above the supporting rod, so that the shielding mechanism can shield the sliding groove, and the situation that external impurities enter the sliding groove, and adjustment of the clamping plate is affected is avoided.

Description

Technical Field

[0001] This patent relates to the field of crankshaft tempering technology, specifically a crankshaft tempering fixture. Background Technology

[0002] Low-temperature tempering of crankshafts involves heating the crankshaft to a certain temperature and holding it at that temperature for a period of time, then rapidly cooling it to room temperature, and finally heating the crankshaft to a lower temperature and holding it at that temperature for a certain period of time. This process causes changes in the internal structure of the crankshaft, thereby improving its hardness and toughness. Low-temperature tempering can effectively reduce the decrease in strength and hardness, ensuring the high strength and toughness of the crankshaft during operation and extending its service life.

[0003] Currently, crankshafts are typically placed on a fixture on a tempering furnace for support. However, the openings on the existing fixtures are all the same size, making them unsuitable for crankshafts of different diameters and resulting in poor applicability. Utility Model Content

[0004] The purpose of this patent is to provide a crankshaft tempering fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this patent provides the following technical solution: a crankshaft tempering fixture, comprising a base and a support rod, wherein the support rod is installed in the middle of the upper wall of the base, and a limiting mechanism is slidably installed on both sides of the support rod, and the two limiting mechanisms can clamp the external crankshaft;

[0006] The limiting mechanism includes a sliding groove, a clamping plate, a through hole, a connecting rod, and a limiting block. Sliding grooves are provided on both the left and right sides of the upper end of the support rod. A connecting rod is installed on the inner wall of the sliding groove. A through hole is provided on the side wall of the clamping plate. The connecting rod is inserted into the through hole. A limiting block is sleeved on the outer side of the connecting rod. The limiting block can fit against the side wall of the clamping plate.

[0007] Preferably, a blocking mechanism is installed at the upper end of the support rod, which can block the sliding groove and can fit against the side wall of the clamping plate.

[0008] Preferably, the shielding mechanism includes a cover, a insert plate, a spring, a top plate, and a clearance groove. The insert plate is installed in the middle of the lower wall of the cover, and a slot is opened in the middle of the upper wall of the support rod. The insert plate can be inserted into the slot. One end of a spring is installed on both the left and right sides of the insert plate, and a top plate is installed on the other end of the two springs. A clearance groove is opened on the side wall of the top plate, and the clamping plate can be inserted into the clearance groove.

[0009] Preferably, the outer wall of the connecting rod is provided with an annular groove, and the limiting block can be inserted into the annular groove.

[0010] Preferably, holes are provided at the four corners of the upper wall of the base, and positioning bolts are inserted into the holes. The positioning bolts can be screwed into the conveyor belt of the external tempering furnace.

[0011] Preferably, the sidewall of the clamping plate is provided with anti-slip teeth, and the cross-section of the anti-slip teeth is semi-circular.

[0012] Compared with existing technologies, the beneficial effects of this patent are:

[0013] This device uses two limiting mechanisms to clamp the crankshaft. The position of the clamping plate in the limiting mechanism can be adjusted to accommodate crankshafts of different specifications, thus improving the applicability of the device. In addition, a shielding mechanism is set above the support rod to shield the sliding groove and prevent external impurities from entering the sliding groove and affecting the adjustment of the clamping plate. Attached Figure Description

[0014] Fig. 1 This is a schematic diagram of the structure of this patent.

[0015] Fig. 2 This is a schematic diagram of the limiting mechanism structure of this patent.

[0016] Fig. 3 This is a schematic diagram of the shielding mechanism of this patent.

[0017] In the diagram: 1. Base, 2. Support rod, 3. Limiting mechanism, 31. Sliding groove, 32. Clamping plate, 33. Through hole, 34. Connecting rod, 35. Limiting block, 4. Covering mechanism, 41. Cover, 42. Insert plate, 43. Spring, 44. Top plate, 45. Leaving groove, 5. Slot, 6. Annular groove, 7. Hole, 8. Positioning bolt, 9. Anti-slip protrusion. Detailed Implementation

[0018] The technical solutions of this patent embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this patent, and not all of them. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0019] Please see Figs. 1-3 This patent provides a technical solution: a crankshaft tempering fixture, including a base 1 and a support rod 2. The support rod 2 is installed in the middle of the upper wall of the base 1, and the two sides of the support rod 2 are slidably installed with limiting mechanisms 3. The two limiting mechanisms 3 can clamp the external crankshaft.

[0020] The crankshaft placed on the support rod 2 can be limited by two limiting mechanisms 3, thereby preventing the crankshaft from falling. Since this device is installed on the conveyor belt of the external tempering furnace, it can be transferred into the furnace and the crankshaft placed above it under the drive of the conveyor belt for tempering treatment.

[0021] The limiting mechanism 3 includes a sliding groove 31, a clamping plate 32, a through hole 33, a connecting rod 34, and a limiting block 35. Sliding grooves 31 are provided on both the left and right sides of the upper end of the support rod 2. The connecting rod 34 is installed on the inner wall of the sliding groove 31. The side wall of the clamping plate 32 is provided with a through hole 33. The connecting rod 34 is inserted into the through hole 33. The limiting block 35 is sleeved on the outer side of the connecting rod 34. The limiting block 35 can fit against the side wall of the clamping plate 32.

[0022] When it is necessary to adjust the position of the two clamping plates 32, the limiting block 35 can be removed from the connecting rod 34 first, then the clamping plate 32 can be slid to the appropriate position, and then the limiting block 35 can be inserted into the annular groove 6 at the appropriate position to complete the adjustment of the position of the clamping plate 32.

[0023] All structures in this device are made of high-temperature resistant materials and will not deform due to the high temperature inside the furnace.

[0024] Specifically, a blocking mechanism 4 is installed at the upper end of the support rod 2. The blocking mechanism 4 can block the sliding groove 31 and can fit against the side wall of the clamping plate 32.

[0025] By setting the shielding mechanism 4, external impurities can be prevented from entering the sliding groove 31, thus avoiding any impact on the sliding of the clamping plate 32.

[0026] Specifically, the shielding mechanism 4 includes a cover 41, an insert plate 42, a spring 43, a top plate 44, and a clearance groove 45. The insert plate 42 is installed in the middle of the lower wall of the cover 41, and a slot 5 is opened in the middle of the upper wall of the support rod 2. The insert plate 42 can be inserted into the slot 5. One end of the spring 43 is installed on both the left and right sides of the insert plate 42, and the other end of the two springs 43 is installed with the top plate 44. The side wall of the top plate 44 is opened with a clearance groove 45, and the clamping plate 32 can be inserted into the clearance groove 45.

[0027] When the shielding mechanism 4 is installed on the support rod 2 through the cooperation between the insert plate 42 and the slot 5, the top plates 44 on both sides will be in contact with the side wall of the clamping plate 32 under the action of the spring 43, so that the clamping plate 32 is located in the relief groove 45, so that the top plate 44 shields the sliding groove 31, preventing external impurities from entering the sliding groove 31. At the same time, the top plate 44 will not interfere with the sliding of the clamping plate 32.

[0028] Specifically, the outer wall of the connecting rod 34 is provided with an annular groove 6, and the limiting block 35 can be inserted into the annular groove 6;

[0029] The ring groove 8 is provided with multiple ring grooves. When the limiting block 35 is inserted into the ring groove 6, the clamping plate 32 can be limited.

[0030] Specifically, holes 7 are provided at the four corners of the upper wall of the base 1, and positioning bolts 8 are inserted into the holes 7. The positioning bolts 8 can be screwed into the conveyor belt of the external tempering furnace.

[0031] Specifically, the sidewall of the clamping plate 32 is equipped with anti-slip serrations 9, and the cross-section of the anti-slip serrations 9 is semi-circular.

[0032] The anti-slip serrations 9 increase the friction between the clamping plate 32 and the external crankshaft, thereby improving the stability of the crankshaft when it is placed on the device.

[0033] Working principle: The operator first adjusts the position of the clamping plate 32 according to the diameter of the crankshaft end. First, remove the limiting block 35 from the connecting rod 34, then slide the clamping plate 32 to the appropriate position, and then insert the limiting block 35 into the annular groove 6 at the appropriate position to complete the adjustment of the position of the clamping plate 32.

[0034] Then the crankshaft can be placed between the two clamping plates 32, and the crankshaft can be limited by the clamping plates 32;

[0035] Then the conveyor belt of the external tempering furnace starts, slowly driving the device and the crankshaft placed above into the tempering furnace for tempering to improve the hardness and toughness of the crankshaft.

[0036] It will be apparent to those skilled in the art that this patent is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this patent. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this patent is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this patent. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A crankshaft tempering fixture, comprising a base (1) and a support rod (2), characterized in that: A support rod (2) is installed in the middle of the upper wall of the base (1), and a limiting mechanism (3) is slidably installed on both sides of the support rod (2). The two limiting mechanisms (3) can clamp the external crankshaft. The limiting mechanism (3) includes a sliding groove (31), a clamping plate (32), a through hole (33), a connecting rod (34), and a limiting block (35). The upper end of the support rod (2) has sliding grooves (31) on both the left and right sides. The inner wall of the sliding groove (31) is fitted with a connecting rod (34). The side wall of the clamping plate (32) has a through hole (33). The connecting rod (34) is inserted into the through hole (33). The outer side of the connecting rod (34) is fitted with a limiting block (35). The limiting block (35) can fit against the side wall of the clamping plate (32).

2. The crankshaft tempering fixture according to claim 1, characterized in that: The upper end of the support rod (2) is equipped with a shielding mechanism (4), which can shield the sliding groove (31) and can fit against the side wall of the clamping plate (32).

3. The crankshaft tempering fixture according to claim 2, characterized in that: The shielding mechanism (4) includes a cover (41), a insert plate (42), a spring (43), a top plate (44), and a clearance groove (45). The insert plate (42) is installed in the middle of the lower wall of the cover (41), and a slot (5) is opened in the middle of the upper wall of the support rod (2). The insert plate (42) can be inserted into the slot (5). One end of the spring (43) is installed on both the left and right sides of the insert plate (42), and the other end of the two springs (43) is installed with a top plate (44). The clearance groove (45) is opened on the side wall of the top plate (44), and the clamping plate (32) can be inserted into the clearance groove (45).

4. The crankshaft tempering fixture according to claim 1, characterized in that: The outer wall of the connecting rod (34) is provided with an annular groove (6), and the limiting block (35) can be inserted into the annular groove (6).

5. A crankshaft tempering fixture according to claim 1, characterized in that: Holes (7) are provided at the four corners of the upper wall of the base (1). Positioning bolts (8) are inserted into the holes (7) and can be screwed into the conveyor belt of the external tempering furnace.

6. A crankshaft tempering fixture according to claim 1, characterized in that: The sidewall of the clamping plate (32) is equipped with anti-slip teeth (9), and the cross-section of the anti-slip teeth (9) is semi-circular.

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