Rapid quenching device for heat treatment of piston rod

Abstract

The utility model relates to the field of heat treatment of piston rods, in particular to a rapid quenching device for heat treatment of piston rods, a top plate is fixedly arranged above a quenching device body through a supporting column, a hydraulic rod assembly is fixedly mounted on the top plate, and an upper limiting rod is vertically and downwards mounted at the top extension end of the hydraulic rod assembly in a rotating manner; a lower limiting rod is assembled at the bottom of the upper limiting rod, a heating ring assembly and a spray quenching assembly are fixedly arranged on the quenching device body and located on the outer side of the lower limiting rod, and the heating ring assembly is located above the spray quenching assembly. According to the utility model, the piston rod can be stably clamped through the matched arrangement of the upper limiting rod, the lower limiting rod and the limiting ring, and the piston rod can move up and down through the matched arrangement of the hydraulic rod assembly and the spring, so that the piston rod can move between the heating ring assembly and the spray quenching assembly; the clamping mode is stable, and the piston rod is not prone to deformation in the heat treatment process.

Description

Technical Field

[0001] The utility model relates to the technical field of piston rod heat treatment, in particular to a rapid quenching device for piston rod heat treatment. Background Art

[0002] The piston rod is a connecting component that supports the piston to do work. It is mostly used in oil cylinders and pneumatic cylinder motion actuators. It is a moving component that moves frequently and has high technical requirements.

[0003] Heat treatment quenching of piston rod is an important process, which aims to improve the hardness, strength, wear resistance and fatigue resistance of piston rod. After heat treatment processes such as quenching and tempering, piston rod can obtain good comprehensive mechanical properties, such as high strength, high hardness, high toughness, etc. This enables piston rod to maintain stable performance in various complex working environments.

[0004] During the heat treatment and quenching process of the piston rod, a clamp is required to clamp the piston rod. However, due to the high temperature during the heat treatment, when the clamp is used to apply a large force to both ends of the piston rod, the piston rod is easily squeezed and deformed, thus affecting the heat treatment quality of the piston rod. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a rapid quenching device for heat treatment of a piston rod.

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

[0007] A rapid quenching device for heat treatment of piston rods comprises a quenching device body, a top plate is fixedly arranged above the quenching device body via a support column, a hydraulic rod assembly is fixedly installed on the top plate, an upper limit rod is rotatably installed on the top extending end of the hydraulic rod assembly vertically downward; a lower limit rod is assembled at the bottom of the upper limit rod, a heating ring assembly and a spray quenching assembly are fixedly arranged on the quenching device body and located outside the lower limit rod, and the heating ring assembly is located above the spray quenching assembly.

[0008] In addition, a preferred structure is that a water collecting pool is opened downward from the top of the quenching device body, a partition is provided at the bottom of the water collecting pool, and an adjustment chamber is opened inside the quenching device body below the partition.

[0009] In addition, a preferred structure is that movable plates are movably arranged at the upper and lower parts of the adjustment chamber, a driving motor is installed on the top of the movable plates, and guide columns are vertically arranged at the corners of the movable plates.

[0010] In addition, a preferred structure is that the lower limit rod passes through the partition and extends into the adjustment chamber, and the lower limit rod is drivingly connected to the output shaft of the drive motor.

[0011] In addition, a preferred structure is that a plurality of springs are vertically arranged downward at the bottom of the movable plate, and the bottoms of the springs are all connected to the bottom wall of the regulating chamber.

[0012] In addition, a preferred structure is that a key is fixedly provided on the top of the lower limit rod, and a key slot is provided at the bottom of the upper limit rod corresponding to the key.

[0013] In addition, a preferred structure is that a bearing seat is installed at the bottom of the top extending end, the upper limit rod is installed on the top extending end through the bearing seat, and a limit ring is fixedly sleeved on the upper limit rod and the lower limit rod.

[0014] The beneficial effects of the utility model are as follows: the piston rod can be stably clamped through the matching arrangement between the upper limit rod, the lower limit rod and the limit ring, and the up and down movement of the piston rod can be realized through the matching arrangement between the hydraulic rod assembly and the spring, so that the piston rod can be moved between the heating ring assembly and the quenching assembly. This clamping method is relatively stable and is not easy to cause the piston rod to deform during the heat treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a rapid quenching device for heat treatment of a piston rod proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of a rapid quenching device for heat treatment of a piston rod proposed by the utility model;

[0017] Figure 3 for Figure 2 A schematic diagram of the structure when the middle upper limit rod and the lower limit rod move downward;

[0018] Figure 4 The utility model discloses a schematic diagram of the split structure of an upper limit rod and a lower limit rod of a rapid quenching device for heat treatment of a piston rod.

[0019] In the figure: 1 quenching device body, 11 heating ring assembly, 12 spray quenching assembly, 13 water collecting tank, 14 partition, 15 adjustment chamber, 2 top plate, 21 hydraulic rod assembly, 22 top extension end, 23 bearing seat, 3 upper limit rod, 31 keyway, 4 lower limit rod, 41 key, 5 limit ring, 6 movable plate, 61 drive motor, 7 spring, 8 guide column. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-4 A rapid quenching device for heat treatment of a piston rod comprises a quenching device body 1, a top plate 2 is fixedly arranged above the quenching device body 1 through a support column, a hydraulic rod assembly 21 is fixedly installed on the top plate 2, and an upper limit rod 3 is vertically and rotatably installed on the top extension end 22 of the hydraulic rod assembly 21. A lower limit rod 4 is assembled at the bottom of the upper limit rod 3, and a heating ring assembly 11 and a spray quenching assembly 12 are fixedly arranged on the outer side of the lower limit rod 4 on the quenching device body 1, and the heating ring assembly 11 is located above the spray quenching assembly 12. The piston rod can be heated by the heating ring assembly 11, and the water flow sprayed by the spray quenching assembly 12 after the heating is completed can realize the rapid cooling of the piston rod. It is also worth noting that the specific structure and working mode of the heating ring assembly 11 and the spray quenching assembly 12 are both existing technologies currently disclosed on the market, and they do not belong to the main technical features to be solved in the present technical solution, so they are not elaborated in the present utility model.

[0022] A water collecting pool 13 is provided downwardly from the top of the quenching device body 1 , a partition 14 is provided at the bottom of the water collecting pool 13 , and an adjusting chamber 15 is provided below the partition 14 inside the quenching device body 1 .

[0023] Among them, a movable plate 6 is movably arranged up and down in the adjustment chamber 15, a driving motor 61 is installed on the top of the movable plate 6, and guide columns 8 are vertically arranged at the corners of the movable plate 6. Through the arrangement of the guide columns 8, it can be ensured that the movable plate 6 keeps moving in a straight line when moving up and down.

[0024] The lower limit rod 4 extends through the partition 14 into the regulating chamber 15, and the lower limit rod 4 is in driving connection with the output shaft of the driving motor 61. A sealing sleeve is provided between the lower limit rod 4 and the partition 14, so as to ensure that the water flow in the water collection tank 13 will not enter the regulating chamber 15 through the partition 14.

[0025] Among them, a plurality of springs 7 are vertically arranged downward at the bottom of the movable plate 6, and the bottoms of the springs 7 are all connected to the bottom wall of the adjustment chamber 15. The movable plate 6 can be pushed up by the arrangement of the springs 7.

[0026] Among them, the top of the lower limit rod 4 is fixedly provided with a key 41, and the bottom of the upper limit rod 3 is adapted to open a key slot 31 corresponding to the key 41. Through the adaptation setting between the key 41 and the key slot 31, the upper limit rod 3 and the limit rod 4 can be rotated synchronously.

[0027] Among them, a bearing seat 23 is installed at the bottom of the top extension end 22, the upper limit rod 3 is installed on the top extension end 22 through the bearing seat 23, and the upper limit rod 3 and the lower limit rod 4 are both fixedly sleeved with a limit ring 5. The distance between the two limit rings 5 ​​is slightly smaller than the height of the piston rod, and the limit rings 5 ​​are all paved with a heat-resistant anti-skid layer.

[0028] In this embodiment, when the user needs to perform heat treatment on the piston rod, the hydraulic rod assembly 21 can be used to retract the top extension end 22 upward, and the upper limit rod 3 and the lower limit rod 4 can be separated. The user can insert the piston rod into the lower limit rod 4. After the user completes the insertion of the piston rod, the top extension end 22 is controlled to extend downward, so as to reconnect the upper limit rod 3 and the lower limit rod 4. And through the adaptation setting between the key 41 and the key slot 31, when the lower limit rod 4 is rotated by the drive motor 61, the upper limit rod 3 and the lower limit rod 4 can be rotated synchronously.

[0029] Furthermore, after the piston rod is installed, the piston rod can be clamped by the limiting rings 5 ​​on the upper limiting rod 3 and the lower limiting rod 4. The spacing between the limiting rings 5 ​​on both sides is 0.1-0.3 cm smaller than the height of the piston rod, so that the limiting rings 5 ​​on both sides can clamp the piston rod just right. (That is, it can be clamped stably without causing the piston rod to deform during heat treatment.)

[0030] Furthermore, after the piston rod is heated by the heating ring assembly 11, the hydraulic rod assembly 21 can control the top extension end to move downward, so that the upper limit rod 3, the lower limit rod 4 and the piston rod are moved downward to between the quenching assembly 12 for quenching. When the upper limit rod 3 and the lower limit rod 4 move downward, the movable plate 6 also moves downward and compresses the spring 7. After the quenching is completed and the top extension end 22 is retracted, the lower limit rod 4 automatically moves upward and resets due to the elastic force of the spring 7.

[0031] In the utility model, the piston rod can be stably clamped through the matching arrangement between the upper limit rod 3, the lower limit rod 4 and the limit ring 5, and the up and down movement of the piston rod can be realized through the matching arrangement between the hydraulic rod assembly 21 and the spring 7, so that the piston rod can be moved between the heating ring assembly 11 and the quenching assembly 12. This clamping method is relatively stable and is not easy to cause the piston rod to deform during the heat treatment process.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rapid quenching device for heat treatment of a piston rod, comprising a quenching device body (1), characterized in that: A top plate (2) is fixedly arranged above the quenching device body (1) via a support column, a hydraulic rod assembly (21) is fixedly mounted on the top plate (2), and an upper limit rod (3) is rotatably mounted on the top extension end (22) of the hydraulic rod assembly (21) which is vertically downward; The bottom of the upper limit rod (3) is equipped with a lower limit rod (4), and a heating ring assembly (11) and a spray quenching assembly (12) are fixedly arranged on the quenching device body (1) outside the lower limit rod (4), and the heating ring assembly (11) is located above the spray quenching assembly (12).

2. A rapid quenching device for heat treatment of a piston rod according to claim 1, characterized in that: A water collecting pool (13) is provided downwardly at the top of the quenching device body (1), a partition (14) is provided at the bottom of the water collecting pool (13), and an adjusting chamber (15) is provided inside the quenching device body (1) below the partition (14).

3. A rapid quenching device for heat treatment of a piston rod according to claim 2, characterized in that: A movable plate (6) is movably arranged upward and downward in the regulating chamber (15), a driving motor (61) is installed on the top of the movable plate (6), and guide columns (8) are vertically arranged at the corners of the movable plate (6).

4. A rapid quenching device for heat treatment of a piston rod according to claim 3, characterized in that: The lower limit rod (4) passes through the partition (14) and extends into the adjustment chamber (15), and the lower limit rod (4) is drivingly connected to the output shaft of the drive motor (61).

5. A rapid quenching device for heat treatment of a piston rod according to claim 4, characterized in that: A plurality of springs (7) are vertically arranged downward at the bottom of the movable plate (6), and the bottoms of the springs (7) are all connected to the bottom wall of the regulating chamber (15).

6. A rapid quenching device for heat treatment of a piston rod according to claim 1, characterized in that: A key (41) is fixedly provided on the top of the lower limiting rod (4), and a key slot (31) is adapted to be opened at the bottom of the upper limiting rod (3) corresponding to the key (41).

7. A rapid quenching device for heat treatment of a piston rod according to claim 6, characterized in that: A bearing seat (23) is installed at the bottom of the top extension end (22), the upper limit rod (3) is installed on the top extension end (22) through the bearing seat (23), and a limit ring (5) is fixedly sleeved on the upper limit rod (3) and the lower limit rod (4).

Images