A high-strength piston rod

Abstract

The utility model discloses a high-strength piston rod, which relates to the technical field of piston rods, including a main rod body, both ends of the main rod body are fixedly installed with mounting sleeves, the interior of the mounting sleeves are plugged with mounting rods, and the top of the mounting rod located at the top is fixedly installed with a connecting plate. The utility model adopts the above structure, inserts the plug rod into the mounting sleeve, presses the adjustment ring to shrink the limit spring, moves the hanger and the hook outward, rotates the hanger to be hung on the limit frame, loosens the adjustment ring spring reset, pushes the slider to slide inward to assist in pulling the hanger and the hook to stably hang the inner displacement, and uses the spring telescopic resistance to stably connect the hook and the limit frame to clamp the mounting rod, which can quickly install the working head and the connecting plate. When removing, press the adjustment ring to shrink the spring, move the slider inward to squeeze the hanger and the hook, and loosen it after flipping, so that the mounting rod can be removed, so that the device can quickly disassemble the mounting rod, making the disassembly and assembly of the working head and the connecting plate more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of piston rods, in particular to a high-strength piston rod. Background Art

[0002] The piston rod is a key component used in reciprocating actuators. It is usually a slender cylindrical rod. The piston rod is mainly responsible for transmitting force and motion. One end of the piston rod is connected to the piston, and the other end is connected to other mechanical parts. In hydraulic cylinders, air cylinders and other devices, the piston rod will reciprocate under pressure to achieve actions such as pushing, stretching, and compressing, successfully converting hydraulic energy or air pressure energy into mechanical energy.

[0003] The Chinese patent with the publication number "CN215058593U" discloses a high-strength anti-bending piston rod, which covers a piston rod body, a mounting rod is installed at the lower end of the piston rod body, a piston rod head is arranged at the upper end of the piston rod body, a pull plate is welded at the upper end of the piston rod head, a mounting plug rod is welded at the upper end of the mounting rod, a lower stopper is welded at the lower end of the mounting rod, a piston rod mounting groove is provided at the position of the lower end of the mounting rod near the lower stopper, an inner rod is arranged inside the piston rod body, an outer groove is provided on the outer surface of the mounting plug rod, an inner protrusion is welded inside the inner rod, a pulling hole is provided on the outer surface of the pull plate, and an inner threaded opening is provided inside the piston rod head. The utility model is equipped with a special-shaped hollow The inner rod of the structure and the outer rod formed by forging are provided with a semi-cylindrical protrusion on the inner surface of the hollow inner rod. The device belongs to a split structure. However, during use, although the above device can disassemble and assemble the piston rod more conveniently, in specific application, it is mainly assisted by bolts and threaded connections for installation during use. During long-term use, the position of the screws is extremely prone to rust or clogging by dust and impurities, which makes it difficult to rotate and disassemble. At the same time, the screw disassembly itself requires special tools. It can be seen that there are certain defects and shortcomings in its use, and the overall disassembly and assembly are relatively complicated and inconvenient, so it needs to be improved. Utility Model Content

[0004] In view of the problems mentioned in the background technology, the purpose of the utility model is to provide a high-strength piston rod to solve the problems raised in the background technology.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A high-strength piston rod, comprising a main rod body, both ends of the main rod body are fixedly installed with mounting sleeves, the interior of the mounting sleeves are plugged with mounting rods, the top of the mounting rod located at the top is fixedly installed with a connecting plate, the bottom of the mounting rod located at the bottom is fixedly installed with a working head, the outer side of the mounting sleeve is evenly spaced with a clamping mechanism, the mounting rod is installed on the inner side of the mounting sleeve through the clamping mechanism, and the outer surface of the main rod body is fixedly connected with a composite support sleeve;

[0007] The clamping mechanism includes a slide groove and a limit frame. The slide grooves are arranged in a ring shape with equal intervals and are opened on the outside of the mounting sleeve. An elastic component is movably installed inside the slide groove. A hanging frame is hinged on the outside of the elastic component. A hook is fixedly connected to the outer end of the hanging frame. The limit frame is arranged in a ring shape with equal intervals and is fixedly connected to the outside of the mounting rod. The hook and the limit frame are hung on each other.

[0008] As a preferred technical solution, the elastic component includes a slider, which is slidably connected to the inner side of the slide groove, a limit spring is fixedly installed on the bottom of the slider, the bottom of the limit spring is fixedly connected to the bottom of the slide groove, an articulated frame is fixedly installed on the outer side of the slider, the hanger is hinged to the outer side of the articulated frame, a connecting shaft is fixedly installed on the outer side of the slider, and an adjustment ring is fixedly connected to the outer side of the connecting shaft.

[0009] As a preferred technical solution, the cross-sectional shape of the slider is set in a convex shape, and the cross-sectional shape of the slide groove is also set in a convex shape.

[0010] As a preferred technical solution, the overall cross-sectional shape of the inner cavity of the mounting sleeve is a regular hexagon, and the overall cross-sectional shape of the mounting rod is also a regular hexagon.

[0011] As a preferred technical solution, a wear-resistant gasket is fixedly connected to the outer surface of the sliding block, and a wear-resistant gasket is also fixedly connected to the inner wall of the sliding groove.

[0012] As a preferred technical solution, a first connecting hole is formed on the outer side of the connecting plate, and a second connecting hole is formed on the inner end of the connecting plate close to the mounting rod.

[0013] As a preferred technical solution, the overall cross-sectional shape of the working head is T-shaped, and the upper end of the working head is conical.

[0014] As an optimal technical solution, the composite supporting sleeve includes a supporting alloy inner layer, which is arranged at the innermost part of the composite supporting sleeve, the outer side of the supporting alloy inner layer is fixedly connected to a light alloy middle layer, the outer side of the light alloy middle layer is fixedly connected to a heat-resistant alloy outer layer, and the outer side of the heat-resistant alloy outer layer is fixedly connected to a wear-resistant alloy surface layer.

[0015] As a preferred technical solution, the inner layer of the supporting alloy is set as a tungsten alloy layer, and the middle layer of the light alloy is set as a titanium alloy layer.

[0016] As a preferred technical solution, the heat-resistant alloy outer layer is set as a nickel-based alloy layer, and the wear-resistant alloy surface layer is set as a chromium-molybdenum steel layer.

[0017] In summary, the utility model mainly has the following beneficial effects:

[0018] First, by setting a clamping mechanism, during use, the insertion rod is inserted into the installation sleeve, the adjusting ring is pressed to shrink the limit spring, the hanger and the hook are moved outward, the hanger is rotated to be hung on the limit frame, the adjusting ring is loosened to reset the spring, and the slider is pushed to slide inward to assist in pulling the hanger and the hook to make the inner side displacement stably hung, and the hook is stably connected to the limit frame by means of the spring expansion and contraction, so as to clamp the installation rod, and the working head and the connecting plate can be quickly installed. When removing, the adjusting ring is pressed to shrink the spring, and the slider is moved inward to squeeze the hanger and the hook, and it is loosened after flipping over, and the installation rod can be removed, so that the device can quickly disassemble the installation rod, making the disassembly and assembly of the working head and the connecting plate more convenient;

[0019] Second, the composite support sleeve is installed on the outer surface of the main rod body, and each layer has a unique function. The tungsten alloy inner layer provides high strength and hardness support, so that the piston rod can better bear the force and ensure stability; the titanium alloy middle layer makes the whole lighter and facilitates operation; the nickel-based alloy outer layer brings good heat resistance, remains stable at high temperatures, and extends the service life; the chromium-molybdenum steel surface layer ensures excellent wear resistance, reduces wear and cost. These characteristics enable the piston rod to maintain a good condition for a long time, improve system reliability and efficiency, and the advantages of each layer of material cooperate with each other, so that the composite support sleeve brings many benefits to the piston rod, so that it can better adapt to various working environments and working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the utility model in a state where the mounting rod is removed;

[0022] Figure 3 This is a schematic diagram of the top view of the clamping mechanism of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the clamping mechanism of the utility model when viewed from above;

[0024] Figure 5 It is a schematic diagram of the overall cross-sectional structure of the composite supporting sleeve of the utility model.

[0025] Figure numerals: 1. main rod body; 2. mounting sleeve; 3. mounting rod; 4. connecting plate; 5. working head; 6. clamping mechanism; 61. slide groove; 62. limit frame; 63. elastic component; 631. slider; 632. hinged frame; 633. connecting shaft; 634. adjusting ring; 635. limit spring; 64. hanging bracket; 65. hook; 7. composite supporting sleeve; 71. supporting alloy inner layer; 72. light alloy middle layer; 73. heat-resistant alloy outer layer; 74. wear-resistant alloy surface layer; 8. first connecting hole; 9. second connecting hole. DETAILED DESCRIPTION

[0026] Example

[0027] refer to Figures 1 to 5 A high-strength piston rod of this embodiment includes a main rod body 1, both ends of the main rod body 1 are fixedly installed with mounting sleeves 2, the inside of the mounting sleeves 2 are plugged with mounting rods 3, the top of the mounting rod 3 located at the top is fixedly installed with a connecting plate 4, the bottom of the mounting rod 3 located at the bottom is fixedly installed with a working head 5, the outside of the mounting sleeve 2 is evenly spaced with a clamping mechanism 6, the mounting rod 3 is installed on the inner side of the mounting sleeve 2 through the clamping mechanism 6, and the outer surface of the main rod body 1 is fixedly connected with a composite support sleeve 7;

[0028] The clamping mechanism 6 includes a slide 61 and a limit frame 62. The slide 61 is arranged in a ring at equal intervals and is opened on the outside of the installation sleeve 2. An elastic component 63 is movably installed inside the slide 61. A hanger 64 is hinged on the outside of the elastic component 63. A hook 65 is fixedly connected to the outer end of the hanger 64. The limit frame 62 is arranged in a ring at equal intervals and is fixedly connected to the outside of the installation rod 3. The hook 65 and the limit frame 62 are hung with each other. Through the cooperation of the installation sleeve 2 and the clamping mechanism 6, the installation rod 3 can be conveniently and stably installed and fixed, which is convenient for the working head 5 and The connection of the connecting plate 4 improves the overall installation efficiency and reliability. Secondly, the composite supporting sleeve 7 enhances the strength, heat resistance, wear resistance and other properties of the main rod body 1, so that it can better adapt to various working conditions and extend its service life. Furthermore, the clamping mechanism 6 is cleverly designed, and the synergistic effect of the slide groove 61, elastic component 63, bracket 64 and hook 65 is utilized to achieve rapid disassembly and assembly, and the hanging is stable and reliable. Finally, the overall structure is compact, and the various components cooperate well with each other, which improves the performance and practicality of the piston rod during use.

[0029] refer to Figure 2-Figure 4The elastic component 63 includes a slider 631, which is slidably connected to the inner side of the slide groove 61. A limit spring 635 is fixedly installed at the bottom of the slider 631. The bottom of the limit spring 635 is fixedly connected to the bottom of the slide groove 61. A hinge frame 632 is fixedly installed on the outer side of the slider 631. The hanger 64 is hinged to the outer side of the hinge frame 632. A connecting shaft 633 is fixedly installed on the outer side of the slider 631. An adjusting ring 634 is fixedly connected to the outer side of the connecting shaft 633. Through the plug-in cooperation between the mounting sleeve 2 and the mounting rod 3 and the setting of the clamping mechanism 6, a stable connection between the mounting rod 3 and the mounting sleeve 2 is achieved, which facilitates the installation of the working head 5 and the connecting plate 4, and the sliding of the clamping mechanism 6 The structures such as the groove 61, the elastic component 63, the bracket 64 and the hook 65 cooperate with each other, making the installation and disassembly very convenient and efficient. Secondly, the composite support sleeve 7 enhances the performance of the main rod body 1, so that the piston rod has excellent performance in terms of strength, heat resistance, wear resistance, etc., and can better cope with various complex working conditions and extend the service life. Furthermore, the design of the clamping mechanism 6 is ingenious, and the annularly arranged slide groove 61 and the limit frame 62 ensure the stability and uniformity of the connection. The elastic component 63 provides a certain elastic buffer, making the entire structure more reliable during use. In short, this piston rod design has outstanding advantages in connection stability, operation convenience, performance reliability and other aspects.

[0030] refer to Figure 3-Figure 4 The cross-sectional shape of the slider 631 is set in a convex shape, and the cross-sectional shape of the slide groove 61 is also set in a convex shape. The slider 631 with a convex cross-sectional design matches the slide groove 61, ensuring that the slider 631 slides stably and accurately in the slide groove 61, making the operation of the card-mounting mechanism 6 more reliable and able to firmly fix the installation rod 3. This unique design effectively prevents the slider 631 from accidentally escaping from the slide groove 61, enhancing the integrity and safety of the structure. The convex structure provides a clear guide for the card-mounting operation, making the installation and disassembly process smoother and more orderly, further improving the stability and durability of the card-mounting mechanism 6, and maintaining good performance during long-term use, so that the piston rod as a whole can better withstand various forces and pressures during work, and at the same time, it is also beneficial to improve the adaptability and flexibility of the device, and can cope with different working scenarios and needs.

[0031] refer to Figure 3-Figure 4The overall cross-sectional shape of the inner cavity of the mounting sleeve 2 is a regular hexagon, and the overall cross-sectional shape of the mounting rod 3 is also a regular hexagon. The mounting sleeve 2 and the mounting rod 3 with regular hexagonal cross-sectional shapes match each other, so that the mounting rod 3 has good positioning and guiding properties when inserted into the mounting sleeve 2, which can ensure the accuracy and stability of the installation. This design effectively prevents the mounting rod 3 from shaking and rotating in the mounting sleeve 2, and increases the reliability of the connection. The regular hexagonal shape provides a larger contact area, further enhances the connection strength, and can better transmit force and withstand loads. At the same time, such a design is also conducive to improving the stability and balance of the overall structure of the piston rod, and can maintain a good state during work. Moreover, this unique shape design makes the installation and disassembly process relatively simple, and the operation is more convenient and quick. Furthermore, it enhances the ability of the piston rod to adapt to different working conditions, and can perform well in both static and dynamic working environments.

[0032] refer to Figure 3-Figure 4 The outer surface of the slider 631 is fixedly connected with a wear-resistant gasket, and the inner wall of the slide groove 61 is also fixedly connected with a wear-resistant gasket. The wear-resistant gaskets arranged in the slider 631 and the slide groove 61 reduce the wear between the slider 631 and the slide groove 61, extend the service life of the clamping mechanism 6, and ensure that it can work stably for a long time. Secondly, the wear-resistant gasket effectively reduces the friction coefficient, so that the movement of the slider 631 in the slide groove 61 is smoother, thereby making the installation and disassembly operations more convenient and efficient. Moreover, this design enhances the durability of the entire structure, and can maintain good performance even after long-term and frequent use. It can effectively resist the adverse effects of wear, so that the piston rod can operate reliably under various working conditions. In addition, the wear-resistant gasket can also reduce the heat and noise generated by friction to a certain extent, and improve the working environment.

[0033] refer to Figure 1-Figure 2 A first connecting hole 8 is provided on the outer side of the connecting plate 4, and a second connecting hole 9 is provided on the inner end of the connecting plate 4 near the mounting rod 3. On the one hand, the first connecting hole 8 on the outer side of the connecting plate 4 can be used for flexible and diverse connections with other external components, which increases the adaptability and extensibility of the piston rod in practical applications and can meet the connection requirements in different scenarios. On the other hand, the second connecting hole 9 at the inner end cooperates with the mounting rod 3 to further strengthen the connection stability between the connecting plate 4 and the mounting rod 3, ensuring the effectiveness and reliability of force transmission during work. Such a design enables the connecting plate 4 to achieve convenient connection with the outside and ensure that it is closely combined with the main part of the piston rod, thereby enhancing the role and value of the entire piston rod device in the system, so that the piston rod can better adapt to complex and changeable working environments and connection requirements.

[0034] refer to Figure 1-Figure 3The overall cross-sectional shape of the working head 5 is T-shaped, and the upper end of the working head 5 is conical. The T-shaped cross-sectional design of the working head 5 enables the working head 5 to have better stability and load-bearing capacity, and can play a better role in the work. The conical setting of the upper end, on the one hand, is conducive to reducing the resistance during work, so that the piston rod can run more smoothly; on the other hand, the conical shape also enables the working head 5 to be more accurately positioned and acted when contacting or operating with other parts, thereby improving the accuracy and efficiency of the work. In addition, this unique shape design also enhances the strength and durability of the working head 5, so that it can adapt to various complex and high-intensity working environments and extend the service life of the piston rod.

[0035] refer to Figure 4 The composite support sleeve 7 includes a support alloy inner layer 71, which is arranged at the innermost part of the composite support sleeve 7. The outer part of the support alloy inner layer 71 is fixedly connected with a light alloy middle layer 72, the outer part of the light alloy middle layer 72 is fixedly connected with a heat-resistant alloy outer layer 73, and the outer part of the heat-resistant alloy outer layer 73 is fixedly connected with a wear-resistant alloy surface layer 74. The support alloy inner layer 71 ensures the basic support strength and stability of the main rod body 1, so that it can withstand greater pressure and load. Secondly, the light alloy middle layer 72 further enhances the structural strength without increasing too much weight. It helps to reduce the overall weight of the piston rod and improve its flexibility. Furthermore, the heat-resistant alloy outer layer 73 enables the piston rod to maintain good performance in high temperature environments, broadening its scope of application. Then, the wear-resistant alloy surface layer 74 greatly improves the wear resistance of the piston rod, effectively prolongs its service life, and reduces failures and maintenance costs caused by wear. This multi-layer composite design enables the piston rod to have multiple excellent properties such as high strength, light weight, high temperature resistance, and wear resistance. It can adapt to various complex and harsh working conditions and ensure the reliability and efficiency of the piston rod in different application scenarios.

[0036] refer to Figure 4The inner layer of the supporting alloy is set as a tungsten alloy layer, the light alloy middle layer 72 is set as a titanium alloy layer, the heat-resistant alloy outer layer 73 is set as a nickel-based alloy layer, and the wear-resistant alloy surface layer 74 is set as a chromium-molybdenum steel layer. The tungsten alloy layer as the supporting alloy inner layer 71 has extremely high hardness and strength, and can provide strong support and stability for the piston rod to ensure that it is not easy to deform under high load. The light alloy middle layer 72 composed of the titanium alloy layer not only maintains a certain strength, but also reduces the overall weight of the piston rod, making the operation lighter and more flexible. The nickel-based alloy layer as the heat-resistant alloy outer layer 73 is endowed with The piston rod is endowed with excellent heat resistance, and can work stably for a long time in a high temperature environment without being affected. The wear-resistant alloy surface layer 74 of the chromium-molybdenum steel layer greatly enhances the wear resistance of the piston rod, so that it can resist various wear and tear during long-term use and maintain a good surface condition. Such a composite support sleeve 7 structure combines the advantages of multiple materials, so that the piston rod achieves an excellent balance in strength, weight, heat resistance, wear resistance, etc., and can better adapt to various complex and harsh working conditions and requirements, greatly improving the performance and practical value of the piston rod.

[0037] Principle and advantages of use: By setting the clamping mechanism 6, during use, the present invention can be used to insert the insertion rod into the inner side of the installation sleeve 2, and the limiting spring 635 can be compressed by pressing the adjusting ring 634. At this time, the hanger 64 and the hook 65 move outward, and the hanger 64 is rotated to be connected with the hook 65 and the limiting frame 62. The limiting spring 635 is reset by loosening the adjusting ring 634, and the slider 631 can be pushed to slide toward the inner end. The sliding of the slider 631 can assist in pulling the hanger 64 and the hook 65. The hanger 64 and the hook 65 move inward, which can cause the hanger 64 and the hook 65 to be stably connected to the limiting frame 62. The hook 65 and the limiting frame 62 are connected to each other, and the limiting spring 635 is extended and retracted to resist the hook 65, which can cause the hook 65 and the limiting frame 62 to be connected. The stable connection of the positioning frame 62, the stable snap connection of the hook 65 and the limiting frame 62 can assist in the snap-fit ​​installation of the mounting rod 3. By snapping the mounting rod 3 inside the mounting sleeve 2, the working head 5 and the connecting plate 4 can be quickly installed. If it needs to be removed, the adjusting ring 634 can be pressed to move inward, and the adjusting ring 634 squeezes the limiting spring 635 to shrink, and the adjusting ring 634 can cause the slider 631 to move inward. The inward movement of the slider 631 can resist and squeeze the hanging frame 64 and the hook 65. At this time, flipping the hanging frame 64 and the hook 65 can cause the hook 65 to loosen from the limiting frame 62. In this way, the mounting rod 3 can be removed from the inner side of the mounting sleeve 2, so that the whole device can quickly disassemble the mounting rod 3, which can improve the overall convenience of the working head 5 and the connecting plate 4 for the whole device.

[0038] When the composite supporting sleeve 7 is installed on the outer surface of the main rod body 1, and the supporting alloy inner layer 71 made of tungsten alloy provides high strength and hardness support, the lightweight alloy middle layer 72 made of titanium alloy brings relatively light characteristics, the heat-resistant alloy outer layer 73 made of nickel-based alloy gives good heat resistance to adapt to high temperature environment, and the wear-resistant alloy surface layer 74 made of chromium-molybdenum steel ensures excellent wear resistance. The high strength of tungsten alloy enables the piston rod to better withstand various forces and pressures during work and ensure its structural stability. The titanium alloy reduces the overall weight, which is beneficial to the operation and operation of the equipment. The heat resistance of nickel-based alloy enables the piston rod to maintain stable performance under high temperature conditions and extend its service life. The wear resistance of chromium-molybdenum steel effectively reduces wear and reduces maintenance costs, so that the piston rod can maintain a good working condition for a long time, thereby improving the reliability and work efficiency of the entire system.

Claims

1. A high-strength piston rod, comprising a main rod body (1), characterized in that: Both ends of the main rod body (1) are fixedly mounted with mounting sleeves (2), the interior of the mounting sleeves (2) is plugged with mounting rods (3), the top of the mounting rod (3) is fixedly mounted with a connecting plate (4), the bottom of the mounting rod (3) is fixedly mounted with a working head (5), the outer side of the mounting sleeve (2) is evenly spaced with clamping mechanisms (6), the mounting rods (3) are mounted on the inner side of the mounting sleeve (2) through the clamping mechanisms (6), and the outer surface of the main rod body (1) is fixedly connected with a composite support sleeve (7); The clamping mechanism (6) comprises a slide groove (61) and a limiting frame (62); the slide grooves (61) are arranged in a ring shape at equal intervals and are opened on the outer side of the mounting sleeve (2); an elastic component (63) is movably installed inside the slide groove (61); a hanging frame (64) is hinged on the outer side of the elastic component (63); a hook (65) is fixedly connected to the outer end of the hanging frame (64); the limiting frame (62) is arranged in a ring shape at equal intervals and is fixedly connected to the outer side of the mounting rod (3); the hook (65) and the limiting frame (62) are hung on each other.

2. A high-strength piston rod according to claim 1, characterized in that: The elastic component (63) comprises a slider (631), the slider (631) is slidably connected to the inner side of the slide groove (61), a limit spring (635) is fixedly installed at the bottom of the slider (631), the bottom of the limit spring (635) is fixedly connected to the inner bottom of the slide groove (61), an articulated frame (632) is fixedly installed on the outer side of the slider (631), the hanger (64) is hinged to the outer side of the articulated frame (632), a connecting shaft (633) is fixedly installed on the outer side of the slider (631), and an adjusting ring (634) is fixedly connected to the outer side of the connecting shaft (633).

3. A high-strength piston rod according to claim 2, characterized in that: The cross-sectional shape of the sliding block (631) is arranged in a convex shape, and the cross-sectional shape of the sliding groove (61) is also arranged in a convex shape.

4. A high-strength piston rod according to claim 1, characterized in that: The overall cross-sectional shape of the inner cavity of the installation sleeve (2) is a regular hexagon, and the overall cross-sectional shape of the installation rod (3) is also a regular hexagon.

5. The high-strength piston rod according to claim 3, characterized in that: The outer surface of the sliding block (631) is fixedly connected with a wear-resistant gasket, and the inner wall of the sliding groove (61) is also fixedly connected with a wear-resistant gasket.

6. A high-strength piston rod according to claim 1, characterized in that: A first connection hole (8) is provided on the outer side of the connection plate (4), and a second connection hole (9) is provided on the inner end of the connection plate (4) close to the mounting rod (3).

7. The high-strength piston rod according to claim 1, characterized in that: The overall cross-sectional shape of the working head (5) is T-shaped, and the upper end of the working head (5) is conical.

8. The high-strength piston rod according to claim 1, characterized in that: The composite supporting sleeve (7) comprises a supporting alloy inner layer (71), the supporting alloy inner layer (71) being arranged at the innermost part of the composite supporting sleeve (7), the outer part of the supporting alloy inner layer (71) being fixedly connected to a light alloy middle layer (72), the outer part of the light alloy middle layer (72) being fixedly connected to a heat-resistant alloy outer layer (73), and the outer part of the heat-resistant alloy outer layer (73) being fixedly connected to a wear-resistant alloy surface layer (74).

9. A high-strength piston rod according to claim 8, characterized in that: The supporting alloy inner layer is configured as a tungsten alloy layer, and the light alloy middle layer (72) is configured as a titanium alloy layer.

10. A high-strength piston rod according to claim 9, characterized in that: The heat-resistant alloy outer layer (73) is configured as a nickel-based alloy layer, and the wear-resistant alloy surface layer (74) is configured as a chromium-molybdenum steel layer.

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