A piston rod connection structure that facilitates disassembly and maintenance of the piston structure

Abstract

The present invention relates to the technical field of piston rod connection structures, and in particular to a piston rod connection structure that is convenient for disassembling and maintaining a piston structure, comprising a cylinder body, a bottom plate fixedly mounted on the bottom of the cylinder body, a plurality of mounting holes provided on the bottom plate, two symmetrically distributed slots provided on the inner side of the cylinder body, a piston provided in the cylinder body, a groove provided on the top of the piston, a pin rotatably mounted in the groove, a connecting rod fixedly mounted on the pin, one end of the connecting rod extending out of the cylinder body, a connecting mechanism provided on the upper end of the connecting rod, an upper ring fixedly mounted on the upper end of the cylinder body, a split ring seat provided on the upper end of the cylinder body, a lower ring fixedly mounted on the bottom of the split ring seat, two symmetrically distributed pins fixedly mounted on the bottom of the split ring seat, the pins being insertable into the slots. By disassembling the upper ring plate and the lower ring plate, the block can be slid out of the slot and the piston can be taken out of the cylinder body. The disassembly and assembly process of the piston rod connection structure inside the hydraulic cylinder is convenient, and it is convenient to clean the inside of the cylinder body.

Description

Technical Field

[0001] The present invention relates to the technical field of piston rod connection structures, and in particular to a piston rod connection structure which is convenient for disassembly and maintenance of the piston structure. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy, performing linear reciprocating or oscillating motion. Reciprocating motion can be achieved without a reduction gear, with zero transmission backlash and smooth motion. Therefore, it is widely used in the hydraulic systems of various machines. A hydraulic cylinder essentially consists of a cylinder barrel and head, a piston and piston rod, a sealing device, a buffer, and an exhaust device.

[0003] The connection between the piston and the piston rod of the hydraulic cylinder mostly adopts a threaded connection structure and a key connection structure. The threaded connection structure is simple and practical, and is widely used, but the processing and assembly of the thread are troublesome; the key connection mechanism is suitable for cylinders with high working pressure and large working mechanical vibration. Most of the existing load-bearing hydraulic cylinders use a retaining ring to connect the piston and the piston rod, and a groove is opened at the connection position. The piston and the piston rod clamp are clamped together with a key inserted into the groove. This method is inconvenient to disassemble and assemble. The internal structure of the hydraulic cylinder will form impurities such as carbon deposits after long-term work, and it needs to be cleaned regularly. During maintenance and cleaning, it is necessary to disassemble it layer by layer to remove the piston rod. The disassembly and assembly process is cumbersome and not easy to clean. For this reason, we propose a piston rod connection structure that is convenient for disassembly and maintenance of the piston structure. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the piston rod connection structure inside the hydraulic cylinder will form impurities such as carbon deposits after long-term work, and the interior needs to be cleaned regularly. During maintenance and cleaning, it is necessary to disassemble it layer by layer to remove the piston rod, and the disassembly and assembly process is cumbersome and difficult to clean. A piston rod connection structure is proposed that is convenient for disassembly and maintenance of the piston structure.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A piston rod connection structure is designed to facilitate the disassembly and maintenance of the piston structure, including a cylinder body, a base plate fixedly mounted on the bottom of the cylinder body, a plurality of mounting holes provided on the base plate, two symmetrically distributed slots provided on the inner side of the cylinder body, a piston provided in the cylinder body, blocks fixedly mounted on both sides of the piston, the blocks being slidably mounted in the slots respectively, and a piston ring fixedly mounted on the outer side of the piston.

[0007] The top of the piston is provided with a groove, a pin shaft is rotatably installed in the groove, a connecting rod is fixedly installed on the pin shaft, one end of the connecting rod extends outside the cylinder body, a connecting mechanism is provided on the upper end of the connecting rod, an upper ring piece is fixedly installed on the upper end of the cylinder body, a split ring seat is provided on the upper end of the cylinder body, a lower ring piece is fixedly installed on the bottom of the split ring seat, and two symmetrically distributed pins are fixedly installed on the bottom of the split ring seat, and the pins can be inserted into the slot.

[0008] Preferably, the upper ring plate and the lower ring plate are both provided with a plurality of first mounting holes distributed in a circumferential array, and also include a plurality of connecting bolts, which can pass through the first mounting holes and connect the upper ring plate and the lower ring plate together.

[0009] Preferably, the connecting mechanism includes a connecting rod cover and a mounting groove, the mounting groove is opened at the upper end of the connecting rod, and a second mounting hole is opened on the connecting rod cover and the connecting rod, and also includes a plurality of fastening bolts, the fastening bolts can pass through the second mounting hole and connect the connecting rod cover and the connecting rod together.

[0010] Preferably, connecting rod tiles are provided on opposite sides of the connecting rod cover and the connecting rod, and anti-slip grooves are distributed on the surface of the connecting rod tiles.

[0011] Preferably, the outer side of the cylinder body is provided with a plurality of annular heating plates equidistantly distributed vertically, and the surface of the cylinder body is integrally formed with a plurality of reinforcing ribs.

[0012] Preferably, a heat dissipation mechanism is provided at the lower end of the outer side of the cylinder body, and the heat dissipation mechanism is connected to the cylinder body and extends into the interior of the cylinder body.

[0013] Preferably, the heat dissipation mechanism includes an annular tube, which is sleeved on the lower end of the outer side of the cylinder body, and the inner side of the annular tube is connected and fixedly installed with a plurality of connecting tubes distributed in a circular array, and the ends of the connecting tubes are connected and fixedly installed in the cylinder body, and the inner sides of the connecting tubes are fixedly installed with sealing rings, and a heat conducting pipe is fixedly installed in the sealing rings, one end of the heat conducting pipe extends into the annular tube, and the outer ends of the annular tube are connected and fixedly installed with side pipes, and the side pipes are connected to the external water channel.

[0014] The present invention proposes a piston rod connection structure that is convenient for disassembly and maintenance of the piston structure. The beneficial effect is that the fastening bolt passes through the second mounting hole and connects the connecting rod cover and the connecting rod together, and is installed together through the upper ring plate and the lower ring plate. When it is necessary to clean the interior of the cylinder body and the internal structure, the upper ring plate and the lower ring plate can be disassembled to allow the block to slide out of the slot and the piston to be taken out of the cylinder body. The disassembly and assembly process of the piston rod connection structure inside the hydraulic cylinder is convenient, and it is easy to clean the interior of the cylinder body.

[0015] When used in a low-temperature environment, the rigidity of the cylinder body increases due to the low temperature. The outer side of the cylinder body is preheated by the annular heating plate to raise the temperature of the cylinder body to the operating temperature, so that the cylinder body is not easily damaged when it is impacted.

[0016] Low-temperature cooling water is transported through an external water channel and injected into the side pipe, and then discharged from the side pipe, so that circulating low-temperature water flows in the annular pipe. The heat generated in the cylinder is absorbed by the heat pipe, and the heat on the heat pipe is transferred to the low-temperature cooling water and taken away by the low-temperature cooling water, thereby accelerating the heat dissipation inside the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a piston rod connection structure proposed by the present invention, which facilitates the disassembly and maintenance of the piston structure.

[0018] Figure 2 This is a front view of a piston rod connection structure proposed by the present invention, which facilitates the disassembly and maintenance of the piston structure.

[0019] Figure 3 This is a partial enlarged schematic diagram of the structure of a piston rod connection structure proposed by the present invention, which is convenient for disassembly and maintenance of the piston structure.

[0020] Figure 4 This is an enlarged structural sectional view of the cylinder body of a piston rod connection structure proposed by the present invention, which is convenient for disassembly and maintenance of the piston structure.

[0021] In the figure: cylinder body 1, base plate 2, slot 3, block 27, piston ring 5, groove 6, pin 7, connecting rod 8, upper ring plate 9, split ring seat 10, lower ring plate 11, latch 12, first mounting hole 13, connecting bolt 14, connecting rod cover 15, mounting slot 16, second mounting hole 17, fastening bolt 18, connecting rod tile 19, annular heating plate 20, reinforcing rib 21, annular pipe 22, connecting pipe 23, sealing ring 24, heat pipe 25, side pipe 26, block 27. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described 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 the embodiments.

[0023] Example 1:

[0024] Reference Figure 1-4A piston rod connection structure that facilitates disassembly and maintenance of a piston structure includes a cylinder body 1. A bottom plate 2 is fixedly mounted on the bottom of the cylinder body 1, and a plurality of mounting holes are provided on the bottom plate 2. Two symmetrically distributed slots 3 are provided on the inner side of the cylinder body 1. A piston 4 is provided in the cylinder body 1. Blocks 27 are fixedly mounted on both sides of the piston 4. The blocks 27 are slidably mounted in the slots 3. A piston ring 5 is fixedly mounted on the outer side of the piston 4. A groove 6 is provided on the top of the piston 4. A pin 7 is rotatably mounted in the groove 6. A connecting rod 8 is fixedly mounted on the pin 7. One end of the connecting rod 8 extends outside the cylinder body 1. A connecting mechanism is provided on the upper end of the connecting rod 8. An upper ring piece 9 is fixedly mounted on the upper end of the cylinder body 1. A split ring seat 10 is provided on the upper end of the cylinder body 1. A lower ring piece 11 is fixedly mounted on the bottom of the split ring seat 10. Two symmetrically distributed pins 12 are fixedly mounted on the bottom of the split ring seat 10. The pins 12 can be inserted into the slots 3. The connecting mechanism includes a connecting rod cover 15 and a mounting groove 16. The mounting groove 16 is opened at the upper end of the connecting rod 8. A second mounting hole 17 is opened on the connecting rod cover 15 and the connecting rod 8. It also includes multiple fastening bolts 18. The fastening bolts 18 can pass through the second mounting hole 17 and connect the connecting rod cover 15 and the connecting rod 8 together.

[0025] Working principle: Install the base plate 2 on the external mounting surface through the first mounting hole on the base plate 2, connect it to the external drive shaft through the connecting mechanism, place the external drive shaft between the connecting rod cover 15 and the mounting groove 16, fasten the bolt 18 through the second mounting hole 17 and connect the connecting rod cover 15 and the connecting rod 8 together, and install them together through the upper ring plate 9 and the lower ring plate 11. When it is necessary to clean the interior and internal structure of the cylinder body 1, the upper ring plate 9 and the lower ring plate 11 can be disassembled to make the block 27 slide out of the groove 3 and the piston 4 can be taken out of the cylinder body 1.

[0026] Example 2:

[0027] Reference Figure 1-4 As another preferred embodiment of the present invention, this embodiment differs from Embodiment 1 in that the upper ring plate 9 and the lower ring plate 11 are each provided with a plurality of first mounting holes 13 distributed in a circumferential array, and also include a plurality of connecting bolts 14 that can penetrate the first mounting holes 13 and connect the upper ring plate 9 and the lower ring plate 11 together. Connecting rod tiles 19 are provided on opposite sides of the connecting rod cap 15 and the connecting rod 8, and the surfaces of the connecting rod tiles 19 are provided with anti-slip grooves. The outer side of the cylinder body 1 is sheathed with a plurality of annular heating plates 20 equidistantly spaced vertically, and a plurality of reinforcing ribs 21 are integrally formed on the surface of the cylinder body 1. The provision of the connecting rod tiles 19 increases the friction between the drive shaft and the connecting rod cap 15 and the connecting rod 8, thereby improving the installation stability of the drive shaft. When used in a low-temperature environment, the rigidity of the cylinder body 1 is increased due to the low temperature. The annular heating plates 20 preheat the outer side of the cylinder body 1 to bring the temperature of the cylinder body 1 to the operating temperature, making the cylinder body 1 less susceptible to damage when subjected to impact.

[0028] A heat dissipation mechanism is provided at the lower outer end of the cylinder body 1. This heat dissipation mechanism is connected to the cylinder body 1 and extends into the interior of the cylinder body 1. The heat dissipation mechanism includes an annular tube 22, which is sleeved around the lower outer end of the cylinder body 1. A plurality of connecting tubes 23 arranged in a circumferential array are connected and fixedly mounted inside the annular tube 22. The ends of the connecting tubes 23 are connected and fixedly mounted within the cylinder body 1. Sealing rings 24 are fixedly mounted inside the connecting tubes 23. A heat conducting pipe 25 is fixedly mounted within the sealing ring 24. One end of the heat conducting pipe 25 extends into the annular tube 22. Side pipes 26 are fixedly mounted at both ends of the annular tube 22. Side pipes 26 are connected to an external waterway. When the cylinder body 1 is operating for extended periods, low-temperature cooling water is supplied through the external waterway and injected into the side pipes 26, where it is then discharged. This causes circulating low-temperature water to flow within the annular tube 22. Heat generated within the cylinder body 1 is absorbed by the heat conducting pipes 25, which then transfer the heat from the heat conducting pipes 25 to the low-temperature cooling water, where it is carried away by the low-temperature cooling water.

[0029] Working principle: The connecting bolt 14 is passed through the first mounting hole 13 to connect the upper ring piece 9 and the lower ring piece 11 together. The friction between the drive shaft and the connecting rod cover 15 and the connecting rod 8 is increased by setting the connecting rod tile 19, so that the installation stability of the drive shaft is improved. The outer side of the cylinder body 1 is preheated by the annular heating plate 20 to raise the temperature of the cylinder body 1 to the working temperature, and the cylinder body 1 is not easily damaged when it is impacted. Low-temperature cooling water is transported through an external waterway and injected into the side pipe 26, and then discharged from the side pipe 26, so that circulating low-temperature water flows in the annular pipe 22. The heat generated in the cylinder body 1 is absorbed by the heat pipe 25, and the heat on the heat pipe 25 is transferred to the low-temperature cooling water and taken away by the low-temperature cooling water, thereby accelerating the heat dissipation inside the cylinder body 1.

[0030] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A piston rod connection structure that facilitates disassembly and maintenance of the piston structure, characterized in that: The invention comprises a cylinder body (1), a bottom plate (2) is fixedly mounted on the bottom of the cylinder body (1), a plurality of mounting holes are provided on the bottom plate (2), two symmetrically distributed clamping grooves (3) are provided on the inner side of the cylinder body (1), a piston (4) is provided in the cylinder body (1), clamping blocks (27) are fixedly mounted on both sides of the piston (4), the clamping blocks (27) are respectively slidably mounted in the clamping grooves (3), and a piston ring (5) is fixedly mounted on the outer side of the piston (4); The piston (4) is provided with a groove (6) on the top, a pin shaft (7) is rotatably mounted in the groove (6), a connecting rod (8) is fixedly mounted on the pin shaft (7), one end of the connecting rod (8) extends outside the cylinder body (1), a connecting mechanism is provided on the upper end of the connecting rod (8), an upper ring piece (9) is fixedly mounted on the upper end of the cylinder body (1), a split ring seat (10) is provided on the upper end of the cylinder body (1), a lower ring piece (11) is fixedly mounted on the bottom of the split ring seat (10), two symmetrically distributed pins (12) are fixedly mounted on the bottom of the split ring seat (10), and the pins (12) can be inserted into the slot (3); The upper ring piece (9) and the lower ring piece (11) are both provided with a plurality of first mounting holes (13) distributed in a circumferential array, and also include a plurality of connecting bolts (14), wherein the connecting bolts (14) can pass through the first mounting holes (13) and connect the upper ring piece (9) and the lower ring piece (11) together; The connecting mechanism comprises a connecting rod cover (15) and a mounting groove (16), wherein the mounting groove (16) is provided at the upper end of the connecting rod (8), and a second mounting hole (17) is provided on both the connecting rod cover (15) and the connecting rod (8), and further comprises a plurality of fastening bolts (18), wherein the fastening bolts (18) can pass through the second mounting hole (17) and connect the connecting rod cover (15) and the connecting rod (8) together.

2. The piston rod connection structure that facilitates disassembly and maintenance of the piston structure according to claim 1 is characterized in that: Connecting rod tiles (19) are provided on opposite sides of the connecting rod cover (15) and the connecting rod (8), and anti-slip grooves are distributed on the surface of the connecting rod tiles (19).

3. The piston rod connection structure that facilitates disassembly and maintenance of the piston structure according to claim 1 is characterized in that: The outer side of the cylinder body (1) is provided with a plurality of annular heating plates (20) distributed equidistantly up and down, and the surface of the cylinder body (1) is integrally formed with a plurality of reinforcing ribs (21).

4. The piston rod connection structure that facilitates disassembly and maintenance of the piston structure according to claim 1 is characterized in that: A heat dissipation mechanism is provided at the lower end of the outer side of the cylinder body (1), and the heat dissipation mechanism is communicated with the cylinder body (1) and extends into the interior of the cylinder body (1).

5. The piston rod connection structure that facilitates disassembly and maintenance of the piston structure according to claim 4 is characterized in that: The heat dissipation mechanism comprises an annular tube (22), the annular tube (22) being sleeved on the lower end of the outer side of the cylinder body (1), the inner side of the annular tube (22) being connected to and fixedly installed with a plurality of connecting tubes (23) distributed in a circumferential array, the ends of the connecting tubes (23) being connected to and fixedly installed in the cylinder body (1), the inner sides of the connecting tubes (23) being fixedly installed with sealing rings (24), the inner sides of the sealing rings (24) being fixedly installed with heat conducting tubes (25), one end of the heat conducting tubes (25) extending into the annular tube (22), the outer ends of the annular tube (22) being connected to and fixedly installed with side tubes (26), the side tubes (26) being connected to an external waterway.

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