Hydraulic cylinder piston fastening device and use method thereof

Abstract

The present invention discloses a hydraulic oil cylinder piston fastening device and a method for using the same, which relates to the technical field of hydraulic oil cylinders, including a cylinder body, a piston body movably connected to the inside of the cylinder body, a group of symmetrical sealing rings movably connected to the outside of the piston body, and the sealing rings are tightly attached to the inner wall of the cylinder body, and a plurality of movable rods movably connected to the inside of the piston body, and the movable rods are distributed in a circular array. The present invention presses the knob at the rear end of the driving rod inwardly through the driving mechanism set up, and under the action of the driving disk, pushes the force rod forward to move the force rod out from the inside of the rotating column, and at the same time, the driving rod drives the adjustment block to move inward. Under the action of the rack and the gear, the force rod flips out from the inside of the storage groove, which is conducive to using the force rod to drive the force rod to rotate, thereby facilitating the adjustment of the degree of fit between the sealing plate on the outside of the piston body and the inner wall of the cylinder body from the outside of the cylinder body, effectively improving the sealing performance of the sealing plate.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic oil cylinders, and in particular to a hydraulic oil cylinder piston fastening device and a use method thereof. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy, producing linear reciprocating motion (or oscillating motion). It features a simple structure and reliable operation. Using it to achieve reciprocating motion eliminates the need for a reduction gear, eliminates transmission backlash, and provides 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] When the hydraulic cylinder piston moves repeatedly in the cylinder, the piston is prone to loosening, which reduces the sealing of the piston, thereby causing the hydraulic cylinder to have a poor performance. In addition, a single sealing ring cannot always ensure the sealing of the piston. The existing hydraulic cylinder lacks a device that can adjust the sealing of its internal piston on its outside. Therefore, a hydraulic cylinder piston fastening device and a method of using the same are needed to solve the existing deficiencies. Summary of the Invention

[0004] Technical problems solved

[0005] The purpose of the present invention is to remedy the deficiencies of the prior art and to provide a hydraulic cylinder piston fastening device and a method of using the same.

[0006] Technical Solution

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a hydraulic cylinder piston fastening device, comprising a cylinder body, the interior of the cylinder body being movably connected to a piston body, the outer side of the piston body being movably connected to a group of symmetrical sealing rings, and the sealing rings are tightly attached to the inner wall of the cylinder body, the interior of the piston body being movably connected to a plurality of movable rods, and the movable rods are distributed in a circular array, the ends of the movable rods away from the axis of the piston body are fixedly connected to a baffle, the outer side of the piston body is sleeved with a sealing plate, the outer walls of the baffles are tightly attached to the inner wall of the sealing plate, and the outer walls of the sealing plate are tightly attached to the inner wall of the cylinder body, an adjusting mechanism is provided inside the piston body, the adjusting mechanism is movably connected to the proximal end of the movable rod, and the rear end of the adjusting mechanism is movably connected to a rotating mechanism, the rear end of the cylinder body is movably connected to a driving mechanism, and the driving mechanism is movably connected to the rotating mechanism.

[0008] As mentioned above, the adjustment mechanism includes an adjustment column and a cone. The cone is located inside the piston body, and the rear end of the cone is fixedly connected to the front end of the adjustment column. A thread is provided on the outer side of the adjustment column, and the adjustment column is threadedly connected to the rear end center of the piston body.

[0009] As mentioned above, the cross-sectional area of ​​the truncated cone gradually increases from left to right, and the end of the moving rod close to the axis of the piston body is in close contact with the side surface of the truncated cone.

[0010] As mentioned above, the rotating mechanism includes an adjusting block, a rack, a gear and a force-bearing rod. The number of the rack, gear and force-bearing rod is the same, and the rack, gear and force-bearing rod are distributed in a circular array. The rack is fixedly connected to the outer side of the force-bearing rod, and the force-bearing rod is movably connected to the rear end of the adjusting column through a rotating shaft. The gear is fixedly connected to the middle section of the rotating shaft of the force-bearing rod, and the rack is meshed with the gear respectively.

[0011] As mentioned above, a plurality of receiving grooves are provided on the outer side of the adjusting column, and the number of the receiving grooves is consistent with the number of the force-bearing rods, and the force-bearing rods are movably connected to the inside of the receiving grooves through rotating shafts.

[0012] As mentioned above, a return spring is fixedly connected to the inner side of the rear end of the adjusting column, and the other end of the return spring is fixedly connected to the front end of the adjusting column, and the adjusting block is movably connected to the inner side of the rear end of the adjusting column.

[0013] As mentioned above, the driving mechanism includes a force rod, a compression spring, a stop block, a driving disk and a driving rod. The force rod, compression spring and stop block form a group, and the force rod, compression spring and stop block are distributed in a circular array. The driving rod passes through the driving disk, and the driving rod is fixedly connected to the driving disk.

[0014] As mentioned above, the force applying rod passes through the stopper, and the force applying rod is fixedly connected to the stopper, the front ends of the compression springs are respectively fixedly connected to the rear ends of the stopper, and the rear ends of the compression springs are fixedly connected to the front end of the driving disk.

[0015] As mentioned above, the rear end of the cylinder body is movably connected to the rotating column, and the rear end of the rotating column extends to the outside of the cylinder body, the force rod, compression spring, stop block, drive plate and drive rod are all movably connected to the inside of the rotating column, and the front ends of the force rod and the drive rod extend to the outside of the front end of the rotating column.

[0016] As mentioned above, the force-applying rods and the force-receiving rods are staggered, and the front end of the driving rod conflicts with the rear end of the adjusting block. Several rotating rods are fixedly connected to the outer side of the rear end of the rotating column, and the rotating rods are distributed in a circular array.

[0017] A method for using a hydraulic cylinder piston fastening device comprises the following steps:

[0018] S1. First, install the piston body movably inside the cylinder body so that the sealing ring fits tightly against the inner wall of the cylinder body.

[0019] S2. Then press the knob at the rear end of the driving rod inward to make it move toward the inside of the cylinder body, and under the action of the driving disk, push the force rod forward to move the force rod out from the inside of the rotating column, because the front end of the driving rod fits with the rear end of the adjustment block.

[0020] S3. At the same time, the adjusting block is driven to move toward the inside of the adjusting column, and the rack moves synchronously with the adjusting block. Under the action of the gear, the force-bearing rod is driven to rotate out from the inside of the receiving groove until the force-bearing rod and the outer wall of the adjusting column are perpendicular to each other. At the same time, the force-applying rod moves between the adjacent force-bearing rods, that is, the force-bearing rod and the force-applying rod are staggered.

[0021] S4. Then, the rotating rod is used to drive the rotating column to rotate, thereby driving the force-applying rod to rotate. Under the action of the force-receiving rod, the adjusting column is driven to rotate, and the circular table is driven to move inward.

[0022] S5. Since the end of the moving rod close to the axis of the piston body is in contact with the outer side of the truncated cone, the moving rod is pushed outward, which drives the blocking piece to move outward, thereby supporting the sealing piece outward.

[0023] Beneficial effects:

[0024] Compared with the prior art, this hydraulic cylinder piston fastening device and its use method have the following beneficial effects:

[0025] 1. The present invention drives the adjusting column to rotate inside the cylinder body through the adjustment mechanism. Since the adjusting column is threadedly connected to the piston body, the round table is driven to move inside the piston body. Since the end of the moving rod close to the axis of the piston body is in contact with the outer side of the round table, the moving rod is pushed to move outward, driving the baffle to move outward, thereby supporting the sealing plate outward, which is conducive to a closer fit between the sealing plate and the inner wall of the cylinder body, avoiding the sealing ring from becoming loose after the piston slides back and forth, thereby maintaining the tightness of the connection between the piston and the cylinder body.

[0026] 2. The present invention uses a rotating mechanism to move the adjusting block toward the inside of the adjusting column, and the rack moves synchronously with the adjusting block. Under the action of the gear, the force-bearing rod is driven to rotate out from the inside of the receiving groove until the force-bearing rod and the outer wall of the adjusting column are perpendicular to each other. The adjusting block is released and, under the action of the reset spring, the adjusting block is pushed back to its original position. At the same time, the force-bearing rod is recovered to the inside of the receiving groove, which is beneficial to reducing the resistance exerted on the piston body when the oil contacts the force-bearing rod, and facilitates the piston body to slide back and forth inside the cylinder body.

[0027] 3. The present invention sets a driving mechanism to press the knob at the rear end of the driving rod inward, and under the action of the driving disk, pushes the force rod to move forward, so that the force rod moves out from the inside of the rotating column. At the same time, the driving rod drives the adjusting block to move inward. Under the action of the rack and the gear, the force rod is flipped out from the inside of the storage groove, which is conducive to using the force rod to drive the force rod to rotate, thereby facilitating the adjustment of the degree of fit between the sealing plate on the outside of the piston body and the inner wall of the cylinder body from the outside of the cylinder body, effectively improving the sealing performance of the sealing plate.

[0028] Other advantages, objects and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the internal structure of the cylinder body of the present invention;

[0031] Figure 3 It is a schematic structural diagram of the regulating mechanism of the present invention;

[0032] Figure 4 It is a schematic structural diagram of the rotating mechanism of the present invention;

[0033] Figure 5 Schematic diagram of the driving mechanism structure of the present invention;

[0034] Figure 6 For the present invention Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0035] In the figure: 1. Cylinder body; 2. Piston body; 3. Sealing ring; 4. Moving rod; 5. Block plate; 6. Sealing plate; 7. Adjusting mechanism; 701. Adjusting column; 702. Cone; 8. Rotating mechanism; 801. Adjusting block; 802. Rack; 803. Gear; 804. Force rod; 9. Driving mechanism; 901. Force rod; 902. Compression spring; 903. Block plate; 904. Driving disk; 905. Driving rod; 10. Receiving groove; 11. Return spring; 12. Rotating column; 13. Rotating rod. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] like Figure 1-6 As shown, the present invention provides a technical solution: a hydraulic oil cylinder piston fastening device, comprising a cylinder body 1, the cylinder body 1 is movably connected to a piston body 2, the outer side of the piston body 2 is movably connected to a group of symmetrical sealing rings 3, and the sealing rings 3 are tightly attached to the inner wall of the cylinder body 1, the piston body 2 is movably connected to several moving rods 4, and the moving rods 4 are distributed in a circular array, and the ends of the moving rods 4 away from the axis of the piston body 2 are fixedly connected to a baffle 5, the outer side of the piston body 2 is sleeved with a sealing plate 6, the outer walls of the baffles 5 are tightly attached to the inner wall of the sealing plate 6, and the outer wall of the sealing plate 6 is tightly attached to the inner wall of the cylinder body 1, an adjusting mechanism 7 is provided inside the piston body 2, the adjusting mechanism 7 is movably connected to the proximal end of the moving rod 4, and the rear end of the adjusting mechanism 7 is movably connected to a rotating mechanism 8, the rear end of the cylinder body 1 is movably connected to a driving mechanism 9, and the driving mechanism 9 is movably connected to the rotating mechanism 8.

[0038] First, the piston body 2 is movably installed inside the cylinder body 1 so that the sealing ring 3 fits tightly against the inner wall of the cylinder body 1. Then, the driving mechanism 9 at the rear end of the cylinder body 1 drives the rotating mechanism 8 at the rear end of the piston body 2 to rotate, thereby driving the adjusting mechanism 7 to operate, pushing the moving rod 4 to move outward, driving the baffle 5 to move outward, thereby supporting the sealing plate 6 outward, so that the sealing plate 6 fits more tightly against the inner wall of the cylinder body 1.

[0039] like Figure 1 、 Figure 2 and Figure 3 As shown, the adjustment mechanism 7 includes an adjusting column 701 and a frustum 702. The frustum 702 is located inside the piston body 2, and the rear end of the frustum 702 is fixedly connected to the front end of the adjusting column 701. A thread is provided on the outer side of the adjusting column 701, and the adjusting column 701 is threadedly connected to the rear end center of the piston body 2. The cross-sectional area of ​​the frustum 702 gradually increases from left to right, and the end of the moving rod 4 close to the axis of the piston body 2 is tightly attached to the side of the frustum 702.

[0040] The drive adjusting column 701 rotates inside the cylinder body 1. Since the adjusting column 701 is threadedly connected to the piston body 2, the table 702 is driven to move inside the piston body 2. Since the end of the moving rod 4 close to the axis of the piston body 2 is in contact with the outer side of the table 702, the moving rod 4 is pushed to move outward, driving the baffle 5 to move outward, thereby supporting the sealing plate 6 outward, which is conducive to the sealing plate 6 and the inner wall of the cylinder body 1 to fit more closely, and avoid the sealing ring 3 becoming loose after the piston slides back and forth, thereby maintaining the tightness of the connection between the piston and the cylinder body 1.

[0041] like Figure 1 、 Figure 2 、 Figure 4 and Figure 6 As shown, the rotating mechanism 8 includes an adjusting block 801, a rack 802, a gear 803 and a force rod 804. The number of the rack 802, the gear 803 and the force rod 804 is the same, and the rack 802, the gear 803 and the force rod 804 are distributed in a circular array. The rack 802 is fixedly connected to the outer side of the force rod 804, and the force rod 804 is movably connected to the rear end of the adjusting column 701 through a rotating shaft. The gear 803 is fixedly connected to the middle section of the rotating shaft of the force rod 804. The rack 802 is meshed with the gear 803 respectively, and several receiving grooves 10 are opened on the outside of the adjusting column 701. The number of the receiving grooves 10 is consistent with the number of the force-bearing rods 804. The force-bearing rods 804 are movably connected to the inside of the receiving grooves 10 through the rotating shaft. The inner side of the rear end of the adjusting column 701 is fixedly connected with a return spring 11, and the other end of the return spring 11 is fixedly connected to the front end of the adjusting column 701, and the adjusting block 801 is movably connected to the inner side of the rear end of the adjusting column 701.

[0042] The adjusting block 801 is moved toward the inside of the adjusting column 701, and the rack 802 moves synchronously with the adjusting block 801. Under the action of the gear 803, the force-bearing rod 804 is driven to rotate out from the inside of the receiving groove 10 until the force-bearing rod 804 and the outer wall of the adjusting column 701 are perpendicular to each other. The adjusting block 801 is released, and under the action of the return spring 11, the adjusting block 801 is pushed back to its original position. At the same time, the force-bearing rod 804 is recovered to the inside of the receiving groove 10, which is beneficial to reduce the resistance of the piston body 2 when the oil contacts the force-bearing rod 804, making it easier for the piston body 2 to slide back and forth inside the cylinder body 1.

[0043] like Figure 1 、 Figure 2 and Figure 5As shown, the driving mechanism 9 includes a force rod 901, a compression spring 902, a block 903, a driving disk 904 and a driving rod 905. The force rod 901, the compression spring 902 and the block 903 are a group, and the force rod 901, the compression spring 902 and the block 903 are distributed in a circular array. The driving rod 905 passes through the driving disk 904, and the driving rod 905 is fixedly connected to the driving disk 904. The force rod 901 passes through the block 903, and the force rod 901 is fixedly connected to the block 903. The front ends of the compression springs 902 are fixedly connected to the rear ends of the block 903, and the rear ends of the compression springs 902 are fixedly connected to The front end of the driving disk 904 and the rear end of the cylinder body 1 are movably connected to the rotating column 12, and the rear end of the rotating column 12 extends to the outside of the cylinder body 1. The force rod 901, the compression spring 902, the stop block 903, the driving disk 904 and the driving rod 905 are all movably connected to the inside of the rotating column 12, and the front end of the force rod 901 and the front end of the driving rod 905 both extend to the outside of the front end of the rotating column 12. The force rod 901 and the force-bearing rod 804 are staggered, and the front end of the driving rod 905 conflicts with the rear end of the adjusting block 801. Several rotating rods 13 are fixedly connected to the outside of the rear end of the rotating column 12, and the rotating rods 13 are distributed in a circular array.

[0044] The knob at the rear end of the driving rod 905 is pressed inwardly to move it toward the inside of the cylinder body 1, and under the action of the driving disk 904, the force-applying rod 901 is pushed forward, causing the force-applying rod 901 to move out from the inside of the rotating column 12. Since the front end of the driving rod 905 is in contact with the rear end of the adjusting block 801, the adjusting block 801 is driven to move toward the inside of the adjusting column 701, and the rack 802 moves synchronously with the adjusting block 801. Under the action of the gear 803, the force-receiving rod 804 is driven to rotate out from the inside of the storage groove 10 until the force-receiving rod 804 and the outer wall of the adjusting column 701 are perpendicular to each other. At the same time, the force-applying rod 901 moves between the adjacent force-receiving rods 804, that is, the force-receiving rod 804 and the force-applying rod 901 are staggered. Then, the rotating rod 13 is used to drive the rotating column 12 to rotate, thereby driving the force-applying rod 901 to rotate. Under the action of the force-receiving rod 804, the adjusting column 701 is driven to rotate and the round table 702 is driven to move inward.

[0045] A method for using a hydraulic cylinder piston fastening device comprises the following steps:

[0046] S1. First, movably install the piston body 2 inside the cylinder body 1 so that the sealing ring 3 is tightly fitted to the inner wall of the cylinder body 1.

[0047] S2. Then press the knob at the rear end of the driving rod 905 inward to make it move toward the inside of the cylinder body 1, and under the action of the driving disk 904, push the force rod 901 forward, so that the force rod 901 moves out from the inside of the rotating column 12, because the front end of the driving rod 905 is in contact with the rear end of the adjustment block 801.

[0048] S3. At the same time, the adjusting block 801 is driven to move toward the inside of the adjusting column 701, and the rack 802 moves synchronously with the adjusting block 801. Under the action of the gear 803, the force-bearing rod 804 is driven to rotate out from the inside of the storage groove 10 until the force-bearing rod 804 and the outer wall of the adjusting column 701 are perpendicular to each other. At the same time, the force-applying rod 901 moves between the adjacent force-bearing rods 804, that is, the force-bearing rod 804 and the force-applying rod 901 are staggered.

[0049] S4. Then, the rotating rod 13 is used to drive the rotating column 12 to rotate, thereby driving the force-applying rod 901 to rotate. Under the action of the force-receiving rod 804, the adjusting column 701 is driven to rotate, and the circular table 702 is driven to move inward.

[0050] S5. Since the end of the moving rod 4 close to the axis of the piston body 2 is in contact with the outer side of the truncated cone 702, the moving rod 4 is pushed to move outward, driving the blocking piece 5 to move outward, thereby supporting the sealing piece 6 outward.

[0051] Working principle: When in use, first install the piston body 2 movably inside the cylinder body 1 so that the sealing ring 3 fits tightly against the inner wall of the cylinder body 1, and then press the knob at the rear end of the driving rod 905 inward to make it move toward the inside of the cylinder body 1, and under the action of the driving disk 904, push the force rod 901 forward to move the force rod 901 out from the inside of the rotating column 12. Since the front end of the driving rod 905 fits against the rear end of the adjusting block 801, the adjusting block 801 is driven to move toward the inside of the adjusting column 701 at the same time, and the rack 802 moves synchronously with the adjusting block 801. Under the action of the gear 803, the force rod 804 is driven to rotate out from the inside of the storage groove 10 The force rod 804 is rotated until the outer wall of the adjusting column 701 is perpendicular to each other, and the force-applying rod 901 is moved between the adjacent force-applying rods 804, that is, the force-applying rod 804 and the force-applying rod 901 are staggered. Then, the rotating rod 13 is used to drive the rotating column 12 to rotate, thereby driving the force-applying rod 901 to rotate. Under the action of the force-applying rod 804, the adjusting column 701 is driven to rotate, and the round table 702 is driven to move inward. Since the end of the moving rod 4 close to the axis of the piston body 2 is in contact with the outer side of the round table 702, the moving rod 4 is pushed to move outward, driving the blocking piece 5 to move outward, thereby supporting the sealing piece 6 outward, so that the sealing piece 6 is more closely attached to the inner wall of the cylinder body 1.

[0052] It should be noted that, in this document, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected", and "connected" should be understood in a broad sense. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "connected" can be a direct connection, an indirect connection through an intermediate medium, or a communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder piston fastening device, comprising a cylinder body (1), characterized in that: The cylinder body (1) is movably connected to the piston body (2), and the outer side of the piston body (2) is movably connected to a group of symmetrical sealing rings (3), and the sealing rings (3) are in close contact with the inner wall of the cylinder body (1). The piston body (2) is movably connected to a plurality of moving rods (4), and the moving rods (4) are distributed in a circular array. The ends of the moving rods (4) away from the axis of the piston body (2) are fixedly connected to a baffle (5). The outer side of the piston body (2) is provided with a sealing plate (6), and the outer wall of the baffle (5) is in close contact with the inner wall of the sealing plate (6), and the outer wall of the sealing plate (6) is in close contact with the inner wall of the cylinder body (1). The piston body (2) is provided with an adjusting mechanism (7), and the adjusting mechanism (7) is in close contact with the moving rod (4). ) is movably connected to the proximal end of the piston body (2), and the rear end of the adjusting mechanism (7) is movably connected to the rotating mechanism (8), the rear end of the cylinder body (1) is movably connected to the driving mechanism (9), and the driving mechanism (9) is movably connected to the rotating mechanism (8), the adjusting mechanism (7) includes an adjusting column (701) and a round table (702), the round table (702) is located inside the piston body (2), and the rear end of the round table (702) is fixedly connected to the front end of the adjusting column (701), the outer side of the adjusting column (701) is provided with a thread, and the adjusting column (701) is threadedly connected to the rear end center of the piston body (2), the cross-sectional area of ​​the round table (702) gradually increases from left to right, and the end of the moving rod (4) close to the axis of the piston body (2) is connected to the round table (702). The sides of the platform (702) are in close contact with each other, and the rotating mechanism (8) includes an adjusting block (801), a rack (802), a gear (803) and a force rod (804). The number of the rack (802), the gear (803) and the force rod (804) is the same, and the rack (802), the gear (803) and the force rod (804) are distributed in a circular array. The rack (802) is fixedly connected to the outside of the force rod (804), and the force rod (804) is movably connected to the rear end of the adjusting column (701) through a rotating shaft. The gear (803) is fixedly connected to the middle section of the rotating shaft of the force rod (804), and the rack (802) is meshed with the gear (803) respectively. The outside of the adjusting column (701) A plurality of receiving slots (10) are provided, the number of the receiving slots (10) being consistent with the number of the force-bearing rods (804), the force-bearing rods (804) being movably connected to the inside of the receiving slots (10) through rotating shafts, a return spring (11) being fixedly connected to the inner side of the rear end of the adjusting column (701), and the other end of the return spring (11) being fixedly connected to the front end of the adjusting block (801), and the adjusting block (801) being movably connected to the inner side of the rear end of the adjusting column (701), the driving mechanism (9) comprising a force-applying rod (901), a compression spring (902), a stopper (903), a driving disc (904) and a driving rod (905), the force-applying rod (901), the compression spring (902) and the stopper (903) forming a group,The force-applying rod (901), the compression spring (902) and the stopper (903) are all distributed in a circular array, the driving rod (905) passes through the driving disk (904), and the driving rod (905) is fixedly connected to the driving disk (904).

2. The hydraulic cylinder piston fastening device according to claim 1, characterized in that: The force applying rod (901) passes through the stopper (903), and the force applying rod (901) is fixedly connected to the stopper (903). The front ends of the compression springs (902) are respectively fixedly connected to the rear ends of the stopper (903), and the rear ends of the compression springs (902) are fixedly connected to the front end of the driving disk (904).

3. The hydraulic cylinder piston fastening device according to claim 2, characterized in that: The rear end of the cylinder body (1) is movably connected to a rotating column (12), and the rear end of the rotating column (12) extends to the outside of the cylinder body (1); the force rod (901), the compression spring (902), the stopper (903), the drive disc (904) and the drive rod (905) are all movably connected to the inside of the rotating column (12), and the front end of the force rod (901) and the front end of the drive rod (905) extend to the outside of the front end of the rotating column (12); the force rod (901) and the force rod (804) are arranged in a staggered manner, and the front end of the drive rod (905) contacts the rear end of the adjustment block (801); and a plurality of rotating rods (13) are fixedly connected to the outside of the rear end of the rotating column (12), and the rotating rods (13) are arranged in a circular array.

4. A method for using the hydraulic cylinder piston fastening device according to claim 3, characterized in that: The steps include: S1. First, movably install the piston body (2) inside the cylinder body (1) so that the sealing ring (3) is tightly fitted to the inner wall of the cylinder body (1); S2. Then, the knob at the rear end of the driving rod (905) is pressed inward to move it toward the inside of the cylinder (1), and under the action of the driving disk (904), the force rod (901) is pushed forward to move it out from the inside of the rotating column (12). Since the front end of the driving rod (905) is in contact with the rear end of the adjusting block (801); S3, simultaneously driving the adjustment block (801) to move toward the inside of the adjustment column (701), and the rack (802) moves synchronously with the adjustment block (801), and under the action of the gear (803), drives the force rod (804) to rotate out from the inside of the storage groove (10) until the force rod (804) and the outer wall of the adjustment column (701) are perpendicular to each other, and at the same time, the force rod (901) moves between the adjacent force rods (804), that is, the force rods (804) and the force rods (901) are staggered; S4, then using the rotating rod (13) to drive the rotating column (12) to rotate, thereby driving the force-applying rod (901) to rotate, and under the action of the force-receiving rod (804), driving the adjusting column (701) to rotate, and driving the circular table (702) to move inward; S5. Since the end of the moving rod (4) close to the axis of the piston body (2) is in contact with the outer side of the truncated cone (702), the moving rod (4) is pushed to move outward, driving the blocking plate (5) to move outward, thereby supporting the sealing plate (6) outward.

Images