A buffer type hydraulic cylinder

Abstract

The present invention discloses a buffer type hydraulic cylinder, and specifically relates to the technical field of hydraulic cylinders. The present invention comprises a cylinder body, a piston rod is arranged on one side of the cylinder body, a separator is arranged on the side of the cylinder body close to the piston rod, the separator comprises a first circular ring and an arc plate, a connecting device is arranged between the first circular ring and the cylinder body, the first circular ring is sleeved on the surface of the cylinder body, the inner wall of the first circular ring is larger than the surface of the piston rod, a connecting block is fixedly connected to one side of the first circular ring, and a spring is fixedly connected to one side of the connecting block. The present invention can block the piston rod and the cylinder body by arranging the separator, and at the same time reduce the damage of the piston rod to the surface of the cylinder body during the reset movement, reduce the frequent collision between the piston rod and the cylinder body during the reciprocating movement, cause the cylinder body close to the piston rod to be damaged, affect the normal use of the cylinder body, and improve the use efficiency and life of the cylinder body.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic cylinders, and in particular to a buffer type hydraulic cylinder. Background Art

[0002] The hydraulic cylinder is an energy conversion device that converts hydraulic energy into mechanical energy for reciprocating linear motion. It converts hydraulic energy into mechanical energy. When it is used to achieve reciprocating motion, the deceleration device can be eliminated, there is no transmission gap, and the movement is smooth. It is widely used in the hydraulic systems of various machines.

[0003] The piston rod of the existing hydraulic cylinder will continuously reciprocate when in use. Since the piston rod will collide with the cylinder body when resetting, the piston rod may continuously collide with the cylinder body when used frequently, causing damage to the cylinder body and affecting the service life of the cylinder body. Summary of the invention

[0004] The present invention proposes a buffer hydraulic cylinder to solve the problem that the piston rod may collide with the cylinder body when it is reset, which may cause the piston rod to collide with the cylinder body continuously during frequent use, causing damage to the cylinder body and affecting the service life of the cylinder body.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a buffer hydraulic cylinder, comprising a cylinder body, a piston rod is arranged on one side of the cylinder body, a separator is arranged on the side of the cylinder body close to the piston rod, the separator comprises a first circular ring and an arc plate, a connecting device is arranged between the first circular ring and the cylinder body, the first circular ring is sleeved on the surface of the cylinder body, the inner wall of the first circular ring is larger than the surface of the piston rod, a connecting block is fixedly connected to one side of the first circular ring, a spring is fixedly connected to one side of the connecting block, a circular hole block is fixedly connected to one end of the spring away from the connecting block, a second circular ring is fixedly connected to one side of the circular hole block, the second circular ring is sleeved on the surface of the cylinder body and the piston rod, the inner wall of the second circular ring is larger than the surface of the piston rod, a threaded hole is opened on one side of the second circular ring, a rubber pad is fixedly connected to one side of the circular plate, a circular hole frame is fixedly connected to one side of the circular plate, a bolt is arranged inside the circular hole frame, the surface of the bolt is threadedly connected to the inner wall of the threaded hole, and the size and shape of the inner wall of the circular arc plate are adapted to the size and shape of the surface of the piston rod.

[0006] The effect achieved by the above components is as follows: by setting the separation device, first manually move the first ring, so that the first ring drives the connecting block to move, so that the connecting block drives the spring to move, so that the spring drives the circular hole block to move, and so that the circular hole block drives the second ring to move. When the first ring moves to the position of being sleeved on the surface of the cylinder body, the second ring is sleeved on the surface of the cylinder body and the piston rod. At this time, the first ring is connected and fixed to the cylinder body through the connecting device, and the circular arc plate is manually moved at the same time, so that the circular arc plate drives the rubber pad to move, so that the circular arc plate drives the circular hole frame to move. When the circular arc plate moves to a position that fits the surface of the second ring, the inner wall of the circular arc plate is close to the surface of the piston rod, so that the inner wall of the circular hole frame coincides with the inner wall of the threaded hole. At this time, the bolt is rotated by a tool so that the bolt is rotated into the interior of the circular hole frame and the threaded hole to fix the position of the circular hole frame and the circular arc plate, so that the rubber pad and the circular arc plate are located on the side of the piston rod close to the cylinder body. When the piston rod is reset along the inside of the cylinder body toward the cylinder body, the piston rod The plug rod and the rubber pad preferentially contact and squeeze the rubber pad, so that the rubber pad squeezes the arc plate, and the arc plate squeezes the second ring, so that the second ring slides along the surface of the cylinder body toward the surface of the cylinder body. Under the limiting action of the first ring on the spring, the second ring squeezes the spring. When the second ring moves to the maximum contraction position of the spring, the spring limits the second ring, so that the second ring limits the arc plate and the rubber pad, so that the second ring cooperates with the arc plate and the rubber pad to separate the piston rod from the cylinder body, and under the elastic and deformation action of the rubber pad, the compression damage caused by the piston rod to the arc plate and the second ring can be reduced. At the same time, when the piston rod moves away from the cylinder body, the second ring can be driven to reset under the reaction force of the spring, thereby achieving continuous isolation of the cylinder body and the piston rod, reducing the frequent collision between the piston rod and the cylinder body when the reciprocating movement is performed, causing damage to the side of the cylinder body close to the piston rod, affecting the normal use of the cylinder body, and improving the use efficiency and life of the cylinder body.

[0007] Preferably, a positioning rod is fixedly connected to one side of the connection block close to the spring, the surface of the positioning rod is slidably connected to the inner wall of the circular hole block, and the positioning rod is located inside the spring.

[0008] The effect achieved by the above-mentioned components is: by setting the positioning rod, the positioning rod can be located inside the spring to assist in limiting the spring, thereby reducing the situation in which the spring bends significantly during the telescopic movement, causing the spring to deform and affect its use; at the same time, the positioning rod is located inside the circular hole block to limit the second ring, thereby reducing the situation in which the second ring shakes or rotates slightly during the left and right movement, thereby improving the stability of the second ring.

[0009] Preferably, one end of the positioning rod away from the connecting block is fixedly connected to a limiting plate, and the surface of the limiting plate is larger than the inner wall of the circular hole block.

[0010] The effect achieved by the above components is: by setting the limit plate, the limit plate can intercept the circular hole block moving left and right along the surface of the positioning rod, reducing the separation of the circular hole block from the positioning rod when moving left and right along the surface of the positioning rod, thereby improving the movement stability of the circular hole block along the surface of the positioning rod.

[0011] Preferably, a rectangular block is fixedly connected to one side of the circular hole frame, a rectangular hole is opened on the inner wall of the second circular ring near the threaded hole, and the surface size and shape of the rectangular block are adapted to the size and shape of the inner wall of the rectangular hole.

[0012] The effect achieved by the above components is: by setting the rectangular block and the rectangular hole, when the arc plate moves to a position that fits with the surface of the second circular ring, the rectangular block can be inserted into the rectangular hole to assist in limiting the circular hole block, thereby reducing the shaking of the circular hole frame when personnel turn the bolts. At the same time, personnel can quickly calibrate the position of the arc plate and the circular hole frame by inserting the rectangular block into the rectangular hole, thereby improving the efficiency and convenience of calibrating the inner wall of the circular hole frame and the inner wall of the threaded hole.

[0013] Preferably, a reinforcement block is fixedly connected to one side of the circular hole block, and the reinforcement block is fixedly connected to the second circular ring.

[0014] The effect achieved by the above-mentioned components is: by setting the reinforcement block, the reinforcement block can strengthen the connection between the circular hole block and the second circular ring, thereby improving the connection strength between the circular hole block and the second circular ring, reducing the separation of the reinforcement block from the second circular ring when under pressure, and improving the connection stability between the circular hole block and the second circular ring.

[0015] Preferably, a plurality of reinforcing ribs are fixedly connected to one side of the second circular ring, and the plurality of reinforcing ribs are arranged at equal distances.

[0016] The effect achieved by the above-mentioned components is: by arranging reinforcing ribs, the reinforcing ribs can increase the strength of the second ring, reduce the second ring from breaking or expanding outward when squeezed by the piston rod, improve the stress strength of the second ring, and increase the blocking efficiency and stability of the second ring to the piston rod.

[0017] Preferably, the connecting device includes a round hole column, which is fixedly connected to the cylinder body, and a screw is fixedly connected to one side of the connecting block. A nut is threadedly connected to the surface of the screw, and the surface size and shape of the screw are adapted to the size and shape of the inner wall of the round hole column, and the surface of the nut is larger than the inner wall of the round hole column.

[0018] The effect achieved by the above-mentioned components is as follows: by setting the connecting device, first manually move the first ring, so that the first ring drives the connecting block to move, and the connecting block drives the screw to move. When the first ring moves to a position where it is sleeved on the surface of the cylinder body and fits with the surface of the circular hole column, the circular hole column intercepts the first ring, so that the screw is inserted into the interior of the circular hole column. At this time, the nut is rotated by a tool so that the nut moves left and right along the surface of the screw. When the nut moves to a position where the surface of the circular hole column is extruded, the nut pulls the screw to move in a direction close to the circular hole column, so that the screw drives the connecting block to move in a direction close to the circular hole column, and the connecting block drives the first ring to move in a direction close to the circular hole column. When the connecting block and the first ring move to a position that is closely fitted with the surface of the circular hole column, the first ring is fixed in a position that fits with the surface of the circular hole column, thereby completing the rapid assembly of the partition device and the cylinder body. At the same time, the partition device and the cylinder body can be quickly disassembled in the later stage, thereby improving the flexibility of use of the partition device and the convenience of later maintenance or replacement.

[0019] Preferably, one side of the circular hole column is fixedly connected to an arc rod, and one end of the arc rod away from the circular hole column is fixedly connected to a cylindrical block.

[0020] The effect achieved by the above-mentioned components is: by arranging the arc rod and the cylindrical block, when the first circular ring moves to a position tightly fitted with the surface of the circular hole column, the cylindrical block can fit with the surface of the first circular ring, so that the arc rod and the cylindrical block can provide auxiliary support for the side of the first circular ring away from the circular hole column, thereby reducing the shaking of the side of the first circular ring away from the circular hole column during use after the first circular ring is fixedly connected to the circular hole column, and further improving the connection stability between the first circular ring and the circular hole column.

[0021] Preferably, a support block is fixedly connected to a side of the circular hole column away from the piston rod, and the support block is fixedly connected to the cylinder body.

[0022] The effect achieved by the above-mentioned components is: by setting the support block, the support block can strengthen the connection between the round hole column and the cylinder body, improve the connection strength between the round hole column and the cylinder body, and reduce the separation of the round hole column from the cylinder body during use. At the same time, the support block can provide auxiliary support to the side of the round hole column away from the piston rod, reduce the round hole column from tilting away from the piston rod when it is subjected to the pressure brought by the first ring, and further improve the force stability of the round hole column.

[0023] Preferably, a round rod is fixedly connected to the side of the circular hole column close to the piston rod, and a rubber block is fixedly connected to the end of the round rod away from the circular hole column. A circular through hole is opened on one side of the connecting block. The surface size and shape of the round rod are matched with the size and shape of the inner wall of the circular through hole. The surface of the round rod is slidably connected to the inner wall of the circular through hole, and the surface of the rubber block is smaller than the inner wall of the circular through hole.

[0024] The effect achieved by the above-mentioned components is as follows: by arranging the round rod and the rubber block, the round rod can be located inside the round through hole to assist in intercepting the second ring moving toward the first ring, so that the second ring can be intercepted by the round rod when it moves close to the maximum contraction position of the spring, thereby reducing the squeezing force of the second ring on the spring, causing the spring to deform and affect normal use. At the same time, under the action of the rubber block, the rubber block can separate the round rod from the second ring, thereby reducing the situation where the round rod directly contacts the surface of the second ring and causes significant damage to its surface.

[0025] In summary, the beneficial effects of the present invention are:

[0026] By setting up a separation device, the piston rod and the cylinder body can be blocked, and at the same time, the damage to the surface of the cylinder body caused by the piston rod during the reset movement can be reduced, and the frequent collisions between the piston rod and the cylinder body during the reciprocating movement can be reduced, which can cause damage to the side of the cylinder body close to the piston rod, affecting the normal use of the cylinder body, thereby improving the use efficiency and life of the cylinder body.

[0027] By providing the connecting device, the partition device can be quickly assembled and disassembled between the cylinder bodies, thereby improving the use flexibility of the partition device and the convenience of subsequent maintenance or replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0029] Figure 2 The present invention Figure 1 Schematic diagram of the local three-dimensional structure;

[0030] Figure 3 The present invention Figure 2 Schematic diagram of the local three-dimensional structure;

[0031] Figure 4 The present invention Figure 3 Schematic diagram of the local three-dimensional structure;

[0032] Figure 5 The present invention Figure 4 Schematic diagram of the local three-dimensional structure;

[0033] Figure 6 The present invention Figure 3 Schematic diagram of the local three-dimensional structure;

[0034] Figure 7 The present invention Figure 2 Another perspective of the picture;

[0035] Figure 8 The present invention Figure 7 Schematic diagram of the local three-dimensional structure;

[0036] Fig. 9 The present invention Figure 8 Schematic diagram of the local three-dimensional structure;

[0037] Fig.10 The present invention Figure 1 Schematic diagram of the local three-dimensional structure.

[0038] Description of reference numerals:

[0039] 1. Cylinder body; 2. Piston rod; 3. Separating device; 31. First circular ring; 32. Connecting block; 33. Spring; 34. Circular hole block; 35. Second circular ring; 36. Threaded hole; 37. Rectangular hole; 38. Reinforcing rib; 39. Reinforcement block; 310. Positioning rod; 311. Limiting plate; 312. Circular hole frame; 313. Bolt; 314. Arc plate; 315. Rubber pad; 316. Rectangular block; 4. Connecting device; 41. Circular hole column; 42. Support block; 43. Arc rod; 44. Cylindrical block; 45. Round rod; 46. Rubber block; 47. Screw; 48. Nut; 49. Through hole. DETAILED DESCRIPTION

[0040] Reference Figure 1-6As shown, the present embodiment discloses a buffer hydraulic cylinder, comprising a cylinder body 1, a piston rod 2 is arranged on one side of the cylinder body 1, a separator 3 is arranged on the side of the cylinder body 1 close to the piston rod 2, the separator 3 comprises a first circular ring 31 and an arc plate 314, a connecting device 4 is arranged between the first circular ring 31 and the cylinder body 1, the first circular ring 31 is sleeved on the surface of the cylinder body 1, the inner wall of the first circular ring 31 is larger than the surface of the piston rod 2, a connecting block 32 is fixedly connected to one side of the first circular ring 31, a spring 33 is fixedly connected to one side of the connecting block 32, a circular hole block 34 is fixedly connected to one end of the spring 33 away from the connecting block 32, a second circular ring 35 is fixedly connected to one side of the circular hole block 34, the second circular ring 35 is sleeved on the surfaces of the cylinder body 1 and the piston rod 2, and the second circular ring 35 is sleeved on the surfaces of the cylinder body 1 and the piston rod 2. The inner wall of the circular ring 35 is larger than the surface of the piston rod 2, and a threaded hole 36 is provided on one side of the second circular ring 35. A rubber pad 315 is fixedly connected to one side of the circular arc plate 314, and a circular hole frame 312 is fixedly connected to one side of the circular arc plate 314. A bolt 313 is provided inside the circular hole frame 312, and the surface of the bolt 313 is threadedly connected to the inner wall of the threaded hole 36. The size and shape of the inner wall of the circular arc plate 314 are adapted to the size and shape of the surface of the piston rod 2. By setting the separation device 3, the first circular ring 31 is first manually moved, so that the first circular ring 31 drives the connecting block 32 to move, so that the connecting block 32 drives the spring 33 to move, so that the spring 33 drives the circular hole block 34 to move, so that the circular hole block 34 drives the second circular ring 35 to move. When the first circular ring When the circular plate 31 moves to the position where it is sleeved on the surface of the cylinder body 1, the second circular ring 35 is sleeved on the surfaces of the cylinder body 1 and the piston rod 2. At this time, the first circular ring 31 is connected and fixed to the cylinder body 1 through the connecting device 4, and the circular arc plate 314 is manually moved at the same time, so that the circular arc plate 314 drives the rubber pad 315 to move, and the circular arc plate 314 drives the circular hole frame 312 to move. When the circular arc plate 314 moves to the position where it fits with the surface of the second circular ring 35, the inner wall of the circular arc plate 314 is close to the surface of the piston rod 2, so that the inner wall of the circular hole frame 312 coincides with the inner wall of the threaded hole 36. At this time, the bolt 313 is rotated by a tool so that the bolt 313 is rotated into the inside of the circular hole frame 312 and the threaded hole 36 to fix the circular hole frame 312 and the circular arc plate 314 in position, so that The rubber pad 315 and the arc plate 314 are located on the side of the piston rod 2 close to the cylinder body 1. When the piston rod 2 is reset along the inside of the cylinder body 1 toward the cylinder body 1, the piston rod 2 and the rubber pad 315 are preferentially contacted and squeezed, so that the rubber pad 315 squeezes the arc plate 314, and the arc plate 314 squeezes the second ring 35, so that the second ring 35 slides along the surface of the cylinder body 1 toward the surface of the cylinder body 1. Under the limiting action of the first ring 31 on the spring 33, the second ring 35 squeezes the spring 33. When the second ring 35 moves to the maximum contraction position of the spring 33, the spring 33 limits the second ring 35, so that the second ring 35 limits the arc plate 314 and the rubber pad 315.The second ring 35 cooperates with the arc plate 314 and the rubber pad 315 to separate the piston rod 2 from the cylinder body 1, and the elasticity and deformation of the rubber pad 315 can reduce the compression damage caused by the piston rod 2 to the arc plate 314 and the second ring 35. At the same time, when the piston rod 2 moves away from the cylinder body 1, the reaction force of the spring 33 can drive the second ring 35 to reset, thereby achieving continuous isolation between the cylinder body 1 and the piston rod 2, reducing the frequent collision between the piston rod 2 and the cylinder body 1 during reciprocating movement, causing damage to the side of the cylinder body 1 close to the piston rod 2, affecting the normal use of the cylinder body 1, and improving the use efficiency and life of the cylinder body 1.

[0041] Reference Figure 3-6 As shown, the present embodiment discloses that a positioning rod 310 is fixedly connected to one side of the connecting block 32 close to the spring 33, and the surface of the positioning rod 310 is slidably connected to the inner wall of the circular hole block 34, and the positioning rod 310 is located inside the spring 33. By setting the positioning rod 310, the positioning rod 310 can be located inside the spring 33 to assist in limiting the spring 33, thereby reducing the situation in which the spring 33 is deformed and affects the use of the spring 33 due to a large bending during the telescopic movement. At the same time, the positioning rod 310 is located inside the circular hole block 34 to limit the second ring 35, thereby reducing the second ring The ring 35 may shake or slightly rotate during the left and right movement, which improves the stability of the second ring 35. The end of the positioning rod 310 away from the connecting block 32 is fixedly connected to the limiting plate 311. The surface of the limiting plate 311 is larger than the inner wall of the circular hole block 34. By setting the limiting plate 311, the limiting plate 311 can intercept the circular hole block 34 moving left and right along the surface of the positioning rod 310, thereby reducing the separation of the circular hole block 34 from the positioning rod 310 when moving left and right along the surface of the positioning rod 310, thereby improving the movement stability of the circular hole block 34 along the surface of the positioning rod 310.

[0042] Reference Figure 3-6 As shown, the present embodiment discloses that a rectangular block 316 is fixedly connected to one side of the circular hole frame 312, and a rectangular hole 37 is opened on the inner wall of the second circular ring 35 near the threaded hole 36. The surface size and shape of the rectangular block 316 are adapted to the size and shape of the inner wall of the rectangular hole 37. By providing the rectangular block 316 and the rectangular hole 37, when the arc plate 314 moves to a position fitting with the surface of the second circular ring 35, the rectangular block 316 can be inserted into the rectangular hole 37 to assist in limiting the circular hole block 34, thereby reducing the shaking of the circular hole frame 312 when personnel rotate the bolt 313. At the same time, personnel can quickly calibrate the positions of the arc plate 314 and the circular hole frame 312 by inserting the rectangular block 316 into the rectangular hole 37, thereby improving the efficiency and convenience of calibrating the inner wall of the circular hole frame 312 and the inner wall of the threaded hole 36.

[0043] Reference Figure 3-6As shown, the present embodiment discloses that a reinforcement block 39 is fixedly connected to one side of the circular hole block 34, and the reinforcement block 39 is fixedly connected to the second circular ring 35. By setting the reinforcement block 39, the reinforcement block 39 can strengthen the connection between the circular hole block 34 and the second circular ring 35, thereby improving the connection strength between the circular hole block 34 and the second circular ring 35, reducing the possibility of separation of the reinforcement block 39 from the second circular ring 35 when under pressure, thereby improving the connection stability between the circular hole block 34 and the second circular ring 35. A plurality of reinforcement ribs 38 are fixedly connected to one side of the second circular ring 35, and the plurality of reinforcement ribs 38 are arranged at equal distances. By setting the reinforcement ribs 38, the reinforcement ribs 38 can increase the strength of the second circular ring 35, thereby reducing the possibility of breakage or outward expansion of the second circular ring 35 when squeezed by the piston rod 2, thereby improving the force strength of the second circular ring 35, and increasing the blocking efficiency and stability of the second circular ring 35 to the piston rod 2.

[0044] Reference Figure 4-10 As shown, this embodiment discloses a connecting device 4 including a round hole column 41, the round hole column 41 is fixedly connected to the cylinder body 1, a screw 47 is fixedly connected to one side of the connecting block 32, a nut 48 is threadedly connected to the surface of the screw 47, the surface size and shape of the screw 47 are adapted to the size and shape of the inner wall of the round hole column 41, the surface of the nut 48 is larger than the inner wall of the round hole column 41, by setting the connecting device 4, firstly manually move the first ring 31, so that the first ring 31 drives the connecting block 32 to move, so that the connecting block 32 drives the screw 47 to move, when the first ring 31 moves to a position where it is sleeved on the surface of the cylinder body 1 and fits the surface of the round hole column 41, the round hole column 41 intercepts the first ring 31, so that the screw 47 is inserted into the inside of the round hole column 41, at this time, by working The tool rotates the nut 48 so that the nut 48 moves left and right along the surface of the screw rod 47. When the nut 48 moves to the position of extruding the surface of the circular hole column 41, the nut 48 pulls the screw rod 47 to move toward the circular hole column 41, so that the screw rod 47 drives the connecting block 32 to move toward the circular hole column 41, and the connecting block 32 drives the first circular ring 31 to move toward the circular hole column 41. When the connecting block 32 and the first circular ring 31 move to a position that is tightly fitted with the surface of the circular hole column 41, the first circular ring 31 is fixed in the position that is fitted with the surface of the circular hole column 41, thereby completing the rapid assembly of the partition device 3 and the cylinder body 1. At the same time, the partition device 3 and the cylinder body 1 can be quickly disassembled at a later stage, thereby improving the use flexibility of the partition device 3 and the convenience of later maintenance or replacement.

[0045] Reference Figure 4-10As shown, the present embodiment discloses that one side of the circular hole column 41 is fixedly connected with an arc rod 43, and the end of the arc rod 43 away from the circular hole column 41 is fixedly connected with a cylindrical block 44. By arranging the arc rod 43 and the cylindrical block 44, when the first circular ring 31 moves to a position closely fitting with the surface of the circular hole column 41, the cylindrical block 44 can fit with the surface of the first circular ring 31, so that the arc rod 43 cooperates with the cylindrical block 44 to provide auxiliary support for the side of the first circular ring 31 away from the circular hole column 41, thereby reducing the shaking of the side of the first circular ring 31 away from the circular hole column 41 during use after the first circular ring 31 is fixedly connected with the circular hole column 41, and further improving the first circular ring 31 and the circular hole. The connection stability of the column 41, a support block 42 is fixedly connected to the side of the round hole column 41 away from the piston rod 2, and the support block 42 is fixedly connected to the cylinder body 1. By setting the support block 42, the support block 42 can strengthen the connection between the round hole column 41 and the cylinder body 1, improve the connection strength between the round hole column 41 and the cylinder body 1, and reduce the separation of the round hole column 41 from the cylinder body 1 during use. At the same time, the support block 42 can provide auxiliary support to the side of the round hole column 41 away from the piston rod 2, reduce the round hole column 41 from tilting away from the piston rod 2 when it is subjected to the pressure brought by the first ring 31, and further improve the force stability of the round hole column 41.

[0046] Reference Figure 4-10 As shown, this embodiment discloses that a round rod 45 is fixedly connected to one side of the round hole column 41 close to the piston rod 2, and a rubber block 46 is fixedly connected to one end of the round rod 45 away from the round hole column 41. A round through hole 49 is opened on one side of the connecting block 32. The surface size and shape of the round rod 45 are adapted to the size and shape of the inner wall of the round through hole 49. The surface of the round rod 45 is slidably connected to the inner wall of the round through hole 49. The surface of the rubber block 46 is smaller than the inner wall of the round through hole 49. By arranging the round rod 45 and the rubber block 46, the round rod 45 can be located in the round through hole 49. The second ring 35 moving toward the first ring 31 is assisted in being intercepted internally, so that the second ring 35 can be intercepted by the round rod 45 when it moves close to the maximum contraction position of the spring 33, thereby reducing the squeezing force of the second ring 35 on the spring 33, causing the spring 33 to deform and affect normal use. At the same time, under the action of the rubber block 46, the rubber block 46 can separate the round rod 45 from the second ring 35, thereby reducing the situation where the round rod 45 directly contacts the surface of the second ring 35 and causes significant damage to its surface.

[0047] The working principle is: when the oil is pumped into the cylinder body 1 through the inlet of the cylinder body 1, the pressure exerted by the liquid on the piston pushes the piston rod 2 outward, and the piston rod 2 extends outward accordingly, realizing mechanical movement. Conversely, when the oil is discharged from the cylinder body 1, the piston will retreat inward, thereby realizing the reciprocating movement of the cylinder.

[0048] First, manually move the first ring 31 so that the first ring 31 drives the connecting block 32 to move, so that the connecting block 32 drives the spring 33 to move, so that the spring 33 drives the circular hole block 34 to move, so that the circular hole block 34 drives the second ring 35 to move, so that the connecting block 32 drives the screw 47 to move. When the first ring 31 moves to a position where it is sleeved on the surface of the cylinder body 1 and fits the surface of the circular hole column 41, the second ring 35 is sleeved on the surface of the cylinder body 1 and the piston rod 2, so that the circular hole column 41 intercepts the first ring 31, so that the screw 47 is inserted into the circular hole column 41. At this time, the nut 48 is rotated by a tool so that the nut 48 moves left and right along the surface of the screw 47. When the nut 48 moves to a position where it squeezes the surface of the circular hole column 41, the nut 48 pulls the screw 47 moves toward the direction close to the circular hole column 41, so that the screw 47 drives the connecting block 32 to move toward the direction close to the circular hole column 41, so that the connecting block 32 drives the first circular ring 31 to move toward the direction close to the circular hole column 41, and when the connecting block 32 and the first circular ring 31 move to a position that is closely fitted with the surface of the circular hole column 41, the first circular ring 31 is fixed at a position that is fitted with the surface of the circular hole column 41, thereby completing the rapid assembly of the partition device 3 and the cylinder body 1, and at this time, the circular arc plate 314 is manually moved, so that the circular arc plate 314 drives the rubber pad 315 to move, so that the circular arc plate 314 drives the circular hole frame 312 to move, so that the circular hole frame 312 drives the rectangular block 316 to move, and when the circular arc plate 314 moves to a position that is fitted with the surface of the second circular ring 35, the inner wall of the circular arc plate 314 is in contact with the cylinder body 1. The surface of the piston rod 2 is close to each other, so that the rectangular block 316 is inserted into the rectangular hole 37, so that the inner wall of the circular hole frame 312 coincides with the inner wall of the threaded hole 36. At this time, the bolt 313 is rotated by a tool so that the bolt 313 is rotated into the circular hole frame 312 and the threaded hole 36 to fix the circular hole frame 312 and the arc plate 314 in position, so that the rubber pad 315 and the arc plate 314 are located on the side of the piston rod 2 close to the cylinder body 1. When the piston rod 2 is reset along the inside of the cylinder body 1 toward the cylinder body 1, the piston rod 2 and the rubber pad 315 are preferentially contacted and squeezed, so that the rubber pad 315 squeezes the arc plate 314, and the arc plate 314 squeezes the second ring 35, so that the second ring 35 slides along the surface of the cylinder body 1 toward the surface of the cylinder body 1. The spring 33 is limited by the first ring 31, so that the second ring 35 squeezes the spring 33. When the second ring 35 moves to the maximum contraction position of the spring 33, the spring 33 limits the second ring 35, so that the second ring 35 limits the arc plate 314 and the rubber pad 315, so that the second ring 35 cooperates with the arc plate 314 and the rubber pad 315 to separate the piston rod 2 from the cylinder body 1, and the compression damage of the piston rod 2 to the arc plate 314 and the second ring 35 can be reduced under the elasticity and deformation of the rubber pad 315. At the same time, when the piston rod 2 moves away from the cylinder body 1, the reaction force of the spring 33 can drive the second ring 35 to reset, thereby achieving continuous blocking of the cylinder body 1 and the piston rod 2.

Claims

1. A buffer hydraulic cylinder, comprising a cylinder body (1), characterized in that: A piston rod (2) is arranged on one side of the cylinder body (1), and a separation device (3) is arranged on a side of the cylinder body (1) close to the piston rod (2). The separation device (3) comprises a first circular ring (31) and an arc plate (314). A connecting device (4) is arranged between the first circular ring (31) and the cylinder body (1). The first circular ring (31) is sleeved on the surface of the cylinder body (1), and the inner wall of the first circular ring (31) is larger than the surface of the piston rod (2). A connection block (32) is fixedly connected to one side of the first circular ring (31), and a spring (33) is fixedly connected to one side of the connection block (32). The end of the spring (33) away from the connection block (32) is fixedly connected to the circular ring (31). A hole block (34), one side of the hole block (34) is fixedly connected to a second ring (35), the second ring (35) is sleeved on the surface of the cylinder body (1) and the piston rod (2), the inner wall of the second ring (35) is larger than the surface of the piston rod (2), one side of the second ring (35) is provided with a threaded hole (36), one side of the arc plate (314) is fixedly connected to a rubber pad (315), one side of the arc plate (314) is fixedly connected to a hole frame (312), a bolt (313) is provided inside the hole frame (312), the surface of the bolt (313) is threadedly connected to the inner wall of the threaded hole (36), and the inner wall of the arc plate (314) is fixedly connected to the inner wall of the threaded hole (36). The size and shape of the connecting device (4) are adapted to the size and shape of the surface of the piston rod (2); the connecting device (4) comprises a round hole column (41), the round hole column (41) is fixedly connected to the cylinder body (1), a screw rod (47) is fixedly connected to one side of the connecting block (32), a nut (48) is threadedly connected to the surface of the screw rod (47), the size and shape of the surface of the screw rod (47) are adapted to the size and shape of the inner wall of the round hole column (41), and the surface of the nut (48) is larger than the inner wall of the round hole column (41); an arc rod (43) is fixedly connected to one side of the round hole column (41), and a cylindrical block (44) is fixedly connected to the end of the arc rod (43) away from the round hole column (41); A support block (42) is fixedly connected to the side of the circular hole column (41) away from the piston rod (2), and the support block (42) is fixedly connected to the cylinder body (1); a round rod (45) is fixedly connected to the side of the circular hole column (41) close to the piston rod (2), and a rubber block (46) is fixedly connected to the end of the round rod (45) away from the circular hole column (41); a circular through hole (49) is opened on one side of the connecting block (32); the surface size and shape of the round rod (45) are matched with the size and shape of the inner wall of the circular through hole (49); the surface of the round rod (45) is connected to the inner wall of the circular through hole (49) by sliding insertion; and the surface of the rubber block (46) is smaller than the inner wall of the circular through hole (49).

2. A buffer hydraulic cylinder according to claim 1, characterized in that: A positioning rod (310) is fixedly connected to one side of the connection block (32) close to the spring (33); the surface of the positioning rod (310) is slidably connected to the inner wall of the circular hole block (34); and the positioning rod (310) is located inside the spring (33).

3. A buffer hydraulic cylinder according to claim 2, characterized in that: One end of the positioning rod (310) away from the connecting block (32) is fixedly connected to a limiting plate (311), and the surface of the limiting plate (311) is larger than the inner wall of the circular hole block (34).

4. The buffer hydraulic cylinder according to claim 1, characterized in that: A rectangular block (316) is fixedly connected to one side of the circular hole frame (312); a rectangular hole (37) is provided on the inner wall of the second circular ring (35) close to the threaded hole (36); and the surface size and shape of the rectangular block (316) are adapted to the size and shape of the inner wall of the rectangular hole (37).

5. The buffer hydraulic cylinder according to claim 1, characterized in that: A reinforcement block (39) is fixedly connected to one side of the circular hole block (34), and the reinforcement block (39) is fixedly connected to the second circular ring (35).

6. The buffer hydraulic cylinder according to claim 1, characterized in that: A plurality of reinforcing ribs (38) are fixedly connected to one side of the second circular ring (35), and the plurality of reinforcing ribs (38) are arranged at equal distances.

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