Hydraulic oil cylinder convenient to maintain

Abstract

The hydraulic oil cylinder convenient to maintain relates to the technical field of hydraulic cylinder equipment and comprises a cylinder body and an installation seat, a cylinder cover is movably installed at the upper end of the cylinder body, a piston rod is arranged on the inner side of the upper end of the cylinder body, the piston rod is far away from the cylinder body and movably penetrates through the cylinder cover, and a connecting block is fixedly installed at the lower end of the cylinder body. By adopting the structure, the T-shaped blocks at the two positions of the mounting seat are extruded, so that the T-shaped blocks are connected with the second springs between the compression blocks and the elastic grooves, and meanwhile, the lower ends of the limiting blocks on the limiting sleeves relatively slide on the upper end surfaces of the T-shaped blocks until the limiting holes in the T-shaped blocks reach the lower end positions of the limiting blocks; the limiting block slides and falls into the limiting hole under the action of the gravity of the limiting block to limit the T-shaped block, and at the moment, the end, in the rectangular hole, of the T-shaped block pushes and presses the movable plate through the through hole, so that the clamping block on the movable plate retreats back into the mounting cavity, and the cylinder body can be conveniently taken out of the mounting base for maintenance.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic cylinder equipment, and particularly relates to a hydraulic oil cylinder which is easy to maintain. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When using it to achieve reciprocating motion, the reduction device can be eliminated, there is no transmission gap, and the motion is smooth, so it is widely used in the hydraulic systems of various machines. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device depend on the specific application, and other devices are indispensable. When the hydraulic cylinder is maintained, it is first necessary to remove the hydraulic cylinder from the installation point, while the traditional installation method is mainly to fix it at the installation position through the mounting hole at the bottom of the cylinder body with screws.

[0003] A Chinese patent with announcement number CN220134339U discloses a hydraulic cylinder with a mounting seat, including a base, a hydraulic cylinder body is fixedly connected to the top of the base, a mounting body is movably connected to one side of the base, a through groove is opened on one side of the base, a movable block is movably connected inside the through groove, and a clamping block is fixedly connected to one side of the movable block.

[0004] However, the hydraulic cylinder in the above-mentioned prior art is convenient for subsequent disassembly and maintenance of the hydraulic cylinder by means of the set through groove one, movable block, card block, card groove, spring one, fixing rod, vertical plate and matching groove. However, in the actual use and operation process, we found that there are still some technical deficiencies. For example, when installing the cylinder, it is necessary to synchronously pull the vertical plate first so that the movable block connected to the vertical plate compresses the spring and the card block retracts into the through groove one. Then, after inserting the lower end of the cylinder body and loosening the two vertical plates, the card block on one side of the movable block is inserted into the card groove of the base for fixation. Moreover, when disassembling, it is also necessary to pull the vertical plate so that the card block and the card groove are separated and then the cylinder body is removed from the base. Since at least two people are required to cooperate in the operation for disassembly, the disassembly and maintenance efficiency of the cylinder is affected. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the utility model is to provide a hydraulic cylinder that is easy to maintain, so as to solve the problems mentioned in the background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A hydraulic cylinder convenient for maintenance, comprising a cylinder body and a mounting seat. The upper end of the cylinder body is movably installed with a cylinder head. The inner side of the upper end of the cylinder body is provided with a piston rod, and the piston rod movably penetrates through the cylinder head away from the cylinder body. The lower end of the cylinder body is fixedly installed with a connecting block. The inner side of the connecting block is symmetrically provided with a connecting mechanism. The upper end of the mounting seat is provided with a connecting groove, and the mounting seat is inserted into the connecting block through the connecting groove. A clamping groove is opened in the inner side of the connecting groove, and the connecting block is clamped with the clamping groove through the connecting mechanism. A pushing mechanism is arranged on the outer side of the mounting seat, and a mounting hole is opened in the inner side of the mounting seat;

[0008] The connecting mechanism includes a mounting cavity symmetrically opened in the inner side of the connecting block. The inner side of the mounting cavity is symmetrically and fixedly installed with sliding rods. The outer side of the sliding rods is slidably connected with a movable plate. One side of the movable plate is fixedly installed with a clamping block. The clamping end of the clamping block slidably penetrates through the cavity wall of the mounting cavity and is clamped with the clamping groove. A first spring is sleeved on the outer side of the sliding rod, and the first spring is arranged on the side of the movable plate away from the clamping block. A through hole is opened on one side of the inner wall of the mounting cavity close to the clamping block, and the pushing mechanism is movably connected with the movable plate;

[0009] The pushing mechanism includes a rectangular hole and a T-shaped block. The rectangular holes are symmetrically opened in the inner side of the connecting groove. One end of the T-shaped block is slidably connected in the rectangular hole. Elastic grooves are symmetrically opened on the outer wall of the mounting seat. A second spring is fixedly installed in the inner side of the elastic groove, and the other end of the second spring is fixedly installed with the T-shaped block. A limiting hole is opened at the upper end of the T-shaped block. A limiting sleeve is fixedly connected to the outer side of the mounting seat. A limiting block is slidably connected in the inner side of the limiting sleeve. One end of the T-shaped block extending into the rectangular hole is movably connected with the movable plate.

[0010] As a preferred technical solution, the lower end wall of the orifice of the through hole extends through the bottom of the connecting block, and the clamping end of the clamping block is in a bevel shape towards the side of the connecting groove.

[0011] As a preferred technical solution, first sliding grooves are symmetrically opened in the inner side of the mounting cavity, and the end of the movable plate is slidably connected in the first sliding grooves.

[0012] As a preferred technical solution, a sleeve is fixedly installed in the inner side of the elastic groove. A sleeve rod is fixedly installed on the outer side of the T-shaped block. One end of the sleeve rod is slidably connected in the inner side of the sleeve, and both the sleeve rod and the sleeve movably penetrate through the middle of the second spring.

[0013] As a preferred technical solution, second sliding grooves are symmetrically opened on the outer side of the limiting block, and one side of the limiting block is slidably connected in the second sliding grooves of the limiting sleeve.

[0014] As a preferred technical solution, the shape of the limiting block is L-shaped, and the lower end of the limiting block is movably connected with the limiting hole.

[0015] In summary, the utility model mainly has the following beneficial effects:

[0016] First, insert the lower end of the cylinder block into the connection groove of the mounting seat. During the insertion process, the connection blocks at the lower end of the cylinder block enter the connection groove. At the same time, the clamping blocks at both places of the connection block are squeezed by the notch of the connection groove at the clamping ends, so that the movable plate connected to the clamping block slides inside the installation cavity and squeezes the first spring. When the clamping end of the clamping block corresponds to the position of the clamping groove, the first spring performs elastic reset to push the clamping block connected to the movable plate into the clamping groove to complete the fixation, so that the hydraulic cylinder can be quickly installed conveniently;

[0017] Second, simultaneously squeeze the T-shaped blocks at both places of the mounting seat, so that the second spring between the T-shaped block connection compression and the elastic groove is compressed. At the same time, the lower end of the limiting block on the limiting sleeve slides relative to the upper end surface of the T-shaped block. Until the limiting hole on the T-shaped block reaches the position of the lower end of the limiting block, the limiting block slides and falls into the limiting hole under the action of its own gravity to limit the T-shaped block. At this time, the end of the T-shaped block in the rectangular hole pushes the movable plate through the through hole, so that the clamping block on the movable plate retracts into the installation cavity. Therefore, the cylinder block can be easily removed from the mounting seat for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the utility model;

[0019] Figure 2 is an exploded view of the utility model;

[0020] Figure 3 is a schematic structural diagram of the connection mechanism of the utility model;

[0021] Figure 4 is the Figure 3 enlarged view of part A in the utility model.

[0022] Reference numerals: 1, cylinder block; 2, cylinder head; 3, piston rod; 4, mounting seat; 5, mounting hole; 6, connection block; 7, connection mechanism; 701, installation cavity; 702, movable plate; 703, clamping block; 704, sliding rod; 705, first spring; 706, through hole; 8, connection groove; 9, first sliding groove; 10, clamping groove; 11, pushing mechanism; 111, rectangular hole; 112, limiting sleeve; 113, limiting block; 114, elastic groove; 115, second spring; 116, T-shaped block; 117, limiting hole; 12, second sliding groove; 13, sleeve; 14, sleeve rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Reference Figures 1 to 4, a hydraulic cylinder convenient for maintenance described in this embodiment includes a cylinder block 1 and a mounting seat 4. The upper end of the cylinder block 1 is movably installed with a cylinder head 2. The inner side of the upper end of the cylinder block 1 is provided with a piston rod 3. The piston rod 3 movably penetrates through the cylinder head 2 away from the cylinder block 1. The lower end of the cylinder block 1 is fixedly installed with a connecting block 6. The inner side of the connecting block 6 is symmetrically provided with a connecting mechanism 7. The upper end of the mounting seat 4 is provided with a connecting groove 8. The mounting seat 4 is inserted into the connecting block 6 through the connecting groove 8. A clamping groove 10 is opened on the inner side of the connecting groove 8. The connecting block 6 is clamped with the clamping groove 10 through the connecting mechanism 7. A pushing mechanism 11 is arranged on the outer side of the mounting seat 4. An installation hole 5 is opened on the inner side of the mounting seat 4. The mounting seat 4 can be conveniently installed and fixed at the use position by using the installation hole 5. The cylinder head 2 is installed on the cylinder block 1 through a pull rod and a nut and can be disassembled and maintained. This is a relatively mature prior art means and is well-known to the general public, so it will not be elaborated here;

[0024] The connecting mechanism 7 includes an installation cavity 701. The installation cavities 701 are symmetrically opened on the inner side of the connecting block 6. The inner sides of the installation cavities 701 are symmetrically and fixedly installed with sliding rods 704. The outer sides of the sliding rods 704 are slidably connected with movable plates 702. One side of the movable plate 702 is fixedly installed with a clamping block 703. The clamping end of the clamping block 703 slidably penetrates through the cavity wall of the installation cavity 701 and is clamped with the clamping groove 10. The outer sides of the sliding rods 704 are sleeved with first springs 705. The first springs 705 are arranged on the side of the movable plate 702 away from the clamping block 703. A through hole 706 is opened on one side of the inner wall of the installation cavity 701 close to the clamping block 703. The pushing mechanism 11 is movably connected with the movable plate 702. When installing the cylinder block 1 and the mounting seat 4 at the installation point, insert the lower end of the cylinder block 1 into the connecting groove 8 of the mounting seat 4. During the insertion process, the connecting block 6 at the lower end of the cylinder block 1 enters the connecting groove 8. At the same time, the inclined surfaces of the clamping ends of the two clamping blocks 703 of the connecting block 6 are squeezed by the notch of the connecting groove 8, so that the movable plate 702 connected with the clamping block 703 slides inside the installation cavity 701 and squeezes the first spring 705. When the clamping end of the clamping block 703 corresponds to the position of the clamping groove 10, the first spring 705 elastically resets and pushes the clamping block 703 connected with the movable plate 702 to be clamped into the clamping groove 10 to complete the fixation. Thus, the rapid installation operation of the hydraulic cylinder can be facilitated; in disassembly and assembly, multiple people are not required to cooperate, and a single person can quickly complete the disassembly, installation and maintenance tasks, and it is also more convenient to use;

[0025] The pushing mechanism 11 includes a rectangular hole 111 and a T-shaped block 116. The rectangular hole 111 is symmetrically opened inside the connecting groove 8. One end of the T-shaped block 116 is slidably connected inside the rectangular hole 111. Elastic grooves 114 are symmetrically opened on the outer wall of the mounting seat 4. A second spring 115 is fixedly installed inside the elastic groove 114. The other end of the second spring 115 is fixedly installed with the T-shaped block 116. A limiting hole 117 is opened at the upper end of the T-shaped block 116. A limiting sleeve 112 is fixedly connected to the outside of the mounting seat 4. A limiting block 113 is slidably connected inside the limiting sleeve 112. One end of the T-shaped block 116 extending into the rectangular hole 111 is movably connected to the movable plate 702. When disassembling the cylinder block 1 of this hydraulic cylinder, only need to simultaneously squeeze the T-shaped blocks 116 at two places of the mounting seat 4, so that the second spring 115 between the T-shaped block 116 and the elastic groove 114 is compressed. At the same time, the lower end of the limiting block 113 on the limiting sleeve 112 slides relatively on the upper end surface of the T-shaped block 116 until the limiting hole 117 on the T-shaped block 116 reaches the position of the lower end of the limiting block 113. The limiting block 113 slides and falls into the limiting hole 117 under its own gravity to limit the T-shaped block 116. At this time, one end of the T-shaped block 116 in the rectangular hole 111 pushes the movable plate 702 through the through hole 706, so that the clamping block 703 on the movable plate 702 retracts into the installation cavity 701. Therefore, the cylinder block 1 can be conveniently taken out from the mounting seat 4 for maintenance; when reinstalling and maintaining the cylinder block 1, lift the limiting block 113 so that the limiting block 113 is separated from the limiting hole 117. Without the limitation of the T-shaped block 116, the second spring 115 resets and the T-shaped block 116 also resets into the rectangular hole 111 accordingly.

[0026] Reference Figure 3 , the lower end wall of the orifice of the through hole 706 extends through the bottom of the connecting block 6. The inserting end of the clamping block 703 is inclined towards one side of the connecting groove 8. First sliding grooves 9 are symmetrically opened inside the installation cavity 701. The end of the movable plate 702 is slidably connected inside the first sliding groove 9. By extending the lower end of the through hole 706 to the bottom of the connecting block 6, the disassembly operation of the cylinder block 1 can be facilitated, and the movable plate 702 slides at the first sliding groove 9 inside the installation cavity 701, which can improve the stability of the movable plate 702.

[0027] Reference Figure 4 , a sleeve 13 is fixedly installed inside the elastic groove 114. A sleeve rod 14 is fixedly installed on the outside of the T-shaped block 116. One end of the sleeve rod 14 is slidably connected inside the sleeve 13. Both the sleeve rod 14 and the sleeve 13 movably penetrate through the middle of the second spring 115. By using the sliding connection of the sleeve rod 14 and the sleeve 13, and the sleeve rod 14 and the sleeve 13 penetrate through the second spring 115, a certain protection effect can be achieved on the second spring 115.

[0028] Reference Figure 4, second sliding grooves 12 are symmetrically formed on the outer side of the limiting block 113. One side of the limiting block 113 is slidably connected to the inner side of the second sliding groove 12 of the limiting sleeve 112. The limiting block 113 is in an L shape. The lower end of the limiting block 113 is movably connected to the limiting hole 117. By sliding one side of the limiting block 113 on the inner side of the second sliding groove 12 of the limiting sleeve 112, it is convenient to perform sliding limit on the limiting block 113 at the limiting sleeve 112, avoiding the limiting block 113 from disengaging from the limiting sleeve 112 barrel; a sliding block that slides relative to the second sliding groove 12 is also provided on the limiting sleeve 112.

[0029] Principle of use and advantages: When installing the cylinder block 1 and the mounting seat 4 at the installation point, insert the lower end of the cylinder block 1 into the connection groove 8 of the mounting seat 4. During the insertion process, the connection block 6 at the lower end of the cylinder block 1 enters the connection groove 8. At the same time, the clamping blocks 703 at both places of the connection block 6 are squeezed by the slot opening of the connection groove 8 at the insertion end surface, so that the movable plate 702 connected to the clamping block 703 slides inside the installation cavity 701 and squeezes the first spring 705. When the insertion end of the clamping block 703 corresponds to the position of the clamping slot 10, the first spring 705 performs elastic reset to push the clamping block 703 connected to the movable plate 702 into the clamping slot 10 to complete the fixation;

[0030] When disassembling the cylinder block 1 of the hydraulic cylinder, only need to simultaneously squeeze the T-shaped blocks 116 at both places of the mounting seat 4, so that the second spring 115 between the T-shaped blocks 116 connected to the compression and the elastic groove 114 is compressed. At the same time, the lower end of the limiting block 113 on the limiting sleeve 112 slides relative to the upper end surface of the T-shaped block 116 until the limiting hole 117 on the T-shaped block 116 reaches the position of the lower end of the limiting block 113. The limiting block 113 slides and falls into the limiting hole 117 under its own gravity to limit the T-shaped block 116. At this time, the end of the T-shaped block 116 in the rectangular hole 111 pushes the movable plate 702 through the through hole 706, so that the clamping block 703 on the movable plate 702 retracts into the installation cavity 701. Therefore, it is convenient to take out the cylinder block 1 from the mounting seat 4.

Claims

1. A hydraulic cylinder that is easy to maintain, characterized in that: The invention comprises a cylinder body (1) and a mounting seat (4), wherein a cylinder head (2) is movably mounted on the upper end of the cylinder body (1), a piston rod (3) is arranged on the inner side of the upper end of the cylinder body (1), and the piston rod (3) is movably penetrated through the cylinder head (2) away from the cylinder body (1), a connecting block (6) is fixedly mounted on the lower end of the cylinder body (1), and a connecting mechanism (7) is symmetrically arranged on the inner side of the connecting block (6), a connecting groove (8) is provided on the upper end of the mounting seat (4), the mounting seat (4) is plugged into the connecting block (6) through the connecting groove (8), a clamping groove (10) is provided on the inner side of the connecting groove (8), the connecting block (6) is clamped into the clamping groove (10) through the connecting mechanism (7), a pushing mechanism (11) is arranged on the outer side of the mounting seat (4), and a mounting hole (5) is provided on the inner side of the mounting seat (4); The connecting mechanism (7) comprises an installation cavity (701), wherein the installation cavity (701) is symmetrically arranged on the inner side of the connecting block (6), a sliding rod (704) is symmetrically fixedly arranged on the inner side of the installation cavity (701), a movable plate (702) is slidably connected to the outer side of the sliding rod (704), a clamping block (703) is fixedly arranged on one side of the movable plate (702), the clamping end of the clamping block (703) slides through the cavity wall of the installation cavity (701) and is clamped in the clamping groove (10), a first spring (705) is sleeved on the outer side of the sliding rod (704), the first spring (705) is arranged on the side of the movable plate (702) away from the clamping block (703), a through hole (706) is arranged on the inner wall side of the installation cavity (701) close to the clamping block (703), and the pushing mechanism (11) and the movable plate (702) are movably connected.

2. The hydraulic cylinder easy to maintain according to claim 1, characterized in that: The lower end wall of the opening of the through hole (706) extends through the bottom of the connecting block (6), and the clamping end of the clamping block (703) is inclined on one side facing the connecting groove (8).

3. The hydraulic cylinder easy to maintain according to claim 1, characterized in that: A first sliding groove (9) is symmetrically provided on the inner side of the installation cavity (701), and the end of the movable plate (702) is slidably connected to the inner side of the first sliding groove (9).

4. The hydraulic cylinder easy to maintain according to claim 1, characterized in that: The push mechanism (11) comprises a rectangular hole (111) and a T-block (116). The rectangular hole (111) is symmetrically arranged inside the connecting groove (8). One end of the T-block (116) is slidably connected to the inside of the rectangular hole (111). The outer wall of the mounting seat (4) is symmetrically provided with an elastic groove (114). A second spring (115) is fixedly installed inside the elastic groove (114). The other end of the second spring (115) is fixedly installed with the T-block (116). A limiting hole (117) is arranged at the upper end of the T-block (116). The outer side of the mounting seat (4) is fixedly connected to the limiting sleeve (112). The inner side of the limiting sleeve (112) is slidably connected to the limiting block (113). One end of the T-block (116) extending into the rectangular hole (111) is movably connected to the movable plate (702).

5. The hydraulic cylinder easy to maintain according to claim 4, characterized in that: A sleeve (13) is fixedly mounted on the inner side of the elastic groove (114), a sleeve rod (14) is fixedly mounted on the outer side of the T-block (116), one end of the sleeve rod (14) is slidably connected to the inner side of the sleeve (13), and the sleeve rod (14) and the sleeve (13) are both movable and penetrate the middle part of the second spring (115).

6. The hydraulic cylinder easy to maintain according to claim 4, characterized in that: A second sliding groove (12) is symmetrically provided on the outer side of the limiting block (113), and one side of the limiting block (113) is slidably connected to the inner side of the second sliding groove (12) of the limiting sleeve (112).

7. The hydraulic cylinder easy to maintain according to claim 4, characterized in that: The limiting block (113) is in an L-shape, and the lower end of the limiting block (113) and the limiting hole (117) are movably connected.

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