Oil cylinder for opening and closing bucket

Abstract

The utility model relates to an opening and closing bucket, in particular to an oil cylinder for an opening and closing bucket, which comprises an oil cylinder main body, a cylinder cover and a piston rod, the cylinder cover is arranged at the top end of the oil cylinder main body, a fastening pin connected with the oil cylinder main body penetrates through the edge of the cylinder cover, and the piston rod butted with the inside of the oil cylinder main body penetrates through the middle of the cylinder cover. And a piston oil seal sleeves the outer side of the lower portion of the piston rod, a sealing ring is embedded in the surface of the piston oil seal, and a mounting sleeve is arranged at the top end of the piston rod. The oil cylinder main body and the cylinder cover are preliminarily limited through the arranged limiting assembly, the auxiliary oil cylinder is assembled more stably, the position of the oil cylinder is not prone to deviation during assembly, the inner wall connecting position of the mounting sleeve can be quickly lubricated through the oil injection cavity and the through groove formed in the mounting sleeve, and the service life of the oil cylinder is prolonged. And friction and abrasion between the joints are reduced, so that the service life of the utility model is prolonged.

Description

Technical Field

[0001] The utility model relates to an opening and closing bucket, in particular to an oil cylinder for the opening and closing bucket. Background Art

[0002] An open and close bucket refers to a bucket on a loader or other equipment. During operation, the bucket is opened and closed by controlling a mechanical device, and the loading and handling of materials are completed in sequence. The power source of a common open and close bucket is generally an oil cylinder, which is used to open and close the bucket. The oil cylinder is a common hydraulic actuator that generates linear motion by injecting hydraulic oil into the cylinder body and applying pressure on the piston.

[0003] The cylinder body and cylinder head of the existing opening and closing bucket cylinder are locked and assembled by fastening pins. During assembly, the staff needs to press between the cylinder head and the cylinder body to ensure that the position does not shift during assembly, so as to assemble it stably. Summary of the invention

[0004] The utility model aims to provide an oil cylinder for opening and closing a bucket, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cylinder for opening and closing a bucket, comprising a cylinder body, a cylinder cover and a piston rod, a cylinder cover is arranged at the top of the cylinder body, and a fastening pin connected to the cylinder body passes through the edge of the cylinder cover, a piston rod docked in the cylinder body passes through the middle of the cylinder cover, and a piston oil seal is sleeved and installed on the lower outer side of the piston rod, a sealing ring is inlaid and installed on the surface of the piston oil seal, and a mounting sleeve is arranged at the top of the piston rod.

[0006] Preferably, a limiting assembly is provided between the cylinder body and the cylinder head, and the limiting assembly includes a docking groove, a mounting seat, a mounting groove, a mounting block, a limiting rod, a first spring, a limiting sleeve and a docking block, the docking groove is provided on both sides of the outer wall of the cylinder head, and the mounting seat is connected to both sides of the outer wall of the cylinder body.

[0007] Preferably, a mounting groove is formed at the bottom of the mounting seat, and a mounting block is inserted into the mounting groove. A limiting rod runs through the middle of the mounting block, and a first spring is sleeved on the outer side of the limiting rod.

[0008] Preferably, the two ends of the first spring are respectively connected to the mounting block and the inner wall of the mounting groove, the outer side of the mounting seat is provided with a limiting sleeve, and the bottom of the limiting sleeve is connected to the bottom of the mounting block, and the inner wall of the limiting sleeve is connected to a docking block.

[0009] Preferably, an oil filling cavity is provided inside the upper part of the installation sleeve, a through groove is provided on the inner wall of the installation sleeve close to the oil filling cavity, and an oil filling port is provided on the upper part of the installation sleeve close to the oil filling cavity.

[0010] Preferably, a movable groove is provided on one side surface of the mounting sleeve close to the oil filling port, and a movable block is inserted into the movable groove, a sealing block is connected to the upper end of the movable block, and the inner wall of the sealing block fits with the surface of the mounting sleeve.

[0011] Preferably, a guide rod passes through the middle of the movable block, and a second spring is sleeved on the outer side of the guide rod, one end of the second spring is connected to the movable block, and the other end of the second spring is connected to the movable groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. When assembling the utility model, first pull the limit sleeves on both sides of the oil cylinder body outward to the limit position, then dock the piston rod in the middle of the cylinder cover with the inside of the oil cylinder body, and push it inward to the limit position, so that the cylinder cover fits the surface of the oil cylinder body, and then loosen the pulled limit sleeve, and the loosened limit sleeve drives the docking block to automatically reset and insert it into the docking groove; the limit assembly is set to perform preliminary limit between the oil cylinder body and the cylinder cover, so that the auxiliary oil cylinder is assembled more stably, so that the position of the utility model is not easy to be offset during assembly;

[0014] 2. Pull the sealing block to the side close to the movable groove to the extreme position. At this time, the oil filling port is exposed, and lubricating oil can be injected into the oil filling cavity through the oil filling port. The lubricating oil injected into the oil filling cavity flows into the inner wall of the mounting sleeve and the internally connected rotating shaft through the through groove. After the lubrication operation is completed, the pulled sealing block is loosened, and the loosened sealing block can automatically reset to the initial position. The inner wall connection of the mounting sleeve can be quickly lubricated by the oil filling cavity and the through groove opened inside the mounting sleeve, thereby reducing friction and wear between the connections, thereby extending the service life of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0017] Figure 2It is a front cross-sectional structural schematic diagram of the limit assembly of the utility model;

[0018] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0019] Figure 4 It is a front view cross-sectional structural schematic diagram of the installation sleeve of the utility model.

[0020] In the figure: 1. Cylinder body; 2. Cylinder head; 3. Fastening pin; 4. Piston rod; 5. Piston oil seal; 6. Sealing ring; 7. Mounting sleeve; 8. Limiting assembly; 801. Docking groove; 802. Mounting seat; 803. Mounting groove; 804. Mounting block; 805. Limiting rod; 806. First spring; 807. Limiting sleeve; 808. Docking block; 9. Oil filling chamber; 10. Through groove; 11. Oil filling port; 12. Movable groove; 13. Movable block; 14. Sealing block; 15. Guide rod; 16. Second spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 3 The utility model provides a technical solution: a cylinder for opening and closing a bucket, comprising a cylinder body 1, a cylinder cover 2 and a piston rod 4, a cylinder cover 2 is arranged at the top of the cylinder body 1, and a fastening pin 3 connected to the cylinder body 1 is penetrated through the edge of the cylinder cover 2, a piston rod 4 docked in the cylinder body 1 is penetrated through the middle of the cylinder cover 2, and a piston oil seal 5 is sleeved and installed on the outer side below the piston rod 4, a sealing ring 6 is inlaid and installed on the surface of the piston oil seal 5, and a mounting sleeve 7 is arranged at the top of the piston rod 4.

[0023] A limit assembly 8 is provided between the oil cylinder body 1 and the cylinder head 2, and the limit assembly 8 includes a docking groove 801, a mounting seat 802, a mounting groove 803, a mounting block 804, a limit rod 805, a first spring 806, a limit sleeve 807 and a docking block 808. The docking groove 801 is provided on both sides of the outer wall of the cylinder head 2, and the mounting seat 802 is connected to both sides of the outer wall of the oil cylinder body 1; a mounting groove 803 is provided at the bottom of the mounting seat 802, and a mounting block 804 is inserted into the mounting groove 803, and the middle of the mounting block 804 passes through the limit rod 805, and the limit rod 80 5 is sleeved with a first spring 806; both ends of the first spring 806 are connected to the inner wall of the mounting block 804 and the mounting groove 803 respectively, the outer side of the mounting seat 802 is sleeved with a limiting sleeve 807, and the lower part of the limiting sleeve 807 is connected to the bottom of the mounting block 804, the inner wall of the limiting sleeve 807 is connected with a docking block 808, the docking block 808 penetrates the mounting seat 802 and docks with the docking groove 801, the mounting seat 802 is symmetrically distributed about the axis of the oil cylinder body 1, and the mounting block 804 forms a telescopic structure through the first spring 806 and the mounting groove 803.

[0024] In the specific implementation, when assembling the utility model, the limiting sleeves 807 on both sides of the oil cylinder body 1 are first pulled outward to the limit position, and the pulled limiting sleeves 807 drive the connected mounting blocks 804 and docking blocks 808 to move synchronously. The moving mounting blocks 804 move along the limiting rod 805 inside the mounting groove 803 and squeeze the first spring 806 sleeved on the outside of the limiting rod 805, and then the piston rod 4 in the middle of the cylinder cover 2 is docked inside the oil cylinder body 1 and pushed inward to the limit position. At this time, the cylinder cover 2 and the oil cylinder body are The surface of the oil cylinder body 1 is fitted together, and then the pulled limiting sleeve 807 is loosened. The loosened limiting sleeve 807 and the docking block 808 can automatically reset inward under the elastic force of the first spring 806, until the docking block 808 passes through the mounting seat 802 and is plugged into the docking groove 801, and finally the fastening pin 3 is passed through the cylinder cover 2 and the oil cylinder body 1 to lock them; the limiting assembly 8 is provided to perform preliminary limiting between the oil cylinder body 1 and the cylinder cover 2, and the auxiliary oil cylinder is assembled more stably, so that the position of the utility model is not easy to be offset during assembly.

[0025] See also Figure 1 , Figure 3 and Figure 4An oil filling chamber 9 is opened inside the upper part of the mounting sleeve 7, and a through groove 10 is opened on the inner wall of the mounting sleeve 7 near the oil filling chamber 9, and an oil filling port 11 is opened on the upper part of the mounting sleeve 7 near the oil filling chamber 9; a movable groove 12 is opened on the side surface of the mounting sleeve 7 near the oil filling port 11, and a movable block 13 is inserted into the movable groove 12, and a sealing block 14 is connected to the upper end of the movable block 13, and the inner wall of the sealing block 14 is in contact with the surface of the mounting sleeve 7; a guide rod 15 passes through the middle of the movable block 13, and a second spring 16 is sleeved on the outer side of the guide rod 15, one end of the second spring 16 is connected to the movable block 13, and the other end of the second spring 16 is connected to the movable groove 12, and the movable block 13 forms a telescopic structure with the movable groove 12 through the second spring 16, and the through grooves 10 are distributed at equal intervals.

[0026] In the specific implementation, the sealing block 14 is pulled toward the side close to the movable groove 12, and the pulled sealing block 14 drives the connected movable block 13 to move along the guide rod 15 inside the movable groove 12, and the movable block 13 squeezes and retracts the second spring 16 sleeved on the outside of the guide rod 15 until the sealing plate 14 is pulled to the limit position. At this time, the oil filling port 11 is exposed to the outside, and the lubricating oil can be injected into the oil filling cavity 9 through the oil filling port 11. The lubricating oil injected into the oil filling cavity 9 flows into the installation cavity 9 through the through groove 10. The lubrication operation is completed between the inner wall of the sleeve 7 and the internally connected rotating shaft. After the lubricating oil is injected, the pulled sealing block 14 is loosened. The loosened sealing block 14 and the movable block 13 can automatically reset outward under the elastic force of the second spring 16, so that the sealing block 14 is blocked on the outside of the oil filling port 11. The inner wall connection of the installation sleeve 7 can be quickly lubricated through the oil filling cavity 9 and the through groove 10 opened inside the installation sleeve 7, thereby reducing the friction and wear between the connections, thereby extending the service life of the utility model.

[0027] To sum up, when the utility model is used, the two ends of the cylinder are respectively assembled and docked with the opening and closing bucket, and high-pressure hydraulic oil is injected into the inside of the cylinder body 1, and the piston rod 4 is pushed upward under the action of the piston oil seal 5. After the high-pressure hydraulic oil inside the cylinder body 1 is emptied, the piston rod 4 is pushed downward, and the movement direction and speed of the piston are controlled by controlling the inflow and outflow of hydraulic oil, thereby realizing the opening and closing of the bucket. This is the prior art and will not be elaborated here. The contents not described in detail in this description belong to the prior art known to professional and technical personnel in this field.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cylinder for opening and closing a bucket, comprising a cylinder body (1), a cylinder cover (2) and a piston rod (4), characterized in that: A cylinder cover (2) is arranged at the top of the oil cylinder body (1), and a fastening pin (3) connected to the oil cylinder body (1) is passed through the edge of the cylinder cover (2), a piston rod (4) connected to the inside of the oil cylinder body (1) is passed through the middle of the cylinder cover (2), and a piston oil seal (5) is sleeved and installed on the lower outer side of the piston rod (4), a sealing ring (6) is embedded and installed on the surface of the piston oil seal (5), and a mounting sleeve (7) is arranged at the top of the piston rod (4).

2. The hydraulic cylinder for opening and closing a bucket according to claim 1, characterized in that: A limit assembly (8) is provided between the oil cylinder body (1) and the cylinder cover (2), and the limit assembly (8) comprises a docking groove (801), a mounting seat (802), a mounting groove (803), a mounting block (804), a limit rod (805), a first spring (806), a limit sleeve (807) and a docking block (808); the docking groove (801) is provided on both sides of the outer wall of the cylinder cover (2), and the mounting seat (802) is connected to both sides of the outer wall of the oil cylinder body (1).

3. The hydraulic cylinder for opening and closing a bucket according to claim 2, characterized in that: The bottom of the mounting seat (802) is provided with a mounting groove (803), and a mounting block (804) is inserted into the mounting groove (803). A limiting rod (805) runs through the middle of the mounting block (804), and a first spring (806) is sleeved on the outer side of the limiting rod (805).

4. The hydraulic cylinder for opening and closing a bucket according to claim 3, characterized in that: The two ends of the first spring (806) are respectively connected to the mounting block (804) and the inner wall of the mounting groove (803); a limiting sleeve (807) is sleeved on the outer side of the mounting seat (802); the lower side of the limiting sleeve (807) is connected to the bottom of the mounting block (804); and the inner wall of the limiting sleeve (807) is connected to a docking block (808).

5. The hydraulic cylinder for opening and closing a bucket according to claim 1, characterized in that: An oil injection cavity (9) is provided inside the upper part of the installation sleeve (7), a through groove (10) is provided on the inner wall of the installation sleeve (7) close to the oil injection cavity (9), and an oil injection port (11) is provided on the upper part of the installation sleeve (7) close to the oil injection cavity (9).

6. The hydraulic cylinder for opening and closing a bucket according to claim 5, characterized in that: A movable groove (12) is provided on a surface of one side of the installation sleeve (7) close to the oil filling port (11), and a movable block (13) is inserted into the movable groove (12). A sealing block (14) is connected to the upper end of the movable block (13), and the inner wall of the sealing block (14) is in contact with the surface of the installation sleeve (7).

7. The hydraulic cylinder for opening and closing a bucket according to claim 6, characterized in that: A guide rod (15) passes through the middle of the movable block (13), and a second spring (16) is sleeved on the outer side of the guide rod (15), one end of the second spring (16) is connected to the movable block (13), and the other end of the second spring (16) is connected to the movable groove (12).

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