Hydraulic cylinder buffering structure capable of reducing seat lining impact

Abstract

The utility model provides a hydraulic cylinder buffering structure capable of reducing seat lining impact. The hydraulic cylinder buffering structure comprises a main machine frame, a supporting sleeve, a hydraulic cylinder assembly, a rod sealing ring and a seat lining. A flange is arranged on the upper portion of the periphery of the main machine frame, and the convex edge and the flange are close to each other. A seat lining is arranged at the abutting part of the upper part of the main frame and the inner side of the supporting sleeve and is used for relieving impact; a cylinder body of the hydraulic cylinder assembly is installed on the main rack and located below the flange, and the top end of a cylinder rod of the hydraulic cylinder assembly sequentially penetrates through the flange and the protruding edge and then is fixed to the protruding edge to serve as a power mechanism for driving the supporting sleeve to move relative to the main rack. The cylinder rod is sleeved with the rod sealing ring, the whole rod sealing ring is located between the protruding edge and the flange, and the length of the rod sealing ring is set according to the stroke of the supporting sleeve so that the supporting sleeve can make contact with the base lining after the rod sealing ring is compressed by the set length. The buffering structure has the advantages that impact force is relieved, the service life of the seat lining is prolonged, operation is more stable, and the maintenance frequency is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of crushers, in particular to a hydraulic cylinder buffer structure for reducing the impact of a seat liner. Background Art

[0002] The main structure of the cone crusher consists of liner part, main frame part, support sleeve part, adjustment sleeve part, transmission part, eccentric sleeve part, bowl-shaped bearing part, crushing cone part, safety cylinder part, pulley part, etc.

[0003] like Figure 1 As shown, during normal operation, the hydraulic cylinder body and the main frame 1 are hinged through the pin shaft 2, and the cylinder rod of the hydraulic cylinder 3 is relatively fixed to the support sleeve 5 through the spherical washer 3 and the spherical nut 4. There is a nut under the support sleeve to limit it to avoid abnormal vibration of the support sleeve. During operation, the rod chamber of the hydraulic cylinder assembly 7 is filled with fluid, and a certain pressure makes the support sleeve 5 relatively fit with the main frame 1; in order to avoid direct contact between the support sleeve 5 and the main frame 1, which may cause more serious damage to the contact surface caused by long-term work and require replacement of the entire support sleeve or adjustment sleeve, a circle of aluminum bronze liner 6 is welded on the main frame at the contact position between the main frame 1 and the support sleeve 5. When overloaded, the impact between the support sleeve 5 and the main frame 1 is absorbed by the aluminum bronze seat liner 6. At that time, normal production can be achieved by simply replacing the aluminum bronze liner 6.

[0004] The working conditions of multi-cylinder cone crushers are severe, and severe conditions such as overload and iron passing often occur. Therefore, when the support sleeve, adjustment sleeve, and mortar wall are reset after iron passing, the aluminum bronze liner 6 must be impacted multiple times to restore it to its original position. Multiple impacts cause the aluminum bronze liner 6 to compress itself, and when it is compressed to a certain position, it will fail, causing the support sleeve 5 to contact with the main frame 1 at other positions, thereby causing irreversible damage. Therefore, the aluminum bronze liner 6 needs to be replaced frequently, resulting in a huge waste of production costs.

[0005] The reason is that the hydraulic cylinder 3 is fixed far away from the hinge position of the support sleeve spherical washer group and the main frame pin shaft. Therefore, the falling position of the support sleeve may not be completely accurate when overloaded or over-iron occurs, and multiple rising and falling actions are required to reset it normally. Each falling point will cause the contact surface of the support sleeve to form local pits and depressions on the aluminum-bronze liner. Too many pits and depressions will cause the reset position of the support sleeve to shift, seriously affecting the stability of the equipment. At this time, a new aluminum-bronze liner 6 needs to be replaced to ensure normal production.

[0006] In summary, the traditional solution of providing an aluminum-bronze liner has limited ability to solve the impact problem, and its structure needs to be systematically adjusted to reduce the impact of the aluminum-bronze liner. Utility Model Content

[0007] The purpose of the utility model is to address the deficiencies of the existing technology and thus provide a hydraulic cylinder buffer structure that reduces seat liner impact and alleviates impact force, thereby extending the life of the seat liner, making operation more stable, and reducing maintenance frequency.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is: a hydraulic cylinder buffer structure for reducing the impact of the seat liner, comprising a main frame, a support sleeve, a hydraulic cylinder assembly, a rod sealing ring and a seat liner;

[0009] A convex edge is provided at the lower portion of the outer periphery of the support sleeve, and a flange is provided at the upper portion of the outer periphery of the main frame, wherein the convex edge and the flange are close to each other;

[0010] The seat lining is provided at the junction between the upper portion of the main frame and the inner side of the support sleeve to alleviate impact;

[0011] The cylinder body of the hydraulic cylinder assembly is mounted on the main frame and is located below the flange. The top end of the cylinder rod of the hydraulic cylinder assembly passes through the flange and the flange in sequence and is fixed to the flange, serving as a power mechanism for driving the support sleeve to move relative to the main frame.

[0012] The rod sealing ring is sleeved on the cylinder rod, and the rod sealing ring is located as a whole between the ridge and the flange. The length of the rod sealing ring is set according to the stroke of the support sleeve so that after the rod sealing ring is compressed to a set length, the support sleeve contacts the seat liner.

[0013] Preferably, a seat cushion, a spherical washer seat and a spherical washer are provided below the flange of the main frame corresponding to the hydraulic cylinder assembly.

[0014] Preferably, a seat cushion, a spherical washer seat, a spherical washer and a locking nut are provided on the upper portion of the convex edge of the support sleeve corresponding to the cylinder rod of the hydraulic cylinder assembly.

[0015] Preferably, the hydraulic cylinder assembly further includes an accumulator connected to the hydraulic cylinder.

[0016] Preferably, the rod sealing ring is made of closed-cell sponge rubber.

[0017] Preferably, at least two groups of hydraulic cylinder assemblies and a plurality of guide rods are provided in the circumferential direction of the flange and the convex edge, and the rod sealing ring is installed at the same position of each hydraulic cylinder assembly and the plurality of guide rods.

[0018] Preferably, the seat liner is an aluminum bronze liner.

[0019] Preferably, the main frame and the support sleeve are components of a multi-cylinder cone crusher.

[0020] Preferably, the stroke of the support sleeve is less than two-thirds of the maximum stroke of the hydraulic cylinder assembly.

[0021] Preferably, the hydraulic cylinder assembly is fixed to the lower end of the main frame flange or the side of the main frame.

[0022] The present invention has substantial features and progress compared to the prior art. Specifically, the present invention has the following advantages:

[0023] 1. Through structural design, the connection points between the support sleeve and the main frame for installing the hydraulic cylinder assembly are brought closer, eliminating the pin structure in the traditional solution. The hydraulic cylinder assembly is directly driven, and the hydraulic cylinder stroke is greatly reduced, ensuring operational stability. The shorter installation position allows the hydraulic cylinder rod to extend and retract more vertically when the equipment passes iron or is overloaded. At the same time, the structure is more concise, reducing production processes and lowering production costs.

[0024] 2. By setting the rod sealing ring, the rod sealing ring is first subjected to force when the support sleeve falls and resets, and the impact force generated by the support sleeve falling and resetting is pre-absorbed. When it is reset into place, the impact load has been completely absorbed by the rod sealing ring. At this time, there is no additional external force when the support sleeve contacts the main frame, so there will be no excessive impact on the aluminum bronze liner, which prolongs the service life of the aluminum bronze liner and reduces the overall maintenance frequency.

[0025] 3. The rod sealing ring fully surrounds the rod of the hydraulic cylinder and closely contacts the lower part of the support sleeve and the upper part of the main frame, so that the hydraulic cylinder rod is in a sealed state, preventing dust and impurities from contaminating and corroding the hydraulic cylinder rod, thereby reducing the maintenance frequency of the hydraulic cylinder assembly.

[0026] 4. Spherical washer assembly structures are set on the upper part of the convex edge of the support sleeve and the lower part of the flange of the main frame, which can make the hydraulic cylinder more straight when working and more accurately reset when the support sleeve falls. It can ensure that the hydraulic cylinder is subjected to linear force under severe impact loads, so as to maximize the efficiency of the hydraulic cylinder without compromise.

[0027] 5. With a larger hydraulic cylinder diameter, higher pressure settings can be achieved, making the equipment more convenient, effective, and quick to use. The time taken to handle abnormal situations such as iron passing and overload is shortened, achieving an efficient operation mode and achieving better expectations. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of a hydraulic cylinder buffer structure in the prior art.

[0029] Figure 2 The utility model is a structural principle diagram of a hydraulic cylinder buffer structure for reducing the impact of a seat liner.

[0030] 1. Main frame; 2. Pin; 3. Spherical washer; 4. Spherical nut; 5. Support sleeve; 6. Aluminum bronze liner; 7. Hydraulic cylinder assembly;

[0031] 11. Rod sealing ring; 12. Flange; 13. Lug; 14. Seat; 15. Spherical washer seat; 16. Spherical washer; 17. Accumulator; 18. Cylinder body; 19. Cylinder rod; 20. Lock nut. DETAILED DESCRIPTION

[0032] The technical solution of the present utility model is further described in detail below through specific implementation methods.

[0033] like Figure 2 As shown, taking the structure of a multi-cylinder cone crusher as an example, a hydraulic cylinder buffer structure for reducing the impact of the seat liner includes a main frame 1, a support sleeve 5, a hydraulic cylinder assembly 7, a rod sealing ring 11 and a seat liner. In this embodiment, the seat liner is an aluminum bronze liner 6.

[0034] A flange 13 is provided on the lower portion of the outer periphery of the support sleeve 5, and a flange 12 is provided on the upper portion of the outer periphery of the main frame 1. The flange 13 and the flange 12 are close to each other. Compared with the pin-type transmission method in the traditional solution, the connection point between the support sleeve 5 and the main frame 1 for installing the hydraulic cylinder assembly 7 is closer, the operation of the hydraulic cylinder assembly 7 is easier to control, the stroke is shorter than that of the traditional solution, and the efficiency is higher.

[0035] The seat liner is provided at the place where the upper portion of the main frame 1 abuts against the inner side of the support sleeve 5 . In this embodiment, the seat liner is an aluminum bronze liner 6 for alleviating impact.

[0036] The cylinder body 18 of the hydraulic cylinder assembly 7 is installed on the main frame 1 and is located below the flange 12. It can be fixed to the lower end of the main frame flange or the side of the main frame; the hydraulic cylinder assembly also includes an accumulator 17 connected to the hydraulic cylinder. The top end of the cylinder rod 19 of the hydraulic cylinder assembly 7 passes through the flange 12 and the flange 13 in sequence and is fixed to the flange 13, serving as a power mechanism for driving the support sleeve 5 to move relative to the main frame 1.

[0037] The rod sealing ring 11 is sleeved on the cylinder rod 19, and the rod sealing ring 11 is located as a whole between the flange 13 and the flange 12. The length of the rod sealing ring 11 is set according to the stroke of the support sleeve 5 so that after the rod sealing ring 11 is compressed to the set length, the support sleeve 5 contacts the aluminum bronze liner 6.

[0038] In this embodiment, the material of the rod sealing ring 11 is closed-cell sponge rubber, so that the rod seal is first subjected to force when the support sleeve falls and resets, and the impact force generated by the support sleeve falling and resetting is pre-absorbed. When it is reset into place, the impact load has been completely absorbed by the rod seal. At this time, there is no additional external force when the support sleeve and the main frame are in contact, so there will be no excessive impact on the aluminum bronze gasket, which extends the service life of the aluminum bronze gasket. At the same time, the rod sealing sleeve is on the hydraulic cylinder rod, in close contact with the lower part of the support sleeve and the upper part of the main frame, so that the hydraulic cylinder rod is in a sealed state, avoiding contamination and corrosion of the hydraulic cylinder rod by dust and impurities; the spherical gasket structure on the upper part of the support sleeve and the lower part of the main frame can ensure that the hydraulic cylinder is subjected to linear force under severe impact loads, so that the efficiency of the hydraulic cylinder is maximized without compromise.

[0039] A seat pad 14, a spherical washer seat 15 and a spherical washer 16 are provided below the flange 12 of the main frame 1 corresponding to the hydraulic cylinder assembly 7, and a seat pad 14, a spherical washer seat 15, a spherical washer 16 and a locking nut 20 are provided on the upper part of the convex edge 13 of the support sleeve 5 corresponding to the cylinder rod 19 of the hydraulic cylinder assembly 7.

[0040] As a whole, at least two groups of hydraulic cylinder assemblies and several guide rods are arranged in the circumferential direction of the flange 12 and the convex edge 13. The rod sealing ring is installed at the same position of each hydraulic cylinder assembly and the guide rods. In this embodiment, the number of rod sealing rings 11 is 12 in total.

[0041] The stroke of the support sleeve is less than two-thirds of the maximum stroke of the hydraulic cylinder assembly. In a more preferred embodiment, it can be set to within one-half.

[0042] Working principle description:

[0043] During operation, the hydraulic cylinder assembly 7 tightens the support sleeve 5 on the aluminum bronze liner 6 of the main frame 1 through the spherical washer group. When overloaded or iron-passing occurs, the support sleeve 5, the adjustment sleeve, and the mortar wall move upward due to the action of the unbreakable objects. At the same time, the cylinder rod 19 of the hydraulic cylinder assembly 7 extends, and the hydraulic oil flows into the accumulator 17. When the iron-passing or overload ends, the hydraulic oil in the accumulator 17 flows back into the rod cavity of the hydraulic cylinder, causing the hydraulic cylinder rod to retract. At this time, the support sleeve 5 assembly is tightened and moves downward. When it moves to a certain position, the rod sealing ring 11 first aligns with the support sleeve 5 and The flange of the main frame 1 is in contact, and 12 sets of rod sealing rings evenly distributed around the circumference are subjected to the force generated by the falling support sleeve 5 and the hydraulic pressure of the hydraulic cylinder. The rod sealing ring 11 is compressed to bear the force. When it is compressed to a certain amount, most of the force of the falling support sleeve has been absorbed by the rod seal. At this time, the support sleeve begins to contact the aluminum bronze liner of the main frame. The force at this time is completely within the bearing range of the aluminum bronze liner, realizing multiple and long-term use without damage; the shorter hydraulic cylinder installation position can reduce the damage to the hydraulic cylinder caused by impact, thereby increasing the service life of the hydraulic cylinder.

[0044] Finally, it should be noted that: The above describes in detail the preferred embodiments of this patent, but this patent is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A hydraulic cylinder buffer structure for reducing seat liner impact, characterized by: Includes main frame, support sleeve, hydraulic cylinder assembly, rod seal ring and seat liner; A convex edge is provided at the lower portion of the outer periphery of the support sleeve, and a flange is provided at the upper portion of the outer periphery of the main frame, wherein the convex edge and the flange are close to each other; The seat lining is provided at the junction between the upper portion of the main frame and the inner side of the support sleeve to alleviate impact; The cylinder body of the hydraulic cylinder assembly is mounted on the main frame and is located below the flange. The top end of the cylinder rod of the hydraulic cylinder assembly passes through the flange and the flange in sequence and is fixed to the flange, serving as a power mechanism for driving the support sleeve to move relative to the main frame. The rod sealing ring is sleeved on the cylinder rod, and the rod sealing ring is located as a whole between the ridge and the flange. The length of the rod sealing ring is set according to the stroke of the support sleeve so that after the rod sealing ring is compressed to a set length, the support sleeve contacts the seat liner.

2. The hydraulic cylinder buffer structure for reducing seat liner impact according to claim 1, characterized in that: A seat cushion, a spherical washer seat and a spherical washer are arranged below the flange of the main frame corresponding to the hydraulic cylinder assembly.

3. The hydraulic cylinder buffer structure for reducing seat liner impact according to claim 1 or 2, characterized in that: A seat cushion, a spherical washer seat, a spherical washer and a locking nut are arranged on the upper portion of the convex edge of the support sleeve corresponding to the cylinder rod of the hydraulic cylinder assembly.

4. The hydraulic cylinder buffer structure for reducing seat liner impact according to claim 3, characterized in that: The hydraulic cylinder assembly further includes an accumulator connected to the hydraulic cylinder.

5. The hydraulic cylinder buffer structure for reducing seat liner impact according to claim 4, characterized in that: The rod sealing ring is made of closed-cell sponge rubber.

6. The hydraulic cylinder buffer structure for reducing seat liner impact according to claim 5, characterized in that: At least two groups of hydraulic cylinder assemblies and a plurality of guide rods are arranged in the circumferential direction of the flange and the convex edge, and the rod sealing ring is installed at the same position of each hydraulic cylinder assembly and the plurality of guide rods.

7. The hydraulic cylinder buffer structure for reducing seat liner impact according to claim 1, 2, 4, 5 or 6, characterized in that: The seat liner is an aluminum bronze liner.

8. The hydraulic cylinder buffer structure for reducing seat liner impact according to claim 1, 2, 4, 5 or 6, characterized in that: The main frame and the support sleeve are the components of the multi-cylinder cone crusher.

9. The hydraulic cylinder buffer structure for reducing seat liner impact according to claim 1, 2, 4, 5 or 6, characterized in that: The stroke of the support sleeve is less than two-thirds of the maximum stroke of the hydraulic cylinder assembly.

10. The hydraulic cylinder buffer structure for reducing seat liner impact according to claim 1, 2, 4, 5 or 6, characterized in that: The hydraulic cylinder assembly is fixed to the lower end of the main frame flange or the side of the main frame.

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