Tensioning sleeve pin shaft structure for lubrication maintenance
By setting oil injection ports and oil outlets on the pins and using internal oil delivery channels to inject lubricating oil into the tightening sleeve, the problem of severe wear of the pins is solved, and the replacement frequency is high, which achieves lubricating maintenance and extends the service life of the equipment.
Patent Information
- Application Number
- CN202422293529.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-19
AI Technical Summary
In the prior art, the pin shaft needs to be replaced when it is severely worn, resulting in a high frequency of replacement parts and a lack of effective lubrication and maintenance methods, which affects the service life of the equipment.
A lubrication and maintenance pin structure is designed. By setting oil injection ports and oil outlets on the pin body, and using the internal oil delivery channel, lubricating oil is injected into the tightening sleeve, and lubricating and impurity cleaning are achieved through the design of the slot.
By filling oil lubrication and tightening sleeves, the wear and replacement frequency is reduced, the service life of the equipment is extended, and the need for frequent equipment shutdown and maintenance is avoided.
Smart Images
Figure CN223019150U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to an auxiliary device for a grab, and particularly relates to a tension sleeve pin structure for lubrication maintenance. Background Art
[0002] A pin is mainly used for the hinge between a fixed part and a movable part. At present, pins usually adopt the following two forms: one is that an oil injection port and an oil outlet are provided on the pin, and oil can be injected regularly for maintenance (an automatic oil injection device can also be installed), which can not only ensure lubrication, but also remove impurities in the shaft hole by pressurized oil injection. However, the equipment needs to be shut down for maintenance frequently, which affects the work efficiency, and when the wear of the pin can no longer meet the use conditions, the whole pin needs to be replaced.
[0003] The other is to install a tension sleeve on the pin. During the normal use of the equipment, the tension sleeve is worn to protect the pin body. With this structure, it is not necessary to shut down for maintenance frequently. When the tension sleeve is worn to the extent that it can no longer meet the use conditions, only the tension sleeve needs to be removed and replaced, while the pin body can continue to be used.
[0004] However, compared with the first form, although the second form has higher equipment efficiency (lower maintenance frequency), due to the lack of lubrication between the shaft holes, the tension sleeve needs to be replaced when the wear is serious, so the frequency of replacing spare parts becomes higher. Summary of the Utility Model
[0005] The technical problem to be solved by the utility model is to provide a tension sleeve pin structure for lubrication maintenance, which reduces wear and replacement frequency and prolongs the service life by injecting oil to lubricate the tension sleeve.
[0006] In order to solve the above technical problem, the utility model adopts the following technical scheme:
[0007] A tension sleeve pin structure for lubrication maintenance includes a fixed part, a movable part, and a pin assembly for hinging the two. The pin assembly includes a pin body and a tension sleeve sleeved on the pin body. An oil injection port and an oil outlet are opened on the pin body and are connected by an oil delivery channel arranged inside the pin body. The tension sleeve has a discontinuous notch. The oil injection port is arranged on the end face of the pin body, the oil outlet is arranged on the circumferential surface of the pin body and is located inside the notch, and the tension sleeve is fixed to the pin body through a fastener.
[0008] The notch is inclined axially.
[0009] The fastener is a positioning pin.
[0010] A tensioning sleeve pin structure for lubrication maintenance using the present utility model combines oil injection with the tensioning sleeve. By opening the oil outlet in the notch of the tensioning sleeve, lubrication maintenance can be carried out during equipment idle time or normal working periods without deliberately shutting down the equipment for maintenance. The notch can serve both as an oil outlet channel and an oil storage space, and can also store a certain amount of lubricating oil, enabling the lubrication effect to continue for a certain period and changing the situation of non-lubricated wear between the shaft and the hole. In addition, by injecting oil under pressure, impurities in the shaft hole can be cleaned simultaneously, changing the current situation where the shaft hole can only be cleaned when the pin is removed and the tensioning sleeve is replaced. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The present utility model will be described in detail below in conjunction with the drawings and specific embodiments:
[0012] Figure 1 is a perspective view of the pin assembly of the present utility model;
[0013] Figure 2 is a structural view of the pin assembly of the present utility model;
[0014] Figure 3 is Figure 2 a top view of;
[0015] Figure 4 is along Figure 2 the sectional view taken along line A-A in;
[0016] Figure 5 is a structural view of the tensioning sleeve pin structure of the present utility model applied to the grab bucket embodiment;
[0017] Figure 6 is Figure 5 a sectional view of A in. SPECIFIC EMBODIMENTS
[0018] A tensioning sleeve pin structure for lubrication maintenance of the present utility model includes a fixed part, a movable part, and a pin assembly 1 for hinging the two, as shown in Figures 1-4As shown, the pin assembly 1 includes a pin body 11, a tension sleeve 12 sleeved on the pin body 11, an oil filling port 13 and an oil outlet 14 are provided on the pin body 11, and are connected by an oil delivery channel 15 provided inside the pin body 11, and a disconnected notch 16 is provided on the tension sleeve 12 (such as the notch provided in the model DIN 1499, etc.), and the oil filling port 13 is provided on the end surface of the pin body 11, and the oil outlet 14 is provided on the circumferential surface of the pin body 11 and is located in the notch 16, and the tension sleeve 12 is fixed to the pin body 11 by a fastener 17. Usually, the notch 16 of the tension sleeve 12 is designed to be inclined in the axial direction of the pin body 11. Of course, the notch 16 can also be designed to be straight along the axial direction. The fastener 17 can be fixed by a plurality of positioning pins inserted radially to ensure that the tension sleeve 12 and the pin body 11 will not rotate relative to each other and move axially. In addition, the oil delivery channel 15 may be as follows Figure 2 The structure in which the oil filling port 13 and the oil outlet port 14 are directly connected in an oblique direction may also be a structure in which the oil filling port 13 and the oil outlet port 14 are directly connected in an oblique direction.
[0019] The lubricated and maintained tension sleeve 12 pin structure of the utility model is suitable for any occasions requiring pin hinge. Figures 5-6 As shown, it is an embodiment in which the upper support beam 2 (fixed part) and the support rod 3 (movable part) are hingedly connected to each other for use in a grab bucket device.
[0020] To sum up, the lubricated and maintained tension sleeve 12 pin structure of the utility model can combine the advantages of the previous two pin forms, which not only improves the efficiency of equipment use, but also extends the service life of the equipment, avoids the need for frequent maintenance of the equipment, and is not only suitable for grab equipment, but also for the hinges of other equipment.
[0021] However, those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.
Claims
1. A lubricated and maintained tension sleeve pin structure, comprising a fixed part, a movable part and a pin assembly for articulating the two, the pin assembly comprising a pin body, a tension sleeve sleeved on the pin body, an oil filling port and an oil outlet opened on the pin body, and connected by an oil delivery channel arranged inside the pin body, and a disconnected notch on the tension sleeve, characterized in that: The oil filling port is arranged on the end surface of the pin shaft body, the oil outlet is arranged on the peripheral surface of the pin shaft body and is located in the notch, and the tension sleeve is fixed to the pin shaft body through a fastener.
2. The lubrication-maintained tension sleeve pin structure according to claim 1, characterized in that: The notch is arranged obliquely in the axial direction.
3. The lubrication-maintained tension sleeve pin structure according to claim 1, characterized in that: The fastener is a positioning pin.