Slide lubricating structure for telescopic arm device, telescopic arm device and engineering machinery
By introducing connecting parts and oil injection channels into the lubrication structure of the slider in engineering machinery, lubricating oil can be directly injected, solving the problem of time-consuming and labor-intensive slider lubrication, and improving lubrication efficiency and slider service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZOOMLION INTELLIGENT ACCESS MASCH CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-14
AI Technical Summary
In existing construction machinery, the lubrication of the slider is time-consuming, labor-intensive, and inefficient, which affects the performance and service life of the telescopic boom device.
Design a slider lubrication structure that connects to the arm section via a connector and sets up an oil injection channel to allow lubricating oil to be directly injected into the sliding mating surface of the slider, eliminating the need to disassemble the slider.
It achieves time-saving and labor-saving operation of slider lubrication, improves lubrication efficiency, reduces friction, and extends the service life of slider and arm.
Smart Images
Figure CN224493560U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering machinery technology, specifically to a slider lubrication structure for a telescopic boom device, a telescopic boom device, and engineering machinery. Background Technology
[0002] Telescopic booms on construction machinery can perform functions such as lifting, shoveling, forking, hoisting, and suction, and are widely used in material handling and high-altitude operations on construction sites, in agriculture and animal husbandry, and in various industries. Different operational processes require the telescopic boom to extend, retract, and adjust its amplitude. The extension and retraction of the telescopic boom relies on the support and relative movement of the upper, lower, and side sliders of the boom segment. Therefore, the reliability of the slider function directly affects the overall performance of the telescopic boom forklift. Currently, lubrication of the sliders in construction machinery is achieved through periodic application of lubricating oil.
[0003] The slider is connected to the boom section by fasteners. When lubricating the slider, the fasteners need to be removed for the slider at the front of the boom section, the slider needs to be taken out, lubricant applied and then reinstalled. For the slider at the rear of the boom section, the boom section also needs to be removed. The lubrication operation of the slider is time-consuming, labor-intensive and inefficient. Utility Model Content
[0004] The purpose of this invention is to overcome the problems of time-consuming, labor-intensive, and inefficient operation of existing slider lubrication systems, and to provide a slider lubrication structure for telescopic boom devices, telescopic boom devices, and engineering machinery. This slider lubrication structure has the technical advantages of simple structure, time-saving and labor-saving lubrication operation, and high efficiency.
[0005] To achieve the above objectives, this utility model provides a slider lubrication structure for a telescopic boom device, comprising: a slider, which is disposed within the interval between two adjacent boom sections, the slider being connected to one of the boom sections and slidingly engaging with the other boom section; and a connector, which passes through one of the boom sections and is inserted into the slider to achieve connection, the connector being provided with an oil injection channel, the oil injection channel being connected to the external sliding engagement surface of the slider.
[0006] In some embodiments, the slider has a connecting hole extending through it along its axial direction, and the end of the connector inserted into the connecting hole has an axial gap with the sliding mating surface of the other arm segment.
[0007] In some embodiments, the connector is threadedly connected to the slider.
[0008] In some embodiments, a first nut is embedded in the connecting hole, and the connector is threadedly connected to the first nut.
[0009] In some embodiments, the connector is provided with an external thread, and the inner wall of the connecting hole is provided with an internal thread that mates with the external thread.
[0010] In some embodiments, the connector includes: a stud, one end of which passes through one of the arms and is inserted into the connecting hole, the stud having an oil injection channel extending through it axially; and a second nut, the second nut being threadedly connected to the other end of the stud to lock the stud to one of the arms.
[0011] In some embodiments, the sliding mating surface is provided with an oil groove.
[0012] In some embodiments, the slider lubrication structure further includes an oil injection component for injecting oil into the oil injection channel; and / or the slider lubrication structure further includes a seal for sealing the oil inlet of the oil injection channel.
[0013] The second aspect of this utility model provides a telescopic arm device, which includes a plurality of arm sections connected in sequence, and a slider lubrication structure as described in any of the above-mentioned schemes is provided between adjacent arm sections.
[0014] The third aspect of this utility model provides an engineering machinery, including the telescopic boom device described in the above-described scheme.
[0015] Through the above technical solution, the slider is fixedly mounted on one of the boom sections by a connector and slides with the other boom section. The slider enables sliding contact between two adjacent boom sections, thereby achieving mutual support and extension / retraction of multiple boom sections in the telescopic boom device. The connector connects the slider to the boom section, and external lubricating oil can be injected from the outside into the sliding contact surface of the slider through the oil injection channel of the connector. Lubrication of the slider at the front and rear of the boom section can be achieved without disassembling the slider or boom section. The structure is simple, and the lubrication operation is time-saving, labor-saving, and highly efficient. The lubrication of the slider can reduce the friction between the sliding contact surface of the slider and the boom section, extending the service life of the slider and the boom section. Attached Figure Description
[0016] Figure 1 This is a structural schematic diagram of the telescopic arm device disclosed in this utility model;
[0017] Figure 2 yes Figure 1 Sectional view at point AA;
[0018] Figure 3 yes Figure 2 A magnified view of a section at point C; and
[0019] Figure 4 yes Figure 1Sectional view at point BB.
[0020] Explanation of reference numerals in the attached figures
[0021] 1. Slider; 11. Sliding mating surface; 12. Connecting hole; 2. Connecting piece; 21. Oil injection channel; 22. Stud; 23. Second nut; 3. First nut; 4. Washer; 5. Oil injection piece; 6. Arm section; 61. Basic arm; 62. Moving arm. Detailed Implementation
[0022] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.
[0023] In this utility model, unless otherwise stated, the directional terms "inner" and "outer" refer to the inner and outer sides of the brachial joint.
[0024] See Figures 1 to 4 This utility model provides a slider lubrication structure for a telescopic boom device, including a slider 1 and a connector 2. The slider 1 is used to be set in the interval between two adjacent boom sections 6. The slider 1 is connected to one of the boom sections 6 and slides with the other boom section 6. The connector 2 is used to pass through one of the boom sections 6 and be inserted into the slider 1 to achieve connection. The connector 2 is provided with an oil injection channel 21, which is connected to the external sliding contact surface 11 of the slider 1. The slider 1 is fixedly mounted on one of the boom sections 6 via the connector 2 and slides with the other boom section 6. The slider 1 enables the sliding engagement between two adjacent boom sections 6, thereby achieving mutual support and extension / retraction of multiple boom sections 6 in the telescopic boom device. The connector 2 connects the slider 1 to the boom section 6, and external lubricating oil can be injected into the sliding engagement surface 11 of the slider 1 through the oil injection channel 21 of the connector 2. Lubrication of the slider 1 at the front and rear of the boom section 6 can be achieved without disassembling the slider 1 or the boom section 6. The structure is simple, and the lubrication operation is time-saving, labor-saving, and highly efficient. The lubrication of the slider 1 reduces the friction between the sliding engagement surface 11 of the slider 1 and the boom section 6, extending the service life of the slider 1 and the boom section 6.
[0025] In some embodiments, the interval between two adjacent arm segments 6 refers to the interval between two adjacent arm segments 6 in a direction perpendicular to the axial direction of the arm segment 6.
[0026] In some embodiments, in two adjacent boom sections 6, the front part of the outer boom section 6 is provided with a slider lubrication structure, through which a slider 1 is installed inside the boom section 6 from the outside and lubricated; the rear part of the inner boom section 6 is provided with a slider lubrication structure, through which a slider 1 is installed outside the boom section 6 from the inside and lubricated, so as to achieve a sliding fit between the inner boom section 6 and the outer boom section 6. The slider 1 at the front of the outer boom section 6 is lubricated externally; when the boom section 6 is retracted to the rear of the telescopic boom device, the slider 1 at the rear of the inner boom section 6 is lubricated internally.
[0027] To ensure a stable sliding fit between two adjacent arm sections 6, multiple slider lubrication structures are provided at circumferential intervals at the front and rear of the arm section 6.
[0028] See Figure 2 and Figure 3 To prevent the connecting piece 2 from wearing down the other arm section 6 when two adjacent arm sections 6 slide together, the slider 1 has a connecting hole 12 extending through it along its axial direction. The end of the connecting piece 2 inserted into the connecting hole 12 has an axial gap with the sliding mating surface 11 of the other arm section 6. This axial gap between the connecting piece 2 and the sliding mating surface 11 not only separates the connecting piece 2 from the other arm section 6, preventing direct contact and wear, thus ensuring the service life of the arm section 6, but also allows for the storage of lubricating oil, increasing the lubrication time of the slider 1.
[0029] In some embodiments, the connector 2 is detachably connected to the slider 1.
[0030] In some embodiments, the connector 2 is threadedly connected to the slider 1. The connector 2 passes through one of the arm sections 6 and is threadedly connected to the slider 1, enabling convenient and quick disassembly and installation of the connector 2 and the slider 1.
[0031] See Figure 2 and Figure 3 In some embodiments, a first nut 3 is embedded in the connecting hole 12, and the connector 2 is threadedly connected to the first nut 3. The first nut 3 embedded in the connecting hole 12 of the slider 1 can be threadedly connected to the connector 2, thereby realizing the threaded connection between the connector 2 and the slider 1.
[0032] In some embodiments, the first nut 3 is fixed in the connecting hole 12 of the slider 1 by die casting.
[0033] In some embodiments, the connector 2 is provided with an external thread, and the inner wall of the connecting hole 12 is provided with an internal thread that mates with the external thread. The external thread of the connector 2 can be threadedly connected with the internal thread of the connecting hole 12, thereby realizing the connection between the connector 2 and the slider 1.
[0034] In some embodiments, the connector 2 includes a stud 22 and a second nut 23. One end of the stud 22 passes through one of the arm sections 6 and is inserted into the connecting hole 12. The stud 22 has an oil injection channel 21 along its axial direction. The second nut 23 is threadedly connected to the other end of the stud 22 to lock the stud 22 to one of the arm sections 6. The threaded connection between the stud 22 and the first nut 3 or the internal thread of the connecting hole 12 enables the connection between the stud 22 and the slider 1. The threaded connection between the second nut 23 and the stud 22 locks the stud 22 onto one of the arm sections 6, achieving a fixed connection between the slider 1 and one of the arm sections 6 and ensuring the stability of the stud 22's position. At the same time, the oil injection channel 21 provided on the stud 22 enables the lubrication of the slider 1.
[0035] In some embodiments, the oil injection channel 21 inside the stud 22 is a φ6 hole.
[0036] In some embodiments, the connector 2 is a bolt that passes through one of the arm sections 6 and is threadedly connected to the internal thread of the first nut 3 or the connecting hole 12. The bolt is provided with an oil injection channel 21 along the axial direction.
[0037] It should be noted that the bolt has a connecting head and a shank. The shank of the bolt passes through one of the arm sections 6 and is inserted into the connecting hole 12. The head of the bolt abuts against one of the arm sections 6.
[0038] In some embodiments, the slider lubrication structure further includes a gasket 4 sleeved on the connector 2 and disposed between the connector 2 and one of the arm segments 6.
[0039] In some embodiments, the sliding mating surface 11 is provided with an oil groove. The oil groove stores lubricating oil in the slider 1, thereby improving the lubrication effect of the slider 1 and extending the lubrication time of the slider 1.
[0040] It should be noted that the shape and size of the oil groove are adjusted according to the lubrication requirements of slider 1.
[0041] In some embodiments, the oil groove on the sliding mating surface 11 is arc-shaped and is arranged along the circumference of the connecting hole 12.
[0042] To enable oil injection into the oil injection channel 21, the slider lubrication structure also includes an oil injection component 5, which is used to inject oil into the oil injection channel 21. The oil injection component 5 injects oil into the oil injection channel 21, so that the lubricating oil flows along the oil injection channel 21 onto the sliding mating surface 11, thereby achieving lubrication of the slider 1.
[0043] In some embodiments, the other end of the stud 22 is provided with an internal thread, and the oil injection component 5 is threadedly connected to the external thread of the other end of the stud 22.
[0044] In some embodiments, the oiling component 5 is an oil cup.
[0045] In some embodiments, the oil injection component 5 is connected to the oil inlet of the connector 2, which communicates with the outside.
[0046] In some embodiments, the oil injection component 5 is connected to the oil inlet of the connector 2 via a conversion connector, thereby improving the compatibility of the connection between the oil injection component 5 and the connector 2.
[0047] To prevent lubricating oil leakage from the slider 1, the slider lubrication structure also includes a seal for sealing the oil inlet of the oil filling channel 21 to the outside. After the oil filling component 5 completes the oil filling of the oil filling channel 21, the oil filling component 5 is removed from the connector 2, and the oil inlet is sealed by the seal, thereby preventing the lubricating oil in the slider 1 from flowing out through the oil filling channel 21 and preventing lubricating oil leakage.
[0048] The second aspect of this utility model provides a telescopic arm device, see [link to related document]. Figure 1 The telescopic boom device includes multiple boom sections 6 connected in sequence, with a slider lubrication structure between adjacent boom sections 6. The slider lubrication structure between adjacent boom sections 6 can support and guide the extension and retraction of the boom sections 6.
[0049] A third aspect of this utility model provides an engineering machinery, including the aforementioned telescopic boom device. The telescopic boom device comprises multiple boom sections 6, including a basic boom 61 and at least one movable boom 62. When the telescopic boom device includes the basic boom 61 and one movable boom 62, the basic boom 61 and the movable boom 62 are slidably engaged along the telescopic direction of the telescopic boom device. The tail of the basic boom 61 is quickly connected to the engineering machinery via a quick-connect device. The front of the basic boom 61 is provided with a slider lubrication structure, and a slider 1 is installed inside the basic boom 61 from the outside and lubricated. The tail of the movable boom 62 is provided with a slider lubrication structure, and a slider 1 is installed outside the movable boom 62 from the inside and lubricated. When the telescopic boom device includes a basic boom 61 and multiple moving booms 62, among two adjacent moving booms 62, the front part of the outer moving boom 62 is provided with a slider lubrication structure, and the slider 1 is installed inside the moving boom 62 from the outside of the moving boom 62 and oiled. The tail part of the inner moving boom 62 is provided with a slider lubrication structure, and the slider 1 is installed outside the moving boom 62 from the inside of the moving boom 62 and oiled.
[0050] Among them, the construction machinery can be telescopic boom forklifts.
[0051] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention. This includes combining various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.
Claims
1. A slider lubrication structure for a telescopic boom device, characterized in that, include: A slider (1) is configured to be positioned within the interval between two adjacent arm segments (6), the slider (1) being connected to one of the arm segments (6) and slidingly engaged with the other arm segment (6); and Connector (2), which is used to pass through one of the arm sections (6) and insert into the slider (1) to achieve connection, the connector (2) is provided with an oil injection channel (21), the oil injection channel (21) is connected to the sliding mating surface (11) of the slider (1) on the outside.
2. The slider lubrication structure for a telescopic arm device according to claim 1, characterized in that, The slider (1) has a connecting hole (12) that extends through it along its axial direction, and the end of the connector (2) inserted into the connecting hole (12) has an axial distance between it and the sliding mating surface (11) of the other arm section (6).
3. The slider lubrication structure for a telescopic arm device according to claim 2, characterized in that, The connector (2) is threadedly connected to the slider (1).
4. The slider lubrication structure for a telescopic arm device according to claim 3, characterized in that, The connecting hole (12) is fitted with a first nut (3), and the connector (2) is threadedly connected to the first nut (3).
5. The slider lubrication structure for a telescopic arm device according to claim 3, characterized in that, The connector (2) is provided with an external thread, and the inner wall of the connecting hole (12) is provided with an internal thread that mates with the external thread.
6. The slider lubrication structure for a telescopic arm device according to claim 4 or 5, characterized in that, The connector (2) includes: A stud (22), one end of which passes through one of the arm sections (6) and is inserted into the connecting hole (12), and the stud (22) is provided with an oil injection channel (21) extending through it axially; and The second nut (23) is threaded to the other end of the stud (22) to lock the stud (22) to one of the arm sections (6).
7. The slider lubrication structure for a telescopic arm device according to claim 1, characterized in that, The sliding mating surface (11) is provided with an oil groove.
8. The slider lubrication structure for a telescopic arm device according to claim 1, characterized in that, The slider lubrication structure further includes an oil injection component (5) for injecting oil into the oil injection channel (21); and / or The slider lubrication structure also includes a seal for sealing the oil inlet of the oil injection channel (21).
9. A telescopic boom device, characterized in that, The telescopic boom device includes a plurality of boom sections (6) connected in sequence, and a slider lubrication structure for the telescopic boom device as described in any one of claims 1-8 is provided between adjacent boom sections (6).
10. An engineering machinery, characterized in that, Includes the telescopic arm device as described in claim 9.