A quick-mounting front lower slider assembly

Abstract

A quick-assembly front lower sliding block assembly belongs to the technical field of cranes. It comprises a sliding block body, a metal pressing frame and a positioning seat. The outer side surface of the sliding block body is provided with a limiting structure one, and the upper surface of the sliding block body is provided with an oil storage groove. The metal pressing frame is a rectangular frame structure, and the inner side surface thereof is provided with a limiting structure two. The limiting structure two cooperates with the limiting structure one to limit the movement of the sliding block body relative to the metal pressing frame. One end of the metal pressing frame is provided with a plug-in structure, and the other end is provided with a fastening connecting part. The positioning seat is fixedly connected to the inner surface of a hoist arm body, and the end part of the positioning seat is provided with a positioning cavity. The metal pressing frame is positioned and connected on one side by cooperating with the positioning cavity through the plug-in structure, and is fixed to the hoist arm body by a fastener passing through the fastener connecting part, so that the sliding block body is tightly fixed to the hoist arm body. The quick positioning of the front lower sliding block during assembly is realized, errors are not easy to occur, the pressing is uniform, and the assembly efficiency is high.

Description

Technical Field

[0001] This utility model relates to a quick-installation front lower slider assembly, belonging to the field of crane technology. Background Technology

[0002] The slider is an important support and friction component for the relative movement between the boom cylinders of a truck-mounted crane. Among them, the front lower slider is limited by the small assembly space, the large number of them, and the complex assembly process. It is very easy to make mistakes during on-site assembly. Each slider needs to be individually aligned, positioned, and tightened. The assembly action is repeated many times, which prolongs the cycle time of the entire boom assembly line and occupies a long time for boom assembly, affecting assembly efficiency. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the prior art by providing a quick-installation front lower slider assembly, which enables rapid positioning of the front lower slider during assembly, reduces the likelihood of errors, ensures uniform clamping, and improves assembly efficiency.

[0004] The technical solution of this utility model is as follows: A quick-installation front lower slider assembly, characterized in that it comprises: a slider body, a metal pressure frame, and a positioning seat; the outer side of the slider body is provided with a first limiting structure, and the upper surface of the slider body is provided with an oil reservoir; the metal pressure frame is a rectangular frame structure, and its inner side is provided with a second limiting structure, which cooperates with the first limiting structure to restrict the movement of the slider body relative to the metal pressure frame; one end of the metal pressure frame is provided with a plug-in structure, and the other end is provided with a fastening connection part; the positioning seat is fixedly connected to the inner surface of the boom body, and the end of the positioning seat is provided with a positioning cavity; the metal pressure frame achieves positioning and connection on one side through the plug-in structure cooperating with the positioning cavity, and is fixed to the boom body by fasteners passing through the fastener connection part, thereby pressing and fixing the slider body to the boom body.

[0005] In the above scheme, the components are divided into three main parts: slider body, metal pressure frame and positioning seat. The slider body is based on the metal pressure frame, and its length and width are changed according to the size of the crane boom. The oil storage groove on the slider body is a closed groove. Lubricating grease is applied before installation to store oil.

[0006] During installation, the positioning seat is first welded to the inner surface of the arm body, and then assembly can be completed by simple plugging and fastening, which greatly improves the efficiency of installation and replacement. Even if the arm body assembly space is small, it can be assembled quickly.

[0007] The combination of the "plug-in structure" and the "positioning cavity" not only provides mechanical error prevention, but also achieves precise pre-positioning on one side to prevent component displacement during the pressing process. The other side is finally locked by fasteners. The metal pressure frame can reliably press the slider body onto the boom body through limit structure one and limit structure two, ensuring the accuracy of installation and the rigidity of the connection.

[0008] Preferably, the first limiting structure is an outwardly convex inclined surface or arc surface, and the second limiting structure is a correspondingly concave inclined surface or arc surface. During the pressing process between the metal pressure frame and the slider body, the inclined surface engagement allows the slider body to automatically center and tightly engage with the metal pressure frame. Furthermore, the inclined or arc surface structure increases the contact area and improves stability.

[0009] Preferably, the insertion structure is a wedge-shaped block, and the positioning cavity is a wedge-shaped cavity that mates with it. The wedge-shaped fit has guiding and self-locking characteristics. During installation, simply inserting the wedge-shaped block of the metal pressure frame into the wedge-shaped cavity of the positioning seat achieves precise axial and lateral positioning before tightening, providing convenience and a reference for subsequent tightening operations.

[0010] Preferably, the upper surface of the slider body is provided with multiple parallel strip grooves to form the oil storage groove, which helps to evenly distribute the lubricating grease to the entire sliding contact surface.

[0011] Preferably, the upper surface of the slider body is provided with multiple circular grooves to form the oil storage groove. The circular grooves are arranged in multiple rows of diagonal lines, with adjacent rows being parallel to each other. The diagonal layout helps to cope with the complex working conditions of the boom, such as when the boom sways, the diagonal layout ensures that the oil storage points are covered in the front-back and left-right directions, ensuring continuous lubrication in all areas. In addition, compared with grid-shaped and strip-shaped grooves, the diagonal layout can also effectively distribute the force and reduce local stress.

[0012] Preferably, the positioning seat is provided with welding holes for welding and fixing. The welding holes are countersunk holes or through holes. During welding, the welding material fills the welding holes to form a full weld structure, thereby enhancing the connection strength between the positioning seat and the boom body.

[0013] This utility model has a simple and reasonable structure and is easy to manufacture. When installed on the lower front part of the boom, it can prevent the lower front slider from falling off and moving under uneven force, realize the rapid positioning and assembly of the lower front slider assembly, and improve the assembly efficiency of the boom. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the quick-installation front lower slider assembly of this utility model installed on the boom body (the oil storage tank is a strip groove). Figure 2This is a schematic diagram of the quick-release front lower slider assembly of this utility model (the oil reservoir is a strip groove); Figure 3 This is a schematic diagram of the metal pressure frame in this utility model; Figure 4 This is a schematic diagram of the slider body in this utility model (the oil storage tank is a strip-shaped groove); Figure 5 This is a schematic diagram of the positioning seat in this utility model; Figure 6 This is a schematic diagram of the assembly of the metal pressure frame and the slider body in this utility model (the oil storage tank is a strip groove). Figure 7 This is a schematic diagram of the slider body in this utility model (the oil storage tank is a circular groove). Figure 8 for Figure 7 A sectional view; In the figure: 1. Slider body; 2. Metal pressure frame; 3. Positioning seat; 4. Limiting structure one; 5. Oil reservoir; 6. Limiting structure two; 7. Insertion structure; 8. Fastening connection part; 9. Boom body; 10. Positioning cavity; 11. Fastener; 12. Welding hole. Detailed Implementation

[0015] A quick-release front lower slider assembly, such as Figure 1-5 As shown, it includes: slider body 1, metal pressure frame 2, and positioning seat 3.

[0016] like Figure 4 As shown, a limit structure 4 is provided on the outer side of the slider body, and an oil storage groove 5 is provided on the upper surface of the slider body.

[0017] like Figure 3 As shown, the metal pressure frame is a rectangular frame structure, and its inner surface is provided with a second limiting structure 6. The second limiting structure cooperates with the first limiting structure to restrict the movement of the slider body relative to the metal pressure frame. One end of the metal pressure frame is provided with a plug-in structure 7, and the other end is provided with a fastening connection part 8.

[0018] like Figure 5 As shown, the positioning seat is welded and fixed to the inner surface of the boom body 9 (in addition, the positioning seat can be further stabilized through the welding hole 12. During welding, the welding material fills the welding hole to form a full weld structure). The end of the positioning seat is provided with a positioning cavity 10. The metal pressure frame cooperates with the positioning cavity through the plug-in structure to achieve positioning and connection on one side, and is fixed to the boom body through the fastener 11 passing through the fastener connection part, thereby pressing and fixing the slider body to the boom body.

[0019] During installation, the positioning seat is first welded to the inner surface of the arm body, and then assembly can be completed by simple plugging and fastening.

[0020] In one embodiment of this utility model, the first limiting structure is an outwardly convex arc surface, and the second limiting structure is an inwardly concave arc surface that cooperates with it.

[0021] In one embodiment of this utility model, such as Figure 3 , Figure 4 , Figure 6 As shown, the first limiting structure is an outwardly convex inclined surface, and the second limiting structure is an inwardly concave inclined surface that matches it.

[0022] In one embodiment of this utility model, such as Figure 2 , Figure 5 As shown, the insertion structure is a wedge-shaped block, and the positioning cavity is a wedge-shaped cavity that mates with it.

[0023] In one embodiment of this utility model, such as Figure 4 As shown, the upper surface of the slider body is provided with multiple parallel strip grooves to form the oil storage tank.

[0024] In one embodiment of this utility model, such as Figure 7-8 As shown, the upper surface of the slider body is provided with multiple circular grooves to form the oil storage groove. The circular grooves are arranged in multiple rows of oblique lines, with adjacent rows being parallel to each other.

[0025] In one embodiment of this utility model, the fastening connection part consists of two mounting holes located on the side of the metal pressure frame, and the fasteners are screws and nuts.

Claims

1. A quick-release front lower slider assembly, characterized in that, include: Slider body, metal pressure frame, positioning seat; The outer side of the slider body is provided with a limit structure, and the upper surface of the slider body is provided with an oil storage groove. The metal pressure frame is a rectangular frame structure, and a second limiting structure is provided on its inner side. The second limiting structure cooperates with the first limiting structure to restrict the movement of the slider body relative to the metal pressure frame. One end of the metal pressure frame is provided with a plug-in structure, and the other end is provided with a fastening connection part; The positioning seat is fixedly connected to the inner surface of the boom body, and the end of the positioning seat is provided with a positioning cavity; The metal pressure frame is positioned and connected to the positioning cavity through a plug-in structure, and is fixed to the boom body by fasteners passing through the fastener connection part, thereby pressing and fixing the slider body to the boom body.

2. The quick-release front lower slider assembly according to claim 1, characterized in that, The first limiting structure is an outwardly convex inclined surface or arc surface, and the second limiting structure is an inwardly concave inclined surface or arc surface that cooperates with it.

3. The quick-release front lower slider assembly according to claim 1, characterized in that, The insertion structure is a wedge-shaped block, and the positioning cavity is a wedge-shaped cavity that mates with it.

4. The quick-release front lower slider assembly according to claim 1, characterized in that, The upper surface of the slider body is provided with multiple parallel strip grooves to form the oil storage tank.

5. A quick-release front lower slider assembly according to claim 1, characterized in that, The upper surface of the slider body is provided with multiple circular grooves to form the oil storage tank.

6. A quick-release front lower slider assembly according to claim 5, characterized in that, The circular grooves are arranged in multiple rows of diagonal lines, with adjacent rows being parallel to each other.

7. A quick-release front lower slider assembly according to claim 1, characterized in that, The positioning seat is provided with welding holes for welding and fixing.

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