Buffer replaceable roller cage
By introducing a buffer connection mechanism and a disassembly mechanism into the roller can ear, the problems of inflexible buffer connection and cumbersome disassembly and assembly are solved, enabling rapid replacement of the buffer and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUZHOU ZHONGTAI COAL MINE SAFETY EQUIP MFG CO LTD
- Filing Date
- 2025-09-22
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional roller can ear buffer connections are inflexible, have high maintenance costs, and are cumbersome to disassemble and assemble, affecting work efficiency.
The system employs a buffer connection mechanism and a disassembly mechanism. The buffer can be flexibly connected and disassembled by rotating the adjustment knob and the trapezoidal screw. The system uses a shaft pin and fastening bolt to replace the traditional welding fixation, enabling quick connection and disassembly.
It simplifies the disassembly and assembly process of the buffer, reduces maintenance difficulty and cost, and improves work efficiency.
Smart Images
Figure CN224577812U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of roller can ears, and in particular to a roller can ear with replaceable buffer. Background Technology
[0002] Roller lugs serve as key guiding components between the cage and the shaft wall in mine hoisting equipment, improving equipment safety and service life.
[0003] In existing technologies, when the buffer is connected to the support and the fixed frame, the connectors at both ends of the buffer are installed on the support and the fixed frame by pins, and the pins are fixed by welding to prevent the buffer from falling off. However, in actual use, the connection between the buffer and the support is not flexible enough. The common integral hinge welding means that if the buffer has a problem, the entire roller can ear may need to be disassembled and replaced, which is costly and inefficient. In terms of installation, tools are needed to cut and remove the welded fixing of the pins, and the whole process of disassembly and reinstallation is cumbersome, consumes a lot of time and manpower, and affects work efficiency.
[0004] Therefore, it is necessary to propose a replaceable roller can ear for the buffer to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a replaceable roller can ear for shock absorbers, so as to solve the problems of inflexible shock absorber connection, high maintenance cost and complicated disassembly and assembly in traditional roller can ears.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a replaceable roller can ear for a buffer, including a connecting seat, wherein a buffer connecting mechanism is provided on the upper surface of the connecting seat; The buffer connection mechanism includes a connector, which is hinged to the upper surface of the connector seat. A rotary adjustment knob is rotatably connected to the upper surface of the connector. A trapezoidal screw is fixedly connected to the upper surface of the rotary adjustment knob. A mounting post is fixedly connected to the outside of the connector. A connecting sleeve is threaded onto the outside of the trapezoidal screw. The connecting sleeve is slidably connected to the outside of the mounting post. A protective sleeve is fitted around the outer ring of the connecting sleeve. The mounting post extends out of the protective sleeve and is fixedly connected to the outside of the connector. A buffer is fixedly connected to the upper surface of the connecting sleeve.
[0007] Preferably, a fixing frame is hinged to the upper surface of the connecting seat.
[0008] Preferably, a roller assembly is fixedly connected to the inner wall of the fixing frame.
[0009] Preferably, the buffer connection mechanism is provided with a disassembly mechanism on the outside. The disassembly mechanism includes a fixing sleeve, which is fixedly connected to the side wall of the fixing frame. A shaft pin is inserted into the fixing sleeve, and the end of the shaft pin extends out of the fixing sleeve. A fastening bolt is threaded into the shaft pin, and the fastening bolt is threaded into the protruding part of the shaft pin.
[0010] Preferably, the end of the buffer away from the connecting sleeve is rotatably connected to the outside of the shaft pin.
[0011] The technical effects and advantages of this utility model are as follows: In this utility model, a buffer connection mechanism is provided. The rotating adjustment knob cooperates with the trapezoidal screw to separate the inner wall thread of the connecting sleeve from the trapezoidal screw. Then, the old buffer is taken out upward, thereby simplifying disassembly and assembly and improving disassembly efficiency. After installation, the rotating adjustment knob cooperates with the trapezoidal screw to drive the connecting sleeve containing the buffer to slide along the mounting post, so as to synchronously adjust the buffer preload. Furthermore, the disassembly mechanism replaces the traditional welding and fixing method. Through the cooperation of the shaft pin and the fastening bolt, the buffer and the fixing frame can be quickly connected and disassembled without the need for cutting tools, thus reducing maintenance difficulty and cost. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the external structure of the replaceable roller can ear of the buffer of this utility model.
[0013] Figure 2 This is a front cross-sectional view of the replaceable roller lug of the buffer of this utility model.
[0014] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.
[0015] Figure 4 This is a schematic diagram of the unfolded structure of the buffer connection mechanism of this utility model.
[0016] Figure 5 This is a rear view schematic diagram of the disassembly mechanism of this utility model.
[0017] In the diagram: 1. Connecting seat; 2. Fixing frame; 3. Roller assembly; 4. Buffer connecting mechanism; 5. Disassembly mechanism; 41. Connecting head; 42. Rotary adjustment knob; 43. Trapezoidal screw; 44. Mounting post; 45. Connecting sleeve; 46. Buffer; 47. Protective sleeve; 51. Fixing sleeve; 52. Shaft pin; 53. Fastening bolt. Detailed Implementation
[0018] This utility model provides, for example Figures 1-5The present invention relates to a replaceable roller can ear for a buffer, which addresses the problems of inflexible buffer connection, high maintenance costs, and cumbersome disassembly and assembly in traditional roller can ears.
[0019] This roller can ear consists of a connecting seat 1, a fixing frame 2, a roller assembly 3, a buffer connecting mechanism 4, and a disassembly mechanism 5.
[0020] The connecting seat 1 has a rectangular block structure and is used to connect the connecting head 41 of the fixed frame 2 and the buffer connecting mechanism 4. As the basic support component of the entire device, it is fixedly connected to external equipment such as the hoist cage by bottom bolts, providing a stable installation benchmark for the fixed frame 2 and the buffer connecting mechanism 4, while bearing the impact load and radial force during operation to ensure the overall stability of the device.
[0021] The right side wall of the fixed frame 2 is welded with a fixed sleeve 51 that matches the disassembly mechanism 5. It supports the roller assembly 3 and transmits the load. Through the hinge structure with the connecting seat 1, it adaptively adjusts the angle according to the contact state between the roller assembly 3 and the track, avoiding rigid impact caused by track deviation and protecting the roller assembly 3 and the buffer 46.
[0022] The roller assembly 3 includes the roller body, axle, deep groove ball bearing and rubber sealing cover, which converts the sliding friction of the cage into rolling friction during operation, reducing running resistance.
[0023] The buffer connection mechanism 4, as the core component for enabling flexible adjustment and connection of the buffer 46 including the connecting sleeve 45, includes a connector 41, a rotary adjustment knob 42, a trapezoidal screw 43, a mounting post 44, a connecting sleeve 45, a buffer 46, and a protective sleeve 47. The buffer 46 and the connecting sleeve 45 are an integral structure. The connector 41 is hinged in another hinge groove on the top of the connecting seat 1. The rotary adjustment knob 42 is disc-shaped with anti-slip textures on its outer wall. Its lower end is rotatably connected to the circular groove of the connector 41 via a thrust bearing. The center of its upper end face is welded and fixed to the trapezoidal screw 43, which has a self-locking function to prevent loosening under force. Its lower end is welded to the rotary adjustment knob 42, and its upper end... The mounting post 44 extends into the connecting sleeve 45 and is connected by a threaded fit. The lower end of the mounting post 44 is fixed to the outer wall of the connector 41 by welding. The outer wall slides with the inner hole of the connecting sleeve 45 and plays a guiding role. The inner wall of the connecting sleeve 45 is machined with an internal thread that matches the trapezoidal screw 43. The outer wall fits with the inner hole of the protective sleeve 47. The upper end face is fixed to the bottom of the cylinder of the buffer 46 by welding to form an integral structure. It can slide along the axial direction of the mounting post 44. The buffer 46 is a hydraulic buffer. The bottom of the cylinder is welded to the connecting sleeve 45. The top of the piston rod is rotatably connected to the outside of the shaft pin 52 of the disassembly mechanism 5 through a bearing. The protective sleeve 47 is a telescopic nitrile rubber corrugated tube sleeved on the outside of the connecting sleeve 45.
[0024] Furthermore, the buffer connection mechanism 4 achieves multi-angle adaptation of the buffer 46 through the hinge of the connector 41, avoiding stress concentration; the rotary adjustment knob 42 cooperates with the trapezoidal screw 43 to drive the connecting sleeve 45 containing the buffer 46 to slide along the mounting post 44, adjusting the buffer preload; the protective sleeve 47 protects the threaded structure of the trapezoidal screw 43 and the connecting sleeve 45 to prevent dust and moisture corrosion; and the buffer and connecting sleeve are designed as an integral unit, which can be disassembled and installed simultaneously when replacing, simplifying the operation.
[0025] The disassembly mechanism 5 includes a fixed sleeve 51, a shaft pin 52, and a fastening bolt 53, which are used to quickly assemble and disassemble the buffer 46 and the fixed frame 2. The fixed sleeve 51 is fixed to the right side wall of the fixed frame 2 by welding, and its axis is aligned with the axis of the piston rod of the buffer 46. One end of the shaft pin 52 is a smooth cylindrical surface that is inserted into the fixed sleeve 51, and the threaded end extends out of the fixed sleeve 51. The middle part is engaged with the bearing hole of the piston rod of the buffer 46. The fastening bolt 53 is engaged with the external thread at the end of the shaft pin 52. After tightening, the shaft pin 52 is axially locked in the fixed sleeve 51. Thus, the disassembly mechanism 5 replaces the traditional welding fixing method. Through the cooperation of the shaft pin 52 and the fastening bolt 53, the buffer 46 and the fixed frame 2 can be quickly connected and disassembled without cutting tools, reducing the difficulty of maintenance.
[0026] Furthermore, during the replacement of the buffer 46, if the buffer 46 experiences oil leakage or damping failure such as inability to rebound after compression, it is not necessary to disassemble the entire roller can ear. Use an open-end wrench to unscrew the fastening bolt 53 of the disassembly mechanism 5 and place it in the tool box; hold the buffer 46 cylinder with one hand and pull out the shaft pin 52 axially along the fixed sleeve 51 with the other hand; rotate the adjusting knob 42 to engage with the trapezoidal screw 43, so that the inner thread of the connecting sleeve 45 is separated from the trapezoidal screw 43, and then remove the old buffer 46 upwards. Then, install the new buffer 46 and connecting sleeve 45 assembly: put the new buffer 46 and connecting sleeve 45 assembly on the outside of the mounting post 44, rotate the adjusting knob 42 to engage the connecting sleeve 45 with the trapezoidal screw 43 thread, then align the bearing hole at the top of the piston rod of the buffer 46 with the inner hole of the fixed sleeve 51, insert the shaft pin 52, ensuring that the threaded end of the shaft pin 52 extends out of the fixed sleeve 51, and screw the fastening bolt 53 into the threaded end of the shaft pin 52 to complete the replacement and installation of the buffer 46.
Claims
1. A replaceable roller lug for a buffer, comprising a connecting base (1), characterized in that: The upper surface of the connecting seat (1) is provided with a buffer connecting mechanism (4). The buffer connection mechanism (4) includes a connector (41), which is hinged to the upper surface of the connector (1). A rotary adjustment knob (42) is rotatably connected to the upper surface of the connector (41). A trapezoidal screw (43) is fixedly connected to the upper surface of the rotary adjustment knob (42). A mounting post (44) is fixedly connected to the outside of the connector (41). A connecting sleeve (45) is threaded to the outside of the trapezoidal screw (43). The connecting sleeve (45) is slidably connected to the outside of the mounting post (44). A protective sleeve (47) is provided on the outer ring of the connecting sleeve (45). Part of the mounting post (44) extends out of the protective sleeve (47), and the protruding part of the mounting post (44) is fixedly connected to the outside of the connector (41). A buffer (46) is fixedly connected to the upper surface of the connecting sleeve (45).
2. The replaceable roller can ear for a buffer according to claim 1, characterized in that: The upper surface of the connecting seat (1) is hinged with a fixing frame (2).
3. The replaceable roller can ear of the buffer according to claim 2, characterized in that: The inner wall of the fixed frame (2) is fixedly connected to a roller assembly (3).
4. The replaceable roller can ear for a buffer according to claim 3, characterized in that: The buffer connection mechanism (4) is provided with a disassembly mechanism (5) on the outside. The disassembly mechanism (5) includes a fixing sleeve (51). The fixing sleeve (51) is fixedly connected to the side wall of the fixing frame (2). A shaft pin (52) is inserted inside the fixing sleeve (51). The end part of the shaft pin (52) extends out of the fixing sleeve (51). A fastening bolt (53) is threaded inside the shaft pin (52), and the fastening bolt (53) is threaded to the protruding part of the shaft pin (52).
5. A replaceable roller can ear for a buffer according to claim 4, characterized in that: The end of the buffer (46) away from the connecting sleeve (45) is rotatably connected to the outside of the pin (52).