Tool-less bearing quick installation kit
By using a hydraulically driven punch that closely engages with the bearing rod, the problem of cumbersome bearing assembly and safety hazards in existing bearing systems is solved, enabling efficient and low-cost bearing assembly and consistency testing, and adapting to the assembly of bearings of different specifications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUANGHUACHENG KUNZEMING PRECISION MOLD CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-06-23
Smart Images

Figure CN224391020U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of bearing installation equipment, specifically to a tool-free bearing quick installation kit. Background Technology
[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during their movement, and ensure their rotational accuracy. In the bearing manufacturing process, appropriate equipment is needed to install the bearing rod inside the bearing.
[0003] Existing bearings and bearing rods are assembled using thermal expansion and contraction. The bearing rod is first cooled in liquid nitrogen to reduce its diameter before being assembled with the bearing. As the temperature rises, the bearing rod returns to its original diameter, achieving a tight fit. However, this method is not only cumbersome and requires complex tools, affecting efficiency, but also poses a safety risk due to the low temperature when handling the bearing rod in liquid nitrogen, increasing the risk of hand injury. Therefore, a tool-free bearing quick-installation kit is urgently needed to solve these problems. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this application provides a tool-free bearing quick-installation kit, which solves the problems mentioned in the background section.
[0006] (II) Technical Solution
[0007] This utility model is achieved through the following technical solution: This utility model proposes a tool-free bearing quick installation kit, including a base, two sets of upright plates symmetrically installed on the upper end of the base, a support seat fixed at the top of the upright plates, and a pressure application component installed at the top of the support seat. The pressure application component includes a hydraulic cylinder disposed on the upper end of the support seat, a piston rod extending from one end of the hydraulic cylinder, an installation screw fixed at the middle of one end of the piston rod, a connecting sleeve sleeved on the outer side of the installation screw, a punch with a frustum-shaped structure fixed at the bottom end of the connecting sleeve, and a connecting rod switch disposed on one side wall of the hydraulic cylinder. The connecting rod switch is disposed on the bearing plate and connected to the hydraulic cylinder.
[0008] By adopting the above technical solution, during use, the hydraulic cylinder can be controlled by the linkage switch in the pressure application assembly to move the punch downward, so as to apply pressure to the bearing rod. Since the bearing rod has a hollow structure in the middle, the outer wall of the bearing rod will be subjected to outward extrusion force, causing the edge to extend outward and finally press down on the C corner of the bearing to achieve a tight fit. This method can replace the traditional assembly mode and has the advantages of lower cost, higher production efficiency, shorter processing cycle, and better product inspection consistency.
[0009] Furthermore, the upright plate is fixed to the base by bolts, and the support base is fixed to the upright plate by bolts.
[0010] By adopting the above technical solution, the base, the upright plate, and the support seat can be assembled into a load-bearing frame.
[0011] Furthermore, the top of the support base has a through cavity for the piston rod to pass through, and the piston rod is slidably connected to the hydraulic cylinder.
[0012] By adopting the above technical solution, the cavity provides a moving channel for the piston rod, and the hydraulic cylinder can apply pressure to the bearing rod through the piston rod.
[0013] Furthermore, the connecting sleeve is connected to the mounting screw by a thread, and the punch is formed in the middle of the bottom end of the connecting sleeve.
[0014] By adopting the above technical solution, the connecting sleeve and the mounting screw can be combined to replace the punches of different specifications according to the specifications of the bearing rod, thereby enabling the assembly of bearing rods and bearings of different specifications.
[0015] Furthermore, a shock-absorbing assembly is installed at the bottom of the base. The shock-absorbing assembly includes damping rods distributed at the four corners of the bottom of the base. A buffer spring is fixed to the outside of the damping rod, and a shock-absorbing seat is fixed to the bottom of the damping rod.
[0016] By adopting the above technical solution, during the assembly process, the damping rod and the buffer spring can absorb the vibration generated by the device, thereby reducing vibration and ensuring the stability of the device during use.
[0017] Furthermore, a fixture is fixed at the top center of the base, and the fixture is located directly below the punch.
[0018] By adopting the above technical solution, the fixture can limit the bearing and bearing rod, thereby preventing displacement during the pressure assembly process and ensuring the assembly effect.
[0019] Furthermore, a bearing rod and a bearing are placed on the upper end of the fixture. The bearing rod and the bearing are coaxially arranged, and the bearing rod has a hollow structure.
[0020] By adopting the above technical solution, the bearing rod is tightly connected to the bearing under the action of the punch, thus realizing the assembly of the two.
[0021] (III) Beneficial Effects
[0022] Compared with the prior art, this utility model has the following advantages:
[0023] This invention employs an installation mechanism consisting of a hydraulic cylinder, mounting screw, connecting sleeve, punch, and linkage switch. During the assembly of the bearing rod and bearing, the hydraulic cylinder drives the punch downward, applying pressure to the bearing rod. Due to the hollow structure of the bearing rod, the outer wall of the bearing rod is subjected to outward compressive force, causing the edges to extend outward and ultimately press against the C-corner of the bearing, achieving a tight fit. This method can replace the traditional assembly mode using complex tools, offering advantages such as lower cost, higher production efficiency, shorter processing cycle, and better product inspection consistency. Furthermore, the combination of the connecting sleeve and mounting screw allows for the replacement of punches of different specifications according to the bearing rod's specifications, enabling the assembly of bearing rods and bearings of different specifications, resulting in superior performance. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of a tool-free bearing quick-installation kit described in this utility model;
[0025] Figure 2 This is a bottom view of the hydraulic cylinder in the tool-free bearing quick-installation kit described in this utility model;
[0026] Figure 3 This is an exploded view showing the connection relationship between the mounting screw and the connecting sleeve in a tool-free bearing quick-installation kit according to this utility model.
[0027] Figure 4 This is a schematic diagram of the shock-absorbing component in a tool-free bearing quick-installation kit described in this utility model.
[0028] The annotations in the attached figures are explained as follows:
[0029] 1. Base; 2. Vertical plate; 3. Support base; 4. Pressure application assembly; 401. Hydraulic cylinder; 402. Linkage switch; 403. Piston rod; 404. Mounting screw; 405. Connecting sleeve; 406. Punch; 407. Bearing plate; 5. Fixture; 6. Vibration damping assembly; 601. Buffer spring; 602. Damping rod; 603. Vibration damping seat. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0031] like Figures 1-3 As shown, a tool-free bearing quick-installation kit in this embodiment includes a base 1. Two sets of upright plates 2 are symmetrically installed on the upper end of the base 1. A support base 3 is fixed to the top of the upright plate 2. A pressure application component 4 is installed on the top of the support base 3. The pressure application component 4 includes a hydraulic cylinder 401 set on the upper end of the support base 3. A piston rod 403 extends from one end of the hydraulic cylinder 401. An installation screw 404 is fixed to the middle of one end of the piston rod 403. A connecting sleeve 405 is sleeved on the outside of the installation screw 404. A frustum-shaped punch 406 is fixed to the bottom end of the connecting sleeve 405. On one side wall of the hydraulic cylinder 401... A linkage switch 402 is provided, which is mounted on the support plate 407 and connected to the hydraulic cylinder 401. During use, the linkage switch 407 in the pressure application assembly 4 controls the hydraulic cylinder 401 to drive the punch 406 to move downward, so as to apply pressure to the bearing rod. Since the bearing rod has a hollow structure in the middle, the outer wall of the bearing rod will be subjected to outward extrusion force, causing the edge to extend outward and finally press down on the C corner of the bearing to achieve a tight fit. This method can replace the traditional assembly mode and has the advantages of lower cost, higher production efficiency, shorter processing cycle and better product inspection consistency.
[0032] like Figure 2 and Figure 3 As shown, in this embodiment, the upright plate 2 is fixed to the base 1 by bolts, and the support base 3 is fixed to the upright plate 2 by bolts. The top of the support base 3 has a through cavity for the piston rod 403 to pass through. The piston rod 403 is slidably connected to the hydraulic cylinder 401. The connecting sleeve 405 is connected to the mounting screw 404 by threads. The punch 406 is formed in the middle of the bottom end of the connecting sleeve 405. During use, the hydraulic cylinder 401 is controlled to work so that the piston rod 403 drives the punch 406 on the connecting sleeve 405 to move down, thereby applying pressure to the bearing rod, causing its end to deform and fit tightly against the C corner of the bearing, thus realizing the assembly of the two. The connecting sleeve 405 and the mounting screw 404 can be combined to replace the punch 406 of different specifications according to the specifications of the bearing rod, so that different specifications of bearing rods and bearings can be assembled.
[0033] like Figure 1 , Figure 2 and Figure 4As shown, in this embodiment, a shock-absorbing component 6 is installed at the bottom of the base 1. The shock-absorbing component 6 includes damping rods 602 distributed at the four corners of the bottom of the base 1. A buffer spring 601 is fixed to the outside of the damping rod 602. A shock-absorbing seat 603 is fixed to the bottom of the damping rod 602. A fixture 5 is fixed to the middle of the top of the base 1. The fixture 5 is located directly below the punch 406. A bearing rod and a bearing are placed on the upper end of the fixture 5. The bearing rod and the bearing are coaxially arranged. The bearing rod has a hollow structure. During use, the bearing and the bearing rod are placed coaxially on the fixture 5. The fixture 5 limits their movement, thereby preventing displacement during pressure assembly and ensuring the assembly effect. During assembly, the damping rod 602 and the buffer spring 601 can absorb the vibration generated by the device, thereby reducing vibration and ensuring the stability of the device during use.
[0034] The specific implementation process of this embodiment is as follows: The device is placed in position and connected to an external power source. Then, the bearing and bearing rod are coaxially placed on the jig 5. The jig 5 limits their movement, thus preventing displacement during the pressure assembly process and ensuring the assembly effect. Next, the linkage switch 402 is operated to control the hydraulic cylinder 401 to apply pressure to the bearing rod via the punch 406. The hydraulic cylinder 401 drives the punch 406 downwards, applying pressure to the bearing rod. Because the bearing rod has a hollow structure in the middle, the outer wall of the bearing rod will be subjected to outward compressive force, causing the edges to extend outwards and ultimately press down. At the C-corner of the bearing, a tight fit is achieved. This method can replace the traditional assembly mode and has the advantages of lower cost, higher production efficiency, shorter processing cycle, and better product inspection consistency. At the same time, the combination of connecting sleeve 405 and mounting screw 404 allows for the replacement of punches 406 of different specifications according to the bearing rod specifications, thus enabling the assembly of bearing rods and bearings of different specifications, resulting in high performance. During the assembly process, the damping rod 602 and buffer spring 601 combine to absorb the vibration generated by the device, thereby reducing vibration and ensuring the stability of the device during use.
[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A tool-free bearing quick-installation kit, characterized in that: The system includes a base (1), on which two sets of upright plates (2) are symmetrically mounted. A support seat (3) is fixed at the top of the upright plate (2). A pressure application component (4) is installed at the top of the support seat (3). The pressure application component (4) includes a hydraulic cylinder (401) located at the top of the support seat (3). A piston rod (403) extends from one end of the hydraulic cylinder (401). A mounting screw (404) is fixed in the middle of one end of the piston rod (403). A connecting sleeve (405) is sleeved on the outside of the mounting screw (404). A punch (406) with a frustum-shaped structure is fixed at the bottom of the connecting sleeve (405). A linkage switch (402) is provided on one side wall of the hydraulic cylinder (401). The linkage switch (402) is located on a bearing plate (407) and connected to the hydraulic cylinder (401).
2. The tool-free bearing quick-installation kit according to claim 1, characterized in that: The upright plate (2) is fixed to the base (1) by bolts, and the support base (3) is fixed to the upright plate (2) by bolts.
3. The tool-free bearing quick-installation kit according to claim 2, characterized in that: The top of the support base (3) has a through cavity for the piston rod (403) to pass through, and the piston rod (403) is slidably connected to the hydraulic cylinder (401).
4. The tool-free bearing quick-installation kit according to claim 3, characterized in that: The connecting sleeve (405) is connected to the mounting screw (404) by a thread, and the punch (406) is formed in the middle of the bottom end of the connecting sleeve (405).
5. The tool-free bearing quick-installation kit according to claim 4, characterized in that: The base (1) is equipped with a shock-absorbing component (6) at its bottom end. The shock-absorbing component (6) includes damping rods (602) distributed at the four corners of the bottom end of the base (1). A buffer spring (601) is fixed to the outside of the damping rod (602), and a shock-absorbing seat (603) is fixed to the bottom end of the damping rod (602).
6. The tool-free bearing quick-installation kit according to claim 1, characterized in that: A fixture (5) is fixed at the top center of the base (1), and the fixture (5) is located directly below the punch (406).
7. The tool-free bearing quick-installation kit according to claim 6, characterized in that: The upper end of the fixture (5) is provided with a bearing rod and a bearing. The bearing rod and the bearing are coaxially arranged and the bearing rod is a hollow structure.