A clamp for dismounting and mounting a bearing

Abstract

The application provides a clamp for dismounting and mounting a bearing, comprising a bottom plate, two sets of support units arranged correspondingly at both ends of the bottom plate, and an auxiliary support installed on the bottom plate between the two support units; the support unit comprises a support, an installation slot is arranged at the top of the support, a connecting end is arranged at one side of the upper part of the support, and a locking end is arranged at the other side, an end cover is hinged to the connecting end, a live bolt is hinged to the locking end, a locking mechanism is installed on the live bolt, the locking mechanism comprises a sleeve fitted on the screw end of the live bolt, a nut is screwed on the screw end of the live bolt, and a resilient piece is arranged between the nut and the bottom plate of the sleeve to keep the sleeve in a locked state. The application can realize quick and efficient dismounting and clamping of a camshaft, and can quickly and accurately determine the direction and position of the bearing through the auxiliary support, and can prevent the bearing from rotating freely during dismounting or assembling, thereby improving the production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of bearing installation and disassembly technology, and in particular relates to a clamp for disassembling and installing bearings. Background Technology

[0002] For camshaft applications requiring the installation and removal of multiple bearings, see attached... Figure 1 As shown, five bearings need to be removed from the camshaft or installed onto the camshaft journals individually. Traditionally, the camshaft with rolling bearings at both ends is placed on a workbench, and both removal and installation are done manually. Especially during installation, the bearings' orientation and position must be manually aligned before each of the five bearings is installed onto the camshaft journal. This process requires one person to hold the camshaft while another loosens or tightens the bearing screws, involving multiple adjustments, which is complex, labor-intensive, costly, and wastes human resources. Furthermore, relying on manual judgment of bearing orientation and position during installation is prone to errors, resulting in low efficiency, poor quality, and unsuitability for mass production. Therefore, it is necessary to design a dedicated fixture to assist in bearing removal and installation. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the deficiencies in the prior art and proposes a clamp for disassembling and installing bearings.

[0004] To achieve the above objectives, the technical solution created by this invention is implemented as follows:

[0005] A clamp for disassembling and installing bearings includes a base plate with two sets of support units arranged at both ends of the base plate, and an auxiliary support installed on the base plate between the two support units. Each support unit includes a bracket with a mounting groove at its top. A connecting end is located on one side of the mounting groove, and a locking end is located on the other side of the upper part of the bracket. An end cap is hinged to the connecting end, and a movable rib bolt is hinged to the locking end. A locking mechanism is installed on the movable rib bolt. A lower bearing shell is located in the mounting groove, and an upper bearing shell is located inside the end cap. The locking mechanism includes a sleeve fitted onto the screw end of the movable rib bolt. A nut is screwed onto the screw end of the movable rib bolt, and a spring-loaded element is provided between the nut and the base plate of the sleeve to maintain the sleeve in a locked state. A groove is provided on the end cap to mate with the sleeve. After the end cap is fastened to the top of the bracket, the locking mechanism locks the groove, thereby locking the end cap and creating a clamping space between the upper and lower bearing shells. An adjustment gap exists between the lower end face of the end cap and the upper end face of the bracket.

[0006] Furthermore, the end cap has an arc-shaped structure, and the upper bearing is installed in the arc-shaped groove on its lower side.

[0007] Furthermore, the upper bearing shell is fixed to the end cap by screws.

[0008] Furthermore, the lower bearing is fixed to the bracket by screws.

[0009] Furthermore, a connecting seat is provided at the lower end of the bracket, and the connecting seat is fixed to the base plate by screws.

[0010] Furthermore, the auxiliary support includes a pillar, and an auxiliary positioning pin is provided on the upper part of the pillar.

[0011] Furthermore, the spring-loaded component includes a spring fitted onto the movable bolt, with its upper end abutting against the nut and its lower end abutting against the sleeve base plate.

[0012] Furthermore, a washer is provided between the nut and the spring.

[0013] Furthermore, a screw plug can be detachably installed at the open end of the sleeve.

[0014] Compared with existing technologies, the present invention has the following advantages:

[0015] This invention features a simple structure. After the end cover is fastened to the closed state, the sleeve can press the end cover tightly under the elastic force of the spring, realizing quick and efficient disassembly and clamping of the camshaft. The auxiliary positioning pin on the support column can quickly and accurately determine the bearing's directional position, while preventing the bearing from rotating freely during disassembly or assembly, thus improving production efficiency. Attached Figure Description

[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A schematic diagram of the structure created by this invention;

[0018] Figure 2 Top view created for this invention;

[0019] Figure 3 Side view created for this invention;

[0020] Figure 4 for Figure 3 Enlarged view of the structure at point I in the middle. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] A clamp for removing and installing bearings, such as Figures 1 to 4 As shown, the system includes a base plate 15, with two sets of support units arranged at both ends of the base plate, and an auxiliary support 17 installed on the base plate between the two support units. Each support unit includes a bracket 13 with a mounting groove at the top. A connecting end is located on one side of the upper part of the bracket within the mounting groove, and a locking end is located on the other side. An end cap 2 is hinged to the connecting end, and a movable rib bolt 10 is hinged to the locking end. A locking mechanism is installed on the movable rib bolt. A lower bearing shell 3 is located in the mounting groove, and an upper bearing shell 16 is located inside the end cap. By having the upper and lower bearing shells contact the camshaft journal, damage to the camshaft journal surface can be prevented during clamping. For example, the movable rib bolt is connected to the bracket with a pin, allowing the movable rib bolt to quickly rotate within the groove. Similarly, the bracket and end cap are connected using a pin 1, allowing the end cap to rotate under pin connection.

[0026] The locking mechanism includes a sleeve 5 fitted onto the end of the live rib bolt, a nut 6 screwed onto the end of the live rib bolt, and a spring-loaded element 9 between the nut and the bottom plate of the sleeve to keep the sleeve locked. The end cap has a groove that mates with the sleeve. After the end cap is fastened to the top of the bracket, the locking mechanism holds the groove, thereby locking the end cap, so that a clamping space is formed between the upper and lower bearings, and there is an adjustment gap 17 between the lower end face of the end cap and the upper end face of the bracket.

[0027] Specifically, the end cap has an arc-shaped structure, and the upper bearing shell is installed in the arc-shaped groove on its lower side. The upper bearing shell is fixed to the end cap by screws 4. Preferably, the mounting groove is offset at the top of the bracket. After the end cap is fastened to the bracket, the arc-shaped groove of the end cap corresponds to the mounting groove, which can effectively lock and fix the camshaft journal and reliably maintain the stability of the camshaft. The lower bearing shell is fixed to the bracket by screws. The lower end of the bracket is provided with a connecting seat, which is fixed to the base plate by connecting seat fixing screws 14. A screw plug 7 is detachably installed at the open end of the sleeve to ensure that the upper end of the rib bolt does not protrude from the sleeve.

[0028] The aforementioned spring-loaded component includes a spring fitted onto a movable bolt, with its upper end abutting against a nut and its lower end abutting against a sleeve base plate. Typically, a washer 8 is provided between the nut and the spring. When the camshaft journal is installed into the clamping space between the upper and lower bearings, the spring is compressed by lifting the sleeve, causing the sleeve to move upwards. After the end cap is fastened to the upper end of the bracket, the lower end of the sleeve aligns with the groove of the end cap. Then, the sleeve is released, and under the spring force, the lower end of the sleeve presses against the upper end of the groove of the end cap, thus clamping the camshaft. Similarly, lifting the sleeve can flip the end cap to the open state for quick camshaft disassembly.

[0029] The aforementioned auxiliary support includes a support column 11, with an auxiliary positioning pin 12 on the upper part of the support column. The auxiliary positioning pin engages with the pin hole on the bearing to prevent incorrect positioning of the bearing direction and position. The auxiliary positioning pin can be arranged horizontally, with a stepped shoulder structure designed on the positioning pin to match different pin hole diameters, and the exposed part (on the bearing) serves as a guide. In an optional embodiment, the lower end of the support column is slidably mounted on the base plate, and the slide rail on the base plate for mounting the support column is arranged along the line connecting the two support units. By inserting the auxiliary positioning pin into the pin hole on the bearing end face, the bearing direction and position can be quickly and efficiently determined, while preventing the bearing from rotating freely during disassembly or assembly, thus improving working stability and efficiency. To improve the reliability of the bearing installation and disassembly process, a protective mechanism can be installed between the base plate and the support column. Specifically, the protective mechanism includes a retractor mounted on the base plate, with a flexible traction belt between the retractor and the base plate. This traction belt can be pulled out when the speed is below a set speed, and is locked by the retractor when the pulling speed is above the set speed.

[0030] As an example, the retractor includes a ratchet mechanism installed in the base plate slide. A flexible pull belt is provided between the ratchet mechanism and the base plate. The pull belt is controlled by the retractor, allowing the pull belt to be pulled out at a speed lower than the set speed. When the pull belt pull speed is greater than the set speed, the ratchet mechanism locks the pull belt, which acts like a "seat belt". When a sudden loss of control occurs during the installation or removal of the bearing, such as when the bearing has a momentary tendency to fall off, or when an external force impacts or bumps the support column, the protective mechanism can instantly lock the support column, preventing it from moving and preventing uncontrolled movement of the support column, which would affect the assembly or disassembly. This not only prevents damage to structural components but also prevents accidents.

[0031] This invention features a simple structure. After the end cover is fastened to the closed state, the sleeve can press the end cover tightly under the elastic force of the spring, realizing quick and efficient disassembly and clamping of the camshaft. The auxiliary positioning pin on the support column can quickly and accurately determine the bearing's directional position, while preventing the bearing from rotating freely during disassembly or assembly, thus improving production efficiency.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fixture for dismounting and mounting a bearing, characterized in that: The system includes a base plate with two sets of support units arranged at both ends, and an auxiliary support installed between the two support units on the base plate. Each support unit includes a bracket with a mounting groove at its top. A connecting end is located on one side of the upper part of the bracket, and a locking end is located on the other side. An end cap is hinged to the connecting end, and a movable rib bolt is hinged to the locking end. A locking mechanism is installed on the movable rib bolt. A lower bearing shell is located in the mounting groove, and an upper bearing shell is located inside the end cap. The locking mechanism includes a sleeve fitted onto the screw end of the movable rib bolt. A nut is screwed onto the screw end of the movable rib bolt, and a spring-loaded element is located between the nut and the base plate of the sleeve to maintain the sleeve in a locked state. The end cap has a groove that mates with the sleeve, and the end cap is fastened to... After the top of the bracket is reached, a locking mechanism engages the groove shape, thereby locking the end cap and creating a clamping space between the upper and lower bearing bushes. An adjustment gap exists between the lower end face of the end cap and the upper end face of the bracket. The lower end of the support column is slidably mounted on the base plate, and the slide rails on the base plate for mounting the support column are arranged along the line connecting the two support units. An auxiliary positioning pin is inserted into the pin hole on the bearing end face to determine the bearing direction and prevent the bearing from rotating freely during disassembly or assembly. A protective mechanism is installed between the base plate and the support column. This protective mechanism includes a retractor mounted on the base plate. A flexible traction belt is provided between the retractor and the base plate. This traction belt can be pulled out at speeds below a set value and is locked by the retractor when the pulling speed exceeds the set value.

2. A bearing puller and installer as claimed in claim 1, wherein: The end cap has an arc-shaped structure, and the upper bearing is installed in the arc-shaped groove on its lower side.

3. A bearing puller and installer as claimed in claim 2, wherein: The upper bearing shell is fixed to the end cap by screws.

4. A fixture for disassembling and installing bearings according to claim 1, characterized in that: The lower bearing shell is fixed to the bracket by screws.

5. A bearing puller and installer as claimed in claim 1, wherein: The lower end of the bracket is provided with a connecting seat, which is fixed to the base plate by screws.

6. A bearing puller and installer as claimed in claim 1, wherein: The spring-loaded component includes a spring fitted onto the movable bolt, with its upper end abutting against the nut and its lower end abutting against the bottom plate of the sleeve.

7. A bearing dismounting and mounting clamp according to claim 6, characterized in that: A washer is provided between the nut and the spring.

8. A bearing puller and installer as claimed in claim 1, wherein: A screw plug can be detachably installed at the open end of the sleeve.

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