Bearing sheath pressure test device

Abstract

The utility model provides a bearing sheath pressure test device which comprises a base, a U-shaped frame is installed on the upper surface of the base, a hydraulic cylinder is installed on the upper surface of the horizontal portion of the U-shaped frame, the hydraulic cylinder is vertically arranged, and the movable end of the hydraulic cylinder penetrates through the U-shaped frame and is provided with an anchor cable dynamometer. The lower side of the anchor cable dynamometer is provided with a protection piece used for protecting the anchor cable dynamometer, the upper surface of the base is sunken downwards to form a circular groove, a cushion disc used for supporting a bearing sheath is inserted into the circular groove, a plurality of inserting grooves are evenly formed in the outer surface of the cushion disc and arranged in the radial direction of the cushion disc, inserting blocks are inserted into the inserting grooves, and the inserting blocks are inserted into the inserting grooves. The upper surface of the base is sunken downwards to form a plurality of limiting grooves which are uniformly distributed and communicated with the circular groove, the supporting arm plate is inserted into the limiting grooves, and the base has the following beneficial effects that the part in direct contact with a bearing sheath is locally replaced, and the service life of the base is prolonged.

Description

Technical Field

[0001] The utility model relates to a pressure test device for a bearing sheath, belonging to the technical field of bearing processing. Background Technique

[0002] In the actual use process of bearings, in order to ensure the service life and use accuracy of the bearings, a bearing sheath adapted thereto is often provided on the outer periphery of the middle bearing. Therefore, the bearing sheath plays a role in protecting the bearing. In order to ensure the quality of the bearing sheath, a pressure test device is needed to detect the compressive strength of the bearing sheath. The pressure test device generally includes a hydraulic cylinder installed on a U-shaped frame. An anchor cable dynamometer is installed at the movable end of the hydraulic cylinder. The bearing sheath is placed between the base and the anchor cable dynamometer. After controlling the hydraulic cylinder to extend, the anchor cable dynamometer and the base act together to squeeze the bearing sheath. When the bearing sheath is damaged under pressure, observe the reading of the anchor cable dynamometer, so as to judge the maximum pressure value of the bearing sheath. When the bearing sheath is under pressure, the extrusion force it receives will act on the base. Since the bearing sheath is a ring-shaped structure, after the pressure test of bearing sheaths with different diameters, the surface of the base will deform under the action of the reaction force of the bearing sheath, making the surface of the base uneven and affecting the service life of the base. Therefore, it is necessary to design a pressure test device for a bearing sheath that prevents the base from being damaged. Content of the Utility Model

[0003] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a pressure test device for a bearing sheath, so as to solve the problems put forward in the above background technique. The utility model realizes local replacement of the parts directly contacting the bearing sheath and prolongs the service life of the base.

[0004] In order to achieve the above purpose, the utility model is realized through the following technical solutions: A pressure test device for a bearing sheath, including a base, a U-shaped frame is installed on the upper surface of the base, a hydraulic cylinder is installed on the upper surface of the horizontal part of the U-shaped frame, the hydraulic cylinder is arranged vertically, the movable end of the hydraulic cylinder penetrates through the U-shaped frame and is installed with an anchor cable dynamometer, a protective part for protecting the anchor cable dynamometer is arranged below the anchor cable dynamometer, a circular groove is formed by downward depression on the upper surface of the base, the circular groove is directly below the anchor cable dynamometer, a cushion plate for supporting the bearing sheath is inserted in the circular groove, a plurality of slots are uniformly arranged on the outer surface of the cushion plate, the slots are arranged along the radial direction of the cushion plate, plug blocks are inserted in the slots, the plug blocks are fixedly connected with the support arm plates, a plurality of uniformly arranged limiting grooves communicated with the circular groove are formed by downward depression on the upper surface of the base, and the support arm plates are inserted in the limiting grooves.

[0005] Furthermore, the protective part includes a disc body, a disc body is arranged below the anchor cable dynamometer, a vertically arranged guide rod is installed on the upper surface of the disc body, a guide hole matched with the guide rod is opened on the upper surface of the horizontal part of the U-shaped frame, and the guide rod penetrates through the guide hole.

[0006] Further, an external thread is machined on the outer surface of the lower end of the guide rod, a threaded hole is formed on the upper surface of the disc body, and the lower end of the guide rod is threadedly connected in the threaded hole.

[0007] Further, a connecting disc is fixedly connected to the movable end of the hydraulic cylinder, and the anchor cable dynamometer is installed on the lower surface of the connecting disc.

[0008] Further, a through hole is formed at the position where the U-shaped frame installs the hydraulic cylinder, and the movable end of the hydraulic cylinder penetrates through the through hole.

[0009] Further, connecting ears are fixedly connected to both parallel sides of the base, and fixing holes are formed on the upper surfaces of the connecting ears.

[0010] Further, two symmetrically arranged rib strips are installed on the upper surface of the horizontal part of the U-shaped frame, and the rib strips are arranged along the length direction of the horizontal part of the U-shaped frame.

[0011] Advantages of the utility model:

[0012] 1. Place the cushion plate in the circular groove on the base to achieve the assembly of the cushion plate and the base. When the bearing sheath is placed on the cushion plate, when the bearing sheath is pressed, its reaction force acts on the cushion plate. When the surface of the cushion plate is damaged, only the cushion plate needs to be replaced, without replacing the base, realizing local replacement of the part directly in contact with the bearing sheath, prolonging the service life of the base, and reducing the cost of replacing parts.

[0013] 2. Insert the insertion block on the support arm plate into the slot on the cushion plate to achieve the insertion connection between the support arm plate and the cushion plate. When the cushion plate is placed in the circular groove, insert the support arm plate into the corresponding limit groove, and then the pressure received by the cushion plate is dispersed to multiple parts of the base through the support arm plate.

[0014] 3. After placing the bearing sheath between the anchor cable dynamometer and the cushion plate, adjust the position of the disc body so that the disc body is located below the anchor cable dynamometer. Then, under the shielding of the disc body, prevent the anchor cable dynamometer from directly contacting the bearing sheath, playing a role in protecting the anchor cable dynamometer. Control the elongation of the hydraulic cylinder, and then the hydraulic cylinder drives the anchor cable dynamometer to move downward, so that the disc body and the cushion plate jointly act to squeeze the bearing sheath, and insert the guide rod on the disc body into the guide hole to realize the restriction of the movement track of the disc body. Description of the drawings

[0015] By reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings, other features, objects and advantages of the present utility model will become more obvious:

[0016] Figure 1 It is a schematic structural diagram of a bearing sheath pressure test device of the present utility model;

[0017] Figure 2 It is a three-dimensional view of the base in a pressure test device for a bearing sheath of the present utility model;

[0018] Figure 3 It is an assembly schematic diagram of a support arm plate and a cushion plate in a pressure test device for a bearing sheath of the present utility model;

[0019] In the figure: 1 - base, 2 - cushion plate, 3 - support arm plate, 4 - connecting ear, 5 - U-shaped frame, 6 - hydraulic cylinder, 7 - guide rod, 8 - rib plate strip, 9 - connecting disc, 10 - disc body, 11 - anchor cable dynamometer, 12 - limit groove, 13 - circular groove, 14 - slot, 15 - plug block. Specific embodiments

[0020] To make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please refer to Figure 1 , the present utility model provides a technical solution: a pressure test device for a bearing sheath, including a base 1. Connecting ears 4 are fixedly connected to both parallel sides of the base 1. A fixing hole is provided on the upper surface of the connecting ear 4. By installing the connecting ear 4 with a fixing hole on the base 1, it is convenient to limit the position of the base 1 using bolts. A U-shaped frame 5 is installed on the upper surface of the base 1. Two symmetrically arranged rib plate strips 8 are installed on the upper surface of the horizontal part of the U-shaped frame 5. The rib plate strips 8 are arranged along the length direction of the horizontal part of the U-shaped frame 5. Under the action of the rib plate strips 8, the anti-deformation performance of the U-shaped frame 5 is improved.

[0022] Refer to Figure 1, a vertically arranged hydraulic cylinder 6 is installed on the upper surface of the horizontal part of the U-shaped frame 5. The movable end of the hydraulic cylinder 6 penetrates through a through hole opened on the upper surface of the horizontal part of the U-shaped frame 5 and is installed with a cable anchor dynamometer 11. By connecting a fixed connection disk 9 to the movable end of the hydraulic cylinder 6 and installing the cable anchor dynamometer 11 on the lower surface of the connection disk 9, the connection range between the movable end of the hydraulic cylinder 6 and the cable anchor dynamometer 11 is increased. A threaded hole is opened on the upper surface of the disk body 10 below the cable anchor dynamometer 11, and the end of the guide rod 7 processed with an external thread is threadedly connected into the threaded hole to complete the assembly of the guide rod 7 and the disk body 10. The guide rod 7 penetrates through a guide hole opened on the upper surface of the horizontal part of the U-shaped frame 5 and matching with the guide rod 7. After placing the bearing sheath between the cable anchor dynamometer 11 and the cushion plate 2, the position of the disk body 10 is adjusted so that the disk body 10 is below the cable anchor dynamometer 11. Then, under the shielding of the disk body 10, the cable anchor dynamometer 11 is prevented from directly contacting the bearing sheath, playing a role in protecting the cable anchor dynamometer 11. The hydraulic cylinder 6 is controlled to extend, and then the hydraulic cylinder 6 drives the cable anchor dynamometer 11 to move downward, so that the disk body 10 and the cushion plate 2 jointly act to squeeze the bearing sheath, and the guide rod 7 on the disk body 10 is inserted into the guide hole, realizing the restriction of the moving track of the disk body 10.

[0023] Refer to Figure 1 , Figure 2 and Figure 3 , a circular groove 13 is formed by the downward depression of the upper surface of the base 1 and is located directly below the cable anchor dynamometer 11. A cushion plate 2 for supporting the bearing sheath is inserted into the circular groove 13. A plurality of slots 14 are uniformly opened on the outer surface of the cushion plate 2 and are arranged along the radial direction of the cushion plate 2. Plug blocks 15 are inserted into the slots 14. The plug blocks 15 are fixedly connected to the support arm plate 3. A plurality of uniformly arranged limit slots 12 communicating with the circular groove 13 are formed by the downward depression of the upper surface of the base 1. The plug blocks 15 on the support arm plate 3 are inserted into the slots 14 on the cushion plate 2 to realize the plug connection between the support arm plate 3 and the cushion plate 2. When the cushion plate 2 is placed in the circular groove 13, the support arm plate 3 is inserted into the corresponding limit slots 12. Then, the pressure received by the cushion plate 2 is dispersed to multiple parts of the base 1 through the support arm plate 3. The cushion plate 2 is placed in the circular groove 13 on the base 1 to realize the assembly of the cushion plate 2 and the base 1. When the bearing sheath is placed on the cushion plate 2, when the bearing sheath is pressed, its reaction force acts on the cushion plate 2. When the surface of the cushion plate 2 is damaged, only the cushion plate 2 needs to be replaced without replacing the base 1, realizing local replacement of the part directly contacting the bearing sheath, prolonging the service life of the base 1, and reducing the cost of replacing parts.

[0024] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For a person skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0025] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bearing sheath pressure test device, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a U-shaped frame (5). The upper surface of the horizontal part of the U-shaped frame (5) is provided with a hydraulic cylinder (6). The hydraulic cylinder (6) is arranged vertically. The movable end of the hydraulic cylinder (6) penetrates through the U-shaped frame (5) and is provided with a cable anchor force meter (11). A protective member for protecting the cable anchor force meter (11) is provided below the cable anchor force meter (11). The upper surface of the base (1) is recessed downward to form a circular groove (13). The circular groove (13) is directly below the cable anchor force meter (11). A cushion plate (2) for supporting the bearing sheath is inserted in the circular groove (13). A plurality of slots (14) are uniformly formed on the outer surface of the cushion plate (2). The slots (14) are arranged along the radial direction of the cushion plate (2). Plug blocks (15) are inserted in the slots (14). The plug blocks (15) are fixedly connected to the support arm plates (3). The upper surface of the base (1) is recessed downward to form a plurality of uniformly arranged limiting grooves (12) communicating with the circular groove (13). The support arm plates (3) are inserted in the limiting grooves (12).

2. The pressure testing device for a bearing sheath according to claim 1, wherein: The protective member includes a disc body (10). The disc body (10) is provided below the cable anchor force meter (11). A vertically arranged guide rod (7) is installed on the upper surface of the disc body (10). A guide hole matching the guide rod (7) is formed on the upper surface of the horizontal part of the U-shaped frame (5). The guide rod (7) penetrates through the guide hole.

3. The pressure testing device for a bearing sheath according to claim 2, wherein: External threads are processed on the outer surface of the lower end of the guide rod (7). A threaded hole is formed on the upper surface of the disc body (10). The lower end of the guide rod (7) is threadedly connected in the threaded hole.

4. The pressure testing device for a bearing sheath according to claim 1, wherein: The movable end of the hydraulic cylinder (6) is fixedly connected with a connection disc (9). The cable anchor force meter (11) is installed on the lower surface of the connection disc (9).

5. A bearing sheath pressure testing device according to claim 1, characterized in that: A through hole is formed at the position where the U-shaped frame (5) installs the hydraulic cylinder (6). The movable end of the hydraulic cylinder (6) penetrates through the through hole.

6. The pressure testing device for a bearing sheath according to claim 1, characterized in that: Connection ears (4) are fixedly connected to both parallel sides of the base (1). Fixing holes are formed on the upper surfaces of the connection ears (4).

7. A bearing sheath pressure testing device according to claim 1, characterized in that: Two symmetrically arranged rib strips (8) are installed on the upper surface of the horizontal part of the U-shaped frame (5). The rib strips (8) are arranged along the length direction of the horizontal part of the U-shaped frame (5).

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