Pressurizing mechanism for pressure test of bearing sheath

Abstract

The utility model provides a pressurizing mechanism for bearing sheath pressure test, which comprises a top plate, two ends of the top plate are both provided with vertically arranged support plates, the middle position of the upper surface of the top plate is provided with a hydraulic cylinder, the movable end of the hydraulic cylinder penetrates through the top plate, the hydraulic cylinder is sleeved with a straight cylinder, the upper end of the straight cylinder is fixedly connected with a thickened cover, and the thickened cover is fixedly connected with the top plate. The top of the hydraulic cylinder makes contact with the thickened cover, the lower end of the straight barrel makes contact with the top plate, the two sides, in the length direction of the top plate, of the hydraulic cylinder are each provided with a plurality of positioning seats arranged at equal intervals, the positioning seats are fixedly connected with the top plate, and the positioning seats are connected with inclined plates through connecting screws. One end, far away from the positioning seat, of the inclined plate is fixed on the outer surface of the straight barrel, and the length of the inclined plate on one side of the straight barrel is gradually increased in the direction far away from the straight barrel. The requirements on the mechanical strength of the connecting part of the hydraulic cylinder and the top plate and the material strength of the top plate are reduced.

Description

Technical Field

[0001] The utility model relates to a pressure-applying mechanism for pressure testing a bearing sleeve, belonging to the technical field of bearings. Background Art

[0002] In the actual use of bearings, in order to ensure the service life and use accuracy of the bearings, it is often necessary to set a matching bearing sleeve on the outer periphery of the middle bearing. Therefore, the bearing sleeve plays a role in protecting the bearing. In order to ensure the quality of the bearing sleeve, it is necessary to use a pressure test device to test the compressive strength of the bearing sleeve. The hydraulic cylinder is a commonly used pressurizing equipment for bearing sleeve pressure testing. The hydraulic cylinder is generally installed on the upper surface of the top plate, in which the connection range between the hydraulic cylinder and the top plate is small. When the hydraulic cylinder is extended to squeeze the bearing sleeve, the connection between the hydraulic cylinder and the top plate has a small connection range, and the reaction force received by the hydraulic cylinder is completely applied to the connection between the hydraulic cylinder and the top plate. Therefore, the mechanical strength requirements of the connection between the hydraulic cylinder and the top plate are relatively high, and the material strength requirements of the top plate are relatively high. Therefore, it is necessary to design a pressure mechanism for bearing sleeve pressure testing that disperses the reaction force received by the hydraulic cylinder. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a pressure-applying mechanism for pressure testing a bearing sleeve to solve the problems raised in the above-mentioned background technology. The utility model disperses the reaction force exerted on the hydraulic cylinder, reduces the requirements on the mechanical strength of the connection between the hydraulic cylinder and the top plate and the requirements on the strength of the top plate material.

[0004] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a pressure-applying mechanism for bearing sleeve pressure testing, comprising a top plate, both ends of the top plate are equipped with vertically arranged support plates, a hydraulic cylinder is installed in the middle position of the upper surface of the top plate, the movable end of the hydraulic cylinder passes through the top plate, a straight cylinder is sleeved on the hydraulic cylinder, a thickened cover is connected and fixed to the upper end of the straight cylinder, the top of the hydraulic cylinder is in contact with the thickened cover, the lower end of the straight cylinder is in contact with the top plate, the hydraulic cylinder is provided with a plurality of equidistantly arranged positioning seats on both sides along the length direction of the top plate, the positioning seats are connected and fixed to the top plate, the positioning seats are connected to an inclined plate by connecting screws, the end of the inclined plate away from the positioning seat is fixed to the outer surface of the straight cylinder, the length of the inclined plate on one side of the straight cylinder gradually increases in the direction away from the straight cylinder, and two pipe sleeves arranged up and down for inserting the oil supply hose are installed on the outer surface of the straight cylinder, and the pipe sleeves are communicated with the straight cylinder.

[0005] Furthermore, a circular hole is formed at the lower end of the inclined plate, a threaded hole is formed at one side of the positioning seat, and the connecting screw passes through the circular hole and is threadedly connected in the threaded hole.

[0006] Furthermore, a plurality of oil leakage holes are equidistantly provided in a circular shape in the area where the top plate is located within the straight cylinder, an oil collecting box is installed on the lower surface of the top plate, the upper end of the oil collecting box is open, a through hole is provided in the middle of the bottom of the oil collecting box, a shielding sleeve is provided on the upper side of the through hole, the lower end of the shielding sleeve is connected and fixed to the oil collecting box, the upper end of the shielding sleeve is in contact with the top plate, and the movable end of the hydraulic cylinder passes through the channel formed by the shielding sleeve and the through hole.

[0007] Furthermore, an oil drain port is installed at the bottom of the oil collecting box, and a threaded cover is threadedly connected to the lower end of the oil drain port.

[0008] Furthermore, a sealing ring is connected and fixed to the lower end of the straight tube, and the sealing ring is in contact with the top plate.

[0009] Furthermore, connecting plates are connected and fixed to two parallel side surfaces of the oil collecting box, and the connecting plates are connected and fixed to the top plate by screws.

[0010] Furthermore, the support plate and the top plate are arranged perpendicular to each other, and the support plate and the top plate are an integrally formed structure.

[0011] Beneficial effects of the utility model:

[0012] 1. After the hydraulic cylinder is connected to the top plate, a straight sleeve is placed on the hydraulic cylinder so that the top of the hydraulic cylinder contacts the thickened cover. At this time, the multiple inclined plates on the straight sleeve are aligned with the multiple positioning seats respectively, and the connecting screws are screwed into the screw holes through the round holes to complete the connection and fixation of the inclined plate and the top plate. At this time, when the hydraulic cylinder applies pressure to the bearing sleeve during the extension process, the reaction force received by the hydraulic cylinder is dispersed to multiple parts of the top plate through the thickened cover, the straight sleeve and the inclined plate, thereby reducing the requirements for the mechanical strength of the connection between the hydraulic cylinder and the top plate and the requirements for the strength of the top plate material.

[0013] 2. Make the oil supply hose connected to the hydraulic cylinder pass through the pipe sleeve. When oil leakage occurs at the connection between the oil supply hose and the hydraulic cylinder, the leaked oil is confined in the straight tube, thereby preventing the leaked oil from splashing at will.

[0014] 3. The oil confined in the straight cylinder flows into the space formed by the oil collecting box and the shielding sleeve through the oil leakage hole, so as to collect the leaked oil in a centralized manner. After opening the threaded cover, it is convenient to discharge the oil in the oil collecting box. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0016] Figure 1 It is a structural schematic diagram of a pressure mechanism for pressure testing a bearing sleeve of the utility model;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0019] Figure 4 It is a schematic diagram of the assembly of a shielding sleeve and an oil collecting box in a pressurizing mechanism for pressure testing a bearing sleeve according to the utility model;

[0020] In the figure: 1-top plate, 2-inclined plate, 3-thickened cover, 4-pipe sleeve, 5-straight cylinder, 6-hydraulic cylinder, 7-oil collecting box, 8-support plate, 9-round hole, 10-connecting screw, 11-screw hole, 12-positioning seat, 13-oil leakage hole, 14-threaded cover, 15-through hole, 16-oil drain port, 17-shielding sleeve. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] See also Figure 1 The utility model provides a technical solution: a pressure-applying mechanism for pressure testing a bearing sleeve, comprising a top plate 1, with vertically arranged support plates 8 installed at both ends of the top plate 1, wherein the support plate 8 and the top plate 1 are arranged perpendicular to each other and the support plate 8 and the top plate 1 are an integrally formed structure, a hydraulic cylinder 6 is installed at the middle position of the upper surface of the top plate 1, wherein the movable end of the hydraulic cylinder 6 passes through the top plate 1, and the support plate 8 and the top plate 1 together form a structure for supporting the hydraulic cylinder 6.

[0023] See also Figure 1 and Figure 2 , a straight cylinder 5 is sleeved on the hydraulic cylinder 6, and a thickened cover 3 is connected and fixed to the upper end of the straight cylinder 5, wherein the top of the hydraulic cylinder 6 contacts the thickened cover 3, and the sealing ring installed at the lower end of the straight cylinder 5 contacts the top plate 1. The hydraulic cylinder 6 is provided with a plurality of equidistantly arranged positioning seats 12 connected and fixed to the top plate 1 on both sides along the length direction of the top plate 1. A circular hole 9 is opened at the lower end of the inclined plate 2, and a threaded hole is opened on one side of the positioning seat 12, so that the connecting screw 10 passes through the circular hole 9 and is threadedly connected in the threaded hole to complete the connection and fixation of the inclined plate 2 and the top plate 1. The end of the inclined plate 2 away from the positioning seat 12 is fixed to the outer surface of the straight cylinder 5, wherein the length of the inclined plate 2 on one side of the straight cylinder 5 gradually increases in the direction away from the straight cylinder 5. When the hydraulic cylinder 6 applies pressure to the bearing sleeve during the extension process, the reaction force received by the hydraulic cylinder 6 is dispersed in multiple parts of the top plate 1 through the thickened cover 3, the straight cylinder 5 and the inclined plate 2, thereby reducing the requirements for the mechanical strength of the connection part between the hydraulic cylinder 6 and the top plate 1 and the requirements for the material strength of the top plate 1.

[0024] See also Figure 1 , Figure 3and Figure 4 The outer surface of the straight cylinder 5 is provided with two pipe sleeves 4 arranged up and down for inserting the oil supply hose, wherein the pipe sleeve 4 is communicated with the straight cylinder 5, and the area of ​​the top plate 1 in the straight cylinder 5 is provided with a plurality of oil leakage holes 13 in an annular shape and equidistantly, and an oil collecting box 7 with an open upper end is provided on the lower surface of the top plate 1, and connecting plates are connected and fixed on two parallel sides of the oil collecting box 7, wherein the connecting plates are connected and fixed to the top plate 1 by screws, and a through hole 15 is provided in the middle of the bottom of the oil collecting box 7, and the lower end of the shielding sleeve 17 on the upper side of the through hole 15 is connected and fixed to the oil collecting box 7, and the upper end of the shielding sleeve 17 is in contact with the top plate 1, and the hydraulic cylinder 6 is movable The moving end passes through the channel formed by the shielding sleeve 17 and the through hole 15. An oil drain port 16 is installed at the bottom of the oil collecting box 7. The lower end of the oil drain port 16 is threadedly connected with a threaded cover 14, so that the oil supply hose connected to the hydraulic cylinder 6 passes through the pipe sleeve 4. When oil leakage occurs at the connection between the oil supply hose and the hydraulic cylinder 6, the leaked oil is confined in the straight cylinder 5, thereby preventing the leaked oil from splashing at will. The oil confined in the straight cylinder 5 flows into the space formed by the oil collecting box 7 and the shielding sleeve 17 through the oil leakage hole 13, so as to realize the centralized collection of the leaked oil. After opening the threaded cover 14, it is convenient to discharge the oil in the oil collecting box 7.

[0025] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pressure mechanism for pressure testing a bearing sleeve, comprising a top plate (1), characterized in that: Both ends of the top plate (1) are provided with vertically arranged support plates (8); a hydraulic cylinder (6) is provided at the middle position of the upper surface of the top plate (1); the movable end of the hydraulic cylinder (6) penetrates the top plate (1); a straight cylinder (5) is sleeved on the hydraulic cylinder (6); a thickened cover (3) is connected and fixed to the upper end of the straight cylinder (5); the top of the hydraulic cylinder (6) is in contact with the thickened cover (3); the lower end of the straight cylinder (5) is in contact with the top plate (1); and the hydraulic cylinder (6) is provided with a plurality of equidistantly spaced hydraulic cylinders on both sides along the length direction of the top plate (1). A positioning seat (12) is arranged, the positioning seat (12) is connected and fixed to the top plate (1), the positioning seat (12) is connected to an inclined plate (2) via a connecting screw (10), the end of the inclined plate (2) away from the positioning seat (12) is fixed to the outer surface of the straight cylinder (5), the length of the inclined plate (2) on one side of the straight cylinder (5) gradually increases in a direction away from the straight cylinder (5), and the outer surface of the straight cylinder (5) is equipped with two pipe sleeves (4) arranged up and down for inserting an oil supply hose, and the pipe sleeves (4) are communicated with the straight cylinder (5).

2. A pressure mechanism for pressure testing a bearing sleeve according to claim 1, characterized in that: A circular hole (9) is formed at the lower end of the inclined plate (2), a threaded hole is formed on one side of the positioning seat (12), and the connecting screw (10) passes through the circular hole (9) and is threadedly connected in the threaded hole.

3. A pressure mechanism for pressure testing a bearing sleeve according to claim 1, characterized in that: The area of ​​the top plate (1) inside the straight cylinder (5) is provided with a plurality of oil leakage holes (13) in an annular shape and at equal intervals. An oil collecting box (7) is installed on the lower surface of the top plate (1). The upper end of the oil collecting box (7) is open. A through hole (15) is provided in the middle of the bottom of the oil collecting box (7). A shielding sleeve (17) is provided on the upper side of the through hole (15). The lower end of the shielding sleeve (17) is connected and fixed to the oil collecting box (7). The upper end of the shielding sleeve (17) is in contact with the top plate (1). The movable end of the hydraulic cylinder (6) passes through a channel formed by the shielding sleeve (17) and the through hole (15).

4. A pressure mechanism for pressure testing a bearing sleeve according to claim 3, characterized in that: An oil drain port (16) is installed at the bottom of the oil collecting box (7), and a threaded cover (14) is threadedly connected to the lower end of the oil drain port (16).

5. A pressure mechanism for pressure testing a bearing sleeve according to claim 3, characterized in that: A sealing ring is fixedly connected to the lower end of the straight cylinder (5), and the sealing ring is in contact with the top plate (1).

6. A pressure mechanism for pressure testing a bearing sleeve according to claim 3, characterized in that: Connecting plates are connected and fixed to two parallel side surfaces of the oil collecting box (7), and the connecting plates are connected and fixed to the top plate (1) via screws.

7. A pressure mechanism for pressure testing a bearing sleeve according to claim 1, characterized in that: The support plate (8) and the top plate (1) are arranged perpendicular to each other, and the support plate (8) and the top plate (1) are an integrally formed structure.

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