CN216978612U - Pressure testing device for detecting strength of bearing sheath - Google Patents

Abstract

The utility model discloses a pressure test device for detecting the strength of a bearing sheath, which comprises a base plate, an upper surface of the base plate is fixedly connected with a square frame, a clamping table is fixedly connected to the upper surface of the base plate, and the upper surface of the clamping table is fixedly connected with A bar-shaped slot is opened, a servo motor is installed on the upper surface of the zong-shaped frame, the output end of the servo motor is fixedly connected with a screw rod, and the inner wall of the zong-shaped frame is slidably connected with a movable plate. The pressure test device for the strength detection of the bearing sheath, the servo motor drives the screw to rotate, and the movable plate can drive the detection pressure block to move down, and the rotation of the screw can drive the positioning plate to move up and down, and move the positioning plate to match the bearing sheath. When the movable plate drives the detection pressure block to move down, when the contact switch is touched, the servo motor is automatically turned off. At this time, the pressure of the detection pressure block on the bearing sheath on the clamping table is the same as its standard pressure, and then It is convenient to adjust the drop height of the detection pressure block according to the bearing sheath of different sizes, and the flexibility is high.

Description

A pressure test device for strength detection of bearing sheath

technical field

The utility model relates to the technical field of bearing detection, in particular to a pressure test device for strength detection of a bearing sheath.

Background technique

Bearing is a common mechanical component, mainly used to reduce the friction coefficient of mechanical rotation and ensure its rotation accuracy. In order to improve the service life of the bearing when the bearing is in use, a bearing sheath is often set on the outer circumference of the bearing to facilitate the bearing. Play a certain protective role, but the bearing sheath needs to be pressure tested before being put into use to ensure that the sheath has the strength to protect the bearing and meets the production standard of the sheath.

At present, in the experimental test of bearing sheath, the most common way is to test the sheath by hydraulic device. However, the hydraulic device cannot adjust the stroke, so it is impossible to carry out different standard pressure tests on different bearing sheaths. As a result, a hydraulic device can only perform pressure test on one bearing sheath, which has poor flexibility, is inconvenient to adjust, and is relatively inconvenient to use.

Utility model content

The purpose of the present utility model is to provide a pressure test device for the strength detection of the bearing sheath, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a pressure test device for the strength detection of a bearing sheath, comprising a bottom plate, the upper surface of the bottom plate is fixedly connected with a square frame, and the upper surface of the bottom plate is fixedly connected with a clamping device. The upper surface of the clamping table is provided with a strip-shaped groove, a servo motor is installed on the upper surface of the bracket, the output end of the servo motor is fixedly connected with a screw rod, and the inner wall of the bracket is slidably connected with a movable plate. A detection pressure block is installed on the lower surface, a screw rod is connected to the upper surface of the square frame in rotation, a positioning plate is slidably connected to the inner wall of the square frame, and the positioning plate is threadedly connected with the surface of the screw rod, and a contact switch is fixedly connected to the upper surface of the positioning plate. , the contact switch is electrically connected with the servo motor, and a control panel is installed on the right side of the frame.

Preferably, the bottom end of the screw rod penetrates through the square frame and is rotatably connected with the upper surface of the bottom plate, and the movable plate is threadedly connected with the screw rod.

Preferably, the bottom end of the screw rod extends to the inside of the square frame and is rotatably connected with the inner bottom wall of the square frame.

Preferably, a drive motor is installed on the left side of the clamping table, a bidirectional lead screw is fixedly connected to the output end of the drive motor, and a moving block is threadedly connected to the front and back threads on the surface of the bidirectional lead screw.

Preferably, the two moving blocks are both slidably connected to the inner bottom wall of the clamping table, the opposite surfaces of the two moving blocks are provided with fixing grooves, the inner walls of the fixing grooves are fixedly connected with springs, and the inner walls of the fixing grooves are slidably connected with L The end of the spring away from the inner wall of the fixing groove is fixedly connected with the L-shaped connecting rod.

Preferably, the top ends of the two L-shaped connecting rods are fixedly connected with an arc-shaped top plate, and the L-shaped connecting rods are slidably connected with the inner wall of the bar-shaped groove.

beneficial effect

The utility model provides a pressure test device for strength detection of a bearing sheath, which has the following beneficial effects:

1. The pressure test device for the strength detection of the bearing sheath, the servo motor drives the screw to rotate, and the movable plate can drive the detection pressure block to move down, and the screw can be rotated to drive the positioning plate to move up and down, and the positioning plate can be moved to the bearing sheath. At the matched standard pressure position, when the movable plate drives the detection pressure block to move down, when the contact switch is touched, the servo motor is automatically turned off. At this time, the pressure of the detection pressure block on the bearing sheath on the clamping table is the same as the standard pressure. , and then it is convenient to adjust the drop height of the detection pressure block according to the bearing sheaths of different sizes, which improves the flexibility of the experimental device.

2. The pressure test device for the strength detection of the bearing sheath, the drive motor can drive the two moving blocks to move in reverse through the bidirectional screw, and at the same time drive the two arc-shaped top plates to squeeze and position the sheath from the inner wall of the bearing sheath, effectively solving the problem. It is easy to increase the vertical stress of the sheath and lead to inaccurate pressure test results, which not only improves the detection accuracy of the sheath, but also improves the stability of the sheath when being tested. More convenient to use.

Description of drawings

1 is a schematic diagram of the front section of the utility model;

Fig. 2 is the enlarged schematic diagram of the structure at place A in Fig. 1;

FIG. 3 is a schematic diagram of a three-dimensional explosion structure of a square frame of the present invention.

In the picture: 1 base plate, 2 傂-shaped frame, 3 clamping table, 4 lead screw, 5 movable plate, 6 detection pressure block, 7 screw rod, 8 positioning plate, 9 contact switch, 10 two-way lead screw, 11 moving block, 12 Spring, 13L-shaped connecting rod, 14 arc-shaped top plate.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1-3, the present utility model provides a technical solution: a pressure test device for the strength detection of a bearing sheath, comprising a bottom plate 1, the upper surface of the bottom plate 1 is fixedly connected with a rake frame 2, and the upper surface of the bottom plate 1 is The clamping table 3 is fixedly connected, the upper surface of the clamping table 3 is provided with a bar-shaped groove, the upper surface of the square frame 2 is installed with a servo motor, and the output end of the servo motor is fixedly connected with a screw rod 4, and the bottom of the screw rod 4 is fixedly connected. The end penetrates through the square frame 2 and is rotatably connected with the upper surface of the base plate 1 .

The inner wall of the square frame 2 is slidably connected with a movable plate 5, the movable plate 5 is threadedly connected with the screw rod 4, the lower surface of the movable plate 5 is provided with a detection pressure block 6, and the upper surface of the square frame 2 is rotatably connected with a screw 7, and the screw The bottom end of 7 extends to the interior of the spar-shaped frame 2, and is rotatably connected with the inner bottom wall of the sing-shaped frame 2, the inner wall of the stub-shaped frame 2 is slidably connected with a positioning plate 8, and the positioning plate 8 is connected with the surface of the screw 7. , the upper surface of the positioning plate 8 is fixedly connected with a contact switch 9, the contact switch 9 is electrically connected with the servo motor, and a control panel is installed on the right side of the square frame 2.

The servo motor drives the screw 4 to rotate, which can drive the detection pressure block 6 to move down through the movable plate 5, and rotate the screw 7 to drive the positioning plate 8 to move up and down, and move the positioning plate 8 to the standard pressure position matched with the bearing sheath, When the movable plate 5 drives the detection pressure block 6 to move down, when the contact switch 9 is touched, the servo motor is automatically turned off. At this time, the pressure of the detection pressure block 6 on the bearing sheath on the clamping table 3 is the same as its standard pressure, and then It is convenient to adjust the descending height of the detection pressure block 6 according to bearing sheaths of different sizes, which improves the flexibility of the experimental device.

A drive motor is installed on the left side of the clamping table 3, the output end of the drive motor is fixedly connected with a two-way screw 10, and the front and back threads of the surface of the two-way screw 10 are threadedly connected with moving blocks 11, and the two moving blocks 11 are both threaded. In sliding connection with the inner bottom wall of the clamping table 3 , the opposite surfaces of the two moving blocks 11 are provided with fixing grooves, and the inner walls of the fixing grooves are fixedly connected with the springs 12 .

An L-shaped connecting rod 13 is slidably connected to the inner wall of the fixing groove, one end of the spring 12 away from the inner wall of the fixing groove is fixedly connected to the L-shaped connecting rod 13, and the top ends of the two L-shaped connecting rods 13 are fixedly connected with an arc-shaped top plate 14, and L The connecting rod 13 is slidably connected with the inner wall of the strip groove.

The drive motor can drive the two moving blocks 11 to move in the opposite direction through the bidirectional screw 10, and at the same time drive the two arc-shaped top plates 14 to squeeze and position the sheath from the inner wall of the bearing sheath, which effectively solves the problem of extrusion from the ring surface of the sheath. Increasing the vertical stress of the sheath leads to the problem of inaccurate pressure test results, which not only improves the detection accuracy of the sheath, but also improves the stability of the sheath during the pressure test, making it more convenient to use.

Working principle: When using the pressure test device, first place the bearing sheath on the clamping table 3, turn on the drive motor, and move the two moving blocks 11 to the opposite sides. At this time, the two arc-shaped top plates 14 are in the sheath. When the inner wall moves, when the two moving blocks 11 move to the fixed position, the two arc-shaped top plates 14 pull the two springs 12 through the L-shaped connecting rod 13 to deform, which can not only be suitable for sheaths with different inner diameters, but also protect the drive motor. In overload operation, after the arc-shaped top plate 14 locates the sheath, according to the different detection pressures required by different bearing sheaths, rotate the screw 7 to move the positioning plate 8 to the same height as the standard pressure required by the bearing sheath, and turn on the servo motor , The detection pressure block 6 is moved down by the screw 4 and the movable plate 5. During the movement, the lower surface of the movable plate 5 touches the contact switch 9, and the contact switch 9 automatically turns off the servo motor through the control panel. At this time, the detection pressure block 6. The pressure of the bearing sheath on the clamping table 3 is the same as its standard pressure, which is convenient to adjust the descending height of the detection pressure block 6 according to the bearing sheath of different sizes, and the flexibility is high. At the same time, the bearing sheath passes through the two arc-shaped top plates 14 Extrusion positioning from the inner wall effectively solves the problem of extruding from the sheath ring surface, which easily increases the vertical stress of the sheath, resulting in inaccurate pressure test results. The detection accuracy is high, and the stability of the bearing sheath can also be improved. More convenient to use.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a bearing sheath intensity detects uses pressure testing device, includes bottom plate (1), and the last fixed surface of bottom plate (1) is connected with Jiong shape frame (2), its characterized in that: the last fixed surface of bottom plate (1) is connected with centre gripping platform (3), the strip groove has been seted up to the upper surface of centre gripping platform (3), the last surface mounting of Jiong shape frame (2) has servo motor, servo motor's output end fixedly connected with lead screw (4), the inner wall sliding connection of Jiong shape frame (2) has fly leaf (5), the lower surface mounting of fly leaf (5) has detection briquetting (6), the upper surface rotation of Jiong shape frame (2) is connected with screw rod (7), the inner wall sliding connection of Jiong shape frame (2) has locating plate (8), and the surface threaded connection of locating plate (8) and screw rod (7), the last fixed surface of locating plate (8) is connected with contact switch (9), contact switch (9) and servo motor electric connection, control panel is installed on the right side of Jiong shape frame (2).

2. The pressure testing device for detecting the strength of the bearing sheath according to claim 1, characterized in that: the bottom end of the screw rod (4) penetrates through the Jiong-shaped frame (2) and is rotatably connected with the upper surface of the bottom plate (1), and the movable plate (5) is in threaded connection with the screw rod (4).

3. The pressure testing device for detecting the strength of the bearing sheath according to claim 1, characterized in that: the bottom end of the screw rod (7) extends to the interior of the Jiong-shaped frame (2) and is rotatably connected with the inner bottom wall of the Jiong-shaped frame (2).

4. The pressure testing device for detecting the strength of the bearing sheath according to claim 1, characterized in that: the left side of centre gripping platform (3) is installed driving motor, driving motor's output fixedly connected with two-way lead screw (10), and the equal threaded connection in positive and negative screw thread department on two-way lead screw (10) surface has movable block (11).

5. The pressure testing device for detecting the strength of the bearing sheath according to claim 4, characterized in that: two movable blocks (11) all with the interior diapire sliding connection of centre gripping platform (3), the fixed slot has all been seted up to the opposite face of two movable blocks (11), fixed slot inner wall fixedly connected with spring (12), the inner wall sliding connection of fixed slot has L shape connecting rod (13), the one end and the L shape connecting rod (13) fixed connection that fixed slot inner wall was kept away from in spring (12).

6. The pressure test device for detecting the strength of the bearing sheath according to claim 5, characterized in that: two the equal fixedly connected with arc roof (14) in top of L shape connecting rod (13), and the inner wall sliding connection in L shape connecting rod (13) and bar groove.

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