Gear hub radial strength detection device

Abstract

The utility model belongs to the field of gear hub detection, and discloses a gear hub radial strength detection device which comprises a rack device used for supporting and applying force and further comprises two force transmission devices used for transmitting radial force through radial expansion, the force transmission devices are provided with support devices used for assisting in supporting, rebounding and resetting, the number of the force transmission devices is two, and the support devices are arranged on the rack device. The upper and lower parts are symmetrically arranged in the middle of the rack device; the support device comprises a supporting frame, four sliding grooves are evenly distributed in the supporting frame, sliding rods are arranged below the sliding grooves, and springs are installed on the sliding rods. The force transmission device comprises an expansion sleeve, and the expansion sleeve is of a four-petal type. According to the gear hub radial strength detection device provided by the utility model, the detection accuracy is improved through the arrangement that radial force is transmitted up and down at the same time for detection; the cushion block is movably arranged on the workbench, so that automatic centering of applied force is ensured; and through the arrangement that the conical surface is inserted into the radial expansion force application, the applicability and the stress uniformity are improved.

Description

Technical Field

[0001] The utility model belongs to the field of gear hub detection, in particular to a gear hub radial strength detection device. Background Art

[0002] Generally, in gear transmission mechanisms, such as automobile transmissions, power connection is often achieved in the form of gear hubs and gear sleeves. The gear hub is a disc-shaped part with an inner spline hole and an outer spline shaft, and is connected to the shaft by splines. When speed change is required, the gear sleeve on the gear hub moves axially, and the spline hole is simultaneously mounted on the coupling tooth of the gear (the coupling tooth is also a spline, and the parameters are the same as the gear hub), thus achieving power connection and transmission.

[0003] In contrast, the Chinese patent with announcement number CN205826302U discloses a device for testing the strength of a gear hub, including a compression cone block, a support block, and a gear hub component arranged between the compression cone block and the support block; the gear hub component includes an annular body, an outer gear ring is arranged on the outer periphery of the body, an inner gear ring is arranged on the inner periphery of the body, three key grooves are evenly distributed in the circumferential direction of the body, a slider groove is arranged between every two key grooves, an annular boss is arranged along the edge of the inner gear ring at the bottom end of the body, a first groove is formed between the annular boss and the outer gear ring, a second groove is formed between the top end of the body and the outer gear ring, the support block is provided with a convex portion supporting the first groove, the compression cone block is clamped on the inner side of the outer gear ring, and a gap is left between the compression cone block and the second groove.

[0004] However, the above patent can only detect the radial strength of one side of the gear hub once, which seriously affects the accuracy of the detection. Therefore, a new device needs to be designed. Utility Model Content

[0005] The purpose of the utility model is to provide a gear hub radial strength detection device to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A gear hub radial strength detection device comprises a frame device for supporting and applying force, and also comprises a force transmission device for radial expansion to transmit radial force, the force transmission device is provided with a bracket device for assisting in supporting rebound and resetting, two force transmission devices are provided, and are symmetrically arranged in the middle of the frame device from top to bottom; the bracket device comprises a support frame, four slide grooves are evenly distributed on the support frame, a slide rod is arranged under the slide groove, and a spring is installed on the slide rod; the force transmission device comprises an expansion sleeve, the expansion sleeve is a four-petal type, the outer surface is a cylindrical surface, the inner surface is a conical surface, and a slider is installed at the bottom of each petal of the expansion sleeve.

[0008] Furthermore: the frame device includes a workbench, a fixed frame is arranged on the workbench, a hydraulic cylinder is installed in the middle of the fixed frame, a pressure block is installed at the telescopic end of the hydraulic cylinder, a cushion block is arranged under the pressure block, and the cushion block is placed on the workbench.

[0009] Furthermore, the pressing block and the cushion block have the same structure, and both have a conical surface at one end.

[0010] Furthermore: the support frame is in a circular ring shape and is made of 45 steel material.

[0011] Furthermore: the sliding rod and the supporting frame are slidably connected, and the sliding rod and the sliding block are threadedly connected.

[0012] Furthermore: the slider and the expansion sleeve are riveted together.

[0013] Compared with the prior art, the beneficial effects are:

[0014] 1. The detection accuracy is improved by transmitting radial force detection simultaneously from top to bottom;

[0015] 2. The setting of placing the pad on the workbench flexibly ensures the automatic centering of the force;

[0016] 3. The setting of radial expansion force applied by inserting the conical surface increases the applicability and uniformity of force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a gear hub radial strength detection device described in the utility model;

[0018] Figure 2 It is a schematic diagram of a frame device of a gear hub radial strength detection device described in the utility model;

[0019] Figure 3 It is a schematic diagram of a bracket device of a gear hub radial strength detection device described in the utility model;

[0020] Figure 4 It is a top axonometric view of a force transmission device of a gear hub radial strength detection device described in the utility model;

[0021] Figure 5 It is a bottom-up axonometric view of a force transmission device of a gear hub radial strength detection device described in the utility model.

[0022] In the accompanying drawings, 1. rack device; 101. workbench; 102. fixed frame; 103. pressure block; 104. cushion block; 105. hydraulic cylinder; 2. bracket device; 201. support frame; 202. slide groove; 203. slide rod; 204. spring; 3. force transmission device; 301. expansion sleeve; 302. slider. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 5 A gear hub radial strength detection device includes a frame device 1 for supporting force application, and also includes a force transmission device 3 for radial expansion to transmit radial force. The force transmission device 3 is provided with a bracket device 2 for auxiliary support rebound reset. There are two force transmission devices 3, which are symmetrically arranged in the middle of the frame device 1.

[0025] In this embodiment: the frame device 1 includes a workbench 101, a fixed frame 102 is provided on the workbench 101, a hydraulic cylinder 105 is installed in the middle of the fixed frame 102, a pressure block 103 is installed at the telescopic end of the hydraulic cylinder 105, a cushion block 104 is provided below the pressure block 103, and the cushion block 104 is placed on the workbench 101. The pressure block 103 and the cushion block 104 have the same structure, and one end of each is a conical surface. The cushion block 104 is placed on the workbench 101, and the fixed frame 102 supports the hydraulic cylinder 105 to extend and push the pressure block 103 to move downward and insert it into the upper expansion sleeve 301. The pressure is transmitted downward through the gear hub, so that the cushion block 104 is inserted upward into the lower expansion sleeve 301;

[0026] In this embodiment: the support device 2 includes a support frame 201, the support frame 201 is annular, and is made of 45 steel. Four slide grooves 202 are evenly distributed on the support frame 201, and a slide rod 203 is arranged below the slide groove 202. The slide rod 203 is slidably connected to the support frame 201, and the slide rod 203 is threadedly connected to the slider 302. A spring 204 is installed on the slide rod 203. The support frame 201 moves through the slide groove 202 to limit the slider 302. The slide rod 203 supports the spring 204 to be compressed and released, and pushes the expansion sleeve 301 to reset;

[0027] In this embodiment: the force transmission device 3 includes an expansion sleeve 301, which is a four-petal type, with a cylindrical outer surface and a conical inner surface. A slider 302 is installed at the bottom of each petal of the expansion sleeve 301, and the slider 302 and the expansion sleeve 301 are riveted together. Under the limitation of the slider 302, the expansion sleeve 301 opens outward along the slide groove 202 on the support frame 201 to push the circumference of the gear hub to perform radial strength detection of the gear hub.

[0028] Working principle: first place the cushion block 104 on the workbench 101, then insert the lower expansion sleeve 301 on the cushion block 104, insert the gear hub on the lower expansion sleeve 301, and then insert the upper expansion sleeve 301 on the gear hub, and then start the hydraulic cylinder 105, so that the hydraulic cylinder 105 extends and pushes the pressure block 103 to move down and insert it into the upper expansion sleeve 301, and pushes the upper expansion sleeve 301 to move along the slide groove 2 on the support frame 201 under the limit of the slider 302. 02 opens and pushes the upper circumference of the gear hub outward, and the slider 302 compresses the spring 204 under the guidance of the slide rod 203. At the same time, the pressure is transmitted downward through the gear hub, so that the pad 104 is inserted upward into the expansion sleeve 301 below. Like the expansion sleeve 301 above, the lower circumference of the gear hub is opened and pushed outward at the same time to perform the radial strength test of the gear hub. After completion, the hydraulic cylinder 105 retracts, the radial force disappears, and the elastic force of the spring 204 pushes the expansion sleeve 301 to reset.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gear hub radial strength detection device, comprising a frame device (1) for supporting and applying force, characterized in that: It also includes a force transmission device (3) for radial expansion and transmission of radial force, the force transmission device (3) is provided with a support device (2) for auxiliary support rebound reset, and two force transmission devices (3) are provided, which are symmetrically arranged in the middle of the frame device (1) from top to bottom; The support device (2) comprises a support frame (201), four slide grooves (202) are evenly distributed on the support frame (201), a slide rod (203) is arranged below the slide groove (202), and a spring (204) is installed on the slide rod (203); The force transmission device (3) comprises an expansion sleeve (301), the expansion sleeve (301) is a four-petal type, the outer surface is a cylindrical surface, and the inner surface is a conical surface. A sliding block (302) is installed at the bottom of each petal of the expansion sleeve (301).

2. A gear hub radial strength detection device according to claim 1, characterized in that: The frame device (1) comprises a workbench (101), a fixed frame (102) is arranged on the workbench (101), a hydraulic cylinder (105) is installed in the middle of the fixed frame (102), a pressure block (103) is installed at the telescopic end of the hydraulic cylinder (105), a cushion block (104) is arranged below the pressure block (103), and the cushion block (104) is placed on the workbench (101).

3. A gear hub radial strength detection device according to claim 2, characterized in that: The pressing block (103) and the cushion block (104) have the same structure, and both have a conical surface at one end.

4. A gear hub radial strength detection device according to claim 1, characterized in that: The support frame (201) is in the shape of a ring and is made of 45 steel.

5. The gear hub radial strength detection device according to claim 1, characterized in that: The sliding rod (203) and the supporting frame (201) are slidably connected, and the sliding rod (203) and the sliding block (302) are threadedly connected.

6. A gear hub radial strength detection device according to claim 1, characterized in that: The slider (302) and the expansion sleeve (301) are riveted together.

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