Test tool for testing slippage degree of lining inner pipe

Abstract

The utility model belongs to the technical field of test tool clamps, and particularly discloses a test tool for testing the slippage degree of a lining inner pipe, which comprises a tool outer frame, a plurality of vertical threaded columns are fixedly arranged on a bottom plate of the tool outer frame, and the vertical threaded columns penetrate through an axial pressure applying tool and are in sliding connection with the axial pressure applying tool. A lower contact auxiliary material is fixedly installed on the side, close to the axial pressure applying tool, of the bottom plate, an upper contact auxiliary material is fixedly installed on the side, close to the bottom plate, of the axial pressure applying tool, a lining inner pipe is connected between the upper contact auxiliary material and the lower contact auxiliary material in an abutting mode, and a lateral pressure applying tool is connected to the outer side wall of the lining inner pipe in an abutting mode. The axial pressure applying tool slides under the action of the vertical threaded column and is locked by the nut, so that the axial pressure applying tool axially locks the lining inner pipe; and the axial pressure applying tool is used for laterally applying pressure to the lining inner pipe to test the slippage degree of the lining inner pipe between the lower contact auxiliary material and the upper contact auxiliary material.

Description

TECHNICAL FIELD

[0001] The utility model relates to test frock fixture technical field, especially in a kind of test frock of bushing inner tube sliding degree test. BACKGROUND

[0002] With the state analysis test of test from basis to complexity constantly derivation, basic single destruction experiment cannot satisfy modern automobile pre-production state analysis, and the simple destruction experiment of prior art cannot analyze the sliding degree analysis of different contact medium to bushing inner tube after real vehicle state. UTILITY MODEL CONTENT

[0003] The utility model discloses a kind of test frock of bushing inner tube sliding degree test, so as to the test of sliding degree of bushing inner tube.

[0004] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0005] A kind of test frock of bushing inner tube sliding degree test, including frock outer frame, the bottom plate of the frock outer frame is fixedly installed multiple vertical thread column, the vertical thread column penetrates axial pressure frock and is slidably connected with axial pressure frock, the side of the bottom plate close to axial pressure frock is fixedly installed lower contact auxiliary material, the side of axial pressure frock close to bottom plate is fixedly installed upper contact auxiliary material, the abutment of the upper contact auxiliary material and lower contact auxiliary material has bushing inner tube, the lateral of the bushing inner tube abutment has lateral pressure frock.

[0006] The following is the technical scheme further defined by the utility model, one end of the vertical thread column penetrates axial pressure frock and is threadedly connected with nut, and the nut is abutted with axial pressure frock.

[0007] The following is the technical scheme further defined by the utility model, bolt through slot is connected with bolt, the both side walls of axial pressure frock are all set up with threaded hole, and the bolt is threadedly connected with threaded hole by passing through bolt through slot.

[0008] The following is the technical scheme further defined by the utility model, the number of vertical thread column is 6, axial pressure frock is set up with 6 through holes, and 6 vertical thread columns are respectively threadedly connected with nut by passing through 6 through holes.

[0009] The following is the technical scheme further defined by the utility model, lower auxiliary material installation groove is set up on the bottom plate, the lower contact auxiliary material is embedded in lower auxiliary material installation groove, and the bottom plate is locked with lower contact auxiliary material by lower auxiliary material fixing plate.

[0010] The following is a further defined technical solution of this utility model: the top of the lower auxiliary material mounting groove is an opening one, which is for the lower contact auxiliary material to be inserted; the side of the lower auxiliary material mounting groove is an opening two; the lower auxiliary material fixing plate seals the opening two with screws; the lower auxiliary material fixing plate presses the lower contact auxiliary material to lock the lower contact auxiliary material.

[0011] The following is a further defined technical solution of this utility model: the axial pressure tooling is provided with an upper auxiliary material mounting groove, the upper contact auxiliary material is embedded in the upper auxiliary material mounting groove, and the axial pressure tooling locks the upper contact auxiliary material through an upper auxiliary material fixing plate.

[0012] The following is a further defined technical solution of this utility model: the bottom of the upper auxiliary material mounting groove is an opening three, which is for the upper contact auxiliary material to be placed in. The side of the upper auxiliary material mounting groove is an opening four. The upper auxiliary material fixing plate seals the opening four with screws. The upper auxiliary material fixing plate presses the upper contact auxiliary material to lock the upper contact auxiliary material.

[0013] The following is a further defined technical solution of this utility model: the lateral pressure tooling has an inner tube fitting groove at one end near the inner tube of the bushing, and the inner tube fitting groove is adapted to the shape of the outer side wall of the inner tube of the bushing.

[0014] Compared with the prior art, the present invention has the following technical effects:

[0015] This utility model, through the design of the overall structure, allows the axial pressure tool to slide under the action of the vertical threaded column and be locked by the nut, thereby axially locking the inner tube of the bushing; the axial pressure tool applies lateral pressure to the inner tube of the bushing, testing the degree of slippage of the inner tube of the bushing between the lower contact auxiliary material and the upper contact auxiliary material, and replacing the lower contact auxiliary material and the upper contact auxiliary material with different materials to test the degree of slippage of the inner tube of the bushing under different materials.

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 yes Figure 1 Structural disassembly diagram.

[0020] Reference numerals: 1. Tooling frame; 101. Bolt slot; 102. Lower auxiliary material mounting slot; 2. Vertical threaded column; 3. Axial pressure tooling; 301. Threaded hole; 302. Upper auxiliary material mounting slot; 4. Lower contact auxiliary material; 5. Upper contact auxiliary material; 6. Inner tube of bushing; 7. Lateral pressure tooling; 8. Lower auxiliary material fixing plate; 9. Upper auxiliary material fixing plate. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be understood that the terms "a" and "b" 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. Therefore, a feature defined as "a" or "b" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0025] like Figure 1As shown, a test fixture for testing the slippage degree of the inner tube of a bushing is provided, which mainly consists of a fixture outer frame 1, a vertical threaded column 2, an axial pressure fixture 3, a lower contact auxiliary material 4, an upper contact auxiliary material 5, a lateral pressure fixture 7, a lower auxiliary material fixing plate 8, and an upper auxiliary material fixing plate 9. The axial pressure fixture 3 slides under the action of the vertical threaded column 2 and is locked by the nut, thereby axially locking the inner tube 6 of the bushing with the axial pressure fixture 3; the axial pressure fixture 3 applies lateral pressure to the inner tube 6 of the bushing and tests the degree of slippage of the inner tube 6 of the bushing between the lower contact auxiliary material 4 and the upper contact auxiliary material 5. The lower contact auxiliary material 4 and the upper contact auxiliary material 5 of different materials are replaced to test the degree of slippage of the inner tube 6 of the bushing under different materials; the lower contact auxiliary material 4 is fixed to the bottom plate of the fixture outer frame 1 by the lower auxiliary material fixing plate 8, and the upper contact auxiliary material 5 is fixed to the axial pressure fixture 3 by the upper auxiliary material fixing plate 9. The lower auxiliary material fixing plate 8 or the upper auxiliary material fixing plate 9 can be removed to facilitate the replacement of the lower contact auxiliary material 4 or the upper contact auxiliary material 5.

[0026] like Figure 2 As shown, six vertical threaded posts 2 are fixedly installed on the base plate of the outer frame 1 of the fixture. The axial pressure fixture 3 has six through holes. The six vertical threaded posts 2 pass through the six through holes and are threadedly connected to the nuts. The nuts abut against the axial pressure fixture 3. The six vertical threaded posts 2 are subjected to force more evenly. After preloading, there are gaps between the nuts on the vertical threaded posts 2. After the applied force to the axial pressure fixture 3 is removed, there will be a rebound force to offset this applied force. Therefore, the threaded posts are made of fine thread, which greatly improves the accuracy of the preload.

[0027] Both sides of the outer frame 1 of the fixture have bolt slots 101 (4 bolt slots 101, 2 on each side), and bolts (not shown in the figure) are connected to the bolt slots 101. Both sides of the axial pressure fixture 3 have threaded holes 301, and the bolts pass through the bolt slots 101 and are threaded into the threaded holes 301. After the 6 vertical threaded posts 2 are fixed, tightening the bolts on the two sides of the outer frame 1 of the fixture can also provide auxiliary fastening on both sides of the axial pressure fixture 3, ensuring that the preload will not be displaced after the applied force is unloaded, thus changing the preload and affecting the accuracy of the experiment. After the bolts are used on the side, they will move vertically downward under the action of the applied force, providing a guiding effect.

[0028] like Figure 2As shown, the lower contact auxiliary material 4 is fixedly installed on the upper side of the base plate. Specifically, the base plate has a lower auxiliary material installation groove 102, and the lower contact auxiliary material 4 is embedded in the lower auxiliary material installation groove 102. The base plate locks the lower contact auxiliary material 4 by the lower auxiliary material fixing plate 8. The top of the lower auxiliary material installation groove 102 is an opening one, which is for the lower contact auxiliary material 4 to be inserted. The side of the lower auxiliary material installation groove 102 is an opening two. The lower auxiliary material fixing plate 8 seals the opening two with screws. The lower auxiliary material fixing plate 8 presses the lower contact auxiliary material 4 to lock the lower contact auxiliary material 4.

[0029] The upper contact auxiliary material 5 is fixedly installed on the lower side of the axial pressure tooling 3. Specifically, the axial pressure tooling 3 has an upper auxiliary material mounting groove 302, and the upper contact auxiliary material 5 is embedded in the upper auxiliary material mounting groove 302. The axial pressure tooling 3 locks the upper contact auxiliary material 5 by means of the upper auxiliary material fixing plate 9. The bottom of the upper auxiliary material mounting groove 302 is an opening three, which is for the upper contact auxiliary material 5 to be inserted. The side of the upper auxiliary material mounting groove 302 is an opening four. The upper auxiliary material fixing plate 9 seals the opening four with screws. The upper auxiliary material fixing plate 9 presses the upper contact auxiliary material 5 to lock the upper contact auxiliary material 5.

[0030] The slippage of the inner tube 6 of the bushing in the vehicle-mounted state will vary depending on the contact auxiliary materials (including the selected material and roughness), thus affecting the degree of radial slippage after different pre-pressure on the inner tube 6 and different contact auxiliary materials. Therefore, a detachable lower auxiliary material fixing plate 8 and upper auxiliary material fixing plate 9 are designed to facilitate the replacement of different lower contact auxiliary materials 4 and upper contact auxiliary materials 5 for testing.

[0031] A bushing inner tube 6 abuts between the upper contact auxiliary material 5 and the lower contact auxiliary material 4, and a lateral pressure applying fixture 7 abuts against the outer wall of the bushing inner tube 6. After axial preloading is completed, a lateral pressure test is performed on the bushing inner tube 6. Since the bushing inner tube 6 is cylindrical, the head of the lateral pressure applying fixture 7 is adapted to the side wall of the bushing inner tube 6, that is: the head of the lateral pressure applying fixture 7 is semi-circular (the inner tube adaptation groove is semi-circular). During the test, no slippage will occur, and the force distribution is more uniform, and it is compatible with different bushing inner tubes 6.

[0032] The working process of this embodiment will be further described below:

[0033] Select upper contact auxiliary material 5 and lower contact auxiliary material 4 with different actual states of the inner tube 6 of the contact bushing, and install them in the corresponding positions;

[0034] The inner tube 6 of the bushing, as required by the experiment, is placed between the upper contact material 5 and the lower contact material 4.

[0035] A pre-compression device is used to apply a vertically downward pre-compression force above the axial pressure tool 3 to generate the specified force for the test.

[0036] After maintaining the force, screw 6 nuts onto the 6 vertical threaded columns 2. After tightening, observe the change in the applied force. If it remains unchanged, it is considered normal.

[0037] The outer frame of the tooling is secured a second time using bolts on both sides.

[0038] The pre-compression equipment removes the applied force;

[0039] The test fixture is rotated 90° so that the lateral pressure fixture 7 is on top. The test equipment is used to apply force to the lateral pressure fixture 7 to analyze the degree of slippage of the inner tube 6 of the bushing.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the disclosed methods and techniques, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Therefore, all equivalent changes made based on the shape, structure, and principle of this utility model without departing from its technical solution should be covered within the protection scope of this utility model.

Claims

1. A test fixture for testing the degree of slippage of the inner tube of a bushing, characterized in that, The fixture includes a tooling frame (1), on which a plurality of vertical threaded columns (2) are fixedly installed. The vertical threaded columns (2) penetrate the axial pressure tooling (3) and are slidably connected to the axial pressure tooling (3). A lower contact auxiliary material (4) is fixedly installed on the side of the bottom plate near the axial pressure tooling (3). An upper contact auxiliary material (5) is fixedly installed on the side of the axial pressure tooling (3) near the bottom plate. A bushing inner tube (6) abuts between the upper contact auxiliary material (5) and the lower contact auxiliary material (4). A lateral pressure tooling (7) abuts against the outer wall of the bushing inner tube (6).

2. The test fixture for testing the slippage degree of the inner tube of the bushing as described in claim 1, characterized in that, The vertical threaded column (2) is threaded through one end of the axial pressure tool (3) and connected to a nut, and the nut abuts against the axial pressure tool (3).

3. The test fixture for testing the slippage degree of the inner tube of the bushing as described in claim 2, characterized in that, The two side plates of the tooling frame (1) are provided with bolt through slots (101), and bolts are connected to the bolt through slots (101). The two side walls of the axial pressure tooling (3) are provided with threaded holes (301), and the bolts pass through the bolt through slots (101) and are threadedly connected to the threaded holes (301).

4. The test fixture for testing the slippage degree of the inner tube of the bushing as described in claim 2, characterized in that, The number of vertical threaded columns (2) is 6. The axial pressure tool (3) has 6 through holes. The 6 vertical threaded columns (2) pass through the 6 through holes and are threadedly connected to the nuts.

5. The test fixture for testing the slippage degree of the inner tube of the bushing as described in claim 1, characterized in that, The base plate has a lower auxiliary material mounting groove (102), the lower contact auxiliary material (4) is embedded in the lower auxiliary material mounting groove (102), and the base plate locks the lower contact auxiliary material (4) by the lower auxiliary material fixing plate (8).

6. The test fixture for testing the slippage degree of the inner tube of the bushing as described in claim 5, characterized in that, The top of the lower auxiliary material mounting groove (102) is an opening one, which is for the lower contact auxiliary material (4) to be inserted. The side of the lower auxiliary material mounting groove (102) is an opening two. The lower auxiliary material fixing plate (8) seals the opening two with screws. The lower auxiliary material fixing plate (8) presses the lower contact auxiliary material (4) to lock the lower contact auxiliary material (4).

7. The test fixture for testing the slippage degree of the inner tube of the bushing as described in claim 1, characterized in that, The axial pressure tool (3) has an upper auxiliary material mounting groove (302), the upper contact auxiliary material (5) is embedded in the upper auxiliary material mounting groove (302), and the axial pressure tool (3) locks the upper contact auxiliary material (5) by the upper auxiliary material fixing plate (9).

8. The test fixture for testing the slippage degree of the inner tube of the bushing as described in claim 7, characterized in that, The bottom of the upper auxiliary material mounting groove (302) is an opening three, which is used to insert the upper contact auxiliary material (5). The side of the upper auxiliary material mounting groove (302) is an opening four. The upper auxiliary material fixing plate (9) seals the opening four with screws. The upper auxiliary material fixing plate (9) presses the upper contact auxiliary material (5) to lock the upper contact auxiliary material (5).

9. The test fixture for testing the slippage degree of the inner tube of the bushing as described in claim 1, characterized in that, The lateral pressure tool (7) has an inner tube fitting groove at one end near the inner tube of the bushing (6), and the inner tube fitting groove is adapted to the shape of the outer side wall of the inner tube of the bushing (6).

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