Device for enabling tire mounting main shaft to rotate and stretch out and draw back

Abstract

The utility model relates to the field of automobile part detection, and provides a device capable of enabling a tire mounting main shaft to rotate and stretch, which comprises an equipment shell, a driving motor, a rotating shaft joint assembly, a main shaft, a brake, a sliding sleeve assembly, a fixing sleeve and a test rim, the output end of the driving motor is connected with one side of the rotating shaft joint assembly arranged in the equipment shell, the other side of the rotating shaft joint assembly is fixedly connected with the main shaft, the brake is arranged in the equipment shell and used in cooperation with the main shaft, the main shaft is sleeved with the sliding sleeve assembly, and the sliding sleeve assembly is in sliding connection with the equipment shell. The fixing sleeve is fixedly installed at the other end of the equipment shell, the main shaft penetrates through the fixing sleeve to be fixedly connected with the testing rim, the testing rim is used for installing a tire, the tire testing device is reasonable in structure and convenient to use, and after the tire is installed at the front end of the tire main shaft, the tire and the main shaft can be manually and freely rotated and can also be driven by a motor to stretch out and draw back.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts detection, and the IPC classification number is: G01M17 / 02. In particular, it relates to a device that enables the tire mounting spindle to rotate and extend telescopically. Background Art

[0002] The tire strength test is an important part of the indoor test of tire performance. The test requires mounting the tire on the test rim, inflating it to the specified tire pressure, and then fixing it on the tire strength test machine. The test machine controls a cylindrical indenter to apply a force to the tire crown at a moving speed of 50 mm / min, and collects force and displacement data to calculate the breaking energy. One tire needs to be tested at 5 points that are approximately equally spaced along the center line of the tire tread. The indenter should be perpendicular to the tread and press on the tread blocks near the center line of the tread circumference to avoid pressing into the tread grooves. According to the above test content, it is required that the tire mounting spindle can rotate to meet the requirements of 5 test points in the circumferential direction of the tire; it is required that the tire mounting spindle can extend telescopically to avoid the indenter pressing into the tread grooves; it is also necessary to lock the adjusted tire position to prevent the tire from shifting during the force application process.

[0003] For example, a kind of automobile tire strength test machine disclosed in the application number: CN202122156084.6. The automobile tire strength test machine includes a detection host and a mounting frame; the mounting frame is arranged on one side of the detection host; the mounting frame includes a mounting table and a position adjustment device; the mounting table is used to place the automobile tire to be detected; the position adjustment device is connected to the mounting table, and the position adjustment device is used to adjust the position of the mounting table to realize mounting the automobile tire to be detected on the detection spindle of the detection host.

[0004] In the prior art, for the structure of the strength test machine for tire strength test, either the spindle can extend telescopically, but the position adjustment of the 5 equally distributed points requires removing the tire; or the spindle can rotate freely, but it cannot extend telescopically to adjust the axial position and cannot be locked. Summary of the Utility Model

[0005] In order to solve the problem that the spindle of the existing strength test machine cannot extend telescopically and rotate freely at the same time, the utility model provides a device that enables the tire mounting spindle to rotate and extend telescopically to solve this problem.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A device that enables the tire - mounting spindle to rotate and extend, comprising: a device housing, a drive motor, a rotary joint assembly, a spindle, a brake, a sliding sleeve assembly, a fixed sleeve, and a test rim. The drive motor is fixedly installed at one end of the device housing, and the output end of the drive motor is connected to one side of the rotary joint assembly arranged inside the device housing. The other side of the rotary joint assembly is fixedly connected to the spindle. The brake is arranged inside the device housing and is used in cooperation with the spindle. The sliding sleeve assembly is sleeved on the spindle, and the sliding sleeve assembly is slidably connected to the device housing. The fixed sleeve is fixedly installed at the other end of the device housing. The spindle passes through the fixed sleeve and is fixedly connected to the test rim, and the test rim is used for mounting the tire.

[0008] Preferably, the rotary joint assembly includes: a self - aligning bearing, a lead - screw drive assembly, a joint sleeve, and a guide key. The self - aligning bearing is fixedly installed at one end of the device housing, the output end of the drive motor passes through the self - aligning bearing and is connected to the input end of the lead - screw drive assembly. The output end of the lead - screw drive assembly is fixedly connected to the inner wall of the joint sleeve. A keyway is provided on the joint sleeve, and the joint sleeve is slidably connected to the guide key fixedly installed inside the device housing through the keyway. One side of the joint sleeve is connected to the spindle through a bearing.

[0009] Preferably, the lead - screw drive assembly includes: a lead - screw and a threaded sleeve. One end of the lead - screw is connected to the output end of the drive motor, and the other end of the lead - screw is threadedly connected to the threaded sleeve. The threaded sleeve is fixedly installed on the joint sleeve.

[0010] Preferably, the sliding sleeve assembly includes a sliding sleeve body and rolling bearings arranged inside the sliding sleeve body. The sliding sleeve body is rotatably connected to the spindle through the rolling bearings.

[0011] Preferably, the brake includes: an airbag and a limit frame. The airbag is arranged inside the limit frame, one side of the airbag is in contact with the spindle, and the input end of the airbag is connected to an external air source.

[0012] Preferably, the spindle can rotate freely manually.

[0013] The advantages of the present utility model are as follows: By setting the drive motor and the rotary joint assembly, the drive motor can drive the spindle to perform telescopic movement. By setting the sliding sleeve assembly, the spindle can rotate. With the combined use of the rotary joint assembly and the sliding sleeve assembly, the spindle can both extend and retract freely and rotate, so that the tire can be adjusted to a suitable test position. By setting the brake, the spindle with the adjusted position can be fixed, thereby meeting the multi - point position test, reducing the workload of the operator, shortening the time of test auxiliary work, and improving the working efficiency of the equipment. Description of the Drawings

[0014] The attached drawings, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the attached drawings:

[0015] Figure 1 is a cross-sectional view of the present utility model;

[0016] Figure 2 is a cross-sectional view of the rotary joint assembly of the present utility model;

[0017] Figure 3 is a cross-sectional view of the brake of the present utility model.

[0018] Explanation of reference numerals:

[0019] 1, equipment housing; 2, drive motor; 3, rotary joint assembly; 4, main shaft; 5, brake; 6, sliding sleeve assembly; 7, fixed sleeve; 8, test rim; 9, tire; 31, self-aligning bearing; 32, lead screw drive assembly; 33, joint sleeve; 34, guide key; 321, lead screw; 322, threaded sleeve; 51, airbag; 52, limit frame. Detailed implementation manners

[0020] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the attached drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] Embodiment 1 will be described in conjunction with Figure 1 as follows:

[0024] A device that enables the tire mounting spindle to rotate and extend includes: a device housing 1, a drive motor 2, a rotary joint assembly 3, a spindle 4, a brake 5, a sliding sleeve assembly 6, a fixed sleeve 7, and a test rim 8. The drive motor 2 is fixedly installed at one end of the device housing 1 by screws, and the output end of the drive motor 2 is connected to one side of the rotary joint assembly 3 arranged inside the device housing 1. After the drive motor 2 is started, it can drive the rotary joint assembly 3 to perform axial movement along the spindle 4.

[0025] The other side of the rotary joint assembly 3 is fixedly connected to the spindle 4. The brake 5 is arranged inside the device housing 1 and is used in cooperation with the spindle 4. After the brake 5 is started, it can fix the position of the spindle 4.

[0026] The sliding sleeve assembly 6 is sleeved on the spindle 4, and the sliding sleeve assembly 6 is slidably connected to the device housing 1. The sliding sleeve assembly 6 can enable the spindle 4 to rotate manually within the device housing 1.

[0027] The fixed sleeve 7 is fixedly installed at the other end of the device housing 1, and the fixed sleeve 7 maintains the stability of the spindle 4 during use.

[0028] The spindle 4 passes through the fixed sleeve 7 and is fixedly connected to the test rim 8. The test rim 8 is used for mounting the tire 9. The sliding sleeve assembly 6 includes a sliding sleeve body and rolling bearings arranged inside the sliding sleeve body. The spindle 4 rotates within the sliding sleeve body through the rolling bearings.

[0029] The sliding sleeve body is rotatably connected to the spindle 4 through the rolling bearings, and the spindle 4 can rotate freely manually.

[0030] The rotation of the spindle 4 is accurately centered by the rolling bearings; the sliding sleeve body does not rotate but can drive the spindle 4 to move axially.

[0031] By setting the drive motor 2 and the rotary joint assembly 3, the main shaft 4 can be driven by the drive motor 2 to perform telescopic movement. By setting the sliding sleeve assembly 6, the main shaft 4 can be rotated. With the combined use of the rotary joint assembly 3 and the sliding sleeve assembly 6, the main shaft 4 can not only perform free telescopic movement but also rotate, so that the tire 9 can be adjusted to a suitable test position. The telescopic and rotational movements of the main shaft 4 adopt different mechanisms, and their actions do not interfere with each other. They can be carried out separately or simultaneously.

[0032] By setting the brake 5, the main shaft 4 with the adjusted position can be fixed, thereby meeting the multi-point position test requirements.

[0033] Embodiment 2, on the basis of Embodiment 1, is described in combination with Figure 2 as follows:

[0034] The rotary joint assembly 3 includes: a self-aligning bearing 31, a lead screw drive assembly 32, a joint sleeve 33, and a guide key 34. The self-aligning bearing 31 is fixedly installed at one end of the equipment housing 1. The output end of the drive motor 2 passes through the self-aligning bearing 31 and is connected to the input end of the lead screw drive assembly 32. The output end of the lead screw drive assembly 32 is fixedly connected to the inner wall of the joint sleeve 33. A keyway is provided on the joint sleeve 33, and the joint sleeve 33 is slidably connected to the guide key 34 fixedly installed in the equipment housing 1 through the keyway. One side of the joint sleeve 33 is connected to the main shaft 4 through a bearing.

[0035] By setting the self-aligning bearing 31, the non-concentricity caused by the machining and installation errors of the drive part can be eliminated.

[0036] The lead screw drive assembly 32 includes: a lead screw 321 and a threaded sleeve 322. One end of the lead screw 321 is connected to the output end of the drive motor 2, and the other end of the lead screw 321 is threadedly connected to the threaded sleeve 322. The threaded sleeve 322 is fixedly installed on the joint sleeve 33.

[0037] By setting the guide key 34 and the keyway to prevent rotation, the lead screw 321 and the threaded sleeve 322 can effectively push the main shaft 4 to move.

[0038] Embodiment 3, on the basis of Embodiment 2, is described in combination with Figure 3 as follows:

[0039] The brake 5 includes: an airbag 51 and a limit frame 52. The airbag 51 is arranged inside the limit frame 52. The limit frame 52 is fixedly connected to the equipment housing 1 by screws. One side of the airbag 51 is in contact with the main shaft 4, and the input end of the airbag 51 is connected to an external air source.

[0040] By adopting airbag braking, the main shaft 4 cannot move either axially or circumferentially, ensuring that the tire 9 will not be pushed during the force application process.

[0041] Working principle of the utility model: During use, install the tire 9 on the test rim 8 and inflate it to the specified tire pressure. Press the push-button switch to turn on the brake 5, so that the main shaft 4 is in a free state. Manually rotate the tire 9 in the circumferential direction to the predetermined test position. Observe whether the indentation point of the indenter is in the tread groove. If so, press the corresponding push-button switch to move the main shaft 4 axially to avoid the tread groove. After confirming that the position is correct, press the push-button switch again to control the brake 5 to lock the position of the main shaft 4. After the tested tire 9 is installed, the test can be started. After one test point is completed, repeat the above steps to rotate the tire 9 to the next test point. After multiple-point tests are completed, the tested tire 9 can be removed from the test rim 8. The structure of the utility model is reasonable and easy to use. After the tire 9 is installed at the front end of the tire main shaft 4, the tire 9 and the main shaft 4 can be manually rotated freely or driven by a motor to expand and contract.

[0042] For those skilled in the art, the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the utility model; therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0043] The above is only the preferred embodiment of the utility model, and it is not intended to limit the utility model. Any minor modifications, equivalent replacements, and improvements made to the above embodiments based on the technical essence of the utility model should be included in the protection scope of the technical solution of the utility model.

Claims

1. A device that enables the tire mounting spindle to rotate and extend telescopically, characterized in that, Comprising: A device housing (1), a drive motor (2), a rotary joint assembly (3), a main shaft (4), a brake (5), a sliding sleeve assembly (6), a fixed sleeve (7), and a test rim (8). The drive motor (2) is fixedly installed at one end of the device housing (1). The output end of the drive motor (2) is connected to one side of the rotary joint assembly (3) disposed within the device housing (1). The other side of the rotary joint assembly (3) is fixedly connected to the main shaft (4). The brake (5) is disposed within the device housing (1) and is used in cooperation with the main shaft (4). The sliding sleeve assembly (6) is sleeved on the main shaft (4), and the sliding sleeve assembly (6) is slidably connected to the device housing (1). The fixed sleeve (7) is fixedly installed at the other end of the device housing (1). The main shaft (4) passes through the fixed sleeve (7) and is fixedly connected to the test rim (8). The test rim (8) is used for mounting a tire (9).

2. The device for enabling the tire mounting spindle to rotate and extend as claimed in claim 1, characterized in that, The rotary joint assembly (3) includes: a self-aligning bearing (31), a lead screw drive assembly (32), a joint sleeve (33), and a guide key (34). The self-aligning bearing (31) is fixedly installed at one end of the device housing (1). The output end of the drive motor (2) passes through the self-aligning bearing (31) and is connected to the input end of the lead screw drive assembly (32). The output end of the lead screw drive assembly (32) is fixedly connected to the inner wall of the joint sleeve (33). A keyway is provided on the joint sleeve (33), and the joint sleeve (33) is slidably connected to the guide key (34) fixedly installed within the device housing (1) through the keyway. One side of the joint sleeve (33) is connected to the main shaft (4) through a bearing.

3. A device for enabling a tire mounting spindle to rotate and extend, according to claim 2, characterized in that The lead screw drive assembly (32) includes: a lead screw (321) and a threaded sleeve (322). One end of the lead screw (321) is connected to the output end of the drive motor (2), and the other end of the lead screw (321) is threadedly connected to the threaded sleeve (322). The threaded sleeve (322) is fixedly installed on the joint sleeve (33).

4. A device for enabling a tire mounting spindle to rotate and extend, as claimed in claim 1, wherein The sliding sleeve assembly (6) includes a sliding sleeve body and rolling bearings disposed within the sliding sleeve body. The sliding sleeve body is rotatably connected to the main shaft (4) through the rolling bearings.

5. A device for enabling a tire mounting spindle to rotate and extend, according to claim 1, wherein The brake (5) includes: an airbag (51) and a limit frame (52). The airbag (51) is disposed within the limit frame (52). One side of the airbag (51) is in contact with the main shaft (4). The input end of the airbag (51) is connected to an external air source.

6. A device for enabling a tire mounting spindle to rotate and retract, according to claim 1, wherein The main shaft (4) can be manually rotated freely.

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