Axial clearance rapid measuring device

Abstract

A rapid axial clearance measuring device belongs to the technical field of axial clearance measurement and comprises a thrust rod and a clearance measuring dial indicator, a thrust handle is arranged at the front end of the thrust rod, and a counter-force sleeve is arranged at the rear end of the thrust rod; the front end of the counter-force sleeve is connected with the thrust rod, and the rear end of the counter-force sleeve can be arranged at the end of the half shaft assembly in a sleeving mode. The rear end of the thrust rod is coaxially connected with a threaded connecting rod located in the counter-force sleeve, and a connecting screw hole corresponding to the threaded connecting rod is formed in the axis position of the half shaft assembly. The gap measuring dial indicator is fixed on the connecting mechanism and is connected with the wheel-side planet carrier assembly through the connecting mechanism, and the measuring end of the gap measuring dial indicator is in contact with the counter-force sleeve. The axial clearance rapid measuring device is reasonable in design, simple in structure, convenient to operate, wide in application range, capable of effectively improving the measuring accuracy and improving the working efficiency, and suitable for popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of axial clearance measurement, in particular to a device for quickly measuring axial clearance. Background Art

[0002] In the automobile manufacturing industry, during the assembly of the drive axle assembly with a wheel-side reducer, one end of the half-shaft assembly is assembled inside the wheel-side planetary carrier assembly, and the overall clearance needs to be controlled within a certain range, that is, a certain amount of movement is allowed between the half-shaft assembly, retaining spring, adjusting gasket, thrust gasket, sun gear assembly, wheel-side planetary carrier assembly and other components to ensure the normal operation of the axle assembly.

[0003] If the gap is too large, the axial play of the half-axle assembly will be too large, which will cause loud noise during vehicle driving, increase friction between transmission parts, and reduce the service life of the bridge assembly; if the gap is too small, it will cause eccentric wear between the half-axle assembly and the thrust washer, which will not only increase fuel consumption during operation, but also cause serious heating during the operation of the half-axle assembly. In severe cases, thermal decay will occur, and the service life of the half-axle assembly will be reduced by more than 40%. Therefore, when the bridge assembly leaves the factory, the staff needs to measure the axial clearance of the half-axle assembly in the wheel-side planetary carrier assembly, that is, the play of the half-axle assembly, to ensure that the axial clearance is controlled within the required range.

[0004] At present, workers generally use a feeler gauge for measurement, that is, the feeler gauge is inserted into the gap to measure the size of the gap. Although the above traditional measurement method can complete the measurement work, it still has the following shortcomings in actual use:

[0005] 1. The feeler gauge itself has elastic deformation, and the gap error is large during the measurement process.

[0006] 2. Feeler gauges are easy to wear. Since each person has different usage habits, the wear speed of the feeler gauge is also inconsistent. However, companies have a fixed inspection cycle for feeler gauges, so severely worn feeler gauges will lead to a high product defective rate.

[0007] 3. Feeler gauge measurement: its measurement principle is more suitable for the scenario of "point measurement". It is not suitable for wheel rim assembly, and the error caused by "point measurement" is uncontrollable.

[0008] 4. Feeler gauge measurement can only measure fixed values, such as 0.1mm, 0.2mm, 0.3mm, etc. For scenes that require precise gaps, feeler gauge detection is ineffective. Utility Model Content

[0009] The purpose of the utility model is to overcome the shortcomings of the prior art such as large measurement errors and small application range, and to provide an axial clearance rapid measurement device, which has reasonable design, simple structure, convenient operation and wide application range. It can not only effectively improve measurement accuracy, but also improve work efficiency and is suitable for promotion.

[0010] The utility model is realized by the following technical scheme: an axial clearance quick measuring device, comprising a thrust rod which can be connected with a half-shaft assembly and a measuring clearance dial gauge which can be installed on a wheel-side planetary carrier assembly; a thrust handle is arranged at the front end of the thrust rod, and a reaction sleeve is arranged at the rear end of the thrust rod; the front end of the reaction sleeve is coaxially connected with the thrust rod, and the rear end of the reaction sleeve can be sleeved on the end of the half-shaft assembly through an assembly hole on the wheel-side planetary carrier assembly, so that the cylinder wall of the reaction sleeve can press the adjusting gasket and the thrust gasket; The rear end is coaxially connected with a threaded connecting rod located inside the reaction sleeve, and a connecting screw hole corresponding to the threaded connecting rod is opened at the axial position of the half-shaft assembly. The thrust rod is screwed to the half-shaft assembly through the threaded connecting rod and the connecting screw hole, so that the thrust rod and the half-shaft assembly form a whole; the measuring clearance dial indicator is fixed on the connecting mechanism, and the measuring clearance dial indicator is detachably connected to the wheel-side planetary carrier assembly through the connecting mechanism, and the measuring end of the measuring clearance dial indicator contacts the front end of the reaction sleeve, so that the measuring clearance dial indicator can measure the movement of the reaction sleeve.

[0011] A further improvement of the utility model is that the reaction sleeve is a cylindrical structure with a closed front end and an open rear end.

[0012] A further improvement of the utility model is that a fixing screw hole is provided at the axial center position of the front end surface of the reaction sleeve, a thread is provided at the front end of the thrust rod, and the thrust rod is threadedly connected to the reaction sleeve and positioned by a fixing nut.

[0013] A further improvement of the utility model is that the connecting mechanism includes a magnetic suction seat and a support frame, the magnetic suction seat is adsorbed on the wheel side planetary carrier assembly, the support frame is fixed on the magnetic suction seat, and the support frame is connected to the measuring gap dial indicator.

[0014] A further improvement of the utility model is that the support frame includes a fixed rod and a connecting rod, the fixed rod and the connecting rod are vertically connected to each other, so that the fixed rod and the connecting rod form an L-shaped structure, the fixed rod is connected to the magnetic suction seat, and the connecting rod is connected to the measuring gap dial indicator.

[0015] A further improvement of the utility model is that the fixing rod is movably connected to the connecting rod through the fixing kit, and the connecting rod is movably connected to the measuring gap dial indicator through the fixing kit.

[0016] A further improvement of the utility model is that the diameter of the threaded connecting rod is smaller than the diameter of the thrust rod.

[0017] A further improvement of the utility model is that the rear end of the threaded connecting rod is a tapered structure.

[0018] A further improvement of the utility model is that a mounting hole is provided at the axial center position of the rear end surface of the thrust rod, and the threaded connecting rod is interference-fitted with the thrust rod through the mounting hole.

[0019] A further improvement of the utility model is that the thrust handle is a rod body structure, the center position of the thrust handle is connected to the thrust rod, and the thrust handle is perpendicular to the thrust rod.

[0020] From the above technical scheme, it can be seen that the beneficial effects of the utility model are: the device achieves the purpose of measuring the movement of the half-axle assembly 3 by measuring the movement of the reaction sleeve with a gap micrometer, and achieves full circumference measurement in this way, that is, the gap measurement principle of the device is "surface measurement", thereby overcoming the defect of "point measurement", and visual measurement is also achieved by measuring the gap micrometer. It can be seen that the design of the device is reasonable, the overall structure is simple, the operation is convenient, and the application range is wide. It not only improves the measurement accuracy, but also improves the work efficiency, thereby ensuring product quality and facilitating production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model.

[0023] Figure 2 It is a structural schematic diagram of a half-shaft assembly, a wheel-side planetary carrier assembly and a reaction sleeve according to a specific embodiment of the utility model.

[0024] Figure 3 yes Figure 2 Enlarged view of part A in the figure.

[0025] Figure 4 It is a structural schematic diagram of a thrust rod, a reaction sleeve and a threaded connecting rod in a specific embodiment of the utility model.

[0026] 1. Thrust rod; 2. Measuring clearance dial indicator; 3. Half-axle assembly; 4. Wheel-side planetary carrier assembly; 5. Thrust handle; 6. Reaction sleeve; 7. Threaded connecting rod; 8. Fixing nut; 9. Magnetic suction seat; 10. Fixing rod; 11. Connecting rod; 12. Adjusting gasket; 13. Thrust gasket. DETAILED DESCRIPTION

[0027] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0028] Please refer to the attached Figure 1-4 , combined with a specific embodiment, it is described as follows: The utility model describes an axial clearance rapid measurement device, comprising a thrust rod 1 that can be connected to a half-shaft assembly 3 and a measuring clearance dial gauge 2 that can be installed on a wheel-side planetary carrier assembly 4.

[0029] The front end of the thrust rod 1 is provided with a thrust handle 5; specifically, the thrust handle 5 is a rod body structure, the center position of the thrust handle 5 is connected to the thrust rod 1, and the thrust handle 5 is perpendicular to the thrust rod 1. The rear end of the thrust rod 1 is provided with a reaction sleeve 6; specifically, the reaction sleeve 6 is a cylindrical structure with a closed front end and an open rear end.

[0030] The front end of the reaction sleeve 6 is coaxially connected to the thrust rod 1, and the rear end of the reaction sleeve 6 can be sleeved on the end of the half-shaft assembly 3 through the assembly hole on the wheel side planetary carrier assembly 4, so that the cylinder wall of the reaction sleeve 6 can press the adjustment gasket 12 and the thrust gasket 13. It should be noted that the inner diameter of the reaction sleeve 6 is between the diameter of the half-shaft assembly 3 and the diameter of the adjustment gasket 12, so as to ensure that the reaction sleeve 6 can be sleeved on the end of the half-shaft assembly 3 and press the adjustment gasket 12 at the same time.

[0031] The rear end of the thrust rod 1 is coaxially connected with a threaded connecting rod 7 located inside the reaction sleeve 6; specifically, a mounting hole is opened at the axial position of the rear end surface of the thrust rod 1, and the threaded connecting rod 7 is interference fit with the thrust rod 1 through the mounting hole; specifically, the diameter of the threaded connecting rod 7 is smaller than the diameter of the thrust rod 1, and the rear end of the threaded connecting rod 7 is a conical structure.

[0032] A connecting screw hole corresponding to the threaded connecting rod 7 is provided at the axis center of the half-shaft assembly 3, and the thrust rod 1 is screwed to the half-shaft assembly 3 through the threaded connecting rod 7 and the connecting screw hole, so that the thrust rod 1 and the half-shaft assembly 3 form a whole. It should be noted that the diameter of the threaded connecting rod 7 can be as small as possible as compared to the diameter of the thrust rod 1, so as to ensure that the threaded connecting rod 7 can be stably connected to the half-shaft assembly 3.

[0033] The measuring clearance dial gauge 2 is fixed on the connecting mechanism, and the measuring clearance dial gauge 2 is detachably connected to the wheel-side planetary carrier assembly 4 through the connecting mechanism, and the measuring end of the measuring clearance dial gauge 2 contacts the front end of the reaction sleeve 6, so that the measuring clearance dial gauge 2 can measure the movement amount of the reaction sleeve 6.

[0034] Specifically, the connecting mechanism includes a magnetic suction seat 9 and a support frame. The magnetic suction seat 9 is adsorbed on the wheel side planetary carrier assembly 4, the support frame is fixed on the magnetic suction seat 9, and the support frame is connected to the measuring gap dial indicator 2.

[0035] The use principle of this utility model:

[0036] Before the measurement, according to the existing assembly process of automobile parts, the staff first assembles automobile parts such as the half-shaft assembly 3, the wheel side planetary carrier assembly 4, the adjustment gasket 12, and the thrust gasket 13.

[0037] After the assembly is completed, the staff will install the device. The specific installation steps are as follows: first align the threaded connecting rod 7 with the connecting screw hole on the half-shaft assembly 3, and then turn the thrust handle 5 to drive the threaded connecting rod 7 to rotate. In this process, the threaded connecting rod 7 is screwed to the half-shaft assembly 3; at the same time, the reaction sleeve 6 will be sleeved on the end of the half-shaft assembly 3 through the assembly hole on the wheel-side planetary carrier assembly 4; that is, the thrust rod 1, the threaded connecting rod 7, and the half-shaft assembly 3 are connected as one, and the reaction sleeve 6 can press the adjustment gasket 12 and the thrust gasket 13. Finally, the measuring clearance dial gauge 2 is fixed to the wheel-side planetary carrier assembly 4 through the connecting mechanism. At this time, the measuring end of the measuring clearance dial gauge 2 contacts the front side of the reaction sleeve 6. It can be seen that measuring the movement of the reaction sleeve 6 by measuring the clearance dial gauge 2 is to measure the movement of the half-shaft assembly 3.

[0038] The specific measurement steps are as follows: first, pull the half-shaft assembly 3 forward to the limit through the thrust handle 5. During this process, the reaction sleeve 6 will squeeze the measuring end of the measuring clearance dial gauge 2 forward, and record the value displayed by the measuring clearance dial gauge 2, which is recorded as X1; then push the half-shaft assembly 3 backward to the limit through the thrust handle 5. During this process, the reaction sleeve 6 will pull the measuring end of the measuring clearance dial gauge 2 backward, and record the value displayed by the measuring clearance dial gauge 2, which is recorded as X2; the play clearance is recorded as Δ, and its value is: Δ=|X2-X1|. It can be seen that the value of Δ is the actual play of the half-shaft assembly 3, that is, the value of Δ can be used to determine whether the axial clearance of the half-shaft assembly 3 is too large or too small.

[0039] When the axial clearance needs to be adjusted, the staff first dismantles the device, and then selects a suitable adjustment gasket 12 according to the value of Δ, and finally replaces the required adjustment gasket 12 to complete the adjustment of the axial clearance.

[0040] For example, the axial clearance needs to be controlled between 0.1 mm and 0.3 mm. The play clearance is measured in the above manner and is 0.5 mm. It can be seen that the staff needs to add an adjustment gasket 12 with a thickness of 0.2-0.4 mm to ensure that the axial clearance is between 0.1-0.3 mm, thereby controlling the axial clearance within the required range.

[0041] In one embodiment, a fixing screw hole is provided at the axial center position of the front end surface of the reaction sleeve 6, a thread is provided at the front end of the thrust rod 1, and the thrust rod 1 is screwed to the reaction sleeve 6 and positioned by a fixing nut 8. The above structure realizes a detachable connection between the reaction sleeve 6 and the thrust rod 1, which is convenient for the staff to install and replace.

[0042] In one embodiment, the support frame includes a fixing rod 10 and a connecting rod 11, the fixing rod 10 and the connecting rod 11 are vertically connected, so that the fixing rod 10 and the connecting rod 11 form an L-shaped structure, the fixing rod 10 is connected to the magnetic suction seat 9, and the connecting rod 11 is connected to the measuring gap dial gauge 2. The above-mentioned support frame is more reasonable, has a simple structure, and is convenient for the staff to install the measuring gap dial gauge 2.

[0043] In one embodiment, the fixing rod 10 is movably connected to the connecting rod 11 through the fixing kit, and the connecting rod 11 is movably connected to the measuring gap dial gauge 2 through the fixing kit. The fixing kit can be a connecting sleeve, a bolt, etc., and the connecting rod 11 can slide on the fixing rod 10 through the fixing kit, and the measuring gap dial gauge 2 can slide on the connecting rod 11, so that the staff can adjust the position of the measuring gap dial gauge 2.

[0044] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0045] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0046] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for rapid measurement of axial clearance, characterized in that: The invention comprises a thrust rod (1) which can be connected to a half-shaft assembly (3) and a clearance measuring dial gauge (2) which can be installed on a wheel-side planetary carrier assembly (4); a thrust handle (5) is arranged at the front end of the thrust rod (1), and a reaction sleeve (6) is arranged at the rear end of the thrust rod (1); the front end of the reaction sleeve (6) is coaxially connected to the thrust rod (1), and the rear end of the reaction sleeve (6) can be sleeved on the end of the half-shaft assembly (3) through an assembly hole on the wheel-side planetary carrier assembly (4), so that the cylinder wall of the reaction sleeve (6) can press the adjustment gasket (12) and the thrust gasket (13); the rear end of the thrust rod (1) is coaxially connected to a reaction sleeve (6) which is located at the reaction sleeve ( 6) a threaded connecting rod (7) inside, a connecting screw hole corresponding to the threaded connecting rod (7) is opened at the axial position of the half-shaft assembly (3), the thrust rod (1) is screwed to the half-shaft assembly (3) through the threaded connecting rod (7) and the connecting screw hole, so that the thrust rod (1) and the half-shaft assembly (3) form a whole; the measuring clearance dial gauge (2) is fixed on the connecting mechanism, the measuring clearance dial gauge (2) is detachably connected to the wheel side planetary carrier assembly (4) through the connecting mechanism, and the measuring end of the measuring clearance dial gauge (2) contacts the front end of the reaction sleeve (6), so that the measuring clearance dial gauge (2) can measure the movement of the reaction sleeve (6).

2. The axial clearance rapid measurement device according to claim 1, characterized in that: The reaction sleeve (6) is a cylindrical structure with a closed front end and an open rear end.

3. The axial clearance rapid measurement device according to claim 2, characterized in that: A fixing screw hole is provided at the axial center position of the front end surface of the reaction sleeve (6), a thread is provided at the front end of the thrust rod (1), and the thrust rod (1) is threadedly connected to the reaction sleeve (6) and positioned by a fixing nut (8).

4. The axial clearance rapid measurement device according to claim 3, characterized in that: The connection mechanism comprises a magnetic suction seat (9) and a support frame, wherein the magnetic suction seat (9) is adsorbed on the wheel side planetary frame assembly (4), the support frame is fixed on the magnetic suction seat (9), and the support frame is connected to the gap measuring dial gauge (2).

5. The axial clearance rapid measurement device according to claim 4, characterized in that: The support frame comprises a fixing rod (10) and a connecting rod (11), wherein the fixing rod (10) and the connecting rod (11) are vertically connected so that the fixing rod (10) and the connecting rod (11) form an L-shaped structure, the fixing rod (10) is connected to a magnetic suction seat (9), and the connecting rod (11) is connected to a measuring gap dial indicator (2).

6. The axial clearance rapid measurement device according to claim 5, characterized in that: The fixing rod (10) is movably connected to the connecting rod (11) via the fixing kit, and the connecting rod (11) is movably connected to the measuring gap dial indicator (2) via the fixing kit.

7. The axial clearance rapid measurement device according to claim 6, characterized in that: The diameter of the threaded connecting rod (7) is smaller than the diameter of the thrust rod (1).

8. The axial clearance rapid measurement device according to claim 7, characterized in that: The rear end of the threaded connecting rod (7) is a tapered structure.

9. The axial clearance rapid measurement device according to claim 8, characterized in that: A mounting hole is provided at the axial center position of the rear end surface of the thrust rod (1), and the threaded connecting rod (7) is interference-fitted with the thrust rod (1) through the mounting hole.

10. The axial clearance rapid measurement device according to claim 9, characterized in that: The thrust handle (5) is a rod body structure, the center position of the thrust handle (5) is connected to the thrust rod (1), and the thrust handle (5) is perpendicular to the thrust rod (1).

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