Detection tool for rapid detection of vehicle driving shaft

Abstract

The utility model relates to a vehicle driving shaft rapid detection tool comprising a rectangular horizontal reference base plate, two sides of the reference base plate are respectively fixedly connected with two L-shaped detection reference seats, and a horizontal front detection reference surface is formed at the lower end of the front side of each detection reference seat. A horizontal rear detection reference surface extending downwards is formed on the lower end surface of the detection reference seat on the rear side of the front detection reference surface; a transverse front detection groove is formed between the front detection reference surface of the detection reference seat and the upper end face of the reference bottom plate, and a transverse rear detection groove is formed between the rear detection reference surface of the detection reference seat and the upper end face of the reference bottom plate. The detection tool is simple in structure, is provided with the through groove and the stop groove according to the go-no go gauge principle, can rapidly achieve the parallelism and spacing detection of the matching surface on the driving shaft through the through groove and the stop groove, and is convenient and rapid to operate.

Description

Technical Field:

[0001] The utility model relates to the technical field of detection tooling, and more specifically, to a detection tool for quickly detecting a vehicle drive shaft. Background Art:

[0002] Currently, vehicle drive shafts are generally manufactured by machining. Vehicle drive shafts vary according to vehicle models and there are many structures. Currently, there is a drive shaft 8 as shown in the attached drawing Figure 1 The drive shaft 8 includes a central coupling shaft 81 at the center. Limited position shafts 82 are provided at both ends of the coupling shaft 81. Threaded shafts 83 are formed at the ends of the limited position shafts 82. Horizontal cutting grooves 84 are formed on the outer walls of the upper and lower ends of the limited position shafts 82. The bottom surface of the cutting groove 84 is the mating surface when installing the drive shaft 8. It is necessary to ensure the parallelism and the distance between the upper and lower two cutting grooves 84. Currently, the cutting grooves 84 are formed by grinding. After the machining is completed, it is necessary to detect the parallelism and the distance dimensions. Therefore, it is necessary to design a detection tool that can quickly detect the parallelism and the distance. Summary of the Utility Model:

[0003] The purpose of the utility model is to provide a detection tool for quickly detecting a vehicle drive shaft in view of the deficiencies of the prior art. The structure of the detection tool is simple, and it is provided with a through groove and a stop groove based on the principle of a go-no-go gauge. The parallelism and the distance of the mating surface on the drive shaft can be quickly detected by using the through groove and the stop groove, and the operation is convenient and fast.

[0004] A detection tool for quickly detecting a vehicle drive shaft includes a rectangular horizontal reference base plate. Two groups of L-shaped detection reference seats are fixedly connected to both sides of the reference base plate. A horizontal front detection reference surface is formed at the lower end of the front side of the detection reference seat. A horizontal rear detection reference surface is formed on the lower end surface of the detection reference seat behind the front detection reference surface and extends downward.

[0005] A transverse front detection groove is formed between the front detection reference surface of the detection reference seat and the upper end surface of the reference base plate. A transverse rear detection groove is formed between the rear detection reference surface and the upper end surface of the reference base plate.

[0006] Preferably, the lower end surface of the rear side of the detection reference seat abuts against the upper end surface of the reference base plate. Two vertical mounting holes are formed at the rear side of the detection reference seat. Bolts are inserted into the mounting holes, and the lower ends of the bolts are screwed and fixed on the reference base plate.

[0007] Preferably, a longitudinal stepped hole is formed on the detection reference seat between the installation holes. A longitudinal detection rod is inserted into the stepped hole. The front end of the detection rod is inserted into the front detection groove and formed with a hemispherical probe. The rear end of the detection rod extends out of the detection reference seat and is screwed and fixed with a transverse identification shaft. An annular retaining ring is formed on the detection rod near the probe. A spring is sleeved on the detection rod behind the retaining ring. The front end of the spring presses against the retaining ring, and the rear end presses against the stepped surface of the stepped hole.

[0008] The said identification shaft abuts against the rear end face of the detection reference seat. A transverse observation shaft is formed in the middle of the identification shaft. A transverse identification groove is formed on the reference base plate behind the observation shaft.

[0009] Preferably, the distance from the front end of the probe to the front side edge of the rear detection reference seat is equal to the distance from the central axis of the observation shaft to the transverse center line of the identification groove. The groove width of the identification groove is greater than the diameter of the observation shaft and less than twice the diameter of the observation shaft.

[0010] Preferably, a longitudinal T-shaped guide rail groove is formed on the reference base plate between the detection reference seats. A sliding seat is slidably connected in the guide rail groove. The upper part of the sliding seat extends out of the upper end face of the reference base plate and is formed with a transverse positioning notch.

[0011] Preferably, the said sliding seat includes a rectangular sliding block. The positioning notch is formed on the upper end face of the sliding block. The bottom surface of the positioning notch is located below the upper end face of the reference base plate.

[0012] The guide rail groove on the reference base plate includes a narrow groove at the upper part and a wide groove at the lower part. The lower end of the sliding block is located in the wide groove of the guide rail groove and pivotally connected with several transverse lower pin shafts. The two ends of the lower pin shaft extend out of the sliding block and respectively abut against the stepped surface between the narrow groove and the wide groove. A convex block is formed on the rear end face of the sliding block. A transverse upper pin shaft is pivotally connected to the convex block. The two ends of the upper pin shaft extend out of the convex block and respectively abut against the upper end face of the reference base plate.

[0013] The beneficial effects of the present utility model are as follows:

[0014] The structure of this inspection tool is simple. It is provided with a through groove and a stop groove based on the principle of a go-no-go gauge. The parallelism and spacing of the mating surfaces on the drive shaft can be quickly detected by using the through groove and the stop groove, and the operation is convenient and fast. Description of the Drawings:

[0015] Figure 1 It is a three-dimensional structural schematic diagram of an existing drive shaft;

[0016] Figure 2 It is a top view structural schematic diagram of the present utility model;

[0017] Figure 3 It is a bottom view structural schematic diagram of the present utility model;

[0018] Figure 4 Schematic three-dimensional structure diagram of the present utility model when provided with a drive shaft;

[0019] Figure 5 Partial sectional view in side view of the present utility model when provided with a drive shaft.

[0020] In the figure: 1, reference base plate; 11, identification groove; 12, guide rail groove; 2, detection reference seat; 21, front detection reference surface; 22, rear detection reference surface; 23, mounting hole; 24, stepped hole; 3, bolt; 4, identification shaft; 41, observation shaft; 5, detection rod; 51, probe; 52, retaining ring; 6, spring; 7, sliding seat; 8, drive shaft; 81, coupling shaft; 82, limiting shaft; 83, threaded shaft; 84, cutting groove. Specific implementation manner:

[0021] Example: As shown in Figures 2 to 5 A fixture for rapid detection of a vehicle drive shaft, including a rectangular horizontal reference base plate 1. On both sides of the reference base plate 1, two groups of L-shaped detection reference seats 2 are fixedly connected. At the lower end of the front side of the detection reference seat 2, a horizontal front detection reference surface 21 is formed. On the lower end surface of the detection reference seat 2 behind the front detection reference surface 21, a horizontal rear detection reference surface 22 is formed which extends downward.

[0022] A transverse front detection groove a is formed between the front detection reference surface 21 of the detection reference seat 2 and the upper end surface of the reference base plate 1. The front detection groove a is equivalent to the through end of a go-no-go gauge; a transverse rear detection groove b is formed between the rear detection reference surface 22 and the upper end surface of the reference base plate 1. The rear detection groove b is equivalent to the no-go end of a go-no-go gauge.

[0023] The lower end surface of the rear side of the detection reference seat 2 abuts against the upper end surface of the reference base plate 1. Two vertical mounting holes 23 are formed on the rear side of the detection reference seat 2. Bolts 3 are inserted into the mounting holes 23, and the lower ends of the bolts 3 are screwed and fixed on the reference base plate 1.

[0024] A longitudinal stepped hole 24 is formed on the detection reference seat 2 between the mounting holes 23. A longitudinal detection rod 5 is inserted into the stepped hole 24. The front end of the detection rod 5 is inserted into the front detection groove a and is formed with a hemispherical probe 51. The rear end extends out of the detection reference seat 2 and is screwed and fixed with a transverse identification shaft 4; an annular retaining ring 52 is formed on the detection rod 5 near the probe 51. A spring 6 is sleeved on the detection rod 5 behind the retaining ring 52. The front end of the spring 6 abuts against the retaining ring 52, and the rear end abuts against the stepped surface of the stepped hole 24.

[0025] The identification shaft 4 abuts against the rear end surface of the detection reference seat 2; a transverse observation shaft 41 is formed in the middle of the identification shaft 4. The observation shaft 41 can be formed by turning the outer wall in the middle of the identification shaft 4; a transverse identification groove 11 is formed on the reference base plate 1 behind the observation shaft 41.

[0026] The distance from the front end of the probe 51 to the front side edge of the rear detection reference plane 22 is equal to the distance from the central axis of the observation axis 41 to the horizontal center line of the identification groove 11; the groove width of the identification groove 11 is greater than the diameter of the observation axis 41 and less than twice the diameter of the observation axis 41; when detecting the drive shaft 8, the drive shaft 8 can enter the front detection groove a, but when it cannot pass through the rear detection reference plane 22, its observation axis 41 falls directly above the identification groove 11. Furthermore, when the observation axis 41 falls directly above the identification groove 11, it can be judged as qualified, while when the observation axis 41 is located on the front side or the rear side of the identification groove 11, the drive shaft 8 is unqualified. Since whether the drive shaft 8 enters the rear detection groove b is not obvious, it is much more convenient to use the above identification structure for judgment.

[0027] A longitudinally T-shaped guide rail groove 12 is formed on the reference base plate 1 between the detection reference seats 2. A sliding seat 7 is slidably connected in the guide rail groove 12. The upper part of the sliding seat 7 extends out of the upper end surface of the reference base plate 1 and is formed with a horizontal positioning notch. The drive shaft 8 can be placed in the positioning notch, and the longitudinal movement of the drive shaft 8 can be realized through the sliding seat 7 to prevent the drive shaft 8 from rotating.

[0028] The sliding seat 7 includes a rectangular slider 71. The positioning notch is formed on the upper end surface of the slider 71, and the bottom surface of the positioning notch is located below the upper end surface of the reference base plate 1.

[0029] The guide rail groove 12 on the reference base plate 1 includes a narrow groove at the upper part and a wide groove at the lower part. The lower end of the slider 71 is located in the wide groove of the guide rail groove 12 and is pivotally connected with a plurality of transverse lower pin shafts 72. The two ends of the lower pin shaft 72 extend out of the slider 71 and respectively abut against the step surface between the narrow groove and the wide groove. A convex block 711 is formed on the rear end surface of the slider 71, and a transverse upper pin shaft 73 is pivotally connected to the convex block 711. The two ends of the upper pin shaft 73 extend out of the convex block 711 and respectively abut against the upper end surface of the reference base plate 1.

[0030] Working principle: The utility model is a fixture for quickly detecting a vehicle drive shaft. The main body of the fixture consists of a reference base plate 1 and two groups of detection reference seats 2. A front detection groove a and a rear detection groove b are formed between the detection reference seats 2 and the reference base plate 1. The front detection groove a is a through groove for detection, and the rear detection groove b is a stop groove for detection.

[0031] During detection, the drive shaft 8 is placed on the reference base plate 1, and the bottom surface of the cutting groove 84 on the lower side of the drive shaft 8 abuts against the upper end surface of the reference base plate 1. Then, the drive shaft 8 is moved. When the limiting shaft 82 of the cutting groove 84 part can enter the front detection groove a but cannot enter the rear detection groove b, the drive shaft 8 is qualified, while being unable to enter the front detection groove a or being able to enter the rear detection groove b is unqualified.

[0032] The embodiments are used to illustrate the present utility model by way of example and are not intended to limit the present utility model. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present utility model. Therefore, the scope of the rights protection of the present utility model shall be as set forth in the claims of the present utility model.

Claims

1. A fixture for rapid detection of a vehicle drive shaft, comprising a rectangular horizontal reference base plate (1), characterized in that: On both sides of the reference base plate (1), two groups of L-shaped detection reference seats (2) are fixedly connected respectively. At the lower end of the front side of the detection reference seat (2), a horizontal front detection reference surface (21) is formed. On the lower end surface of the detection reference seat (2) behind the front detection reference surface (21), a rear detection reference surface (22) which extends downward and is horizontal is formed. A transverse front detection groove (a) is formed between the front detection reference surface (21) of the detection reference seat (2) and the upper end surface of the reference base plate (1), and a transverse rear detection groove (b) is formed between the rear detection reference surface (22) and the upper end surface of the reference base plate (1).

2. The fixture for rapid detection of a vehicle drive shaft according to claim 1, characterized in that: The lower end surface of the rear side of the detection reference seat (2) abuts against the upper end surface of the reference base plate (1). Two vertical mounting holes (23) are formed on the rear side of the detection reference seat (2). Bolts (3) are inserted into the mounting holes (23), and the lower ends of the bolts (3) are screwed and fixed on the reference base plate (1).

3. The fixture for rapid detection of a vehicle drive shaft according to claim 2, characterized in that: A longitudinal stepped hole (24) is formed on the detection reference seat (2) between the mounting holes (23). A longitudinal detection rod (5) is inserted into the stepped hole (24). The front end of the detection rod (5) is inserted into the front detection groove (a) and a hemispherical probe (51) is formed. The rear end of the detection rod (5) extends out of the detection reference seat (2) and is screwed and fixed with a transverse identification shaft (4). An annular retaining ring (52) is formed on the detection rod (5) near the probe (51). A spring (6) is sleeved on the detection rod (5) behind the retaining ring (52). The front end of the spring (6) presses against the retaining ring (52), and the rear end presses against the stepped surface of the stepped hole (24). The identification shaft (4) abuts against the rear end surface of the detection reference seat (2). A transverse observation shaft (41) is formed in the middle of the identification shaft (4). A transverse identification groove (11) is formed on the reference base plate (1) behind the observation shaft (41).

4. The inspection tool for rapid inspection of a vehicle drive shaft according to claim 3, characterized in that: The distance from the front end of the probe (51) to the front side edge of the rear detection reference surface (22) is equal to the distance from the central axis of the observation shaft (41) to the transverse center line of the identification groove (11). The groove width of the identification groove (11) is greater than the diameter of the observation shaft (41) and less than twice the diameter of the observation shaft (41).

5. The inspection tool for rapid inspection of a vehicle drive shaft according to claim 1, characterized in that: A longitudinal T-shaped guide rail groove (12) is formed on the reference base plate (1) between the detection reference seats (2). A slide seat (7) is slidably connected in the guide rail groove (12). The upper part of the slide seat (7) extends out of the upper end surface of the reference base plate (1) and a transverse positioning notch is formed.

6. The inspection tool for rapid inspection of a vehicle drive shaft according to claim 5, characterized in that: The slide seat (7) includes a rectangular slider (71). The positioning notch is formed on the upper end surface of the slider (71), and the bottom surface of the positioning notch is located below the upper end surface of the reference base plate (1). The guide rail groove (12) on the reference base plate (1) includes a narrow groove at the upper part and a wide groove at the lower part. The lower end of the slider (71) is located in the wide groove of the guide rail groove (12), and a number of transverse lower pin shafts (72) are pivotally connected. The two ends of the lower pin shaft (72) extend out of the slider (71) and respectively abut against the step surface between the narrow groove and the wide groove. A convex block (711) is formed on the rear end surface of the slider (71), and a transverse upper pin shaft (73) is pivotally connected to the convex block (711). The two ends of the upper pin shaft (73) extend out of the convex block (711) and respectively abut against the upper end surface of the reference base plate (1).

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