Automobile differential housing diameter measurement gauge

Abstract

The utility model discloses an automobile differential shell diameter measuring gauge, which belongs to the technical field of gauges and comprises a mounting block, sleeves are arranged on two opposite sides of the outside of the mounting block, L-shaped telescopic rods are arranged in the sleeves, one end of each L-shaped telescopic rod is connected with a winding rope, and a driving block is arranged at the top of the mounting block. A large rotary disc and a small rotary disc are arranged on the two sides of the interior of the driving block through rotary shafts, the tail end of the winding rope is fixedly connected with the large rotary disc, a lifting handle is arranged on the inner side of the top of the driving block in a sliding mode, a connecting rope is wound around the periphery of the small rotary disc, and the bottom of the lifting handle is fixedly connected with the connecting rope. And then the winding rope is wound by the large rotating disc, so that the winding rope pulls the L-shaped telescopic rod to contract towards the interior of the sleeve, the inner side of the bottom end of the L-shaped telescopic rod can be quickly attached to the peripheral surface of the differential shell, the laser range finder is used for completing measurement work, and the design greatly improves the measurement efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of gauges, and in particular relates to a gauge for measuring the diameter of a car differential housing. Background Art

[0002] Generally, a differential is a mechanism that enables the left and right drive wheels or the front and rear drive wheels to rotate at different speeds. When the car is turning or driving on an uneven road, the left and right wheels rotate at different speeds, that is, to ensure that the drive wheels on both sides perform pure rolling motion. The differential is set to adjust the speed difference between the left and right wheels. The differential makes the car's rotation speed basically the same when driving in a curve. The differential housing supports and protects the internal parts of the differential. Due to the special shape of the differential housing, after the differential housing is processed, multiple diameters of its outer surface need to be measured. The existing measurement methods have problems such as inconvenient measurement and slow speed. How to solve these problems becomes crucial.

[0003] According to patent number CN202320531367.0, a vehicle differential case diameter measuring jig includes a holding rod, a connecting sleeve is fixedly connected to a side wall of one side of the holding rod, a through hole is opened between the center positions of the front and rear side walls of the connecting sleeve, a connecting shaft is rotatably connected in the through hole, a laser measuring mechanism is arranged on the front side of the connecting shaft, the laser measuring mechanism includes a double-headed spring seat, the double-headed spring seat is fixedly connected to the front side wall of the connecting shaft, and a laser rangefinder is fixedly installed at the middle position of the front side wall of the double-headed spring seat.

[0004] The above technical solution still has certain technical defects in actual use. During use, since the telescopic property of the shading plate is achieved through a spring telescopic rod, it is necessary to pull the telescopic ends of the two spring telescopic rods outward with both hands during use, and then put them on the differential housing, which makes the operation more troublesome and not conducive to rapid measurement. Moreover, there is no obstruction on the inside of the shading plate. During measurement, it is easy to cause the differential housing to block the light of the laser rangefinder due to excessive downward pressure, and the light cannot act on the shading plate, thereby affecting the measurement accuracy. For this reason, we propose a measuring fixture for the diameter of an automobile differential housing. Utility Model Content

[0005] The utility model aims to provide a measuring tool for the diameter of a differential housing of an automobile, so as to solve the existing problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a measuring tool for the diameter of a differential case of an automobile, comprising a mounting block, a large turntable and a small turntable, wherein sleeves are fixedly mounted on opposite sides of the outside of the mounting block, an L-shaped telescopic rod is slidably connected to the inside of the sleeve, a winding rope is fixedly connected to the center position of one end of the L-shaped telescopic rod extending to the inside of the sleeve, a driving block is arranged on the top of the mounting block, a large turntable and a small turntable are movably arranged on both sides of the inside of the driving block through a rotating shaft, the end of the winding rope is fixedly connected to the large turntable and wound around the outer circumference of the large turntable, a handle is slidably arranged on the inner side of the top of the driving block, a connecting rope is wound around the outer circumference of the small turntable, and the bottom of the handle is fixedly connected to the connecting rope.

[0007] Preferably, a laser rangefinder is provided at the bottom of the mounting block, laser emission heads are provided at both ends of the laser rangefinder, a shading plate is fixedly embedded at the inner top end of the L-shaped telescopic rod, and a protrusion is provided at the inner middle part of the L-shaped telescopic rod.

[0008] Preferably, an ejection spring is arranged inside the sleeve, and two ends of the ejection spring are fixedly connected to the sleeve and the L-shaped telescopic rod respectively.

[0009] Preferably, torsion springs are provided at both ends of the rotating shaft, and the two ends of the torsion springs are respectively fixedly connected to the large turntable or the small turntable and the inner wall of the driving block.

[0010] Preferably, steering wheels are provided on both sides of the inner bottom end of the driving block via a rotating shaft, and the winding rope passes through the bottom of the steering wheel and is in close contact with the steering wheel.

[0011] Preferably, the inner walls on both sides of the sleeve are provided with limiting grooves, and limiting blocks are arranged on both sides of the L-shaped telescopic rod extending to one end of the sleeve, and the limiting blocks extend into the limiting grooves and are slidably connected to the inner walls thereof.

[0012] Preferably, a handle is fixedly provided on the top of the driving block, and the handle is provided with an outer periphery of a handle and keeps a certain distance therefrom.

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

[0014] 1. By pulling the handle, the connecting rope drives the small turntable to rotate, thereby driving the large turntable to rotate, and then the large turntable reels the winding rope, so that the winding rope pulls the L-shaped telescopic rod to retract into the sleeve, so that the inner side of the bottom end of the L-shaped telescopic rod can quickly fit the outer peripheral surface of the differential housing, and the laser rangefinder is used to complete the measurement work, and then the ejection spring and torsion spring are used to quickly reset it after measurement, so as to quickly carry out the next measurement. This design greatly improves the measurement efficiency.

[0015] 2. By setting a protrusion on the inner side of the bottom end of the L-shaped telescopic rod, the protrusion is used to block the edge of the differential housing during measurement, so as to avoid the differential housing blocking the light emitted by the laser rangefinder during the measurement process, thereby affecting the measurement result. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the large turntable and the small turntable of the utility model.

[0019] In the figure: 1. mounting block; 2. sleeve; 3. L-shaped telescopic rod; 4. sunshade; 5. bump; 6. laser rangefinder; 7. limit groove; 8. limit block; 9. ejector spring; 10. winding rope; 11. steering wheel; 12. drive block; 13. large turntable; 14. small turntable; 15. connecting rope; 16. grip; 17. handle; 18. rotating shaft; 19. torsion spring. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-3 The utility model provides a technical solution for measuring the diameter of a vehicle differential housing: it includes a mounting block 1, a large turntable 13 and a small turntable 14, sleeves 2 are fixedly mounted on opposite sides of the outside of the mounting block 1, an L-shaped telescopic rod 3 is slidably connected to the inside of the sleeve 2, a winding rope 10 is fixedly connected to the center position of one end of the L-shaped telescopic rod 3 extending to the inside of the sleeve 2, a driving block 12 is arranged on the top of the mounting block 1, a large turntable 13 and a small turntable 14 are movably arranged on both sides of the inside of the driving block 12 through a rotating shaft 18, the end of the winding rope 10 is fixedly connected to the large turntable 13 and is wound around the outer periphery of the large turntable 13, a handle 17 is slidably arranged on the inner side of the top of the driving block 12, a connecting rope 15 is wound around the outer periphery of the small turntable 14, and the bottom of the handle 17 is fixedly connected to the connecting rope 15.

[0022] Specifically, a laser rangefinder 6 is provided at the bottom of the mounting block 1 , laser emission heads are provided at both ends of the laser rangefinder 6 , a shading plate 4 is fixedly inlaid on the inner top end of the L-shaped telescopic rod 3 , and a protrusion 5 is provided in the inner middle part of the L-shaped telescopic rod 3 .

[0023] Specifically, an ejection spring 9 is disposed inside the sleeve 2 , and two ends of the ejection spring 9 are fixedly connected to the sleeve 2 and the L-shaped telescopic rod 3 , respectively.

[0024] Specifically, torsion springs 19 are disposed at both ends of the rotating shaft 18 , and both ends of the torsion spring 19 are fixedly connected to the large rotating disk 13 or the small rotating disk 14 and the inner wall of the driving block 12 , respectively.

[0025] Specifically, steering wheels 11 are provided on both sides of the inner bottom end of the driving block 12 via a rotating shaft 18 , and the winding rope 10 passes through the bottom of the steering wheel 11 and is in close contact with the steering wheel 11 .

[0026] Specifically, the inner walls on both sides of the sleeve 2 are provided with limiting grooves 7, and the L-shaped telescopic rod 3 is extended to the inner end of the sleeve 2 and the limiting blocks 8 are arranged on both sides. The limiting blocks 8 extend into the limiting grooves 7 and are slidably connected with the inner walls thereof.

[0027] More specifically, a handle 16 is fixedly disposed on the top of the driving block 12 , and the handle 16 is provided with an outer periphery of a handle 17 and maintains a certain distance therefrom.

[0028] In this embodiment, when in use, the inspection tool is placed above the differential housing, and then the handle 17 is lifted upward, so that the small turntable 14 is driven to rotate through the connecting rope 15, thereby driving the large turntable 13 to rotate synchronously, and causing the torsion spring 19 to twist. Since the large turntable 13 and the small turntable 14 are concentric circle structures, the two can rotate synchronously, and the circumference of the large turntable 13 is much larger than that of the small turntable 14, so that the large turntable 13 is used to rotate to reel in the winding rope 10. By reeling in the winding rope 10, the L-shaped telescopic rod 3 is pulled to retract into the inside of the sleeve 2, and the ejection spring 9 is compressed until the bottom end of the L-shaped telescopic rod 3 is inside. The side contacts the outer periphery of the differential housing, and the convex block 5 blocks the differential housing to prevent the differential housing from blocking the light of the laser rangefinder 6, thereby affecting the measurement result. Finally, the laser rangefinder 6 is used for accurate measurement. After the measurement is completed, the handle 17 is released. Under the action of the ejection spring 9 and the torsion spring 19, the ejection spring 9 pushes the L-shaped telescopic rod 3 to extend outward and reset, thereby pulling the winding rope 10. At the same time, the torsion spring 19 is twisted and reset, driving the large turntable 13 and the small turntable 14 to rotate, so that the large turntable 13 releases the rope, and the small turntable 14 retracts the rope, and pulls the handle 17 downward to reset, completing a measurement.

[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 vehicle differential case diameter measuring jig, comprising a mounting block (1), a large turntable (13) and a small turntable (14), characterized in that: A sleeve (2) is fixedly installed on opposite sides of the outside of the mounting block (1); an L-shaped telescopic rod (3) is slidably connected to the inside of the sleeve (2); a winding rope (10) is fixedly connected to the center position of one end of the L-shaped telescopic rod (3) extending to the inside of the sleeve (2); a driving block (12) is arranged on the top of the mounting block (1); a large turntable (13) and a small turntable (14) are movably arranged on both sides of the inside of the driving block (12) through a rotating shaft (18); the end of the winding rope (10) is fixedly connected to the large turntable (13) and is wound around the outer periphery of the large turntable (13); a handle (17) is slidably arranged on the inner side of the top of the driving block (12); a connecting rope (15) is wound around the outer periphery of the small turntable (14); and the bottom of the handle (17) is fixedly connected to the connecting rope (15).

2. The automobile differential case diameter measuring jig according to claim 1, characterized in that: A laser rangefinder (6) is arranged at the bottom of the mounting block (1), and laser emission heads are arranged at both ends of the laser rangefinder (6). A shading plate (4) is fixedly inlaid on the inner top end of the L-shaped telescopic rod (3), and a convex block (5) is arranged at the inner middle part of the L-shaped telescopic rod (3).

3. The automobile differential case diameter measuring jig according to claim 1, characterized in that: An ejection spring (9) is arranged inside the sleeve (2), and two ends of the ejection spring (9) are respectively fixedly connected to the sleeve (2) and the L-shaped telescopic rod (3).

4. The automobile differential case diameter measuring jig according to claim 1, characterized in that: Torsion springs (19) are provided at both ends of the rotating shaft (18), and the two ends of the torsion spring (19) are respectively fixedly connected to the large rotating disk (13) or the small rotating disk (14) and the inner wall of the driving block (12).

5. The automobile differential case diameter measuring jig according to claim 1, characterized in that: Steering wheels (11) are arranged on both sides of the inner bottom end of the driving block (12) via a rotating shaft (18), and the winding rope (10) passes through the bottom of the steering wheel (11) and is in close contact with it.

6. The automobile differential case diameter measuring jig according to claim 1, characterized in that: The inner walls of both sides of the sleeve (2) are provided with limiting grooves (7), and the L-shaped telescopic rod (3) is extended to both sides of one end of the sleeve (2) to provide limiting blocks (8), and the limiting blocks (8) extend into the limiting grooves (7) and are slidably connected to the inner walls thereof.

7. The automobile differential case diameter measuring jig according to claim 1, characterized in that: A handle (16) is fixedly provided on the top of the driving block (12), and the handle (16) is provided with an outer periphery of a handle (17) and is kept at a certain distance therefrom.

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