Differential clearance measuring device

Abstract

The utility model belongs to the technical field of differential assembly auxiliary equipment, and particularly relates to a differential clearance measuring device which comprises a shell, and a rotating bolt, a movable pin shaft and a plurality of locking blocks are arranged in the shell. The upper part of the shell is an operation section, the lower part of the shell is an assembly section, and the operation section is communicated with the interior of the assembly section; the rotating bolt is rotationally mounted at the upper part of the operation section of the shell; the movable pin shaft is movably arranged in the operation section of the shell, and the movable pin shaft is arranged below the rotating bolt; the locking block is movably arranged in the assembling section of the shell, and the locking block extends out of the side face of the shell under extrusion of the rotating bolt and the movable pin shaft. The differential clearance measuring device can measure the differential clearance, and is simple in structure and convenient and fast to operate.

Description

Technical Field

[0001] The utility model relates to a differential clearance measuring device, belonging to the technical field of differential assembly auxiliary equipment. Background Art

[0002] The differential is a core component in the tractor drive axle and loader drive axle. The differential clearance, that is, the clearance parameter between the differential gear and the differential housing, is a key parameter of the core component. Therefore, the size of the differential clearance is crucial. If the differential clearance is too large, there will be abnormal conditions such as loud noise in the drive axle and abnormal noise when shifting gears; if the differential clearance is too small, it may cause the gear to heat up and even sinter.

[0003] Differential structure Figure 6 Due to the closed structure of the differential 6, the clearance between the gear 601 and the housing 602 of the differential 6 cannot be directly measured during the assembly process. Since the measurement of the differential clearance is very difficult, it has become a bottleneck process in the assembly process.

[0004] Therefore, a differential clearance measuring device that is simple, fast and convenient to operate is needed. Utility Model Content

[0005] The utility model aims at the defects of the prior art and provides a differential clearance measuring device.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] A differential clearance measuring device comprises a shell, wherein a rotating bolt, a movable pin and a plurality of locking blocks are arranged inside the shell; the upper part of the shell is an operating section, the lower part of the shell is an assembly section, and the operating section is communicated with the interior of the assembly section; the rotating bolt is rotatably mounted on the upper part of the operating section of the shell; the movable pin is movably arranged inside the operating section of the shell, and the movable pin is arranged below the rotating bolt; the locking block is movably arranged in the assembly section of the shell, and the locking block extends out of the side of the shell under the squeezing of the rotating bolt and the movable pin.

[0008] The beneficial effects of the utility model are as follows: the utility model places the assembly section of the housing in the gear of the differential, and then drives the movable pin shaft to squeeze the locking block outward by rotating the screw, so that the locking block extends out of the housing and contacts the inner wall of the gear of the differential, and then drives the differential gear to move up and down by moving the housing, so as to realize the measurement of the differential clearance; the utility model has a simple structure and is convenient and fast to operate.

[0009] On the basis of the above technical solution, the present invention can also make the following improvements:

[0010] Furthermore, the movable pin is arranged perpendicularly to the locking block.

[0011] Furthermore, the bottom end of the movable pin is a spherical end surface; and the end of the locking block close to the movable pin is an inner spherical surface.

[0012] The beneficial effect of adopting the above-mentioned further technical solution is that when the rotating bolt rotates downward to drive the movable pin shaft to squeeze the locking block, since the ends of the locking block and the movable pin shaft that contact are both spherical, and the movable pin shaft and the locking block are arranged vertically, the movable pin shaft can evenly push each locking block to move outward.

[0013] Furthermore, one end of the locking block away from the movable pin is an outer arc surface, the curvature of the outer arc surface is adapted to the curvature of the side surface of the shell, and the length of the locking block is smaller than the radius of the assembly section.

[0014] The beneficial effect of adopting the above further technical solution is that the outer arc surface of the locking block is adapted to the curvature of the side surface of the shell. When the assembly section of the shell is placed into the gear of the differential, the curvature of the locking block and the outer surface of the shell are consistent, thereby preventing the locking block from affecting the movement of the shell.

[0015] Furthermore, a vertical long installation hole is provided in the operating section of the housing, an external thread is provided on the rotating bolt, and an internal thread matching the external thread of the rotating bolt is provided on the upper inner wall of the long installation hole.

[0016] The beneficial effect of adopting the above further technical solution is: by threading the rotating bolt and the mounting long hole, the rotating bolt is prevented from falling on the mounting long hole.

[0017] Furthermore, the movable pin is movably installed in the installation long hole.

[0018] Furthermore, a plurality of locking block mounting holes are provided in the assembly section of the shell, the locking block is loosely matched with the locking block mounting holes, the locking block mounting holes pass through the side of the shell, and the locking block mounting holes are all connected with the mounting long holes inside the shell.

[0019] The beneficial effect of adopting the above further technical solution is that the locking block and the locking block installation hole are clearance-matched, which facilitates the movement of the locking block in the locking block installation hole.

[0020] Furthermore, a mounting groove 1 is provided on the outer arc surface of the locking block, and an elastic O-ring is installed in the mounting groove 1.

[0021] The beneficial effect of adopting the above-mentioned further technical solution is that when the locking block extends outward and is locked in the gear of the differential, the O-ring can be used as a gasket between the locking block and the inner wall of the gear, thereby improving the locking effect of the locking block; after the gap measurement is completed, the rotating bolt is rotated in the opposite direction to reset, and under the action of the elastic force of the O-ring, the locking block automatically retracts into the locking block mounting hole.

[0022] Furthermore, a second mounting groove is provided on the outer side surface of the housing corresponding to the O-ring.

[0023] The beneficial effect of adopting the above further technical solution is: improving the installation effect of the O-ring.

[0024] Furthermore, it also includes a magnetometer, which is used to measure the movement of the shell.

[0025] The beneficial effect of adopting the above further technical solution is that after the locking block locks the differential gear, the housing is moved up and down, and the movement of the housing is measured by a magnetic measuring meter, thereby obtaining the result of the differential clearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a schematic diagram of the structure of the housing of the utility model;

[0028] Figure 3 It is a schematic diagram of the working principle of the utility model;

[0029] Figure 4 It is a structural schematic diagram of the movable pin shaft of the utility model;

[0030] Figure 5 It is a structural schematic diagram of the locking block of the utility model;

[0031] Figure 6 It is a structural diagram of the differential.

[0032] The reference numerals are recorded as follows: 1. outer shell; 101. operating section; 102. assembly section; 103. mounting long hole; 104. locking block mounting hole; 105. mounting groove two; 2. rotating bolt; 3. moving pin; 301. spherical end surface; 4. locking block; 401. inner spherical surface; 402. mounting groove one; 5. O-ring; 6. differential; 601. gear; 602. housing; 603. gasket; 7. magnetic measuring meter. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] See also Figure 1-5 , a differential clearance measuring device, comprising a housing 1, wherein a rotating bolt 2, a movable pin 3 and a plurality of locking blocks 4 are arranged in the housing 1; the upper portion of the housing 1 is an operating section 101, and the lower portion of the housing 1 is an assembly section 102, the outer diameter of the assembly section 102 is adapted to the inner diameter of the inner ring of the gear 601 of the differential 6 to be measured, and the operating section 101 is communicated with the interior of the assembly section 102; the rotating bolt 2 is rotatably mounted on the upper portion of the operating section 101 of the housing 1, and the head of the rotating bolt 2 is arranged outside the operating section 101, so as to facilitate the operation and rotation of the rotating bolt 2; the movable pin 3 is movably arranged inside the operating section 101 of the housing 1, and the movable pin 3 is arranged below the rotating bolt 2; the locking block 4 is movably arranged in the assembly section 102 of the housing 1, and the locking block 4 extends out of the side of the housing 1 under the squeezing of the rotating bolt 2 and the movable pin 3.

[0035] The movable pin shaft 3 and the locking block 4 are arranged perpendicularly.

[0036] The bottom end of the movable pin shaft 3 is a spherical end surface 301 ; the end of the locking block 4 close to the movable pin shaft 3 is an inner spherical surface 401 .

[0037] One end of the locking block 4 away from the movable pin 3 is an outer arc surface, the curvature of the outer arc surface is adapted to the curvature of the side surface of the housing 1 , and the length of the locking block 4 is smaller than the radius of the assembly section 102 .

[0038] See also Figure 2 A vertical long installation hole 103 is provided in the operating section 101 of the housing 1, an external thread is provided on the rotating bolt 2, and an internal thread matching the external thread of the rotating bolt 2 is provided on the upper inner wall of the long installation hole 103.

[0039] The movable pin shaft 3 is movably installed in the installation long hole 103 .

[0040] A plurality of locking block mounting holes 104 are provided in the assembly section 102 of the housing 1, the locking block 4 is loosely matched with the locking block mounting holes 104, the locking block mounting holes 104 pass through the side of the housing 1, and the locking block mounting holes 104 are all connected with the mounting long holes 103 inside the housing 1. As a preferred embodiment of the present invention, there are four locking blocks 4, and correspondingly, there are four locking block mounting holes 104, and the four locking block mounting holes 104 are connected and perpendicular to each other to form a cross shape.

[0041] The outer arc surface of the locking block 4 is provided with a mounting groove 402 , and an elastic O-ring 5 is installed in the mounting groove 402 .

[0042] A second mounting groove 105 is formed on the outer side of the housing 1 corresponding to the O-ring 5 .

[0043] It also includes a magnetometer 7, which is used to measure the movement of the housing 1.

[0044] See also Figure 3 The working state and working principle of the differential clearance measuring device of the utility model are as follows:

[0045] Place the differential clearance measuring device on the differential 6 assembly, so that the assembly section 102 of the housing 1 extends into the inner circle of the gear 601 of the differential 6, rotate the bolt 2 clockwise to push the movable pin 3 to move downward, and the movable pin 3 squeezes the four locking blocks 4 to move outward, so that the outer arc surfaces of the four locking blocks 4 are in close contact with the inner holes of the gear 601 of the differential 6, hold the housing 1 by hand or by a manipulator, and move the measuring device up and down, drive the gear 601 of the differential 6 to move up and down through the four locking blocks 4, measure the height of the housing 1 before and after the up and down movement through the magnetic measuring table 7, calculate the height difference before and after the up and down movement of the housing 1 to obtain the movement amount of the housing 1, which is the gap between the differential 6 gear 601 and the differential 6 housing 602, select and calculate the corresponding gasket 603 according to the gap between the differential 6 gear 601 and the differential 6 housing 602, and ensure the gap requirement. For the convenience of calculation, the reading measured by the magnetic measuring meter 7 before the housing 1 moves can be reset to zero, and the reading measured by the magnetic measuring meter 7 after the housing 1 moves is the movement amount of the housing 1, that is, the dial reading is the gap of the differential 6.

[0046] Specific calculation formula: Thickness of gasket 603 (L) = dial reading (H) - standard clearance (h). For example: the standard clearance h is required to be 0.2mm-0.25mm, and the dial reading H of the mobile housing 1 is 0.8mm, then the thickness of gasket 603 is 0.8-(0.2 or 0.25) equals 0.6-0.55mm, which means that the thickness of gasket 603 should be selected, that is, a gasket 603 with a thickness of 0.55-0.6mm is added between the differential 6 gear 601 and the housing 602 to ensure that the clearance of the differential 6 gear 601 is within the standard range of 0.2-0.25mm.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A differential clearance measuring device, characterized in that: The invention comprises a shell (1), wherein a rotating bolt (2), a movable pin shaft (3) and a plurality of locking blocks (4) are arranged inside the shell (1); the upper part of the shell (1) is an operating section (101), the lower part of the shell (1) is an assembly section (102), and the operating section (101) is connected to the inside of the assembly section (102); the rotating bolt (2) is rotatably mounted on the upper part of the operating section (101) of the shell (1); the movable pin shaft (3) is movably arranged inside the operating section (101) of the shell (1), and the movable pin shaft (3) is arranged below the rotating bolt (2); the locking block (4) is movably arranged inside the assembly section (102) of the shell (1), and the locking block (4) extends out of the side of the shell (1) under the pressure of the rotating bolt (2) and the movable pin shaft (3).

2. The differential clearance measuring device according to claim 1, characterized in that: The movable pin shaft (3) and the locking block (4) are arranged perpendicularly.

3. The differential clearance measuring device according to claim 2, characterized in that: The bottom end of the movable pin shaft (3) is a spherical end surface (301); and the end of the locking block (4) close to the movable pin shaft (3) is an inner spherical surface (401).

4. The differential clearance measuring device according to claim 3, characterized in that: The end of the locking block (4) away from the movable pin shaft (3) is an outer arc surface, the curvature of the outer arc surface is adapted to the curvature of the side surface of the housing (1), and the length of the locking block (4) is smaller than the radius of the assembly section (102).

5. The differential clearance measuring device according to claim 4, characterized in that: A vertical long installation hole (103) is provided in the operating section (101) of the housing (1), an external thread is provided on the rotating bolt (2), and an internal thread matching the external thread of the rotating bolt (2) is provided on the upper inner wall of the long installation hole (103).

6. The differential clearance measuring device according to claim 5, characterized in that: The movable pin shaft (3) is movably mounted in the mounting long hole (103).

7. The differential clearance measuring device according to claim 6, characterized in that: A plurality of locking block mounting holes (104) are provided in the assembly section (102) of the housing (1); the locking block (4) is clearance-matched with the locking block mounting holes (104); the locking block mounting holes (104) pass through the side surfaces of the housing (1); and the locking block mounting holes (104) are all connected to the mounting long holes (103) inside the housing (1).

8. The differential clearance measuring device according to claim 7, characterized in that: The outer arc surface of the locking block (4) is provided with a mounting groove (402), and an elastic O-ring (5) is installed in the mounting groove (402).

9. The differential clearance measuring device according to claim 8, characterized in that: A second mounting groove (105) is provided on the outer side surface of the housing (1) corresponding to the O-ring (5).

10. The differential clearance measuring device according to claim 1, characterized in that: It also comprises a magnetometer (7), wherein the magnetometer (7) is used to measure the movement amount of the housing (1).

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