CN101204798B - Dedicated remover for automobile leaf spring bolts - Google Patents

Abstract

A quick disassembler for leaf spring bolts of an automobile, which is composed of a casing member, a power input mechanism, a three-stage reduction mechanism and a power output mechanism; the casing member includes a small box 11, a large box 12, a movable shoulder 13 and There is a latch 15 on the handle 14 and the movable shoulder 13; the power input mechanism includes a rocker handle 21 and an input shaft 22, and one end of the input shaft 22 is a 1T gear 221; the first-stage reduction mechanism and the third-stage reduction mechanism of the three-stage reduction mechanism adopt The planetary gear train structure with three planetary gears evenly arranged, the second-stage reduction mechanism adopts a fixed shaft gear train structure, which includes planetary gears 31, 32, mandrel shafts 33, 34, 2X frame shaft 35, small bevel gear 36, large bevel gear Gear 37, main shaft 38 and 3X rack shaft 39; power output mechanism includes output shaft 41 and sleeve 42. The invention has the advantages of large input-output torque ratio, compact structure, light weight, high reliability, simple and labor-saving operation, etc., and is convenient for automobile maintenance enterprises and to be carried with vehicles.

Description

Dedicated remover for automobile leaf spring bolts

technical field

The invention relates to a hand tool for maintenance, in particular to a special remover for automobile leaf spring bolts.

Background technique

At present, there are two types of tools for removing and assembling automobile leaf spring bolts known on the market: the first type is a wrench, which applies torque to the nuts of the U-shaped bolts to disassemble and assemble the U-shaped bolts. Very low; the second type is the electric U-shaped bolt remover, which inputs power through the motor, and then applies torque to the U-shaped bolt nut through deceleration and increased force to disassemble and assemble the U-shaped bolt. This type of tool consumes high energy and is large in size , too heavy, high cost, complex maintenance, low reliability, and limited by the operating space.

Contents of the invention

The object of the present invention is to provide a special dismantling device for automobile leaf spring bolts which saves energy and reduces consumption, has a large input-to-output torque ratio, light weight, compact structure and simple operation.

The technical solution of the present invention is: the special disassembler for automobile leaf spring bolts is composed of a casing member, a power input mechanism, a three-stage deceleration mechanism and a power output mechanism; the casing component includes a small box body, a large box body, a movable shoulder and There are teeth on the inner wall of the handle, the small box and the big box, the small box is installed on the side of the big box, the handle and the movable shoulder are installed on the big box; the power input mechanism includes a rocker handle and an input shaft, and the input The shaft is installed in a small box, one end of which is connected to the rocker handle, and the other end is a 1T gear; the first-stage reduction mechanism and the third-stage reduction mechanism of the three-stage reduction mechanism adopt a planetary gear train structure with three planetary gears evenly arranged. The two-stage reduction mechanism adopts a fixed shaft gear train structure; the power output mechanism includes an output shaft and a sleeve, and the sleeve is set on the upper end of the output shaft.

The further technical scheme of the present invention is: the three-stage reduction mechanism includes planetary gear, mandrel, 2X rack shaft, small bevel gear, large bevel gear, main shaft and 3X rack shaft, and the planetary gear is installed on the 2X rack shaft through the mandrel, 2X The frame shaft is installed in the small box. The teeth on the planetary gear mesh with the teeth on the 1T gear and the teeth on the inner wall of the small box. The small bevel gear is installed on the 2X frame shaft, and its axis is perpendicular to the axis of the large bevel gear. The bevel teeth on it mesh with the bevel teeth on the large bevel gear. The large bevel gear is installed in the large box through the main shaft. The front end of the main shaft is a 2T gear. The planetary gear is installed on the 3X rack shaft through the mandrel. Mesh with the teeth on the 2T gear and the teeth on the inner wall of the large box.

A further technical solution of the present invention is: the output shaft and the 3X frame shaft adopt an integral structure.

The further technical scheme of the present invention is: select the spur gear with the modulus of m=2 for the planetary gear, and the bevel gear with the modulus of m=3.25 for the small bevel gear and the large bevel gear.

Due to the above design, compared with the prior art, the present invention has the advantages of energy saving and consumption reduction, large ratio of input and output torque, compact structure, light weight, high reliability, long service life, easy operation, labor saving, special purpose, convenient maintenance, etc. The utility model has the advantages of being convenient for automobile maintenance enterprises and carrying with the vehicle.

The detailed structure of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Accompanying drawing 1 is a structural representation of the present invention;

Accompanying drawing 2 is A-A sectional view of accompanying drawing 1;

Accompanying drawing 3 is the B-B sectional view of accompanying drawing 1;

Accompanying drawing 4 is the C-C sectional view of accompanying drawing 1.

Detailed ways

As shown in the attached figure: the special disassembler for automobile leaf spring bolts is composed of a casing member, a power input mechanism, a three-stage reduction mechanism and a power output mechanism; the casing member is both the casing and the box of the reduction mechanism, which includes a small Body 11, large casing 12, movable shoulder 13 and handle 14, teeth are arranged on the inwall of small casing 11 and large casing 12, and small casing 11 is installed on the side of large casing 12, and its axis and big casing The axis of the body 12 is vertical, and there is a latch 15 on the movable shoulder 13. For the convenience of disassembly and angle conversion, the movable shoulder 13 and the large box 12 are connected by splines, and the handle 14 is installed on the large box 12; power input The mechanism includes a rocker handle 21 and an input shaft 22. The input shaft 22 is installed in the small box 11, one end of which is connected to the rocker handle 21, and the other end is a 1T gear 221. The coaxiality of the components in this mechanism is relatively high, so it can be easily Smooth and efficient power input; the three-stage reduction mechanism includes planetary gears 31, 32, core shafts 33, 34, 2X rack shafts 35, small bevel gears 36, large bevel gears 37, main shaft 38 and 3X rack shafts 39, planetary The gear 31 is installed on the 2X frame shaft 35 through the mandrel 33, and the 2X frame shaft 35 is installed in the small box body 11. The teeth on the planetary gear 31 and the teeth on the 1T gear 221 and the teeth on the small box body 11 inner wall mesh with each other. , the small bevel gear 36 is installed on the 2X frame shaft 35, the bevel teeth on it are located in the large box body 12, and mesh with the bevel teeth on the large bevel gear 37, and the large bevel gear 37 is installed on the large box body through the main shaft 38 12, the front end of the main shaft 38 is a 2T gear 381, and the planetary gear 32 is installed on the 3X frame shaft 39 through the mandrel 34, and the teeth on it mesh with the teeth on the 2T gear 381 and the teeth on the inner wall of the large box 12; The power take-off mechanism includes an output shaft 41 and a sleeve 42, the output shaft 41 and the 3X frame shaft 39 adopt an integral structure, and the sleeve 42 is sleeved on the square head at the upper end of the output shaft 41.

In order to utilize the minimum material and reach the maximum output torque, the planetary gears 31 and 32 are spur gears with a modulus of m=2, and the small bevel gear 36 and the large bevel gear 37 are bevel gears with a modulus of m=3.25.

In order to reduce the load of the planetary gears 31, 32 and the core shafts 33, 34, a structure in which three planetary gears 31, 32 are evenly arranged is adopted, so that the load of a single planetary gear 31, 32 and the core shafts 33, 34 is greatly reduced.

The working principle and using method of the present invention are: put the sleeve 42 of square hole in 1 cun on the square head of output shaft 41 upper end, and sleeve 42 is enclosed within on the nut 6 of U-shaped bolt 5, and movable shoulder 13 Lean against on the hanging pressure plate 7 or other components (the movable shoulder 13 provides the force support point, and the latch 15 on it can easily increase the height of the movable shoulder 13), then hold the handle 14 of the present invention, according to the disassembly needs Evenly rotate the rocker handle 21 in the same direction, and the artificial force (only 30-50NM) is passed through the 1T gear 221 on the input shaft 22, the planetary gear 31, the mandrel 33, the 2X rack shaft 35, and the first small box 11. After the deceleration and boosting of the first-stage planetary gear train, the small bevel gear 36 transmits the torque to the large bevel gear 37 to continue the second-stage deceleration and boosting, and then the torque is transmitted to the 2T gear 381 and the planetary gear 32 at the front end of the main shaft 38 through the main shaft 38. , mandrel 34, 3X frame shaft 39 and the third-stage planetary gear train deceleration boost force that big box body 12 forms, the square head of output shaft 41 upper end drives sleeve 42 to rotate at last, the torsional force of output (up to 1000- 1200NM) on the nut 6 on the U-bolt 5 to achieve the purpose of loosening or tightening the U-bolt 5.

The first-stage deceleration mechanism and the third-stage deceleration mechanism of the three-stage deceleration mechanism of the present invention are planetary gear trains, and the second-stage deceleration mechanism is a fixed-axis gear train, that is, the second-stage deceleration mechanism adopts bevel gear transmission, which not only changes the transmission direction, and the speed is changed, and the height of the whole structure is greatly reduced, and the operation is also convenient and feasible. The tooth surface load, the load of the mandrel and the bevel gear are greatly reduced, the strength is greatly improved, the safety factor tends to be consistent, and the reliability and service life of the present invention are greatly improved; and the reduction mechanism of the three-stage speed change obtains a large reduction ratio ( i=42), so that the input power is greatly amplified, and the input torque of 30-50NM can obtain the output torque of 1000-1200NM. It has the characteristics of light weight, compact structure and large gear ratio.

Claims (4)

1. A special disassembler for automobile leaf spring bolts, which is characterized in that it is composed of a casing member, a power input mechanism, a three-stage deceleration mechanism and a power output mechanism; the casing member includes a small box body, a large box body, and a movable shoulder And the handle, there are teeth on the inner wall of the small box and the big box, the small box is installed on the side of the big box, the handle and the movable shoulder are installed on the big box; the power input mechanism includes a rocker handle and an input shaft, The input shaft is installed in a small box, one end of which is connected to the rocker handle, and the other end is a 1T gear; the first-stage reduction mechanism and the third-stage reduction mechanism of the three-stage reduction mechanism adopt a planetary gear train structure with three planetary gears evenly arranged. The second-stage reduction mechanism adopts a fixed shaft gear train structure; the power output mechanism includes an output shaft and a sleeve, and the sleeve is sleeved on the upper end of the output shaft. 2. The special disassembler for automobile leaf spring bolts according to claim 1, characterized in that the three-stage reduction mechanism includes 2X planetary gears (31), 3X planetary gears (32), mandrels, 2X rack shafts, bevel pinions , large bevel gear, main shaft and 3X rack shaft, 2X planetary gear (31) is installed on the 2X rack shaft (35) through mandrel (33), and 2X rack shaft is installed in the small box, the teeth on the planetary gear and 1T gear The teeth on the top and the teeth on the inner wall of the small box are meshed. The small bevel gear is installed on the 2X rack shaft. The bevel teeth on it mesh with the bevel teeth on the large bevel gear. The large bevel gear is installed in the large box through the main shaft. , the front end of the main shaft is a 2T gear, and the 3X planetary gear (32) is installed on the 3X frame shaft (39) through the mandrel (34), and the teeth on it are meshed with the teeth on the 2T gear and the inner wall of the large box. . 3. The special disassembler for leaf spring bolts according to claim 2, characterized in that the output shaft and the 3X frame shaft adopt an integral structure. 4. according to claim 1 or 2 or 3 described automobile leaf spring bolt special dismantling device, it is characterized in that planetary gear selects the spur gear that modulus is m=2, small bevel gear and large bevel gear select modulus as m =3.25 bevel gear.

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