CN204772238U - Two jackshaft derailleurs of thin high tooth are to tooth anchor clamps - Google Patents

Abstract

The utility model discloses a gear pairing fixture for a double countershaft transmission with fine and high teeth, which comprises a positioning plate (1), and a two-axis positioning hole (101) for assisting the installation of two shafts is opened at the center of the positioning plate (1). Both sides of the shaft positioning hole (101) are respectively provided with a through hole, and each through hole is provided with a positioning sleeve (2), and the center of each positioning sleeve (2) is provided with a hole for auxiliary installation of the intermediate shaft. Intermediate shaft positioning hole (201). In the utility model, the design of the positioning sleeve and the bearing seat of the intermediate shaft and the positioning plate are clearance fit. After the teeth are aligned, use the positioning hole of the intermediate shaft on the positioning sleeve to fix the left and right intermediate shaft assemblies. If the positioning sleeve cannot be smoothly inserted into the intermediate shaft bearing The seat has a problem with the teeth, so as to prevent the transmission with the wrong teeth from continuing to be assembled, so as to achieve the purpose of error prevention and improve the pass rate of the first packing.

Description

A jig for aligning teeth of double countershaft transmission with fine and high teeth

Technical field:

The utility model relates to a clamp for a transmission, in particular to a gear pairing clamp for a double intermediate shaft transmission with fine and high teeth.

Background technique:

In the domestic gear industry, there are more and more fine-tooth tooth designs for transmissions. Most of the double-countershaft transmissions of a company use coarse-tooth designs except for the 6DS series. Coarse-tooth designed transmissions are easy to put into the box and aligned, and it is not easy to deviate after the alignment is completed. If the alignment deviates, the front end bearings of the left and right intermediate shafts will not be able to be assembled, so the alignment error can be found in time. The two-shaft assembly of the transmission with fine and high teeth of the full synchronizer is a high and low undulating sawtooth structure. It is difficult to enter the box. Assembly can be done without being detected.

The 6DS series transmission is designed with thin and high teeth. The transmission gear at the front end of the intermediate shaft and the first shaft gear have a small modulus, so the pitch between the teeth is smaller. When the shaft rear bearing vibrates, it is easy to make the teeth deviate and it is not easy to find, resulting in wrong teeth alignment and rework. The transmission gear at the front end of the intermediate shaft of the 6DS series transmission and the first shaft gear have a small modulus, so the tooth spacing is smaller. Mistakes are prone to occur during the alignment process and the alignment marks are wrong, resulting in misalignment.

Utility model content:

The purpose of the utility model is to provide a pairing fixture for double countershaft transmissions with thin and high teeth aiming at the deficiencies of the prior art.

In order to achieve the above object, the utility model adopts the following technical solutions to achieve:

A pairing jig for a fine-toothed double countershaft transmission, comprising a positioning plate, a two-axis positioning hole for assisting the installation of two shafts is opened at the center of the positioning plate, and a through hole is opened on each side of the two-axis positioning hole. Each of the through holes is fitted with a positioning sleeve, and the center of each positioning sleeve is provided with an intermediate shaft positioning hole for auxiliary installation of the intermediate shaft.

The further improvement of the utility model is that: the two-axis positioning hole is a stepped hole, and the diameter of the stepped hole facing upward is smaller than the diameter of the downward facing hole.

The further improvement of the utility model lies in that: the edges and corners of the stepped holes are provided with chamfers.

The further improvement of the utility model is that: the positioning hole of the intermediate shaft is a round hole, and the end of the round hole facing downwards for the usage method is provided with a chamfer.

The further improvement of the utility model is that: a plurality of lightening holes for reducing the weight of the fixture are provided in the circumferential direction of the positioning hole of the intermediate shaft on each positioning sleeve.

The further improvement of the utility model is that: both ends of the positioning plate are provided with handles.

The further improvement of the utility model lies in that the handle is fixed on both ends of the positioning plate by hexagon socket bolts.

The further improvement of the utility model is that: positioning pin holes are opened on the center of the positioning plate near the two ends of the handle.

The further improvement of the utility model is that: a top screw hole and a mounting hole for mounting with the transmission case are provided near the positioning pin hole.

Compared with the prior art, the utility model has the following advantages:

In the utility model, the design of the positioning sleeve and the bearing seat of the intermediate shaft and the positioning plate are clearance fit. After the teeth are aligned, use the positioning hole of the intermediate shaft on the positioning sleeve to fix the left and right intermediate shaft assemblies. If the positioning sleeve cannot be smoothly inserted into the intermediate shaft bearing The seat has a problem with the teeth, so as to prevent the transmission with the wrong teeth from continuing to be assembled, so as to achieve the purpose of error prevention and improve the pass rate of the first packing.

Description of drawings:

Fig. 1 is a three-dimensional view of a gear pairing fixture of a double countershaft transmission with thin and high teeth of the present invention.

Fig. 2 is a top view of a pair of teeth clamps for a double countershaft transmission with thin and high teeth of the present invention.

Fig. 3 is a cross-sectional view of a gear pairing fixture of a double countershaft transmission with thin and high teeth of the present invention.

In the figure: 1 is the positioning plate, 101 is the two-axis positioning hole, 102 is the positioning pin hole, 103 is the top screw hole, 104 is the installation hole, 2 is the positioning sleeve, 201 is the intermediate shaft positioning hole, 202 is the weight reduction hole, 3 is a handle, and 4 is an inner hexagon bolt.

Detailed ways:

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Referring to Fig. 1 to Fig. 3, a gear pairing fixture of a double countershaft transmission with thin and high teeth of the present invention includes a positioning plate 1, and the center of the positioning plate 1 is provided with a two-axis positioning hole 101 for auxiliary installation of two shafts. A through hole is opened on both sides of the positioning hole 101, and a positioning sleeve 2 is gap-fitted in each through hole, and an intermediate shaft positioning hole 201 for auxiliary installation of the intermediate shaft is opened at the center of each positioning sleeve 2 .

The two-axis positioning hole 101 is a stepped hole, and the diameter of the stepped hole facing upward is smaller than that facing downward, and the edges and corners of the stepped hole are provided with chamfers.

The intermediate shaft positioning hole 201 is a round hole, and the end of the round hole facing downwards is provided with a chamfer. In addition, each positioning sleeve 2 is provided with a number of holes on the circumference of the intermediate shaft positioning hole 201 to reduce the weight of the fixture. Lightening holes 202 .

Further, both ends of the positioning plate 1 are provided with handles 3 , and the handles 3 are fixed to both ends of the positioning plate 1 by hexagon socket bolts 4 . In addition, a positioning pin hole 102 is opened on the positioning plate 1 close to the center of both ends of the handle 3 , and a top screw hole 103 and a mounting hole 104 for mounting with the transmission case are opened near the positioning pin hole 102 .

In order to further understand the utility model, its using method is described as follows now.

1) Put the two-axis positioning hole 101 of the positioning plate 1 into the two-axis after the two-axis is put into the box, and the positioning pin hole 102 is aligned with the positioning pin on the transmission case, and the two-axis positioning hole 101 on the positioning plate 1 makes the two-axis The position of the assembly is fixed, the posture of the gearbox is changed to the front end facing up, and a shaft assembly is installed;

2) Change the posture to align the teeth in the vertical direction with the front end facing down; after the tooth alignment is completed, insert the positioning sleeve 2 into the rear end of the intermediate shaft, and the intermediate shaft fixing holes 201 on the positioning sleeve 2 fix the left and right intermediate shafts. The tooth alignment is correct, otherwise check whether the tooth alignment is wrong and readjust;

3) Turn the transmission to the horizontal direction, and assemble the front end bearing of the intermediate shaft and the baffle plate of the intermediate shaft. Adjust the transmission to the vertical direction, disassemble the positioning sleeve 2 and the positioning plate 1, and complete the entire gear alignment process.

Taking the 6DS series transmission as an example, the utility model is divided into two main parts, the positioning plate 1 and the positioning sleeve 2. After the two-axis assembly is put into the box, the positioning plate 1 is inserted into the rear end of the two-axis, and is connected with the positioning pin on the transmission case. Cooperate, the two-axis positioning hole 101 on the positioning plate 1 fixes the two-axis assembly at the center position, and the one-axis assembly can be assembled conveniently. This realizes the correct and rapid assembly of the one-axis assembly.

After the first shaft assembly is installed, the intermediate shaft transmission gear and the first shaft gear are aligned. After the teeth are aligned, fix the left and right intermediate shaft assemblies at the center of the bearing hole with the positioning hole 201 on the intermediate shaft of the positioning sleeve 2. At this time, the center of the assembly is The front end bearing of the shaft assembly solves the problem that the front teeth of the transmission are easy to deviate after the teeth are aligned. As long as the teeth are aligned correctly, the problem of alignment deviation will not occur during the assembly process, thereby eliminating the occurrence of alignment after the teeth are aligned correctly. possibility of deviation.

Claims (9)

1. A tooth-aligning fixture for double countershaft transmissions with fine and high teeth, characterized in that: it includes a positioning plate (1), and the center of the positioning plate (1) is provided with a two-axis positioning hole (101) for auxiliary installation of two shafts, Both sides of the two-axis positioning hole (101) are provided with a through hole, each through hole is fitted with a positioning sleeve (2), and the center of each positioning sleeve (2) is provided with a center for auxiliary installation. center shaft locating hole (201) for the shaft. 2. A pairing jig for fine-tooth double countershaft transmission according to claim 1, characterized in that: the two-axis positioning hole (101) is a stepped hole, and the diameter of the stepped hole facing upwards is smaller than that of the used method Downward-facing aperture. 3 . The pairing jig for double countershaft transmissions with thin and high teeth according to claim 2 , wherein chamfers are provided at the edges and corners of the stepped holes. 4 . 4. A pairing jig for double countershaft transmissions with fine and high teeth according to claim 1, characterized in that: the positioning hole (201) of the countershaft is a round hole, and the end of the round hole facing downwards for use is provided with an inverted horn. 5. A pairing jig for double countershaft transmissions with thin and high teeth according to claim 1 or 4, characterized in that: there are several countershaft positioning holes (201) on each positioning sleeve (2) in the circumferential direction. Lightening holes (202) to reduce clamp weight. 6 . The pairing jig for double countershaft transmissions with thin and high teeth according to claim 1 , characterized in that: handles ( 3 ) are provided at both ends of the positioning plate ( 1 ). 7 . The pairing jig for double countershaft transmissions with thin and high teeth according to claim 6 , characterized in that the handle ( 3 ) is fixed to both ends of the positioning plate ( 1 ) by hexagon socket head bolts ( 4 ). 8. A tooth-aligning jig for double countershaft transmissions with thin and high teeth according to claim 6, characterized in that: positioning pin holes (102) are opened on the positioning plate (1) near the centers of both ends of the handle (3) . 9. A tooth-aligning jig for double countershaft transmissions with fine and high teeth according to claim 8, characterized in that: there is a top screw hole (103) near the positioning pin hole (102) and it is used for mounting with the transmission case mounting holes (104).