WO2020082616A1

WO2020082616A1 - Bevel gear transmission clearance elimination apparatus

Info

Publication number: WO2020082616A1
Application number: PCT/CN2019/070748
Authority: WO
Inventors: 高志坚; 王琳; 杨兰; 赵海; 姜海军; 庞雨花; 杨红霞
Original assignee: 常州机电职业技术学院
Priority date: 2018-10-23
Filing date: 2019-01-08
Publication date: 2020-04-30
Also published as: CN109282026A; CN109282026B

Abstract

Disclosed is bevel gear transmission clearance elimination apparatus comprising a first backing ring (4), a second backing ring (5), and a clearance-regulating mechanism, wherein each of the first backing ring (4) and the second backing ring (5) is a sheet-shaped annular rotary body; the first backing ring (4) is provided with a first shaft hole (61); the second backing ring (5) is provided with a second shaft hole (62); the first backing ring (4), the clearance-regulating mechanism, and the second backing ring (5) are sequentially installed on a transmission shaft (1) in a series connection manner; an end face, facing the second backing ring (5), of the first backing ring (4) is provided with a first circular conical surface (71); and two first guide grooves (81) are arranged in the radial direction of the first backing ring (4). The clearance-regulating mechanism is composed of two sliding blocks (9), two screws (10), two supporting feet (11), and two force application rods (12), wherein the two sliding blocks (9) are respectively embedded in the two first guide grooves (81), the screws (10) are screwed into threaded through holes of the sliding blocks (9), each supporting foot (11) is hinged to one end of each screw (10), two ends of each force application rod (12) are respectively connected to the two sliding blocks (9), and the two force application rods (12) are symmetrically arranged on the two sides of the first shaft hole (61). The bevel gear transmission clearance elimination apparatus provided with such a structure has a small axial dimension, a compact structure, and high universality.

Description

Bevel gear transmission gap anti-backlash device

Technical field

The invention relates to the technical field of gear transmission, in particular to a backlash eliminating device capable of eliminating the transmission gap of the intersecting shaft bevel gear transmission pair.

Background technique

Under normal circumstances, there is a transmission gap between the bevel gear and the bevel gear meshing transmission. When the bevel gear transmission pair needs positive and negative rotation, a certain amount of empty return will be generated to reduce the transmission accuracy. Therefore, in a device that requires precise transmission, an anti-backlash device that can eliminate the bevel gear engagement transmission gap must be used in order to eliminate the empty back volume. The patent with application number CN201510117508.4 discloses an intersecting shaft bevel gear transmission clearance elimination mechanism, and its technical characteristics are: including the transmission shaft, flat key, driven bevel gear, gland, screw, butterfly spring, spline shaft, gear Rings, circlips, torsion springs, compound nuts, adjusting pads, driving bevel gears. The driven bevel gear is fixedly connected to the transmission shaft through a flat key, a gland, and a screw. The driving bevel gear is fitted on the spline shaft through a spline and can move axially. The small end of the driving bevel gear passes through Disc spring, gland, screw elastic limit, the large end spline shaft of the active bevel gear is axially connected with a shim and a compound nut, and the retaining ring is limited on the spline shaft by a flat key and a snap spring , One end of the torsion spring is snapped into the end face of the retaining ring, and the other end is snapped into the end face of the compound nut, the compound nut maintains the rotational torsion force under the elastic force of the torsion spring, and the rotation of the compound nut will be axial Pushing the adjustment pad and the active bevel gear to move forward, the clearance of the bevel gear transmission is eliminated, and the acting force of the disc spring is smaller than the axial acting force of the torsion spring on the compound nut. The shortcomings of this clearance elimination mechanism for intersecting shaft bevel gears are: ① The adjustment pad, compound nut, torsion spring, retaining ring, and circlip that constitute the clearance elimination mechanism are installed on the spline shaft in a series structure, resulting in intersecting shaft cones The axial dimension of the gear transmission clearance elimination mechanism is large, and the structure is not compact; ②The internal thread of the compound nut must be matched according to the diameter of the spline shaft, so the bevel gear transmission clearance elimination mechanism is not universal.

Summary of the invention

The purpose of the present invention is to provide a bevel gear transmission clearance anti-backlash device that can eliminate the intersecting shaft bevel gear transmission auxiliary transmission gap. This bevel gear transmission clearance anti-backlash device has a small axial size, a compact structure, and has universality. An additional structure needs to be provided on the original intersecting shaft bevel gear transmission structure, and the end surface of the shaft hole mounted on the back cone side of the bevel gear can be used.

In order to achieve the above objective, the technical solution adopted by the bevel gear gap clearance device of the present invention is as follows.

A bevel gear transmission clearance anti-backlash device, the bevel gear transmission clearance anti-backlash device and the bevel gear are connected in series on a transmission shaft, and the bevel gear transmission clearance anti-backlash device is located on the end face of the shaft hole on the back cone side of the bevel gear and the transmission Between the shaft shoulders, the bevel gear transmission clearance anti-backlash device includes a first gasket ring, a second gasket ring and a gap adjustment mechanism.

The first backing ring and the second backing ring are both sheet-shaped ring-shaped rotating bodies. The first backing ring is provided with a first shaft hole coaxial with the first backing ring and suitable for being mounted on the transmission shaft. The second backing ring is provided with a second shaft hole coaxial with the second backing ring and suitable for being mounted on the transmission shaft. The clearance adjusting mechanism is sandwiched between the first backing ring and the second backing ring. The ring, the clearance adjustment mechanism and the second backing ring are sequentially connected in series on the transmission shaft and are located between the end face of the shaft hole on the back cone side of the bevel gear and the shaft shoulder of the transmission shaft.

A first conical surface coaxial with the first shaft hole is provided on the end surface of the first backing ring facing the second backing ring, and two first guide grooves are provided along the radial direction of the first backing ring; The first conical surface of a gasket ring protrudes toward the direction of the second gasket ring, and the two first guide grooves of the first gasket ring are symmetrically disposed on both sides of the first shaft hole.

The gap adjustment mechanism is composed of two sliders, two screws, two legs and two force applying rods, and the two sliders are respectively embedded in the first guides on both sides of the first shaft hole of the first gasket ring In the groove, and the slider can slide along the first guide groove, a threaded through hole is opened on the slider in the sliding direction of the slider, the screw is provided with an external thread, the screw is screwed into the threaded through hole of the slider, the screw An end close to the first shaft hole is hinged with a foot suitable for abutting the drive shaft. The foot can rotate relative to the screw. The foot is in a figure eight shape and is symmetrical with respect to the axis of rotation of the foot. The hole for applying the force bar is C-shaped, the force bar is made of elastic material and can be elastically deformed, and the two ends of the force bar are respectively connected to the corresponding holes of the two sliders. The two forcing rods connected to the slider are symmetrically arranged on both sides of the first shaft hole.

Further, a second conical surface coaxial with the second shaft hole is provided on the end surface of the second backing ring facing the first backing ring, and two are provided along the radial direction of the second backing ring A second guide groove, the second conical surface of the second gasket ring protrudes in the direction of the first gasket ring, the two second guide grooves of the second gasket ring are symmetrically arranged on both sides of the second shaft hole, the second gasket The two second guide grooves of the ring are respectively aligned with the two first guide grooves of the first backing ring, and the second guide groove and the first guide groove are co-inlaid with one of the sliders and the slider can simultaneously follow the second guide The groove slides with the first guide groove.

Further, the bevel gear transmission gap clearance device is further provided with a pin and a coil spring, the pin is composed of a nail body and a large head provided at one end of the nail body, and the first gasket ring is on the outer cylindrical surface A small hole with an axis parallel to the axis of the first shaft hole is opened between the first conical surface, and the diameter of the small hole is slightly larger than the diameter of the pin body of the pin. The number of small holes is two and is symmetrically arranged in the first On both sides of the conical surface, pin holes suitable for fixing pins are opened at positions corresponding to the small holes of the first ring in the second gasket ring, and the axis of the pin hole is parallel to the axis of the second shaft hole , The number of pin holes is two, the coil spring is a thrust spring, the coil spring is sleeved on the nail body of the pin, the nail body with the pin of the coil spring is inserted through the small hole of the first gasket ring, and then inserted and fixed In the pin hole of the second gasket ring, one end of the coil spring bears against the large end of the pin, and the other end of the coil spring bears against the first gasket ring and applies a pushing force to the first gasket ring toward the second gasket ring.

Further, the first gasket ring also has a number of counterbore holes that are equal to the number of the small holes and coaxial with the small holes, and the opening of the counterbore hole is located on the back of the first gasket ring away from the second On the end surface of the backing ring, the diameter of the counterbore is larger than the radial size of the large end of the pin to accommodate the large end of the pin. The nail body of the pin sleeved with the coil spring passes through the counterbore and the first backing ring in turn The small hole is inserted into and fixed in the pin hole of the second gasket ring. One end of the coil spring bears against the big end of the pin, and the other end of the coil spring bears against the shoulder of the counterbore of the first gasket ring.

The bevel gear transmission gap clearance device of the present invention has the following advantages:

①Small axial size, compact structure and strong versatility;

② After adding pins, helical springs and other structures, the invention can be assembled from separate parts into a single piece, which is convenient for transportation, sales and installation, and is also beneficial to adjust the transmission gap of the bevel gear transmission pair;

③ After adding a counterbore on the first backing ring, the big end of the pin can be hidden in the counterbore, which makes the axial size of the present invention smaller and the shape more concise.

④ It can automatically eliminate the meshing transmission gap regenerated by a pair of bevel gears due to wear.

BRIEF DESCRIPTION

The following is a brief description of the content expressed in the drawings of this specification and the marks in the drawings:

Figure 1 shows a bevel gear transmission clearance relief device that is connected in series with a bevel gear on a transmission shaft and is located on the back bevel side of the bevel gear between the end face of the shaft hole and the shoulder of the transmission shaft;

2 is a cross-sectional view taken along line AA of FIG. 1, showing the structure of the first backing ring of the bevel gear transmission clearance anti-backlash device, and also showing the gap adjustment mechanism of the bevel gear transmission backlash relief device and the first backing ring. Assembly relationship

Figure 3 shows the structure of a bevel gear transmission gap anti-backlash device assembled into an independent whole piece, and Figure 3 is a front view;

4 is a left side view of FIG. 3, showing the structure of the whole bevel gear transmission clearance relief device;

5 is a schematic structural view of a gap adjustment mechanism of a gap clearance device of a bevel gear transmission;

6 is a left side view of FIG. 5 showing the structure of the clearance adjustment mechanism;

7 is a schematic structural view of a first backing ring of a bevel gear transmission clearance relief device;

8 is a cross-sectional view taken along the line B-B in FIG. 3, showing the cross-sectional structure of the entire bevel gear transmission clearance relief device. For the sake of concise expression, the legs are not shown in the figure;

9 is a CC cross-sectional view of FIG. 4, showing the assembly relationship between the gap adjustment mechanism and the first backing ring, and also shows the bevel gear transmission clearance anti-backlash device in a non-use state (ie, the force bar is not in force In the free state of), the two forcing rods are located outside the first conical surface of the first backing ring;

10 shows that the first backing ring is provided with a first conical surface and a first guide groove, the second backing ring is provided with a second conical surface and a second guide groove, the first conical surface of the first backing ring and the first guide The groove is mirror-symmetrical to the second conical surface of the second backing ring and the second guide groove. The first guide groove of the first backing ring and the second guide groove of the second backing ring are inlaid with a slider, and the middle part of the force applying rod Move along the first cone surface and the second cone surface to the heights of the first cone surface and the second cone surface, respectively;

11 is a schematic diagram of the structure of the second backing ring of the bevel gear transmission gap clearance device.

The symbols in the drawings are: transmission shaft 1, shoulder 2, bevel gear 3, first backing ring 4, second backing ring 5, first shaft hole 61, second shaft hole 62, first conical surface 71, first Two conical surfaces 72, the first guide groove 81, the second guide groove 82, the slider 9, the screw 10, the leg 11, the force bar 12, the meshing bevel gear 13, the pin 14, the coil spring 15, the small hole 16, the pin hole 17, counterbore 18, hole shoulder 19.

detailed description

To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all the embodiments. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Please refer to FIG. 1 and FIG. 2, a bevel gear transmission clearance anti-backlash device, the bevel gear transmission clearance anti-backlash device and the bevel gear 3 are connected in series on the transmission shaft 1, and the bevel gear transmission clearance anti-backlash device is located in the cone Between the end face of the shaft hole on the back cone side of the gear 3 and the shoulder 2 of the transmission shaft 1, the bevel gear transmission gap anti-backlash device includes a first gasket ring 4, a second gasket ring 5 and a gap adjustment mechanism.

Please refer to FIG. 1, FIG. 2, FIG. 5, and FIG. 6, the first gasket ring 4 and the second gasket ring 5 are both sheet-shaped annular revolving bodies, and the first gasket ring 4 is provided with the first gasket ring 4 The coaxial line is suitable for being installed in the first shaft hole 61 of the transmission shaft 1, and the second backing ring 5 is provided with a second shaft hole which is coaxial with the second backing ring 5 and suitable for being installed in the transmission shaft 1 62, the gap adjusting mechanism is sandwiched between the first backing ring 4 and the second backing ring 5, the first backing ring 4, the gap adjusting mechanism, and the second backing ring 5 are sequentially connected in series on the transmission shaft 1 and are located Between the end surface of the shaft hole on the back cone side of the bevel gear 3 and the shoulder 2 of the transmission shaft 1.

Please refer to FIGS. 1 and 7. On the end surface of the first gasket ring 4 facing the second gasket ring 5, a first conical surface 71 coaxial with the first shaft hole 61 and along the first gasket ring 4 are provided. There are two first guide grooves 81 in the radial direction. In other words, the first gasket ring 4 is machined with a first conical surface 71 coaxial with the first shaft hole 61, and there are two first gasket rings 4 on the first gasket ring 4 along the radial direction of the first gasket ring 4 A guide groove 81, the first conical surface 71 and the first guide groove 81 are both disposed on the end surface of the first gasket ring 4 facing the second gasket ring 5. The first conical surface 71 of the first backing ring 4 projects toward the second backing ring 5 (that is, the outer side of the first conical surface 71 is lower than the end surface of the first backing ring 4 facing the second backing ring 5 The first conical surface 71 is higher near the first shaft hole 61), and the two first guide grooves 81 of the first gasket ring 4 are symmetrically disposed on both sides of the first shaft hole 61.

Please refer to FIG. 2, FIG. 5 and FIG. 6, the gap adjustment mechanism is composed of two sliders 9, two screws 10, two feet 11 and two force applying bars 12. The two sliders 9 are respectively embedded in the first guide grooves 81 on both sides of the first shaft hole 61 of the first backing ring 4, and the slider 9 can slide along the first guide grooves 81 on the upper side of the slider 9 A threaded through hole is opened in the sliding direction of the slider 9, the screw 10 is provided with an external thread, and the screw 10 is screwed into the threaded through hole of the slider 9, and an end of the screw 10 near the first shaft hole 61 is hinged to be adapted to bear The supporting leg 11 of the transmission shaft 1 can rotate relative to the screw 10. The supporting leg 11 is in a figure eight shape and is symmetrical with respect to the rotating axis of the supporting leg 11. The slider 9 is also provided with a hole suitable for the access of the forcing rod 12, the forcing rod 12 is C-shaped, the forcing rod 12 is made of elastic material (such as spring steel) and can be elastically deformed by bending and bending Two ends of the forcing rod 12 are respectively inserted into corresponding holes of the two sliders 9, and the two forcing rods 12 connected to the slider 9 are symmetrically arranged on both sides of the first shaft hole 61.

Working principle of the clearance clearance device of the bevel gear transmission: please refer to FIG. 1, the fit between the shaft hole of the bevel gear 3 and the transmission shaft 1 has an appropriate clearance, so that the bevel gear 3 can be along the shaft of the transmission shaft 1 Slide towards. Before the bevel gear 3 is installed on the transmission shaft 1, the bevel gear transmission clearance anti-backlash device is first installed on the transmission shaft 1 and is close to the shoulder 2 of the transmission shaft 1, and then the bevel gear 3 is installed on the transmission shaft 1 And close to the bevel gear transmission gap anti-backlash device, thereby completing the installation of the intersecting shaft bevel gear transmission pair. At this time, the first backing ring 4 is in contact with the second backing ring 5 without a gap (see FIGS. 4 and 8), and the two force applying rods 12 are both located on the first conical surface 71 of the first backing ring 4 Outside (see Figures 8 and 9), there is a gap between the gear teeth of the bevel gear 3 and the gear teeth of the bevel gear 13. Referring to FIG. 2, the two screw rods 10 are rotated uniformly, so that the legs 11 hinged to the screw rod 10 abut against the cylindrical surface of the transmission shaft 1, and the slider 9 moves away from the transmission shaft along the first guide groove 81 Slide in the direction of 1, so that the distance between the two sliders 9 is widened, so that the two C-shaped force bars 12 are gradually straightened, and the two force bars 12 generate elastic force. Under the action of, the middle parts of the two forcing rods 12 respectively move from the outside of the first conical surface 71 (see FIG. 9) to the first shaft hole 61 (see for FIG. 2), that is, the two forcing rods 12 The middle part moves along the first conical surface 71 from the lower part of the first conical surface 71 (see FIG. 8) to the upper part of the first conical surface 71 (see FIG. 10), the middle part of the two forcing rods 12 The first conical surface 71 of the first gasket ring 4 and the end surface of the second gasket ring 5 facing the first gasket ring 4 separate the first gasket ring 4 from the second gasket ring 5 to make the first gasket ring 4 and a gap between the second backing ring 5 (see FIG. 10). The farther the distance between the two sliders 9 is, the more straight the two C-shaped force bars 12 are pulled, and the middle parts of the two force bars 12 move along the first conical surface 71 to In the high position, the more the first gasket ring 4 and the second gasket ring 5 are separated, the greater the gap between the first gasket ring 4 and the second gasket ring 5. Please refer to FIG. 1, the separation movement of the first gasket ring 4 and the second gasket ring 5 will push the bevel gear 3 to move in the direction of the meshing bevel gear 13 along the axial direction of the transmission shaft 1, so that the gear teeth of the bevel gear 3 and the meshing bevel gear The gear teeth of 13 are close to each other, and finally the mesh transmission gap between the bevel gear 3 and the meshing bevel gear 13 is eliminated.

Beneficial effect of the clearance clearance device of the bevel gear transmission: please refer to FIG. 1 and FIG. 2, the clearance clearance device of the bevel gear transmission is installed on the transmission shaft 1, and its whole structure is a first gasket ring 4 and a second gasket ring The gap adjustment mechanism is sandwiched between 5. Because the first backing ring 4 and the second backing ring 5 are both sheet-shaped, the axial dimension is small, and because of the two sliders 9, two screws 10, two legs 11, and two force-bearing components that make up the gap adjustment mechanism The rods 12 are all distributed in the radial plane of the drive shaft 1 (see FIG. 2), the diameters of the force applying rod 12 and the screw rod 10 are small (see FIG. 6), and the slider 9 and the leg 11 are located on the drive shaft 1 The axial dimension of is slightly larger, but the slider 9 is embedded in the first guide groove 81 of the first backing ring 4 and the leg 11 is also hidden in the first guide groove 81 (see FIGS. 2 and 7), so the cone The gear drive clearance anti-backlash device has a small axial size and a compact structure.

Please refer to Figure 1. From the perspective of the structure, installation method and working principle of the bevel gear transmission clearance anti-backlash device, the bevel gear transmission clearance anti-backlash device does not require an additional structure on the original intersecting shaft bevel gear transmission structure. It can be used in series with the bevel gear 3 on the drive shaft 1 and located between the end face of the shaft hole on the back cone side of the bevel gear 3 and the shoulder 2 of the drive shaft 1, so the bevel gear transmission gap anti-backlash device is versatile . In addition, please refer to FIG. 1 and FIG. 2, the diameters of the first shaft hole 61 and the second shaft hole 62 need not form a tolerance match with the diameter of the journal of the bevel gear transmission clearance clearance device of the transmission shaft 1, the first The basic dimensions of the shaft hole 61 and the second shaft hole 62 may be slightly larger than the basic size of the journal of the transmission shaft 1, and therefore, the versatility of the bevel gear transmission clearance relief device is further expanded.

Referring to FIG. 2, the force applying rod 12 is made of an elastic material (such as spring steel). When the gear teeth of the bevel gear 3 and the meshing bevel gear 13 are regenerated due to wear and tear, the middle part of the two force applying rods 12 Under the action of elastic force, it will further move to the first shaft hole 61 (see FIG. 2), that is, the middle of the two force applying rods 12 will further move from the lower part along the first conical surface 71 (see FIG. 8). ) Moving to the height of the first conical surface 71 (see FIG. 10), which will further separate the first gasket ring 4 from the second gasket ring 5, and will further push the bevel gear 3 along the axis of the transmission shaft 1 toward The direction of the meshing bevel gear 13 is moved, and finally the meshing transmission gap regenerated by the bevel gear 3 and the meshing bevel gear 13 due to wear is eliminated. Therefore, the bevel gear gap clearance device of the present invention can automatically compensate for the meshing transmission gap regenerated by the bevel gear 3 and the meshing bevel gear 13 due to wear.

As an improvement, please refer to FIG. 10 and FIG. 11, a second conical surface 72 coaxial with the second shaft hole 62 is provided on the end surface of the second backing ring 5 facing the first backing ring 4 And two second guide grooves 82 are provided along the radial direction of the second backing ring 5. In other words, the second backing ring 5 is machined with a second conical surface 72 coaxial with the second shaft hole 62, and there are two openings on the second backing ring 5 along the radial direction of the second backing ring 5 A second guide groove 82, a second conical surface 72 and a second guide groove 82 are all provided on the end surface of the second gasket ring 5 facing the first gasket ring 4. The second conical surface 72 of the second gasket ring 5 protrudes toward the first gasket ring 4, and the two second guide grooves 82 of the second gasket ring 5 are symmetrically disposed on both sides of the second shaft hole 62. Please refer to FIG. 10, the two second guide grooves 82 of the second backing ring 5 are aligned with the two first guide grooves 81 of the first backing ring 4 respectively, and the second guide grooves 82 and the first guide grooves 81 aligned with each other One slider 9 is embedded together, and the slider 9 can simultaneously slide along the second guide groove 82 and the first guide groove 81 aligned with each other. Please refer to FIGS. 4 and 10. In a preferred solution of the present invention, the second conical surface 72 of the second backing ring 5 and the first conical surface 71 of the first backing ring 4 are identical in structure, shape, and size (ie (The second conical surface 72 of the second backing ring 5 is mirror-symmetric to the first conical surface 71 of the first backing ring 4), the two second guide grooves 82 of the second backing ring 5 and the two first A guide groove 81 is completely identical in structure, shape, and size (that is, the two second guide grooves 82 of the second gasket ring 5 and the two first guide grooves 81 of the first gasket ring 4 are mirror-symmetrical), that is, after the above improvements The structure, shape, and size of the second backing ring 5 are completely consistent with the first backing ring 4, making the whole structure of the bevel gear transmission clearance anti-backlash device more symmetrical, the forcing rod 12, the slider 9, the screw 10, and the foot 11 The stress situation is better, in addition, the first backing ring 4 and the second backing ring 5 can also be interchanged.

As an improvement, please refer to FIG. 8, the bevel gear transmission clearance anti-backlash device can also add a pin 14 and a coil spring 15. The pin 14 is composed of a nail body and a large head provided at one end of the nail body. Referring to FIGS. 8 and 7, the first backing ring 4 has a small hole 16 with an axis parallel to the axis of the first shaft hole 61 between the outer cylindrical surface and the first conical surface 71 (in other words, the The first backing ring 4 has a small hole 16 with an axis parallel to the axis of the first shaft hole 61 near its outer cylindrical surface. The diameter of the small hole 16 is slightly larger than the diameter of the pin body of the pin 14. The number of 16 is two and is symmetrically arranged on both sides of the first conical surface 71. Referring to FIGS. 8 and 11, a pin hole 17 suitable for fixing the pin 14 is opened at the corresponding position of the second ring 5 and the small hole 16 of the first ring 4, and the axis of the pin hole 17 Parallel to the axis of the second shaft hole 62, the number of the pin holes 17 is two. Please refer to FIG. 8, the coil spring 15 is a thrust spring. The coil spring 15 is sleeved on the nail body of the pin 14. The nail body of the pin 14 sleeved with the coil spring 15 first passes through the small hole 16 of the first backing ring 4 and then is inserted And fixed in the pin hole 17 of the second gasket ring 5, one end of the coil spring 15 bears against the big end of the pin 14, the other end of the coil spring 15 bears against the first gasket ring 4, that is, the other end of the coil spring 15 bears against the first A backing ring 4 faces away from the end surface of the second backing ring 5 (in other words, the other end of the coil spring 15 bears against the end surface of the first backing ring 4 opposite to the second backing ring 5) and gives the first backing The ring 4 exerts a pushing force toward the second backing ring 5. Please refer to FIG. 3 and FIG. 4, the bevel gear transmission clearance anti-backlash device adds a pin 14 and a coil spring 15, and the bevel gear transmission clearance anti-backlash device can be assembled from separate parts into a single piece. The bevel gear transmission clearance anti-backlash device is located at In the non-use state (that is, the force applying rod 12 is in a free state without force), the coil spring 15 can make the first gasket ring 4 and the second gasket ring 5 move closer to each other, which facilitates transportation, sales, and installation. It is beneficial to adjust the transmission gap of the bevel gear transmission pair.

As an improvement, please refer to FIG. 10, the first backing ring 4 also has a number of counterbores 18 that are equal to the number of the small holes 16 and coaxial with the small holes 16, and the opening of the counterbore 18 is located at the first The backing ring 4 faces away from the end surface of the second backing ring 5 (in other words, the opening of the counterbore 18 is located on the end surface of the first backing ring 4 facing away from the second backing ring 5) The diameter of the counterbore 18 is larger than the radial size of the large head of the pin 14 to accommodate the large head of the pin 14, the body of the pin 14 covered with the coil spring 15 passes through the counterbore of the first backing ring 4 in sequence 18 and small hole 16, and then inserted and fixed in the pin hole 17 of the second gasket ring 5, one end of the coil spring 15 against the big end of the pin 14, the other end of the coil spring 15 against the counterbore of the first gasket ring 4 18 的孔肩 19. Opening the counterbore 18 on the first backing ring 4 can hide the large end of the pin 14 in the counterbore 18, making the bevel gear transmission clearance anti-backlash device smaller in axial size and more concise in shape.

In the present invention, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , Or integrated; can be directly connected or indirectly connected through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "upright", "upright", "horizontal" , "Inner", "outer", etc. indicate the orientation or positional relationship based on the drawings, or the orientation or positional relationship normally placed when the product of the invention is used, only for the convenience of describing the invention And simplify the description, rather than indicating or implying that the components or structures referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

In addition, the terms "horizontal", "vertical", "erected", "erected", "overhanging" and other terms do not mean that the components are required to be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", it does not mean that the structure must be completely horizontal, but it can be slightly inclined.

In the present invention, unless explicitly stated and defined otherwise, the first feature above or below the second feature may include the direct contact of the first and second features, or may include the first and second features not directly in contact It is through the contact of additional features between them. Moreover, the first feature above, above and above the second feature includes the first feature directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature is below, below, and below the second feature, including that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is less horizontal than the second feature.

Claims

A bevel gear transmission clearance anti-backlash device, characterized in that the bevel gear transmission clearance anti-backlash device and the bevel gear (3) are connected in series on the transmission shaft (1), and the bevel gear transmission clearance anti-backlash device is located in the cone Between the end face of the shaft hole on the back cone side of the gear (3) and the shoulder (2) of the transmission shaft (1), the anti-backlash device for the transmission clearance of the bevel gear includes a first gasket ring (4), a second gasket ring (5) and Gap adjustment mechanism;

The first backing ring (4) and the second backing ring (5) are both sheet-shaped ring-shaped revolving bodies. The first backing ring (4) is provided with a coaxial line with the first backing ring (4). The first shaft hole (61) mounted on the transmission shaft (1), the second gasket ring (5) is provided with a coaxial line with the second gasket ring (5), which is suitable for being mounted on the transmission shaft (1) The second shaft hole (62), the gap adjustment mechanism is sandwiched between the first gasket ring (4) and the second gasket ring (5), the first gasket ring (4), the gap adjustment mechanism, the second gasket ring ( 5) The shaft hole end surface of the bevel gear (3) on the back cone side and the shaft shoulder (2) of the drive shaft (1) are connected in series on the drive shaft (1) in sequence;

On the end surface of the first gasket ring (4) facing the second gasket ring (5), a first conical surface (71) coaxial with the first shaft hole (61) and along the first gasket ring ( 4) Two first guide grooves (81) are provided in the radial direction; the first conical surface (71) of the first gasket ring (4) protrudes toward the direction of the second gasket ring (5), and the first gasket ring ( 4) The two first guide grooves (81) are arranged symmetrically on both sides of the first shaft hole (61);

The gap adjustment mechanism is composed of two sliders (9), two screws (10), two feet (11) and two force applying rods (12), and the two sliders (9) are respectively embedded in The first guide groove (81) on both sides of the first shaft hole (61) of the first backing ring (4), and the slider (9) can slide along the first guide groove (81), and the slider (9) A threaded through hole is opened in the sliding direction of the slider (9). The screw (10) is provided with an external thread. The screw (10) is screwed into the threaded through hole of the slider (9). A shaft hole (61) is hinged at one end with a supporting foot (11) adapted to bear against the drive shaft (1), the supporting foot (11) can rotate relative to the screw (10), and the supporting foot (11) has a figure eight shape and is opposite to The rotation axis of the support leg (11) is symmetrical, and a hole suitable for the access of the forcing rod (12) is also opened on the slider (9), the forcing rod (12) is C-shaped, and the forcing rod ( 12) It is made of elastic material and can be flexed and elastically deformed. The two ends of the forcing rod (12) are respectively connected to the corresponding holes of the two sliders (9), which are connected to the two forcing rods of the slider (9) (12) Symmetrically arranged on both sides of the first shaft hole (61).
The anti-backlash device for a bevel gear transmission gap according to claim 1, wherein an end surface of the second gasket ring (5) facing the first gasket ring (4) is provided with the second The second conical surface (72) of the coaxial line of the shaft hole (62) and two second guide grooves (82) along the radial direction of the second gasket ring (5), the second of the second gasket ring (5) The conical surface (72) protrudes in the direction of the first gasket ring (4), and the two second guide grooves (82) of the second gasket ring (5) are symmetrically arranged on both sides of the second shaft hole (62). The two second guide grooves (82) of the second gasket ring (5) are respectively aligned with the two first guide grooves (81) of the first gasket ring (4), and the second guide groove (82) and the first guide groove (81) One slider (9) is embedded together and the slider (9) can slide along the second guide groove (82) and the first guide groove (81) at the same time.
The bevel gear transmission gap anti-backlash device according to claim 1 or 2, characterized in that a pin (14) and a coil spring (15) are further provided, and the pin (14) is composed of a nail body and the nail A big head at one end of the body, the first backing ring (4) has a small hole (16) with an axis parallel to the axis of the first shaft hole (61) between the outer cylindrical surface and the first conical surface (71) , The diameter of the small hole (16) is slightly larger than the diameter of the nail body of the pin (14), the number of small holes (16) is two and is symmetrically arranged on both sides of the first conical surface (71), A pin hole (17) suitable for fixing a pin (14) is opened in the second backing ring (5) corresponding to the small hole (16) of the first backing ring (4). The axis is parallel to the axis of the second shaft hole (62), the number of the pin holes (17) is two, the coil spring (15) is a thrust spring, and the coil spring (15) is sleeved on the nail body of the pin (14), The nail body of the pin (14) covered with the coil spring (15) first passes through the small hole (16) of the first gasket ring (4), and then is inserted and fixed in the pin hole (17) of the second gasket ring (5) , One end of the coil spring (15) bears against the big end of the pin (14), and the other end of the coil spring (15) bears against the first pad (4) a first and a backing ring (4) applied to the second backing ring (5) closer thrust.
The anti-backlash device for bevel gear transmission gap according to claim 3, characterized in that the first backing ring (4) is also provided with an equal number of the small holes (16) and is shared with the small holes (16) The counterbore (18) of the axis, the opening of the counterbore (18) is located on the end surface of the first backing ring (4) facing away from the second backing ring (5), and the diameter of the counterbore (18) The radial size of the big head of the pin (14) is larger than that of the big head of the pin (14) to accommodate the big head of the pin (14). ) 'S counterbore (18) and small hole (16), and then inserted and fixed in the pin hole (17) of the second gasket ring (5), one end of the coil spring (15) bears against the big end of the pin (14), The other end of the coil spring (15) bears against the shoulder (19) of the counterbore (18) of the first gasket (4).