CN211288706U

CN211288706U - Rack and pinion closing device

Info

Publication number: CN211288706U
Application number: CN201922389841.7U
Authority: CN
Inventors: 张卫
Original assignee: Hunan Zhongchuan Intelligent Technology Co ltd
Current assignee: Hunan Zhongchuan Intelligent Technology Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-08-18
Anticipated expiration: 2029-12-26

Abstract

The utility model relates to the technical field of gear rack transmission, in particular to a gear rack pressing device, which comprises a base, linear slide rails are fixed on the top wall of the base near both sides through bolts, racks are fixed on the top wall of the base near the right linear slide rails through bolts, a seat plate is arranged above the base, linear slide blocks are fixed on the bottom wall of the seat plate near both sides through bolts, the size of the linear slide blocks is matched with that of the linear slide rails, the top wall of the seat board is provided with a rotary disc close to the central position, the top wall of the rotary disc is provided with a motor close to the central position, the end part of an output shaft of the motor is coaxially connected with a gear, the size of the gear is matched with the size of the rack, this rack and pinion closing device can effectual regulation gear and the clearance between the rack, makes it compress tightly moderately, can reduce the wearing and tearing between the rack and pinion.

Description

Rack and pinion closing device

Technical Field

The utility model relates to a rack and pinion transmission technical field, specifically speaking relates to a rack and pinion closing device.

Background

The linear motion device of the truss robot is generally provided with a gear rack transmission mechanism, the bearing capacity of the gear rack transmission is large, the transmission precision is high, but the requirements of the gear rack transmission on the manufacturing and mounting precision are high, and if the manufacturing and mounting precision is poor, the transmission noise is large, and the abrasion is also large. During the meshing operation of the gear and the rack, proper clearance must be kept between the gear and the rack. However, the conventional rack and pinion transmission cannot adjust the pressing gap between the two, and if the gap is too large, vibration and noise are likely to be generated during the operation, and if the gap is too small, the friction may be too large, and the operation may be not smooth or may be locked.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rack and pinion closing device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a gear and rack pressing device comprises a base, linear sliding rails are fixed on the top wall of the base close to two sides through bolts, racks are further fixed on the top wall of the base close to the right side of the linear sliding rails through bolts, a seat plate is arranged above the base, linear sliding blocks are fixed on the bottom wall of the seat plate close to the two sides through bolts, the size of each linear sliding block is matched with that of the corresponding linear sliding rail and is in sliding connection with the corresponding linear sliding rail, a rotary disc is arranged on the top wall of the seat plate close to the central position, a motor is arranged on the top wall of the rotary disc close to the central position, a gear is coaxially connected to the end portion of an output shaft of the motor, the size of the gear is matched with that of the racks and is meshed with the racks, a connecting plate is fixed on the top wall of the rotary disc through bolts, and a pressing device is arranged, the pressing device comprises a screw rod seat, a screw rod is inserted into the screw rod seat in an inserting mode, one end of the screw rod is fixed to the connecting plate through a bolt, a spring is further sleeved on the screw rod, and a nut is connected to the other end of the screw rod in a threaded mode.

Preferably, the screw seat is fixed on the top wall of the seat plate through bolts, and the outer walls of the two sides of the seat plate are both fixed with side plates through bolts.

Preferably, the motor is fixedly connected with the turntable through a bolt.

Preferably, the inside of carousel has seted up and has changeed the hole, change the hole embedded round pin axle that is equipped with, just change the hole with rotate between the round pin axle and be connected.

Preferably, a plurality of positioning adjusting holes are further formed in the turntable, the positioning adjusting holes are annularly and equidistantly arranged, and positioning screws are connected to the inner threads of the positioning adjusting holes in an annular mode.

Compared with the prior art, the beneficial effects of the utility model are that:

the gear rack pressing device can utilize a spring force pressing mode through the arrangement of the pressing device, and the size of pressing force can be adaptively adjusted, so that the abrasion between gear racks can be reduced, and the maintenance cost of the device can be reduced; meanwhile, after the gap between the gear and the rack is adjusted, vibration, noise and abnormal sound caused by the gear and the rack pressing can be eliminated, the frequency of faults is reduced, and the service life of the device is greatly prolonged.

Drawings

FIG. 1 is a schematic view of the entire structure of embodiment 1;

FIG. 2 is a schematic rear view of the structure of embodiment 1;

FIG. 3 is a schematic left-view structural view in example 1;

FIG. 4 is a schematic top view of the structure of example 1;

FIG. 5 is a schematic structural view of a turntable in embodiment 1;

fig. 6 is a schematic structural view of a pressing device in embodiment 1.

In the figure: 1. a base; 10. a linear slide rail; 11. a rack; 2. a seat plate; 20. a side plate; 21. a linear slider; 3. a turntable; 30. hole turning; 31. positioning the adjusting hole; 32. a pin shaft; 33. a set screw; 4. a motor; 5. a connecting plate; 6. a pressing device; 60. a screw seat; 61. a screw; 62. a spring; 63. a nut; 7. a gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example 1

A gear rack pressing device is shown in figures 1-6 and comprises a base 1, linear slide rails 10 are fixed on the top wall of the base 1 close to two sides through bolts, racks 11 are further fixed on the top wall of the base 1 close to the right linear slide rail 10 through bolts, a seat plate 2 is arranged above the base 1, linear slide blocks 21 are fixed on the bottom wall of the seat plate 2 close to two sides through bolts, the size of each linear slide block 21 is matched with that of each linear slide rail 10 and is in sliding connection with the linear slide rails, a rotary plate 3 is arranged on the top wall of the seat plate 2 close to the center, a motor 4 is arranged on the top wall of the rotary plate 3 close to the center, a gear 7 is coaxially connected with the end part of an output shaft of the motor 4, the size of the gear 7 is matched with that of the rack 11 and is meshed with the gear 7, a connecting plate 5 is fixed on the top wall of the rotary plate 3 through bolts, a pressing, the pressing device 6 comprises a screw rod seat 60, a screw rod 61 is inserted into the screw rod seat 60, one end of the screw rod 61 is fixed on the connecting plate 5 through a bolt, a spring 62 is further sleeved on the screw rod 61, and a nut 63 is in threaded connection with the other end of the screw rod 61.

In this embodiment, the screw seat 60 is fixed on the top wall of the seat plate 2 by bolts, the side plates 20 are fixed on the outer walls of the two sides of the seat plate 2 by bolts, the screw seat 60 is stably fixed on the bottom plate 2, the nut 63 and the positioning screw 33 are loosened, the screw 61 is pushed to extrude the connecting plate 5, so that the rotary table 3 and the gear 7 can be driven to move, the gap between the gear 7 and the rack 11 can be adjusted, the distance between the gear 7 and the rack 11 is moderate, and the abrasion between the gear 7 and the rack 11 can be reduced.

Specifically, the motor 4 is fixedly connected with the rotary table 3 through the bolt, so that the motor 4 can be stably fixed on the rotary table 3, and stable work of the motor is facilitated.

Furthermore, a rotating hole 30 is formed in the rotating disc 3, a pin shaft 32 is embedded in the rotating hole 30, and the rotating hole 30 is rotatably connected with the pin shaft 32. A plurality of positioning adjustment holes 31 have still been seted up to carousel 3 inside, and be annular equidistant arranging between a plurality of positioning adjustment holes 31, positioning adjustment hole 31 internal threaded connection has set screw 33, loosen set screw 33 because leave certain clearance between positioning adjustment hole 31 on the carousel 3 and set screw 33, carousel 3 can rotate around round pin axle 32, accessible connecting plate 5, carousel 3 and round pin axle 32 three inter-connecting rod effect, drive and the gear 7 on the motor 4 compress tightly on rack 11, it can fix carousel 3 to tighten set screw 33 again, thereby can make gear 7 compress tightly on rack 11.

It is worth to be noted that the motor 4 can adopt a motor of a model 57HB76-401A manufactured by DeXuan Motor Limited company in Leqing, and a matched circuit and a power supply thereof can also be provided by the manufacturer; furthermore, the present invention relates to the motor 4 being the prior art, and the technical personnel in the field can completely realize the present invention without extra description, and the present invention also does not relate to the improvement of the structure and the working principle of the motor 4.

When the gear and rack pressing device is used, the nut 63 and the positioning screw 33 are firstly unscrewed, a certain gap is reserved between the positioning adjusting hole 31 on the rotary disc 3 and the positioning screw 33, the rotary disc 3 can rotate around the pin shaft 32, the gear 7 on the motor 4 is driven to be pressed on the rack 11 through the connecting rod action among the connecting plate 5, the rotary disc 3 and the pin shaft 32, then the connecting plate 5 can be pressed by pushing the screw rod 61, the rotary disc 3 and the gear 7 can be driven to move, the gap between the gear 7 and the rack 11 can be adjusted, the pressing distance between the gear 7 and the rack 11 is moderate, finally the positioning screw 33 and the nut 63 are screwed, the rotary disc 3 can be fixed, and the gear 7 can be pressed on the rack 11.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a rack and pinion closing device, includes base (1), its characterized in that: the top wall of the base (1) is close to two sides and is fixedly provided with linear sliding rails (10) through bolts, the top wall of the base (1) is close to the right side, the linear sliding rails (10) are also fixedly provided with racks (11) through bolts, a seat plate (2) is arranged above the base (1), the bottom wall of the seat plate (2) is close to two sides and is fixedly provided with linear sliding blocks (21) through bolts, the size of each linear sliding block (21) is matched with the size of each linear sliding rail (10) and is in sliding connection with the linear sliding rails, a turntable (3) is arranged at the position, close to the center, of the top wall of the seat plate (2), a motor (4) is arranged at the position, close to the center, of the top wall of the turntable (3), a gear (7) is coaxially connected to the end of an output shaft of the motor (4), the size of the gear (7) is matched with, there is connecting plate (5) through the bolt fastening on the roof of carousel (3), connecting plate (5) deviate from one side department of rack (11) is equipped with closing device (6), closing device (6) include screw rod seat (60), screw rod (61) have been pegged graft to the inside of screw rod seat (60), the bolt fastening is passed through to the one end of screw rod (61) on connecting plate (5), spring (62) have still been cup jointed on screw rod (61), the other end department threaded connection of screw rod (61) has nut (63).

2. The rack and pinion hold-down device of claim 1, wherein: the screw rod seat (60) is fixed on the top wall of the seat plate (2) through bolts, and the outer walls of the two sides of the seat plate (2) are both fixed with side plates (20) through bolts.

3. The rack and pinion hold-down device of claim 1, wherein: the motor (4) is fixedly connected with the rotary disc (3) through bolts.

4. The rack and pinion hold-down device of claim 1, wherein: the rotary table is characterized in that a rotary hole (30) is formed in the rotary table (3), a pin shaft (32) is embedded in the rotary hole (30), and the rotary hole (30) is rotatably connected with the pin shaft (32).

5. The rack and pinion hold-down device of claim 1, wherein: a plurality of positioning adjusting holes (31) are further formed in the turntable (3) and are arranged in an annular and equidistant mode between the positioning adjusting holes (31), and positioning screws (33) are connected to the inner threads of the positioning adjusting holes (31).