Jaw type combiner

Abstract

The utility model provides a jaw type combiner which comprises a supporting shaft, and transmission shafts are movably installed on the two sides of the supporting shaft. A chain wheel base is fixedly installed on the outer side wall of the supporting shaft, separation chain wheels are fixedly installed at the tail end of the transmission shaft, trapezoidal gear teeth are evenly distributed on the chain wheel base, trapezoidal gear teeth are evenly distributed on the separation chain wheels, the two sides of the chain wheel base are symmetrically meshed with a pair of separation chain wheels through the trapezoidal gear teeth, and a bearing is installed on the transmission shaft. A spring is arranged between the bearing and the separation crankset; a transmission gear is fixedly installed on the outer side wall of the crankset seat, a guide groove is formed in the separation crankset in the circumferential direction, a chuck is installed in the guide groove in a sliding mode through a guide block, and the separation and embedding speed of the jaw type combiner is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a tooth-embedded coupling. Background Art

[0002] The existing hand-held rotary tillage machine controls the steering by pulling the brake to control the separation of the gears on the wheel shaft. The specific reference document publication number is CN203318155, and the hand-held tractor speed change travel box also has a steering rod on the speed change travel box. When turning left, the left steering gear moves laterally under the action of the pull wire to disengage it from the left gear of the three-stage transmission gear, cutting off the power, and the left half shaft loses power and slows down; the right steering gear is meshed with the right gear of the three-stage transmission gear 4, and the right half shaft rotates normally. At this time, the half shaft rotates faster on the right and slower on the left, thereby turning to the left, and vice versa.

[0003] The inventor discovered the following technical problems:

[0004] In the muddy farming environment, the roller of the rotary tiller sinks into the mud. When steering is required, the roller is affected by the environment and transmits the downward suction of the mud to the steering gear position through the transmission shaft system, and the steering gear is separated by the clutch. Referring to the tooth-type clutch with friction plate with publication number CN214331266U, the tooth-type clutch is achieved by the teeth on the end faces of the two half clutches engaging or disengaging with each other to achieve the clutch of the master and driven shafts, thereby transmitting the power. However, the rectangular planes of the rectangular tooth-type clutch fit together under the action of the mud, and the rectangular planes are difficult to separate under the action of friction, resulting in the inability to turn. At the same time, when engaging, the rectangular teeth have poor centrality, and it is necessary to adjust the handle of the agricultural machinery and press the pull switch multiple times to complete the engagement. Utility Model Content

[0005] The utility model aims to provide a tooth-embedded coupling, which can solve the technical problem that the existing rectangular tooth-embedded clutch is difficult to separate and engage in a muddy environment.

[0006] To achieve the above-mentioned purpose, the utility model proposes a tooth-embedded coupling, comprising a supporting shaft, with a transmission shaft movably installed on both sides of the supporting shaft; a chainring seat is fixedly installed on the outer wall of the support shaft, a separation chainring is fixedly installed on the end of the transmission shaft, trapezoidal gear teeth are evenly distributed on the chainring seat, trapezoidal gear teeth are evenly distributed on the separation chainring, a pair of separation chainrings are symmetrically meshed on both sides of the chainring seat through trapezoidal gear teeth, a bearing is installed on the transmission shaft, and a spring is installed between the bearing and the separation chainring; a transmission gear is fixedly installed on the outer wall of the chainring seat, a guide groove is circumferentially provided on the separation chainring, and a chuck is slidably installed in the guide groove through a guide block.

[0007] It is further configured that a plurality of trapezoidal gear teeth are evenly distributed along the circumference of the tooth plate seat, the trapezoidal gear teeth include a tooth top surface, guide inclined surfaces are arranged on both sides of the tooth top surface, and the angle between the normal line perpendicular to the tooth top surface and the guide inclined surface is 2 degrees to 45 degrees.

[0008] It is further configured that a plurality of trapezoidal gear teeth are evenly distributed along the circumference of the separation tooth plate, the trapezoidal gear teeth are provided with guide bevels, guide bevels are provided on both sides of the tooth top surface, and the angle between the normal line perpendicular to the tooth top surface and the guide bevel is 2 degrees to 45 degrees.

[0009] It is further configured that stepped shaft sections are installed at both ends of the support shaft, an embedding groove is provided at one end of the transmission shaft, and the transmission shaft is sleeved on the stepped shaft section through the embedding groove.

[0010] It is further configured that the bearing is slidably mounted in the reduction box mounting cylinder, the mounting cylinder is provided with a boss, and a distance is provided between the bearing and the boss.

[0011] It is further configured that a semicircular groove is provided on the chuck, guide blocks are symmetrically installed on the semicircular groove, and the guide blocks are slidably installed in the guide groove.

[0012] It is further configured that a connecting rod is installed on the top of the chuck, and a mounting plate is installed on the end of the connecting rod.

[0013] It is further configured that the connecting rod passes through a circular hole opened in a side wall of the reduction box, and the connecting rod extends to the outside of the reduction box.

[0014] It is further configured that a wire hole is provided at the end of the mounting plate.

[0015] It is further configured that a retaining ring is arranged between the separation chainring and the chainring seat and on the transmission shaft, and a retaining ring is arranged on one side of the retaining ring.

[0016] Beneficial effects of one or more of the above technical solutions:

[0017] When trapezoidal gear teeth are applied to the reduction box, even if the agricultural machinery roller is subjected to suction caused by mud, the friction between the guide slopes is smaller than the friction between the planes of the rectangular trapezoidal gear teeth, so that the greater the external force the trapezoidal gear teeth are subjected to, the easier it is to generate outward thrust. When the rotary tiller roller sinks into the mud, the trapezoidal gear teeth can still be disengaged along the trapezoidal gear teeth guide slope. At the same time, the guide slope has a guiding effect. Under the elastic force of the spring at the end of the separation tooth plate, when engagement is required, the trapezoidal gear teeth can quickly engage under the guiding effect of the guide slope. The cooperation of the trapezoidal gear teeth and the spring improves the separation and engagement speed of the tooth-type coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation on the present application.

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a bottom view of the utility model.

[0021] Figure 3 for Figure 2 Cross-sectional view at AA in the middle.

[0022] Figure 4 It is a schematic diagram of the installation structure of the transmission shaft and the reduction box of the utility model.

[0023] Figure 5 It is a cross-sectional view of the trapezoidal gear teeth of the present invention.

[0024] In the figure,

[0025] 1 transmission gear; 11 support shaft; 12 stepped shaft section;

[0026] 2 tooth plate seat; 21 trapezoidal gear teeth; 22 guide inclined surface; 23 tooth top surface;

[0027] 3 separation tooth plate; 32 guide groove; 33 transmission shaft; 34 embedded groove; 35 spring; 36 bearing;

[0028] 4 chuck; 41 semicircular groove; 42 guide block; 43 connecting rod; 44 mounting plate; 45 wire hole;

[0029] 5 reduction box; 51 round hole; 52 mounting cylinder; 53 boss;

[0030] 6. Retaining ring; 7. Retaining ring. DETAILED DESCRIPTION

[0031] The specific implementation of this embodiment is described below in conjunction with the accompanying drawings.

[0032] A tooth-type coupling, referring to Figure 1 , including a support shaft 11, with a transmission shaft 33 movably installed on both sides of the support shaft 11; a toothed disc seat 2 is fixedly installed on the outer wall of the support shaft 11, and a separation toothed disc 3 is fixedly installed at the end of the transmission shaft 33, trapezoidal gear teeth are evenly distributed on the toothed disc seat 2, and trapezoidal gear teeth are evenly distributed on the separation toothed disc 3. A pair of separation toothed discs 3 are symmetrically meshed on both sides of the toothed disc seat 2 through trapezoidal gear teeth, a bearing 36 is installed on the transmission shaft 33, and a spring 35 is installed between the bearing 36 and the separation toothed disc 3; a transmission gear 1 is fixedly installed on the outer wall of the toothed disc seat 2, and a guide groove 32 is provided on the separation toothed disc 3 in the circumferential direction, and a chuck 4 is slidably installed in the guide groove 32 through a guide block 42.

[0033] A plurality of trapezoidal gear teeth 21 are evenly distributed along the circumference of the chainring seat 2, and the trapezoidal gear teeth 21 are provided with guiding inclined surfaces 22. A plurality of trapezoidal gear teeth 21 are evenly distributed along the circumference of the separation chainring 3, and the trapezoidal gear teeth 21 are provided with guiding inclined surfaces 22. The friction force between the guiding inclined surfaces 22 and the guiding inclined surfaces 22 is smaller than the friction force between the planes of the rectangular trapezoidal gear teeth 21.

[0034] A plurality of trapezoidal gear teeth 21 are evenly distributed along the circumference of the tooth plate seat 2. The trapezoidal gear teeth 21 include a tooth top surface 23. Guide slopes 22 are arranged on both sides of the tooth top surface 23. The angle between the normal line perpendicular to the tooth top surface 23 and the guide slope 22 is 2 to 45 degrees.

[0035] A plurality of trapezoidal gear teeth 21 are evenly distributed along the circumference of the separation tooth plate. The trapezoidal gear teeth 21 include a tooth top surface 23. Guide slopes 22 are arranged on both sides of the tooth top surface 23. The angle between the normal line perpendicular to the tooth top surface 23 and the guide slope 22 is 2 to 45 degrees.

[0036] The step shaft sections 12 are installed at both ends of the support shaft 11. A groove 34 is provided at one end of the transmission shaft 33. The transmission shaft 33 is sleeved on the step shaft section 12 through the groove 34. The transmission shaft 33 slides on the step shaft through the groove 34.

[0037] Reference Figure 2 and attached Figure 3 The bearing 36 is slidably installed in the mounting cylinder 52 of the reduction box 5, and the mounting cylinder 52 is provided with a boss 53. A spacing is set between the bearing 36 and the boss 53. The spacing between the bearing 36 and the boss 53 is the sliding space of the front bearing 36. The spacing between the bearing 36 and the boss 53 is greater than the tooth height of the trapezoidal gear teeth 21, thereby ensuring that the separation chain plate 3 and the pressure plate seat can be completely separated.

[0038] Reference Figure 1 The chuck 4 has a semicircular groove 41, on which a guide block 42 is symmetrically mounted. The guide block 42 is slidably mounted in the guide groove 32. The guide block 42 is a solid cylinder. The width of the guide groove 32 is greater than the diameter of the guide block 42. The rotation of the transmission gear 1 drives the pressure plate seat to rotate. The tooth plate seat 2 drives the separation tooth plate 3 and the transmission shaft 33 to rotate through the trapezoidal teeth. The moving shaft rotates around the semicircular groove 41 formed on the chuck 4.

[0039] Reference Figure 4 A connecting rod 43 is installed at the top of the chuck 4, and a mounting plate 44 is installed at the end of the connecting rod 43. The mounting plate 44 extends to the outside of the reduction box 5 through the connecting rod 43. The connecting rod 43 is rotated by rotating the mounting plate 44, and the rotation of the connecting rod 43 drives the chuck 4 to rotate.

[0040] The connecting rod 43 passes through the circular hole 51 opened on the side wall of the reduction box 5, and extends to the outside of the reduction box 5. The connecting rod 43 can rotate around the center of the circular hole 51, thereby transmitting the rotation direction downward to the guide block 42 below. Since the movement range of the guide block 42 is limited in the guide groove 32, the guide block 42 converts the circular motion of the connecting rod 43 into linear motion along the transmission shaft 33.

[0041] A wire hole 45 is provided at the end of the mounting plate 44, in which an existing wire brake wire can be fixed, and the other end of the brake wire is installed on the existing brake brake. When separation is required, the brake brake is squeezed, and the brake brake drives the wire brake wire to pull the chuck 4 through the connecting rod 43 to rotate along the circular hole 51 set on the side wall of the reduction box 5, and then the guide block 42 pulls the separation chain plate 3 out of the chain plate seat 2 along the axial direction of the transmission shaft 33. At this time, the separation chain plate 3 compresses the spring 35 until the spring 35 pushes the bearing 36 to the boss 53, and the rotation of the transmission gear 1 will not be transmitted to the pulled out transmission shaft 33. The end of the transmission shaft 33 is connected to the wheel. At this time, one wheel continues to rotate driven by the transmission gear 1, while the other wheel does not rotate, and the vehicle body as a whole turns in the direction where the wheel does not rotate.

[0042] A retaining ring 6 is arranged between the separation tooth plate 3 and the tooth plate seat 2 and on the transmission shaft 33, and a retaining ring 7 is arranged on one side of the retaining ring 6. The arrangement of the retaining ring 6 and the retaining ring 7 ensures that the bottom surfaces of the trapezoidal teeth between the separation tooth plate 3 and the tooth plate seat 2 will not be completely fitted when meshing, thereby reducing friction.

[0043] When the tooth plate seat 2 and the separation pressure plate need to be separated, the utility model:

[0044] Squeeze the brake, the brake drives the wire brake line to pull through the connecting rod 43 to pull the chuck 4 to rotate along the round hole 51 set on the side wall of the reduction box 5, and then the guide block 42 pulls the separation chain plate 3 out of the chain plate seat 2 along the axial direction of the transmission shaft 33. At this time, the separation chain plate 3 compresses the spring 35 until the spring 35 pushes the bearing 36 to the boss 53, and the rotation of the transmission gear 1 will not be transmitted to the pulled out transmission shaft 33. The end of the transmission shaft 33 is connected to the wheel. At this time, one wheel continues to rotate driven by the transmission gear 1, while the other wheel does not rotate, and the vehicle body as a whole turns in the direction where the wheel does not rotate;

[0045] When the tooth plate seat 2 and the separation pressure plate need to be engaged, the utility model:

[0046] When the brake is released, the spring 35 quickly presses the separation chainring 3 back onto the chainring seat 2 under the action of elastic force. Since the guiding bevel 22 between the trapezoidal gear teeth 21 and the trapezoidal gear teeth 21 has a guiding effect, the friction between the guiding bevel 22 and the guiding bevel 22 is smaller than the friction between the planes of the rectangular trapezoidal gear teeth 21. When engagement is required, the trapezoidal gear teeth 21 can be quickly engaged under the guiding effect of the guiding bevel 22.

[0047] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A tooth-type coupling, characterized in that: It comprises a support shaft, and transmission shafts are movably mounted on both sides of the support shaft; The outer wall of the support shaft is fixedly mounted on the chainring seat, the end of the transmission shaft is fixedly mounted on the separation chainring seat, trapezoidal gear teeth are evenly distributed on the chainring seat, the separation chainring plate is evenly distributed on the trapezoidal gear teeth, a pair of separation chainring plates are symmetrically meshed on both sides of the chainring seat through trapezoidal gear teeth, a bearing is installed on the transmission shaft, a spring is installed between the bearing and the separation chainring plate, a transmission gear is fixedly mounted on the outer wall of the chainring seat, a guide groove is provided in the circumferential direction on the separation chainring plate, and a chuck is slidably mounted in the guide groove through a guide block.

2. A tooth-type coupling according to claim 1, characterized in that: A plurality of trapezoidal gear teeth are evenly distributed along the circumference of the tooth plate seat, and the trapezoidal gear teeth include tooth top surfaces, and guide inclined surfaces are arranged on both sides of the tooth top surfaces, and the angle between the normal line perpendicular to the tooth top surfaces and the guide inclined surfaces is 2 degrees to 45 degrees.

3. A tooth-type coupling according to claim 1, characterized in that: A plurality of trapezoidal gear teeth are evenly distributed along the circumference of the separation tooth plate, and the trapezoidal gear teeth are provided with guiding inclined surfaces. The guiding inclined surfaces are arranged on both sides of the tooth top surface, and the angle between the normal line perpendicular to the tooth top surface and the guiding inclined surface is 2 degrees to 45 degrees.

4. A tooth-type coupling according to claim 1, characterized in that: Stepped shaft sections are installed at both ends of the support shaft, an embedding groove is provided at one end of the transmission shaft, and the transmission shaft is sleeved on the stepped shaft section through the embedding groove.

5. A tooth-type coupling according to claim 1, characterized in that: The bearing is slidably mounted in the reduction box mounting cylinder, the mounting cylinder is provided with a boss, and a distance is set between the bearing and the boss.

6. A tooth-type engagement member according to claim 1, characterized in that: The chuck is provided with a semicircular groove, a guide block is symmetrically mounted on the semicircular groove, and the guide block is slidably mounted in the guide groove.

7. A tooth-type coupling according to claim 6, characterized in that: A connecting rod is installed at the top of the chuck, and a mounting plate is installed at the end of the connecting rod.

8. A tooth-type coupling according to claim 7, characterized in that: The connecting rod passes through a circular hole provided on the side wall of the reduction box, and the connecting rod extends to the outside of the reduction box.

9. A tooth-type coupling according to claim 7, characterized in that: A wire hole is provided at the end of the mounting plate.

10. The tooth-type coupling according to claim 1, characterized in that: A retaining ring is arranged between the separation toothed disc and the toothed disc seat and on the transmission shaft, and a retaining ring is arranged on one side of the retaining ring.

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