CN218625275U - Pin gear chain transmission mechanism - Google Patents

Abstract

A pin-tooth chain transmission mechanism comprises a gear assembly, a gear seat assembly, a chain and a protection wheel assembly, wherein the chain is formed by connecting a certain number of chain link assemblies end to end, the gear assembly is in transmission connection with the chain link assemblies, the chain link assemblies move along the direction of a guide groove in the gear seat assembly, and the protection wheel assembly is positioned on one side, away from the guide groove of the gear assembly, in the gear seat assembly and can be in contact with the chain link assemblies. The utility model discloses a drive mechanism increases the safety protection wheel in the guide way side, reduces the probability that chain link subassembly sliding friction touched, reduces frictional resistance, improves transmission efficiency.

Description

Pin gear chain transmission mechanism

Technical Field

The utility model relates to a round pin tooth chain drive.

Background

The patent number "CN202120530343.4" discloses a rectangular pipe chain link, chain and rigid chain lift actuating mechanism, the said rectangular pipe chain link, including chain link body, tie plate, fixed column, locking pivot, left bush, right bush, side direction locking plate; the chain comprises a plurality of sections of rectangular pipe chain links, wherein the sections of the rectangular pipe chain links are sequentially connected with one another; the rigid chain lifting actuating mechanism comprises a chain, a chain disc, a box body and a transmission spacer bush, wherein an input shaft is arranged on the box body, and the input shaft is connected with the chain disc and can rotate together to realize lifting of the chain.

The technical scheme has the following defects:

1. the chain links of the rectangular pipes have more parts and complex structures, so that the self weight is larger, the structure is unstable, and the manufacturing is not facilitated;

2. the structure of the double chain wheel has the problem of insufficient jacking force;

3. the guiding is not stable and reliable enough when the elevator is lifted;

4. the rectangular pipe chain links and the box body are kept in sliding friction contact, so that the friction resistance is improved, and the transmission efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

To above demand, the utility model provides a round pin tooth chain drive, chain link subassembly simple structure is convenient for make, increases the safety protection wheel in the guide way side, reduces the probability that chain link subassembly sliding friction touched, reduces frictional resistance, improves transmission efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a pin-tooth chain transmission mechanism comprises a gear assembly, a gear seat assembly, a chain formed by connecting a certain number of chain link assemblies end to end, and a protective wheel assembly. The gear assembly is connected with the chain link assembly in a transmission mode, the chain link assembly moves along the direction of the guide groove in the gear seat assembly, and the protective wheel assembly is located on one side, far away from the guide groove of the gear assembly, of the gear seat assembly and can be in contact with the chain link assembly. The protective wheel assembly enables the chain link assembly to be kept in the ascending section to keep a rolling state, so that the probability of sliding friction contact is reduced, the friction resistance is reduced, and the transmission efficiency is improved.

Preferably, the gear assembly comprises a gear shaft and a pin gear arranged on the gear shaft, and roller bearings are arranged on the gear shaft on two sides of the pin gear.

The gear seat assembly comprises two bearing seat plates which are oppositely arranged and connected through a certain number of positioning shafts, a bearing mounting hole and a certain number of positioning shaft holes are formed in the corresponding positions on the bearing seat plates, two rails are respectively arranged at the corresponding positions on the inner sides of the bearing seat plates, and a guide groove is formed between the two rails.

The chain link assembly comprises two chain plates and two connecting plates, a connecting plate pin shaft is connected between the bottoms of the rear sides of the two chain plates, two ends of the connecting plate pin shaft protrude out of the chain plates and extend into the guide grooves, the two connecting plates are respectively fixed at the tops of the rear sides of the two chain plates and are in rotating connection with the connecting plate pin shaft of the adjacent chain link assembly, and at least one gear pin shaft is arranged between the front sides of the two chain plates.

The gear shaft is driven by a speed reducing motor, the two roller bearings are respectively arranged in the bearing mounting holes of the two bearing seat plates, and the pin gear and the gear pin shaft form a matching relation of transmission connection.

Preferably, the two tail gear pins are distributed vertically.

Preferably, one corner of each chain plate where the connecting plate pin shaft is located is a fillet, so that the mutual interference of the chain plates of two adjacent chain link assemblies is avoided.

Preferably, the protection wheel assembly comprises a protection wheel shaft and two protection wheels arranged on the protection wheel shaft, protection wheel shaft holes are formed in corresponding positions on the two bearing seat plates, and the positions of the two protection wheels correspond to the two chain plates.

Preferably, the number of the guard wheel assemblies is one or more.

Preferably, two ends of the connecting plate pin shaft are provided with track rollers.

Preferably, the width of the guide groove is 0.5mm to 1mm larger than the diameter of the track roller, so that the guide effect and the track roller are always in a rolling state in the guide track.

Preferably, four pin gear sleeves are arranged on the driving gear pin shaft, and four rows of pin gears are arranged on the corresponding gear shaft.

Preferably, the four pin tooth sleeves are respectively positioned at the inner side and the outer side of the two chain plates.

Preferably, a plurality of rib plates are arranged between the two chain plates. The rib plates are fixed with the chain plates by welding, the number of the rib plates can be three, the rib plates are distributed in a triangular manner, and the rib plates are positioned at a gap between the two chain plates.

The utility model has the advantages that: the chain link is of a double-chain-plate structure, the chain plates are distributed on two sides, the cross section is wide, the number of components is small, the structure is simple, the self weight of the chain link is light, the structure is stable, the material utilization rate is high, and the manufacturing is facilitated;

safety protection wheels are additionally arranged on the guide rail side and used for ensuring that the rail roller wheel can quickly keep a rolling state with the side face of the rail after entering the guided rail ascending section, and the rail roller wheel of the chain link positioned in the ascending section can always keep the rolling state on the side face of the rail, so that the probability of sliding friction contact is reduced, the rail roller wheel is always kept in rolling contact in the ascending section, the friction resistance is reduced, and the transmission efficiency is improved;

the width dimension of the guide groove of the guide rail is 0.5 to 1mm larger than the wheel diameter dimension of the rail roller, so that the rail roller is always in a rolling state in the guide groove, the probability of sliding friction contact is reduced, the rail roller is always kept in rolling contact, the friction resistance is reduced, and the transmission efficiency is improved;

fourth, the structure of the 4-row chain wheel increases the jacking force of the mechanism;

fifthly, due to the structural relationship between the rows of chain wheels and the chain plates and the pin tooth sleeves of the chain link assemblies, a double-guide combination of roller guide and gear guide is formed in the axial direction of the gears, and the guide is more stable and reliable during lifting;

sixthly, welding two chain plates of the chain link framework into a whole through three rib plates, and enabling the structure to be firm.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is another perspective view of the present invention;

fig. 3 is a transverse cross-sectional view of the present invention;

fig. 4 is a longitudinal sectional view of the present invention;

FIG. 5 is a perspective view of the middle bearing plate of the present invention;

FIG. 6 is a front view of the bearing seat plate of the present invention;

fig. 7 is a perspective view of a link assembly according to the present invention;

FIG. 8 is a block diagram of a link assembly and pin gear of the present invention;

FIG. 9 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 8;

fig. 10 is a cross-sectional view of a guard wheel assembly of the present invention.

The main elements in the figures are symbolically illustrated: 10. a gear assembly; 11. a gear shaft; 12. a pin gear; 13. a roller bearing;

20. a gear housing assembly; 21. a bearing seat plate; 21.1, bearing mounting holes; 21.2, positioning the shaft hole; 21.3, protecting the axle hole; 22. positioning the shaft; 23. a track; 23.1, a guide groove;

30. a link assembly; 31. a chain plate; 32. a connecting plate; 33. a connecting plate pin shaft; 34. a gear pin; 35. a track roller; 36. a pin gear sleeve; 37. a rib plate;

40. a guard wheel assembly; 41. a protective wheel shaft; 42. a guard wheel.

Detailed Description

In order to make the present invention clearer, the present invention is further described below with reference to the accompanying drawings.

The first embodiment is as follows: as shown in fig. 1-4, a pin and tooth chain drive mechanism includes a gear assembly 10, a gear carrier assembly 20, a chain of a number of link assemblies 30 connected end-to-end, and a plurality of guard wheel assemblies 40.

The gear assembly 10 includes a gear shaft 11 and a pin gear 12 thereon, and roller bearings 13 are disposed on the gear shaft 11 on both sides of the pin gear 12.

Referring to fig. 5-6, the gear seat assembly 20 includes two bearing seat plates 21 disposed in opposite directions and connected by a certain number of positioning shafts 22, the bearing seat plates 21 are provided with bearing mounting holes 21.1, a certain number of positioning shaft holes 21.2 and guard wheel shaft holes 21.3 at corresponding positions, two rails 23 are respectively disposed at corresponding positions inside the bearing seat plates 21, and a guide groove 23.1 is formed between the two rails 23.

As shown in fig. 7 to 9, the link assembly 30 includes two link plates 31 and two connecting plates 32, and a plurality of (three) rib plates 37 are disposed between the two link plates 31 and fixed by welding with the rib plates 37. A connecting plate pin shaft 33 is connected between the bottom parts of the rear sides of the two chain plates 31, two ends of the connecting plate pin shaft 33 protrude out of the chain plates 31 and extend into the guide groove 23.1, track rollers 35 are arranged at two ends of the connecting plate pin shaft 33, the two connecting plates 32 are respectively fixed at the top parts of the rear sides of the two chain plates 31 and are rotatably connected with the connecting plate pin shaft 33 of the adjacent chain link assembly 30, and at least one gear pin shaft 34 is arranged between the front sides of the two chain plates 31. The width of the guide groove 23.1 is 0.5mm to 1mm larger than the diameter of the track roller 35. In addition, a spacer bush is sleeved between the two connecting plates 32 on the connecting plate pin shaft 33.

Referring to fig. 10, the guard wheel assembly 40 includes a guard wheel shaft 41 and two guard wheels 42 thereon, two ends of the guard wheel shaft 41 are mounted in the guard wheel shaft holes 21.3 of the two bearing seat plates 21, and the two guard wheels 42 are located corresponding to the two link plates 31.

The gear assembly 10 is in transmission connection with the link assembly 30, the track roller 35 is located in the guide groove 23.1 so that the link assembly 30 moves along the direction of the guide groove 23.1 in the gear seat assembly 20, the guard wheel assembly 40 is located on the side of the guide groove 23.1/track 23 in the gear seat assembly 20 far away from the gear assembly 10, and the two guard wheels 42 can be respectively contacted with the two link plates 31 of the link assembly 30.

Example two: in the first embodiment, the number of the guard wheel assemblies 40 is three and the guard wheel assemblies are distributed up and down, as shown in fig. 1 and fig. 5 to 6.

In addition, as shown in fig. 7 to 9, the number of the pin gear sleeves 36 on the driving gear pin shaft 34 is four, the four pin gear sleeves 36 are respectively located on the inner side and the outer side of the two link plates 31, and four rows of pin gears 12 are arranged on the corresponding gear shaft 11.

The above description is only the specific embodiments of the present invention, but the structural features of the present invention are not limited thereto, the present invention can be used in similar products, and any person skilled in the art is in the field of the present invention, and all the changes or modifications made are covered by the claims of the present invention.

Claims (9)

1. A pin gear chain transmission mechanism is characterized in that: comprises a gear assembly (10), a gear seat assembly (20), a chain formed by connecting a certain number of chain link assemblies (30) end to end, and a guard wheel assembly (40);

the gear assembly (10) is in transmission connection with the chain link assembly (30), the chain link assembly (30) moves along the direction of the guide groove (23.1) in the gear seat assembly (20), and the protective wheel assembly (40) is located on one side, away from the guide groove (23.1) of the gear assembly (10), in the gear seat assembly (20) and can be in contact with the chain link assembly (30).

2. A pin and tooth chain drive as set forth in claim 1, wherein: the gear assembly (10) comprises a gear shaft (11) and a pin gear (12) arranged on the gear shaft, and roller bearings (13) are arranged on the gear shaft (11) on two sides of the pin gear (12);

the gear seat assembly (20) comprises two bearing seat plates (21) which are arranged in opposite directions and connected through a certain number of positioning shafts (22), bearing mounting holes (21.1) and a certain number of positioning shaft holes (21.2) are formed in corresponding positions on the bearing seat plates (21), two rails (23) are respectively arranged at corresponding positions on the inner sides of the bearing seat plates (21), and a guide groove (23.1) is formed between the two rails (23);

the chain link component (30) comprises two chain plates (31) and two connecting plates (32), a connecting plate pin shaft (33) is connected between the bottoms of the rear sides of the two chain plates (31), two ends of the connecting plate pin shaft (33) protrude out of the chain plates (31) and extend into the guide grooves (23.1), the two connecting plates (32) are fixed to the tops of the rear sides of the two chain plates (31) respectively and are rotatably connected with the connecting plate pin shaft (33) of the adjacent chain link component (30), and at least one gear pin shaft (34) is arranged between the front sides of the two chain plates (31).

3. A pin and tooth chain drive as set forth in claim 2, wherein: the protection wheel assembly (40) comprises a protection wheel shaft (41) and two protection wheels (42) arranged on the protection wheel shaft, the two bearing seat plates (21) are correspondingly provided with protection wheel shaft holes (21.3), and the two protection wheels (42) are correspondingly arranged on the two chain plates (31).

4. A pin and tooth chain drive as set forth in claim 3, wherein: the number of the guard wheel assemblies (40) is one or more.

5. A pin and toothed chain drive as set forth in claim 2, wherein: and two ends of the connecting plate pin shaft (33) are provided with track rollers (35).

6. A pin and tooth chain drive as claimed in claim 5, wherein: the width of the guide groove (23.1) is 0.5mm to 1mm larger than the diameter of the track roller (35).

7. A pin and tooth chain drive as set forth in claim 2, wherein: four pin gear sleeves (36) are arranged on the driving gear pin shaft (34), and four rows of pin gears (12) are arranged on the corresponding gear shaft (11).

8. The pin sprocket drive of claim 7, wherein: the four pin tooth sleeves (36) are respectively positioned on the inner side and the outer side of the two chain plates (31).

9. A pin and toothed chain drive as set forth in claim 2, wherein: a plurality of rib plates (37) are arranged between the two chain plates (31).

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