CN217784089U - Buffering and damping device - Google Patents
Buffering and damping device Download PDFInfo
- Publication number
- CN217784089U CN217784089U CN202221805875.5U CN202221805875U CN217784089U CN 217784089 U CN217784089 U CN 217784089U CN 202221805875 U CN202221805875 U CN 202221805875U CN 217784089 U CN217784089 U CN 217784089U
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- transmission shaft
- shaft
- lower transmission
- connecting shaft
- supporting
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Abstract
The utility model discloses a buffering damping device, including last transmission shaft, underdrive axle, connecting axle, spring, back shaft, round pin axle, go up the transmission shaft and pass through spill tooth and convex tooth meshing cooperation with the underdrive axle, drive earth boring machine normal rotation. When the drill bit is stuck due to sudden conditions such as stones and winding materials, the drill bit stops rotating, the upper transmission shaft and the lower transmission shaft are separated, the buffering and damping functions are achieved in the repeated separation and reset movement of the upper transmission shaft and the lower transmission shaft, and the personal safety of operators is guaranteed. The utility model has the advantages that: the utility model is simple in operation, convenient to use, the commonality is strong, is applicable to all hand-held type earth boring machines, avoids having improved earth boring machine's security because of the drill bit meets the danger that the proruption situation leads to.
Description
Technical Field
The utility model relates to a hand-held type earth boring machine field, in particular to buffering damping device.
Background
The earth boring machine is widely applied to the fields of agricultural planting, landscaping and the like. During operation, the engine provides power, the gear box reduces the speed and outputs the power to drive the drill bit to rotate, and the high-speed rotation of the drill bit is utilized to carry out pit digging operation on the ground. The traditional gear box and drill bit connection is mainly divided into two types. The other is that the output shaft of the gear box is directly connected with a drill bit connecting shaft, and when an emergency happens during drilling, the drill bit is suddenly blocked, and the engine still keeps running at the moment, so that the machine rotates reversely, and operators are easily injured. The other is that the gear box is connected with the drill connecting shaft through a buffering torsion spring, and when the gear box is in practical use, although the torsion spring can offset part of reaction force generated by drill clamping stagnation, the running trend of the reverse rotation of the engine cannot be changed.
Disclosure of Invention
In order to overcome the above problem, an object of the present invention is to provide a damping device, which has the following advantages: when the drilling machine works normally, the buffering and damping device can drive the drill bit to normally dig the pit; when the drill bit is stuck in an emergency, the buffering and damping device can complete the separation of the upper transmission shaft and the lower transmission shaft while the engine operates normally, so that the danger that the machine is reversed to throw an operator due to the sticking of the drill bit is avoided, and the safety of the earth boring machine is improved.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
the utility model provides a buffering damping device, includes last transmission shaft, lower transmission shaft, connecting axle, spring, back shaft, round pin axle, its characterized in that: the lower end face of the upper transmission shaft is provided with concave teeth, the upper end face of the lower transmission shaft is provided with convex teeth, the upper transmission shaft and the lower transmission shaft are connected in a meshed mode through the concave teeth and the convex teeth, and the side faces of the concave teeth and the convex teeth are provided with a first chamfer and a second chamfer; the supporting shaft is provided with a supporting boss, the spring is assembled on the supporting shaft, one end of the spring is limited by the supporting boss, and the other end of the spring is connected with the lower end face of the lower transmission shaft; a stepped hole is formed in the upper transmission shaft, a limiting boss is arranged at the upper part of the connecting shaft, the upper transmission shaft is connected with the connecting shaft through the stepped hole and the limiting boss, and the upper transmission shaft axially limits the connecting shaft; the lower transmission shaft is internally provided with a through hole, and the connecting shaft is arranged inside the lower transmission shaft; the inner part of the supporting shaft is provided with a hole, and the connecting shaft is arranged in the supporting shaft; the connecting shaft is provided with a first pin hole, the lower transmission shaft is provided with a second pin hole, the support shaft is provided with a third pin hole, the connecting shaft, the lower transmission shaft and the support shaft are connected through the pin shaft, and the axial stroke of the pin shaft in the second pin hole is larger than the meshing height of the convex teeth and the concave teeth.
According to the arrangement, the upper transmission shaft and the lower transmission shaft are meshed and matched through the concave teeth and the convex teeth, and the sides of the concave teeth and the convex teeth are in contact transmission to drive the earth boring machine to normally rotate. When the drill bit stops rotating due to clamping stagnation generated by sudden conditions of stones, winding materials and the like, the concave teeth of the upper transmission shaft generate tangential thrust at the chamfer angle relative to the convex teeth of the lower transmission shaft, when the axial thrust is greater than the elastic force of the spring, the upper transmission shaft is separated from the lower transmission shaft, the buffer and shock absorption functions are realized in the repeated separation and reset motion of the upper transmission shaft and the lower transmission shaft, and the personal safety of an operator is ensured.
As a preferred scheme of the utility model, the connecting axle is clearance fit with last transmission shaft, the connecting axle is rotatable in last transmission shaft.
Due to the arrangement, the smooth operation of the upper transmission shaft and the connecting shaft is ensured, and abrasion is avoided.
As a preferred scheme of the utility model, connecting axle and lower drive shaft are clearance fit, but the connecting axle endwise slip in the lower drive shaft.
So set up, guaranteed the unobstructed nature of operation of underdrive axle and connecting axle, avoided wearing and tearing.
The beneficial effects of the utility model are that: the utility model is simple in operation, convenient to use, the commonality is strong, is applicable to all hand-held type earth boring machines, avoids meetting the danger that the proruption situation leads to because of the drill bit, has improved earth boring machine's security.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is an internal structure schematic diagram of the upper transmission shaft of the present invention.
The numbering in the drawings illustrates:
1. an upper transmission shaft; 2. a stepped bore; 3. chamfering I; 4. concave teeth; 5. a limiting boss; 6. a connecting shaft; 7. a first pin hole; 8. chamfering II; 9. A convex tooth; 10. a pin hole II; 11. a lower transmission shaft; 12. a spring; 13. a pin hole III; 14. a support shaft; 15. supporting the boss; 16. and (7) a pin shaft.
Detailed Description
It should be noted that the following paragraphs may refer to terms of orientation, including but not limited to "upper, lower, left, right, front, rear, inner and outer" and the like, which are used to describe the orientation of the drawings as shown in the accompanying drawings.
It should also be noted that the terms "mounted," "assembled," "connected," and "coupled" are to be construed broadly unless otherwise expressly specified or limited. For example, the connection can be fixed connection or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the creation of the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 and 2, a buffering and damping device comprises an upper transmission shaft 1, a lower transmission shaft 11, a connecting shaft 6, a spring 12, a supporting shaft 14 and a pin shaft 16, wherein a concave tooth 4 is arranged on the lower end surface of the upper transmission shaft 1, a convex tooth 9 is arranged on the upper end surface of the lower transmission shaft 11, the upper transmission shaft 1 and the lower transmission shaft 11 are meshed and connected through the concave tooth 4 and the convex tooth 9, and a first chamfer 3 and a second chamfer 8 are arranged on the side surfaces of the concave tooth 4 and the convex tooth 9; the supporting shaft 14 is provided with a supporting boss 15, the spring 12 is assembled on the supporting shaft 14, one end of the spring 12 is limited through the supporting boss 15, and the other end of the spring is connected with the lower end face of the lower transmission shaft 11; a stepped hole 2 is formed in the upper transmission shaft 1, a limiting boss 5 is arranged at the upper part of the connecting shaft 6, the upper transmission shaft 1 is connected with the connecting shaft 6 through the stepped hole 2 and the limiting boss 5, and the upper transmission shaft 1 axially limits the connecting shaft 6; a through hole is formed in the lower transmission shaft 11, and the connecting shaft 6 is installed in the lower transmission shaft 11; a hole is formed in the supporting shaft 14, and the connecting shaft 6 is installed in the supporting shaft 14; the connecting shaft 6 is provided with a first pin hole 7, the lower transmission shaft 11 is provided with a second pin hole 10, the supporting shaft 14 is provided with a third pin hole 13, the connecting shaft 6, the lower transmission shaft 11 and the supporting shaft 14 are connected through a pin shaft 16, and the axial stroke of the pin shaft 16 in the second pin hole 10 is larger than the meshing height of the convex teeth 9 and the concave teeth 4. The connecting shaft 6 is in clearance fit with the upper transmission shaft 1, and the connecting shaft 6 can rotate in the upper transmission shaft 1. The connecting shaft 6 is in clearance fit with the lower transmission shaft 11, and the connecting shaft 6 can axially slide in the lower transmission shaft 11.
Specifically, the upper transmission shaft 1 and the lower transmission shaft 11 are meshed and matched through the concave teeth 4 and the convex teeth 9 to drive the earth boring machine to normally rotate. When the drill bit is blocked due to sudden conditions of stones, winding materials and the like, and the drill bit stops rotating, the concave teeth 4 of the upper transmission shaft 1 generate tangential thrust at the chamfer angle relative to the convex teeth 9 of the lower transmission shaft 11, when the axial thrust is greater than the elastic force of the spring, the upper transmission shaft 1 is separated from the lower transmission shaft 11, the buffer and shock absorption functions are realized in the repeated separation and reset movement of the upper transmission shaft 1 and the lower transmission shaft 11, and the personal safety of an operator is ensured.
The drawings and description above represent only preferred embodiments of the invention and are not intended to limit the invention, since numerous modifications and variations will readily occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (3)
1. The utility model provides a buffering damping device, includes last transmission shaft, bottom suspension axle, connecting axle, spring, back shaft, round pin axle, its characterized in that: the lower end face of the upper transmission shaft is provided with concave teeth, the upper end face of the lower transmission shaft is provided with convex teeth, the upper transmission shaft and the lower transmission shaft are connected in a meshed mode through the concave teeth and the convex teeth, the side face of the concave teeth is provided with a first chamfer, and the side face of the convex teeth is provided with a second chamfer; the supporting shaft is provided with a supporting boss, the spring is assembled on the supporting shaft, one end of the spring is limited by the supporting boss, and the other end of the spring is connected with the lower end face of the lower transmission shaft; a step hole is formed in the upper transmission shaft, a limiting boss is arranged at the upper part of the connecting shaft, the upper transmission shaft is connected with the connecting shaft through the step hole and the limiting boss, and the upper transmission shaft axially limits the connecting shaft; the lower transmission shaft is internally provided with a through hole, and the connecting shaft is arranged inside the lower transmission shaft; the inner part of the supporting shaft is provided with a hole, and the connecting shaft is arranged in the supporting shaft; the connecting shaft is provided with a first pin hole, the lower transmission shaft is provided with a second pin hole, the support shaft is provided with a third pin hole, the connecting shaft, the lower transmission shaft and the support shaft are connected through the pin shaft, and the axial stroke of the pin shaft in the second pin hole is larger than the meshing height of the convex teeth and the concave teeth.
2. A shock absorbing unit as set forth in claim 1, wherein: the connecting shaft is in clearance fit with the upper transmission shaft, and the connecting shaft can rotate in the upper transmission shaft.
3. A shock absorbing unit as set forth in claim 1, wherein: the connecting shaft is in clearance fit with the lower transmission shaft, and the connecting shaft can axially slide in the lower transmission shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221805875.5U CN217784089U (en) | 2022-07-14 | 2022-07-14 | Buffering and damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221805875.5U CN217784089U (en) | 2022-07-14 | 2022-07-14 | Buffering and damping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217784089U true CN217784089U (en) | 2022-11-11 |
Family
ID=83939291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221805875.5U Active CN217784089U (en) | 2022-07-14 | 2022-07-14 | Buffering and damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217784089U (en) |
-
2022
- 2022-07-14 CN CN202221805875.5U patent/CN217784089U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |