CN220823678U - Pit digger for planting tree - Google Patents

Abstract

The utility model discloses a pit digger for planting trees, which comprises: the driving machine is in transmission connection with a main shaft, and a spiral blade is fixed on the main shaft; the base is fixed with the driving machine; the two ends of the guide post are respectively fixed with the base and the closed end of the limiting pipe; the rotating pipe with the mounting hole on the side wall is limited between the limiting pipe and the base; the cylindrical block is provided with a through hole and a limiting groove, and a guide post is penetrated in the through hole; the first spring is respectively abutted with the cylindrical block and the base; the sleeve is fixed with the rotary tube; one end of the pull rod can be inserted into the limit groove, and the other end of the pull rod is connected with the handle; the retainer ring is fixed with the pull rod; the pull rod is penetrated on the inner side of the second spring, and two ends of the pull rod are respectively abutted with the sleeve and the check ring. When the main shaft and the helical blades do not rotate to drive the machine to rotate, the rotating handle can pull the pull rod to move, the rotating pipe cannot be in transmission connection with the cylindrical block, and the rotating pipe is in a flexible rotating state, so that a worker can easily and repeatedly hold the handle, and control over the pit digger is restored.

Description

Pit digger for planting tree

Technical Field

The utility model relates to the field of textile products on beds, in particular to a pit digger for planting trees.

Background

Before tree planting, a pit digger for tree planting is needed to be used for pit digging operation, so that the subsequent tree planting is facilitated.

The types of earth boring machines are roughly classified into two types: the pit digger is driven by an engineering vehicle, has high pit digging efficiency and large pit body, is not suitable for tree planting in small areas, and affects the pit digging efficiency because the engineering vehicle is inconvenient to adjust the posture; the other is a small-sized pit digger which is controlled by manpower, and the pit digger is mainly composed of two parts, namely a digging head and a driving machine, wherein the driving machine is generally an oil engine, a handle is arranged on the driving machine, when the pit digger is used, a worker holds the handle to dig pits, when the digging head is blocked or the worker cannot hold the handle, the situation that the digging head does not move to drive the machine to rotate is likely to occur, and because the handle also rotates rapidly along with the driving machine, the worker is difficult to approach the pit digger, and the pit digger is easy to lose control.

Therefore, how to provide a planting tree hole digger, which can overcome the above problems, is a problem that a person skilled in the art needs to solve.

Disclosure of utility model

In view of this, the present utility model provides a tree planting hole digger.

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

A tree planting hole digger comprising: the device comprises a driving machine, a main shaft, a helical blade, a disengaging mechanism and a handle, wherein an output shaft of the driving machine is coaxially fixed with the main shaft, and the helical blade is fixedly sleeved on the outer side wall of the main shaft in a coaxial manner; the disengaging mechanism comprises a base, a limiting pipe, a guide column, a rotating pipe, a cylindrical block, a first spring, a sleeve, a pull rod, a check ring and a second spring, wherein the base is fixed with the driving machine; one end of the limiting pipe is closed and is coaxially arranged with the main shaft, two ends of the guide post are respectively fixed with the base and the inner wall of the closed end of the limiting pipe, and the length direction of the guide post is parallel to the axial lead of the main shaft; the rotating pipe is limited between the limiting pipe and the base, the inner side wall of the rotating pipe is aligned with the inner side wall of the limiting pipe, and a plurality of mounting holes are uniformly formed in the circumferential direction of the side wall of the rotating pipe; the end part of the cylindrical block is provided with a through hole, the guide post is tightly penetrated in the through hole in a sliding way, the guide post can drive the cylindrical block to rotate, the outer side wall of the cylindrical block can be in sliding butt joint with the inner side wall of the rotary pipe, and a plurality of limit grooves are uniformly formed in the circumferential direction on the side wall of the cylindrical block; the first spring is coaxially arranged with the main shaft, the guide post is arranged on the inner side of the first spring, and two ends of the first spring are respectively abutted with the cylindrical block and the base; the opening at one end of the sleeve is closed, the opening end of the sleeve is fixed with the outer side wall of the rotary pipe, and the hole wall of the mounting hole is aligned with the inner wall of the sleeve; one end of the pull rod can be inserted into the limit groove after passing through the closed end of the sleeve, the other end of the pull rod is connected with the handle, and the pull rod can be arranged between the limit groove and the base; the retainer ring and the pull rod are coaxially fixed and can be limited at the inner side of the mounting hole; the pull rod is arranged on the inner side of the second spring in a penetrating mode, and two ends of the second spring are respectively abutted to the closed end of the sleeve and the check ring.

Compared with the prior art, the utility model discloses a tree planting pit digger, the main shaft and the spiral blade do not turn to the driving machine to rotate when the spiral blade is blocked or a worker cannot grip the handle by installing the handle and the disengaging mechanism on the driving machine.

Preferably, the disengaging mechanism further comprises a limiting ring, the base is plate-shaped, a side plate surface of the base, which is far away from the driving machine, is vertically fixed with the guide post and the limiting ring, the outer side wall of the rotating pipe is in sliding butt with the inner side wall of the limiting ring, and one end of the rotating pipe, which is far away from the base, is in sliding butt with the end wall of the opening end of the limiting pipe. The limiting ring can further limit the rotating pipe, and the rotating pipe can reliably rotate.

Preferably, the disengaging mechanism further comprises a baffle ring and a safety tube with both ends closed, and the baffle ring is coaxially fixed with the outer side wall of the sleeve; one closed end of the safety tube is provided with a hole in the middle and is sleeved with the sleeve in a sliding manner, and the other closed end of the safety tube and one end of the pull rod, which is far away from the cylindrical block, are coaxially fixed; the baffle ring is limited on the inner side of the safety tube, the baffle ring can be abutted with the inner wall of the safety tube, which is close to one closed end of the mounting hole, and the handle is fixed with one end, which is far away from the rotating tube, of the safety tube. The handle can not be separated from the rotary pipe, and the moving travel of the pull rod is limited.

Preferably, the cross sections of the guide post and the through hole are polygonal. The guide post can reliably drive the cylindrical block to rotate.

Preferably, the releasing mechanism further comprises a push rod, the closed end of the limiting pipe is provided with a hole and is penetrated with the push rod, one end of the push rod is arranged on the outer side of the limiting pipe, and the other end of the push rod can be abutted with the cylindrical block at one end far away from the base. The limit groove can be in plug connection with the pull rod.

Preferably, the card removing mechanism further comprises a pressing plate, the ejector rods are provided with a plurality of pressing plates, and one end, away from the cylindrical block, of each ejector rod is fixed with one pressing plate. The cylindrical block can be reliably pushed by the ejector rod.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is an overall isometric view of a tree planting hole digger;

FIG. 2 is a front view of a tree planting hole digger;

FIG. 3 is a top view of a tree planting hole digger;

FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3;

FIG. 5 is a partial enlarged view at B in FIG. 4;

FIG. 6 is a partial isometric view of a tree planting hole digger;

fig. 7 is a partial isometric view of a tree mover.

In the figure:

The device comprises a driving machine 1, a main shaft 2, a helical blade 3, a base 4, a limit pipe 5, a guide post 6, a rotary pipe 7, a cylindrical block 8, a limit groove 80, a first spring 9, a sleeve pipe 10, a pull rod 11, a retainer ring 12, a second spring 13, a limit ring 14, a baffle ring 15, a safety pipe 16, a push rod 17, a pressing plate 18 and a handle 19.

Detailed Description

The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model discloses a planting tree pit digger, wherein a handle 19 and a disengaging mechanism are arranged on a driver 1, when a helical blade 3 is blocked or a worker fails to hold the handle 19, a main shaft 2 and the helical blade 3 do not rotate the driver 1, under the condition, the rotating handle 19 pulls a pull rod 11 to move due to the action of centrifugal force, the pull rod 11 is disconnected with a limit groove 80 due to the disengaging mechanism, meanwhile, a first spring 9 pushes a cylindrical block 8 to move in a direction far away from a base 4, at the moment, a rotary pipe 7 cannot be in transmission connection with the cylindrical block 8, and the rotary pipe 7 is in a flexible rotation state, so that the worker can easily and repeatedly hold the handle 19, and the control of the pit digger is restored;

The design of the second spring 13, when the pit digger is in a normal working state, the pull rod 11 can be reliably spliced with the limit groove 80, and meanwhile, when the subsequent cylindrical block 8 is pressed down by the ejector rod 17 to move, the second spring 13 can push the pull rod 11 to be spliced with the limit groove 80 again;

By providing the safety tube 16 and the stopper ring 15, the moving distance of the pull rod 11 can be limited, and the handle 19 is not separated from the rotary tube 7;

the limiting groove 80 and the pull rod 11 can be restored to be spliced again by designing the ejector rod 17 and the pressing plate 18; the pit digger is simple and reliable in structure, and workers can control the pit digger reliably.

Examples

Referring to fig. 1-7, which are schematic views of whole and partial structures of an embodiment of the present utility model, the present utility model specifically discloses a tree planting pit digger, comprising: a driving machine 1, a main shaft 2, a helical blade 3, a disengaging mechanism and a handle 19;

The output shaft of the driver 1 is coaxially fixed with the main shaft 2, the outer side wall of the main shaft 2 is coaxially sleeved with the inherent helical blade 3, the main shaft 2 is conical, the large caliber end of the main shaft is fixedly connected with the output shaft of the driver 1 through bolts, the driver 1 can be an internal combustion engine or a reducing motor, the driver 1 drives the main shaft 2 to rotate, the main shaft 2 drives the helical blade 3 to rotate, and the helical blade 3 applies pressure downwards while rotating, so that pit digging operation is performed;

The card releasing mechanism comprises a base 4, a guide post 6, a limiting pipe 5, a rotating pipe 7, a cylindrical block 8, a first spring 9, a sleeve 10, a pull rod 11, a check ring 12 and a second spring 13,

The base 4 is fixed with one end of the driving machine 1 far away from the main shaft 2 in a bolt connection mode;

One end of the guide post 6 is fixed with the base 4, the length direction of the guide post 6 is parallel to the axial line of the main shaft 2, and the section of the guide post 6 cannot be circular;

The outer contour of the section is a round limiting pipe 5, one end of which is open and the other end is closed, and the limiting pipe is coaxially arranged with the main shaft 2, and one end of the guide column 6, which is far away from the base 4, is fixed with the inner wall of the closed end of the limiting pipe 5;

The rotary tube 7 with a circular outer contour of the section is limited between the limiting tube 5 and the base 4, the rotary tube 7 and the limiting tube 5 are coaxially arranged, the inner side walls of the two are aligned, two ends of the rotary tube 7 are respectively in sliding abutting joint with the end wall of the limiting tube 5 and the base 4, a plurality of mounting holes penetrating through the inside of the rotary tube 7 are uniformly formed in the circumferential direction on the side wall of the rotary tube 7, and two mounting holes are formed in the embodiment;

The cylindrical block 8 is coaxially arranged with the main shaft 2, a through hole is formed in the end part of the cylindrical block 8, the guide post 6 is penetrated through the through hole in a sliding manner, the through hole is matched with the guide post 6 in shape, the guide post 6 can drive the cylindrical block 8 to rotate, meanwhile, the cylindrical block 8 can slide along the length direction of the guide post 6, the outer side wall of the cylindrical block 8 can be in sliding abutting joint with the inner side wall of the rotary tube 7, and a plurality of limiting grooves 80 are uniformly formed in the circumferential direction on the side wall of the cylindrical block 8;

The first spring 9 is coaxially arranged with the main shaft 2, two ends of the first spring 9 are respectively abutted with the cylindrical block 8 and the base 4, and the first spring 9 can be abutted against the cylindrical block 8;

The outer contour of the section is a circular sleeve 10, one end of the sleeve 10 is open, the other end of the sleeve is closed, the open end of the sleeve 10 is fixed with the outer side wall of the rotary pipe 7, the pipe center line of the sleeve 10 is vertical to and coplanar with the pipe center line of the rotary pipe 7, and the hole wall of the mounting hole is aligned with the pipe inner wall of the sleeve 10;

One end of the pull rod 11 can be inserted into the limit groove 80 after sequentially passing through the closed end of the sleeve 10, the open end of the sleeve 10 and the mounting hole, and the other end of the pull rod 11 is fixed with the handle 19, and the handle 19 in the application is provided with two;

In the pit digging process, when the driver 1 is not stopped, but the hands of a worker are separated from the handle 19, the main shaft 2 is blocked and does not rotate, the driver 1 drives the handle 19 to rotate, the handle 19 pulls the pull rod 11 due to the action of centrifugal force, when the pull rod 11 is separated from the limit groove 80, the first spring 9 pushes the cylindrical block 8 to move in a direction away from the base 4, and the pull rod 11 at the moment can be arranged between the limit groove 80 and the base 4;

The retainer ring 12 is limited at the inner side of the mounting hole and is coaxially fixed with the pull rod 11;

the pull rod 11 is penetrated on the inner side of the second spring 13, two ends of the second spring 13 are respectively abutted with the closed end of the sleeve 10 and the retainer ring 12, and the second spring 13 can be abutted against the retainer ring 12, so that one end of the pull rod 11 can be reliably inserted into the limit groove 80 in a normal working state of the pit excavator.

Further specifically, the disengaging mechanism further comprises a limiting ring 14, the base 4 is plate-shaped, a guide post 6 and the limiting ring 14 are vertically fixed on one side plate surface of the base, which is far away from the driving machine 1, the outer side wall of the rotary tube 7 is in sliding abutting joint with the inner side wall of the limiting ring 14, and one end, which is far away from the base 4, of the rotary tube 7 is in sliding abutting joint with the end wall of the opening end of the limiting tube 5; the limiting ring 14 can further limit the rotating pipe 7, so that the rotating pipe 7 can be stably arranged and rotated.

Further specifically, the disengaging mechanism further comprises a baffle ring 15 and a safety tube 16 with both ends closed, wherein the baffle ring 15 is coaxially fixed with the outer side wall of the sleeve 10; one closed end of the safety tube 16 is provided with a hole in the middle and is sleeved with the sleeve 10 in a sliding way, and the other closed end of the safety tube 16 is coaxially fixed with one end of the pull rod 11 far away from the cylindrical block 8; the baffle ring 15 is limited on the inner side of the safety tube 16, the baffle ring 15 can be abutted with the inner wall of the safety tube 16, which is close to one closed end of the mounting hole, and the handle 19 is fixed with one end of the safety tube 16, which is far away from the rotary tube 7; the stopper ring 15 can limit the moving distance of the tie rod 11.

Further, the sections of the guide post 6 and the through hole are polygonal, and in this embodiment, the sections of the guide post 6 and the through hole are rectangular, and the guide post 6 can reliably drive the cylindrical block 8 to rotate.

Further specifically, the card removing mechanism further comprises a push rod 17, the closed end of the limiting pipe 5 is provided with a hole and is penetrated with the push rod 17, one end of the push rod 17 is arranged at the outer side of the limiting pipe 5, and the other end of the push rod 17 can be abutted with one end, far away from the base 4, of the cylindrical block 8; when the pull rod 11 is separated from the limit groove 80, the push rod 17 is pressed and the rotary tube 7 is rotated, so that the pull rod 11 can be reinserted into the limit groove 80.

Further specifically, the card releasing mechanism further comprises a pressing plate 18, the ejector rods 17 are provided with a plurality of ejector rods, one ends, far away from the cylindrical blocks 8, of the plurality of ejector rods 17 are fixed with one pressing plate 18, the ejector rods 17 can reliably push the cylindrical blocks 8 to move, the pressing plate 18 is designed, workers can press conveniently, and meanwhile the plurality of ejector rods 17 can synchronously act.

In use, one or two workers hold the two handles 19 and ensure as much as possible that the main shaft 2 is arranged vertically, and then the drive machine 1 is started, the handles 19 are depressed, and the helical blades 3 are moved down and the pit is excavated.

When the screw blade 3 hits a hard object in the process of moving down or the worker does not hold the handle 19, the screw blade 3 may be blocked, the driver 1 starts to rotate, and the driver 1 drives the handle 19 to rotate;

Due to the arrangement of the clamping mechanism, when the handle 19 rotates, the handle 19 pulls the safety tube 16 due to the action of centrifugal force, so that the pull rod 11 is driven to move, the spring II 13 is compressed at the moment, the spring I9 pushes the cylindrical block 8 to move away from the base 4 when the pull rod 11 is not inserted into the limit groove 80 any more, the base 4, the guide post 6, the limit tube 5 and the cylindrical block 8 still rotate along with the driving machine 1 at the moment, the rotary tube 7 is in a flexible rotating state due to the fact that the rotary tube 7 is separated from the cylindrical block 8, and a worker can easily grip the handle 19 again at the moment;

After the worker grasps the handle 19 again, the worker pulls the handle 19 in a direction away from the driving machine 1 so that the end of the pull rod 11 near the guide post 6 moves to the inside of the mounting hole in order to facilitate the downward movement of the cylindrical block 8; then, another worker presses the pressing plate 18 downward, at this time, the rotating cylindrical block 8 moves downward, and after the cylindrical block 8 moves downward, the pulling of the handle 19 is stopped, and since the second spring 13 is provided, the second spring 13 pushes the pull rod 11 and reinserts it into the limit groove 80, at this time, the pit digging operation or the stop can be continued.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. A tree planting pit digger, comprising: the device comprises a driving machine (1), a main shaft (2), a helical blade (3), a disengaging mechanism and a handle (19), wherein an output shaft of the driving machine (1) is coaxially fixed with the main shaft (2), and the helical blade (3) is coaxially sleeved on the outer side wall of the main shaft (2); the disengaging mechanism comprises a base (4), a limiting pipe (5), a guide column (6), a rotating pipe (7), a cylindrical block (8), a first spring (9), a sleeve (10), a pull rod (11), a retainer ring (12) and a second spring (13), wherein the base (4) is fixed with the driving machine (1); one end of the limiting pipe (5) is closed and is coaxially arranged with the main shaft (2), two ends of the guide column (6) are respectively fixed with the base (4) and the inner wall of the closed end of the limiting pipe (5), and the length direction of the guide column (6) is parallel to the axial lead of the main shaft (2); the rotating pipe (7) is limited between the limiting pipe (5) and the base (4), the inner side wall of the rotating pipe (7) is aligned with the inner side wall of the limiting pipe (5), and a plurality of mounting holes are uniformly formed in the circumferential direction of the side wall of the rotating pipe (7); the end part of the cylindrical block (8) is provided with a through hole, the guide column (6) is tightly penetrated in the through hole in a sliding way, the outer side wall of the cylindrical block (8) can be in sliding butt joint with the inner side wall of the rotary pipe (7), and a plurality of limit grooves (80) are uniformly formed in the circumferential direction on the side wall of the cylindrical block (8); the first spring (9) is coaxially arranged with the main shaft (2) and the guide column (6) is arranged on the inner side of the first spring, and two ends of the first spring (9) are respectively abutted with the cylindrical block (8) and the base (4); the sleeve (10) is open at one end and closed at the other end, the open end of the sleeve is fixed with the outer side wall of the rotary tube (7), and the hole wall of the mounting hole is aligned with the inner wall of the sleeve (10); one end of the pull rod (11) can be inserted into the limit groove (80) after passing through the closed end of the sleeve (10), the other end of the pull rod (11) is connected with the handle (19), and the pull rod (11) can be arranged between the limit groove (80) and the base (4); the retainer ring (12) and the pull rod (11) are coaxially fixed and can be limited at the inner side of the mounting hole; the pull rod (11) is arranged on the inner side of the second spring (13) in a penetrating mode, and two ends of the second spring (13) are respectively abutted to the closed end of the sleeve (10) and the check ring (12).

2. The tree planting pit digger according to claim 1, wherein the clip removing mechanism further comprises a limiting ring (14), the base (4) is plate-shaped, a side plate surface of the base, which is far away from the driving machine (1), is vertically fixed with the guide post (6) and the limiting ring (14), the outer side wall of the rotary pipe (7) is in sliding abutting joint with the inner side wall of the limiting ring (14), and one end, which is far away from the base (4), of the rotary pipe (7) is in sliding abutting joint with the end wall of the opening end of the limiting pipe (5).

3. A tree-planting pit digger according to claim 1, characterized in that the seizing-off mechanism further comprises a stop ring (15) and a safety tube (16) with both ends closed, the stop ring (15) being coaxially fixed with the outer side wall of the sleeve (10); one closed end of the safety tube (16) is provided with a hole in the middle and is sleeved with the sleeve (10) in a sliding manner, and the other closed end of the safety tube (16) and one end, far away from the cylindrical block (8), of the pull rod (11) are coaxially fixed; the baffle ring (15) is limited on the inner side of the safety tube (16), the baffle ring (15) can be abutted with the inner wall of the safety tube (16) close to one closed end of the mounting hole, and the handle (19) and one end of the safety tube (16) far away from the rotary tube (7) are fixed.

4. A tree mover according to claim 1, characterized in that the cross-section of the guide post (6) and the through hole is polygonal.

5. The tree planting pit digger according to claim 1, wherein the card removing mechanism further comprises a push rod (17), the closed end of the limiting pipe (5) is provided with a hole and is provided with the push rod (17) in a penetrating mode, one end of the push rod (17) is arranged outside the limiting pipe (5), and the other end of the push rod (17) can be abutted with one end, away from the base (4), of the cylindrical block (8).

6. A tree mover according to claim 5, wherein the card releasing mechanism further comprises a pressing plate (18), the ejector pins (17) are provided in plural, and one end of the plurality of ejector pins (17) away from the cylindrical block (8) is fixed to one of the pressing plates (18).