阅读说明：本技术 一种便携式可变径环绕掘坑机 (Portable variable-diameter surrounding pit digging machine ) 是由 郭利 丁守宝 黄祥 章彬 于 2019-09-17 设计创作，主要内容包括：本发明公开了一种便携式可变径环绕掘坑机,包括有支撑架,所述支撑架的两端分别连接有工作把,所述支撑架的中部架设有变速变径机构,所述变速变径机构的底部两侧分别连接有动力分配机构、变向输送机构,所述变速变径机构连接有变径档杆,所述支撑架的四角分别活动连接有垂直于支撑架的固定插针；提出一种新的可变直径的掘坑设备,本发明产品结构合理,便于控制,其具有可变径挖掘不同大小的坑道适应性强,隐藏式刀具安全性强,输送式出土覆土快。(The invention discloses a portable variable-diameter surrounding pit digging machine which comprises a support frame, wherein two ends of the support frame are respectively connected with a working handle, a variable-speed and variable-diameter mechanism is erected in the middle of the support frame, two sides of the bottom of the variable-speed and variable-diameter mechanism are respectively connected with a power distribution mechanism and a direction-changing conveying mechanism, the variable-speed and variable-diameter mechanism is connected with a variable-diameter gear rod, and four corners of the support frame are respectively and movably connected with fixed contact pins vertical to the support frame; the invention provides a novel variable-diameter pit digging device which is reasonable in structure and convenient to control, has the advantages of strong adaptability to variable-diameter dug tunnels with different sizes, strong safety of a hidden cutter and quick conveying type unearthing and earthing.)

1. The utility model provides a portable reducing encircles machine of digging a pit, includes the support frame, the both ends of support frame are connected with work handle, its characterized in that respectively: the middle part of the support frame is provided with a variable-speed and variable-diameter mechanism, two sides of the bottom of the variable-speed and variable-diameter mechanism are respectively connected with a power distribution mechanism and a direction-changing conveying mechanism, the variable-speed and variable-diameter mechanism is connected with a variable-diameter gear lever, and four corners of the support frame are respectively and movably connected with fixed contact pins vertical to the support frame; wherein:

the variable speed reducing mechanism comprises a main frame, wherein a connecting slide block, a pull rod frame, a bearing, a surrounding variable speed gear set and an engine are respectively arranged on the upper surface of the main frame from bottom to top, an output shaft is connected to the bottom of the engine, a transfer transmission gear connected with the transmission upper gear set in the surrounding variable speed gear set is arranged on the upper portion of the output shaft, the transmission upper gear set transmits a transmission lower gear disc in the surrounding variable speed gear set through the transmission middle gear set in the surrounding variable speed gear set, the transmission lower gear disc is connected with a frame barrel arranged on the upper portion of the main frame, the output shaft penetrates through the frame barrel and penetrates into the main frame, the bearing, the pull rod frame and the connecting slide block are respectively arranged on the frame barrel of the main frame, the pull rod frame is fixedly connected with the connecting slide block, one end of the pull rod frame is connected with a pull, one end of the connecting sliding block is connected with the top of a reversing rod in the power distribution mechanism, a synchronous belt transmission mechanism is arranged on the outer side face, opposite to the power distribution mechanism, of the main frame, the synchronous belt transmission mechanism is connected with a transmission bevel gear arranged at the bottom of an output shaft through a bevel gear connected with the end of a transmission connecting rod, a conveying belt transmission mechanism is arranged on one side face of the main frame, and the conveying belt transmission mechanism is in transmission connection with a roller shaft at one end of a conveying belt in the turning conveying mechanism through;

the power distribution mechanism comprises a power distribution box, a reversing rod is vertically arranged in the power distribution box, a worm and gear reversing speed reducer is arranged at the top of the reversing rod, and a reversing bevel gear set is connected to the lower part of the reversing rod;

diversion conveying mechanism is including the transport support frame of locating the main frame bottom, a side of carrying the support frame is equipped with the supporting shoe, the spline transfer line has been erect between supporting shoe and the main frame, the one end of spline transfer line stretch out the main frame and be connected with the spline drive wheel among the synchronous belt drive mechanism, be equipped with the helical gear on the spline transfer line, the bottom of carrying the support frame is equipped with the drive screw, and a tip of drive screw stretches out and carries the support frame outer and be connected with reversing bevel gear, it has the reversing gear case to erect between drive screw and the spline transfer line, be equipped with flood dragon cutter in the reversing gear case, the top of flood dragon cutter is equipped with the drive helical gear with helical gear engaged with, be.

2. A portable variable diameter surrounding earth boring machine as claimed in claim 1, wherein: the top of the pull rod is provided with a convex block with a convex edge provided with teeth, the reducing stop rod is connected with the convex block through a movable gear, and the movable gear is meshed with the teeth arranged on the convex edge of the convex block.

3. A portable variable diameter surrounding earth boring machine as claimed in claim 1, wherein: the inner sides of the two ends of the supporting frame are movably provided with sliding pressing plates, each sliding pressing plate comprises two movable bases, a connecting rod is arranged between the two movable bases, and arc-shaped plates are arranged on the movable bases.

4. A portable variable diameter surrounding earth boring machine as claimed in claim 1, wherein: and the fixed contact pin is sleeved with a suspension spring.

5. A portable variable diameter surrounding earth boring machine as claimed in claim 1, wherein: a flood dragon cutter protective shell is arranged at the bottom of the reversing gear box.

6. A portable variable diameter surrounding earth boring machine as claimed in claim 1, wherein: and the working handle is provided with an accelerator controller.

7. A portable variable diameter surrounding earth boring machine as claimed in claim 1, wherein: the reversing bevel gear is positioned between two bevel gears of the reversing bevel gear set.

Technical Field

The invention relates to the technical field of planting tree pit digging machinery, in particular to a portable variable-diameter surrounding pit digging machine.

Background

At present, many ornamental tree seedlings in landscaping are planted by adopting a transfer mode, pits are dug by adopting an excavator in a place where the path is convenient, manual pit digging is generally adopted, labor is wasted, the efficiency is low, the consumption is high in the actual operation, the dug tree pits are not standard, then a manual spiral pit digging device is provided, the pits are dug by adopting a manual rocker arm to act on an auger, the digging is still inconvenient, the digging efficiency is low, the existing common pit digging machinery is mainly characterized in that the auger with a large diameter is simply and directly connected with an engine, the engine drives the auger to rotate to dig downwards, but a working cutter is completely exposed, the digging speed is high but dangerous, the condition that a cutter clamping machine cannot stop injuring people often occurs, and the auger of one type can only dig the tree pit with a fixed size and depth, and time and labor are wasted when the auger is replaced, and multiple groups of augers are needed to be replaced, but the pit digging through a larger auger needs higher power, the power of an engine obviously cannot be effectively adapted, and the engine cannot be driven, so that the application scene of tree pit size change is difficult to adapt.

Disclosure of Invention

The invention provides a novel variable-diameter digging device, which has the advantages of reasonable structure, convenient control, firmness, durability and gradual operation, reduces digging resistance, saves operation cost and improves planting quality by continuously digging the digging pit from the center to the periphery, has the function of variable diameter, can dig pits with different sizes, has strong adaptability, strong safety of hidden cutters, and fast conveying type soil discharging and covering, and effectively prevents the problem that soil is scattered all around during digging.

The invention is realized by the following technical means:

a portable variable-diameter surrounding pit digging machine comprises a support frame, wherein two ends of the support frame are respectively connected with a working handle, a variable-speed and variable-diameter mechanism is erected in the middle of the support frame, two sides of the bottom of the variable-speed and variable-diameter mechanism are respectively connected with a power distribution mechanism and a turning conveying mechanism, the variable-speed and variable-diameter mechanism is connected with a variable-diameter gear lever, and four corners of the support frame are respectively movably connected with fixed contact pins vertical to the support frame; wherein:

the variable speed reducing mechanism comprises a main frame, wherein a connecting slide block, a pull rod frame, a bearing, a surrounding variable speed gear set and an engine are respectively arranged on the upper surface of the main frame from bottom to top, an output shaft is connected to the bottom of the engine, a transfer transmission gear connected with the transmission upper gear set in the surrounding variable speed gear set is arranged on the upper portion of the output shaft, the transmission upper gear set transmits a transmission lower gear disc in the surrounding variable speed gear set through the transmission middle gear set in the surrounding variable speed gear set, the transmission lower gear disc is connected with a frame barrel arranged on the upper portion of the main frame, the output shaft penetrates through the frame barrel and penetrates into the main frame, the bearing, the pull rod frame and the connecting slide block are respectively arranged on the frame barrel of the main frame, the pull rod frame is fixedly connected with the connecting slide block, one end of the pull rod frame is connected with a pull, one end of the connecting sliding block is connected with the top of a reversing rod in the power distribution mechanism, a synchronous belt transmission mechanism is arranged on the outer side face, opposite to the power distribution mechanism, of the main frame, the synchronous belt transmission mechanism is connected with a transmission bevel gear arranged at the bottom of an output shaft through a bevel gear connected with the end of a transmission connecting rod, a conveying belt transmission mechanism is arranged on one side face of the main frame, and the conveying belt transmission mechanism is in transmission connection with a roller shaft at one end of a conveying belt in the turning conveying mechanism through;

the power distribution mechanism comprises a power distribution box, a reversing rod is vertically arranged in the power distribution box, a worm and gear reversing speed reducer is arranged at the top of the reversing rod, and a reversing bevel gear set is connected to the lower part of the reversing rod;

diversion conveying mechanism is including the transport support frame of locating the main frame bottom, a side of carrying the support frame is equipped with the supporting shoe, the spline transfer line has been erect between supporting shoe and the main frame, the one end of spline transfer line stretch out the main frame and be connected with the spline drive wheel among the synchronous belt drive mechanism, be equipped with the helical gear on the spline transfer line, the bottom of carrying the support frame is equipped with the drive screw, and a tip of drive screw stretches out and carries the support frame outer and be connected with reversing bevel gear, it has the reversing gear case to erect between drive screw and the spline transfer line, be equipped with flood dragon cutter in the reversing gear case, the top of flood dragon cutter is equipped with the drive helical gear with helical gear engaged with, be.

Preferably, the top of the pull rod is provided with a convex block with a convex edge provided with teeth, the reducing stop rod is connected with the convex block through a movable gear, and the movable gear is meshed with the teeth arranged on the convex edge of the convex block to realize the ascending and descending of the movable adjusting pull rod.

Preferably, the inner sides of the two ends of the supporting frame are movably provided with sliding pressing plates, each sliding pressing plate comprises two movable bases, a connecting rod is arranged between the two movable bases, each movable base is provided with an arc-shaped plate, the sliding pressing plates are moved, the arc-shaped plates press the fixed contact pins, the fixed contact pins can be pushed together, and the fixed contact pins cannot move up and down when a pit is dug.

Preferably, the fixed contact pin is sleeved with a suspension spring, so that the device is supported, and the digging effect can be conveniently controlled when a sliding pressure plate is not used.

Preferably, the bottom of reversing gear case is equipped with flood dragon cutter protective housing, can effectively protect flood dragon cutter to prevent to dig hole earth scattered.

Preferably, an accelerator controller is arranged on one working handle, so that the speed change and the pit digging efficiency can be effectively controlled.

The invention has the beneficial effects that: the invention provides a new variable diameter digging device, which has reasonable structure and convenient control, has the function of diameter variation, can dig tunnels with different sizes, has strong safety of a hidden cutter, and is quick in conveying type soil removal and soil covering, changes the mode of manually digging pits and digging pits by adopting a fixed giant cutter into a small-sized portable digging device with variable diameter and movable, the digging size of the portable digging device can far exceed the digging size of the existing digging machine under the same power machine, and can realize the digging of tunnels with different sizes and shapes, such as a columnar pit, a conical pit, a round platform pit, a ring pit and the like, the size of the dug pits is standard, the mode of adding a protective shell by adopting a small auger cutter is adopted, so that the cutter is hidden in the portable digging device, the rotary cutter can be prevented from hurting people, the portable digging device has higher safety, and the stable structure of four guide post contact pins can be stably inserted into the soil during working, the problem that the machine cannot be controlled out of control due to misoperation can be avoided, the operation cost is greatly reduced, and the planting quality is improved.

Description of the drawings:

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic view of a portion of the present invention;

FIG. 3 is a schematic view of a portion of the present invention;

FIG. 4 is a schematic view of a portion of the present invention;

FIG. 5 is a schematic view of a portion of the present invention;

FIG. 6 is a schematic view of a portion of the present invention;

FIG. 7 is a schematic view of a portion of the present invention;

FIG. 8 is a schematic view of a portion of the present invention;

fig. 9 is an enlarged view of a part of the structure of the present invention.

The specific implementation mode is as follows:

in order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention is further described below with reference to the following examples:

a portable variable-diameter surrounding pit digging machine comprises a support frame 1, wherein two ends of the support frame 1 are respectively connected with a working handle 2, a variable-speed and variable-diameter mechanism 3 is erected in the middle of the support frame 1, two sides of the bottom of the variable-speed and variable-diameter mechanism 3 are respectively connected with a power distribution mechanism 4 and a direction-changing conveying mechanism 5, the variable-speed and variable-diameter mechanism 3 is connected with a variable-diameter gear lever 6, and four corners of the support frame 1 are respectively and movably connected with fixed contact pins 7 perpendicular to the support frame; wherein:

the speed-changing and diameter-changing mechanism 3 comprises a main frame 31, a connecting slide block 32, a pull rod frame 33, a bearing 34, a surrounding speed-changing gear set 35 and an engine 36 are respectively arranged on the upper surface of the main frame 31 from bottom to top, an output shaft is connected to the bottom of the engine 36, a transfer transmission gear 354 connected with a transmission upper gear set 351 in the surrounding speed-changing gear set 35 is arranged on the upper portion of the output shaft, the transmission upper gear set 351 is transmitted to a transmission lower gear plate 353 in the surrounding speed-changing gear set 35 through a transmission middle gear set 352 in the surrounding speed-changing gear set 35, the transmission lower gear plate 353 is connected with a frame barrel arranged on the upper portion of the main frame 31, the output shaft penetrates through the frame barrel and extends into the interior of the main frame 31, the bearing 34, the pull rod frame 33 and the connecting slide block 32 are respectively arranged on the frame barrel, one end of the pull rod frame 33 is connected with a pull rod 38, the pull rod 38 penetrates through the surrounding speed change gear set 35 and is connected with the variable-diameter gear lever 6, one end of the connecting slide block 32 is connected with the top of a reversing rod 42 in the power distribution mechanism 4, a synchronous belt transmission mechanism 39 is arranged on the outer side face of the main frame 31, opposite to the power distribution mechanism 4, the synchronous belt transmission mechanism 39 is connected with a transmission bevel gear 371 arranged at the bottom of an output shaft through a transmission bevel gear 391 at the end part of the transmission connecting rod, a conveying belt transmission mechanism 311 is arranged on one side face of the main frame 31, and the conveying belt transmission mechanism 311 is in transmission connection with a roller shaft at one end;

the power distribution mechanism 4 comprises a power distribution box 41, a reversing rod 42 is vertically arranged in the power distribution box 41, a worm gear and worm reversing speed reducer 43 is arranged at the top of the reversing rod 42, and a reversing bevel gear set 44 is connected to the lower part of the reversing rod 42;

the direction-changing conveying mechanism 5 comprises a conveying support frame 51 arranged at the bottom of the main frame 31, a support block 52 is arranged at one side of the conveying support frame 51, a spline transmission rod 53 is erected between the supporting block 52 and the main frame 31, one end of the spline transmission rod 53 extends out of the main frame 31 and is connected with a spline transmission wheel 392 in the synchronous belt transmission mechanism 39, the spline transmission rod 53 is provided with a helical gear 54, the bottom of the conveying support frame 51 is provided with a transmission screw rod 55, one end part of the transmission screw rod 55 extends out of the conveying support frame 51 and is connected with a reversing bevel gear 56, a reversing gear box 57 is erected between the transmission screw rod 55 and the spline transmission rod 53, a flood dragon cutter 58 is arranged in the reversing gear box 57, the top of flood dragon cutter 58 is equipped with the transmission helical gear 59 with helical gear 54 engaged with, be equipped with conveyer belt 511 on the transport support frame 51.

Preferably, the top of the pull rod 38 is provided with a convex block 381 with teeth on the convex edge, the variable-diameter stop rod 6 is connected with the convex block 381 through a movable gear 61, and the movable gear 61 is meshed with the teeth on the convex edge of the convex block 381, so that the movable adjustment of the lifting and lowering of the pull rod 38 is realized.

Preferably, the inboard activity in both ends of support frame 1 is equipped with sliding pressure plate 8, sliding pressure plate 8 is including two movable base 81, two be equipped with connecting rod 82 between the movable base 81, be equipped with arc 83 on the movable base 82, remove sliding pressure plate 8 for arc 83 is to fixed contact pin 7 pressfitting, can realize closing on the top of fixed contact pin 7, guarantees can not reciprocate at fixed contact pin 7, thereby is convenient for press down fixing device, and the device of being convenient for deposits moreover.

Preferably, the fixed contact pin 7 is sleeved with a suspension spring 71 to support the device, and when the sliding pressure plate 8 is not used, the digging effect can be conveniently controlled.

Preferably, the bottom of the reversing gear box 57 is provided with a flood dragon cutter protecting shell 571, which can effectively protect flood dragon cutters and prevent soil in a digging pit from scattering.

Preferably, the throttle controller 21 is arranged on the working handle 2, so that the speed change and the pit digging efficiency can be effectively controlled.

Further, the reversing bevel gear 56 is located between two bevel gears of the reversing bevel gear set 44, and the reversing bevel gear 56 is engaged with one of the two bevel gears by adjusting the reducing gear lever 6, so that the reversing gear box 57 moves back and forth on the spline transmission rod 53 and the transmission screw rod 55, and reducing adjustment is realized.

When the device is used specifically, two operators lift the device to a position needing digging, press the device downwards, insert four fixed contact pins into soil, start an engine, pull a reducing gear lever to enable a turning conveying mechanism to return to a zero point, move a sliding pressure plate to release the fixed contact pins, adjust the size of an accelerator, hold a working handle at two sides of the two operators simultaneously and press the working handle downwards, so that digging can be started, a smallest gallery can be formed after a main frame rotates for a circle around a speed change gear set, then pull the reducing gear lever, enlarge the digging diameter in the operation process, repeat digging until the needed pit diameter is dug after the second circle is dug, stop the device after the working is completed, push the sliding pressure plate back to lock the fixed contact pins, and place the device additionally.

While certain exemplary embodiments of the invention have been described above by way of illustration only, it will be apparent to those skilled in the art that the described embodiments may be modified in various different ways without departing from the scope of the invention. Accordingly, the foregoing description is illustrative in nature and is not to be construed as limiting the scope of the invention as claimed.

Unless defined otherwise, all academic and scientific terms used herein have the same meaning as is understood by one of ordinary skill in the art to which this invention belongs.

In case of conflict, the present specification, including definitions, will control.

All percentages, parts, ratios, etc., are by weight unless otherwise indicated.

When a value or range of values, preferred range or list of lower preferable values and upper preferable values is given, it should be understood that it specifically discloses any range formed by any pair of values of any lower range limit or preferred value and any upper range limit or preferred value, regardless of whether ranges are separately disclosed. Where a range of numerical values is described herein, unless otherwise stated, the range is intended to include the endpoints of the range and all integers and fractions within the range.

When the term "about" or "approximately" is used to describe a numerical value or an end of a range, the disclosure should be interpreted to include the specific numerical value or end points referred to.

The use of "a" and "an" are merely for convenience and to give a general sense of the invention to describe elements and components of the invention. Unless expressly stated otherwise, this description should be read to include one or at least one.