阅读说明：本技术 一种割草机用便于倒草的草袋结构 (Grass bag structure convenient for grass dumping for mower ) 是由 谢安源 刘超鹏 史新明 陈兰 于 2021-09-09 设计创作，主要内容包括：本发明涉及一种割草机用便于倒草的草袋结构；本发明通过弹簧与活动杆的配合以及弹簧与连接架和第一切口的接触使得草袋盖板在常态下处于与草袋本体呈闭合状态,需要将草料倒出时,通过使得第二连接杆脱离圆弧第一切口的,再用手扶住草袋本体后端进行旋转,即可实现不用将草袋本体取下就可以实现倒草的操作,通过主动机构和被动机构的配合进而改变清扫头的倾斜度,从而使得清扫头与底壳底部接触进行清扫袋体里侧草的工作,从而实现不需要人工手伸进去清理,避免了割伤清理员的情况发生,清扫头不与底壳底部接触则使得清扫头回程时不会出现磨损,延长了清扫头的使用寿命。(The invention relates to a grass bag structure convenient for grass dumping for a mower; according to the grass bag cleaning machine, the grass bag cover plate is normally in a closed state with the grass bag body through the matching of the spring and the movable rod and the contact of the spring, the connecting frame and the first notch, when grass materials need to be poured out, the second connecting rod is separated from the arc first notch, the rear end of the grass bag body is held by a hand to rotate, the grass pouring operation can be achieved without taking down the grass bag body, the inclination of the cleaning head is changed through the matching of the driving mechanism and the driven mechanism, the cleaning head is in contact with the bottom of the bottom shell to clean grass on the inner side of the bag body, manual work is not needed to stretch into the bag body to clean the grass, the situation that a cleaner is cut is avoided, the cleaning head is not in contact with the bottom of the bottom shell, the cleaning head cannot be abraded during return stroke, and the service life of the cleaning head is prolonged.)

1. The utility model provides a lawn mower is with grass bag structure of being convenient for fall grass, includes grass bag body (4), grass bag apron (2) and roating seat (1), its characterized in that: the straw bag comprises a straw bag body (4) and is characterized in that the straw bag body (4) comprises a bottom shell (401) and a top cover (402), the top of the bottom shell (401) is fixedly connected with the top of the top cover (402) through screws, a connecting frame (28) is arranged between the right end of the straw bag body (4) and a rotating seat (1), bolts on the front side and the rear side of the connecting frame (28) are movably sleeved with through holes on the two sides of the rotating seat (1), connecting pieces are arranged between the right end of the straw bag body (4) and the connecting frame (28) and between the right end of the straw bag body (4) and a straw bag cover plate (2), the right end of the straw bag body (4) is connected with the connecting pieces through screws, a straw bag component (3) is fixedly connected with the front side and the back side of the rotating seat (1) through a first connecting rod (9) between the left end and the right end of the straw bag body (4), and the first connecting rod (9) is movably sleeved with the straw bag component (3), a first cut (6) is formed in the bottom of the grass bag cover plate (2), and a cleaning mechanism is installed on an inner groove of the bottom shell (401).

2. The grass bag structure convenient for grass dumping for the mower according to claim 1, characterized in that: the connecting piece comprises movable rod (8), spring (7), and the both ends of movable rod (8) run through the one end bottom of through-hole spring (7) on link (28) top and straw bag apron (2) right side and the top contact of link (28), the other end of spring (7) and the top contact of first incision (6).

3. The grass bag structure convenient for grass dumping for the mower according to claim 1, characterized in that: the straw bag component (3) is composed of a handle (301) and a fixing sleeve (302), the fixing sleeve of the fixing sleeve (302) is connected to the outer wall of the handle (301), and the top of the fixing sleeve (302) is provided with a circular arc first notch (303).

4. The grass bag structure convenient for grass dumping for the mower according to claim 3, characterized in that: two ends of the first connecting rod (9) respectively penetrate through the front surface and the back surface of the bottom shell (401) and are movably clamped with the arc first notch (303).

5. The grass bag structure convenient for grass dumping for the mower according to claim 1, characterized in that: first spout (10) have been seted up to drain pan (401) back, the inside sliding connection of first spout (10) has slider (13), and one end screw fixedly connected with motor (12) of drain pan (401) are kept away from in slider (13), and first through-hole (11) have been seted up to the back between the rear inner wall of drain pan (401).

6. The grass bag structure convenient for grass dumping for the mower according to claim 1, characterized in that: cleaning mechanism includes active mechanism and passive mechanism, active mechanism comprises first transmission shaft (24), first gear (21), rack (20), the both ends of first transmission shaft (24) are the activity respectively and are pegged graft inside preceding inner wall and first through-hole (11) of drain pan (401), the output of motor (12) and the rear end fixed connection of first transmission shaft (24), the front of rack (20) and the inside fixed welding in place in the place ahead of drain pan (401), the outer wall of first transmission shaft (24) just is located rack (20) and directly over the fixed cover and has been connect first gear (21), first gear (21) and rack (20) meshing are connected.

7. The grass bag structure convenient for grass dumping for the mower according to claim 6, characterized in that: one section in the middle of the first transmission shaft (24) is a helicoid, a movable nut (22) is arranged on the outer side of the helicoid, a spiral hole (5) is formed between the front surface and the back surface of the movable nut (22), the spiral hole (5) is fixedly connected with the helicoid through threads, a box body (23) is arranged on the outer wall of the first transmission shaft (24) and positioned on the outer side of the helicoid, a third ball bearing is arranged between the box body (23) and the first transmission shaft (24), the outer ring and the inner ring of the third ball bearing are respectively fixedly sleeved with the outer walls of the box body (23) and the first transmission shaft (24), an L-shaped connecting frame (30) is welded on the top of the box body (23), the other end of the L-shaped connecting frame (30) is welded on the inner wall in front of the bottom shell (401), a guide rod (25) is welded on the inner wall of the box body (23), the guide rod (25) penetrates through the front surface and the back surface of the movable nut (22), the guide rod (25) is movably sleeved with the movable nut (22), the moving nut (22) is in the shape of a gear.

8. The grass bag structure convenient for grass dumping for the mower according to claim 6, characterized in that: the driven mechanism comprises a second transmission shaft (24) and a second gear (19), the outer wall of the second transmission shaft (24) is located under the box body (23) and fixedly sleeved with a cleaning head (17), a second notch is formed in the top of the cleaning head (17), the second gear (19) is fixedly sleeved with the second transmission shaft (24) and the second gear (19) is located inside the second notch.

9. The grass bag structure for the mower according to claim 1 or 8, wherein the grass bag structure comprises: rolling grooves (16) are formed in the front inner wall and the rear inner wall of the bottom shell (401), rolling wheels (15) are connected to the inner portions of the rolling grooves (16) in a rolling mode, second transmission shafts (24) are movably inserted into the inner rings of the two rolling wheels (15), first ball bearings are arranged between the second transmission shafts (24) and the inner rings of the rolling wheels (15), and the second transmission shafts (24) are movably connected with the inner rings of the rolling wheels (15) through the first ball bearings.

10. The grass bag structure convenient for grass dumping for the mower according to claim 1 or 6, wherein: be equipped with coupling assembling between active mechanism and the passive mechanism, coupling assembling comprises second ball bearing (27) and second connecting rod (26), has seted up the third through-hole between the front to the back of second connecting rod (26), and third through-hole and first transmission shaft (24) pass through second ball bearing (27) swing joint, the bottom of second connecting rod (26) and the outer wall welded fastening of second transmission shaft (24).

Technical Field

The invention relates to the technical field of garden auxiliary tools, in particular to a grass bag structure convenient for grass dumping for a mower.

Background

The weeds that lawn mower produced need be retrieved and concentrated the clearance through collection grass bag in the course of the work, need the staff go on when pouring out the grass in the grass bag again clear up collection grass bag, still need tear collection grass bag open during the clearance, and is more troublesome, has wasted manpower and materials, and the grass bag of examining the grass bag the inside needs the manual work to clear up it out, and the grass more sharp condition that can have the person's of incising wound clearance skin that can exist of grass occasionally.

Disclosure of Invention

In order to overcome the technical defects in the prior art, the invention provides a grass bag structure convenient for grass dumping for a mower, which can effectively solve the problems in the background art.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

the embodiment of the invention discloses a grass bag structure convenient for grass dumping for a mower, which comprises a grass bag body, a grass bag cover plate and a rotary seat, wherein the grass bag body comprises a bottom shell and a top cover, a connecting frame is arranged between the bottom of the grass bag body and the rotary seat, bolts on two sides of the connecting frame are movably connected with through holes on two sides of the rotary seat, connecting pieces are arranged between the bottom of the grass bag body and the connecting frame as well as between the bottom of the grass bag body and the grass bag cover plate, the connecting pieces are connected between the bottom of the grass bag body and the connecting frame as well as between the bottom of the grass bag cover plate, a grass bag assembly is fixedly connected with the front surface and the back surface of the rotary seat through screws, a first connecting rod penetrates through the left end and the right end of the grass bag body, the first connecting rod is movably sleeved with the grass bag assembly, a first notch is formed in the bottom of the grass bag cover plate, and a cleaning mechanism is arranged in a groove in the bottom shell.

In any of the above aspects, it is preferable that: the connecting piece comprises movable rod, spring, and the both ends of movable rod run through the one end bottom of link top and the through-hole spring on grass pocket apron right side and the top contact of link, the other end of spring and the top contact of first incision.

In any of the above aspects, it is preferable that: the straw bag component consists of a handle and a fixing sleeve, the fixing sleeve of the fixing sleeve is fixedly connected to the outer wall of the handle, and the top of the fixing sleeve is provided with a circular arc first notch.

In any of the above schemes, preferably, two ends of the first connecting rod pass through the front surface and the back surface of the bottom case respectively and are movably clamped in the circular arc first notch.

Preferably in any one of the above schemes, the back of the bottom shell is provided with a first sliding groove, the inside of the first sliding groove is connected with a sliding block in a sliding manner, one end of the sliding block, far away from the bottom shell, is fixedly connected with a motor through a screw, and a first through hole is formed from the rear inner wall of the bottom shell to the back.

In any of the above schemes, preferably, the cleaning mechanism includes an active mechanism and a passive mechanism, the active mechanism is composed of a first transmission shaft, a gear and a rack, two ends of the first transmission shaft are respectively movably inserted into the front inner wall and the first through hole of the bottom case, the output end of the motor is fixedly connected with the rear end of the first transmission shaft, the front side of the rack is fixedly welded with the front inside of the bottom case, the outer wall of the first transmission shaft is fixedly sleeved with the first gear right above the rack, and the first gear is meshed with the rack.

Preferably in any one of the above schemes, one section of the middle of the first transmission shaft is a helicoid, a movable nut is arranged on the outer side of the helicoid, a spiral hole is formed between the front side and the back side of the movable nut, the spiral hole is fixedly connected with the helicoid thread, a box body is arranged on the outer wall of the first transmission shaft and on the outer side of the helicoid, a third ball bearing is arranged between the box body and the first transmission shaft, an outer ring and an inner ring of the third ball bearing are respectively fixedly sleeved with the outer walls of the box body and the first transmission shaft, an L-shaped connecting frame is welded on the top of the box body, the other end of the L-shaped connecting frame is welded on the inner wall in front of the bottom shell, a guide rod is welded on the inner wall of the box body, the guide rod penetrates through the front side and the back side of the movable nut, the guide rod is movably sleeved with the movable nut, and the movable nut is in a gear shape.

In any of the above schemes, preferably, the driven mechanism includes a second transmission shaft and a second gear, the outer wall of the second transmission shaft is fixedly sleeved with a cleaning head located under the box body, a second notch is formed in the top of the cleaning head, the second gear is fixedly sleeved with the second transmission shaft, and the second gear is located inside the second notch.

In any of the above schemes, preferably, rolling grooves are formed in the inner wall in front of and the inner wall behind the bottom shell, rolling wheels are connected inside the rolling grooves in a rolling manner, second transmission shafts are movably inserted into inner rings of the two rolling wheels, first ball bearings are arranged between the second transmission shafts and the inner rings of the rolling wheels, and the second transmission shafts and the inner rings of the rolling wheels are movably connected through the first ball bearings.

Preferred in any one of the above schemes, be equipped with coupling assembling between active mechanism and the passive mechanism, coupling assembling comprises second ball bearing and second connecting rod, has seted up the third through-hole between the front of second connecting rod to the back, and third through-hole and first transmission shaft pass through second ball bearing swing joint, the bottom of second connecting rod and the outer wall welded fastening of second transmission shaft.

Compared with the prior art, the invention has the beneficial effects that:

1. make the straw bag apron be in under the normality and be the closure state with the straw bag body through the cooperation of spring and movable rod and the contact of spring and link and first notched, when need pouring the forage, through making the second connecting rod break away from the first notched of circular arc, the reuse is hand to live straw bag body rear end and is rotated, can realize not just can realizing falling the operation of grass with taking off the straw bag body.

2. The closure between straw bag apron and the straw bag body is more firm through the first notched joint of second connecting rod and circular arc.

3. Through the cooperation of slider and first spout for the slider slides along first spout, and then drives the motor and slides along first spout.

4. The first transmission shaft rotates, and the guide rod limits the moving nut to rotate at the same time, so that the moving nut makes linear reciprocating motion along the axis of the first transmission shaft and in the range of the spiral surface, when the moving nut guide rod is positioned at the fracture, the moving nut makes rotary motion so as to be meshed with the second gear to drive the second gear to rotate, and further drive the second transmission shaft to rotate so as to drive the cleaning head to rotate, so that the cleaning head is not contacted with the bottom of the bottom shell, the cleaning head is not contacted with the bottom shell when the cleaning work is not carried out, the abrasion of the cleaning head is reduced, the service life of the cleaning head is prolonged, when the cleaning head moves towards the leftmost end of the bottom shell and reaches the leftmost end of the bottom shell, the cleaning head is meshed with the second gear again so as to drive the second gear to turn over and reset, and further drive the cleaning head to rotate to the state when the original cleaning state is contacted with the bottom of the bottom shell, the cleaning work can be carried out again, and the grass close to the left end face is swept out by the sweeping head without the need of stretching a manual hand into the sweeping head for cleaning, so that the condition that a cleaner is cut is avoided.

5. The cooperation through second connecting rod and second ball bearing makes when first transmission shaft removes to drive the second connecting rod and remove along rolling the groove, through first ball bearing and second transmission shaft swing joint with the wheel that rolls to convert the slip of second connecting rod into the roll of wheel that rolls, thereby reduced frictional force, guaranteed that the second transmission shaft is not worn and torn, guaranteed the position precision of second transmission shaft.

Drawings

The drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

FIG. 1 is an isometric view of a grass bag structure for a lawnmower to facilitate grass dumping according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion B of FIG. 1 for facilitating grass dumping of a mower according to an embodiment of the present invention;

FIG. 3 is an isometric view of a grass bag for a lawnmower to facilitate pouring of grass according to an embodiment of the present invention in FIG. 1;

FIG. 4 is an enlarged view of a portion A of FIG. 3 for facilitating grass dumping of a mower according to an embodiment of the present invention;

FIG. 5 is an isometric view of a lawnmower with the swivel and attachment bracket removed to facilitate grass dumping in accordance with an embodiment of the present invention;

FIG. 6 is a perspective view of an attachment shaft of a bottom housing and structure for facilitating grass dumping for a lawnmower according to an embodiment of the present invention;

FIG. 7 is a perspective view of the motor and the slider for facilitating grass dumping for a lawnmower according to an embodiment of the present invention;

FIG. 8 is a schematic view of a lawn mower provided by an embodiment of the present invention, cut along a left-right direction of a first barrel for facilitating grass dumping;

FIG. 9 is an isometric view of a rotary base and a connecting frame connection for facilitating grass dumping for a lawnmower according to an embodiment of the present invention;

fig. 10 is a drawing showing a box body for grass dumping and a connecting shaft of the internal parts of the box body for grass dumping for the mower according to the embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

For better understanding of the above technical solutions, the technical solutions of the present invention will be described in detail below with reference to the drawings and the detailed description of the present invention.

The first embodiment is as follows:

according to the figures 1, 2, 3, 4, 6 and 9, a grass bag structure convenient for grass dumping for a mower comprises a grass bag body 4, a grass bag cover plate 2 and a rotary seat 1, wherein the grass bag body 4 comprises a bottom shell 401 and a top cover 402, a connecting frame 28 is arranged between the bottom of the grass bag body 4 and the rotary seat 1, bolts at two sides of the connecting frame 28 are movably connected with through holes at two sides of the rotary seat 1, the bolts are marked at 29 in the figure, connecting pieces are arranged between the bottom of the grass bag body 4 and the connecting frame 28 as well as between the bottom of the grass bag cover plate 2, the bottom of the grass bag body 4 is connected with the connecting frame 28 and the grass bag cover plate 2 through the connecting pieces, a grass bag assembly 3 is fixedly connected with the front and the back of the rotary seat 1 through screws, a first connecting rod 9 penetrates through the left end and the right end of the grass bag body 4, the first connecting rod 9 is movably sleeved with the grass bag assembly 3, a first cut 6 is arranged at the bottom of the grass bag cover plate 2, the internal groove of the bottom case 401 is mounted with a cleaning mechanism.

According to the composition of the movable rod 8 and the spring 7 shown in fig. 3, two ends of the movable rod 8 penetrate through the top of the connecting frame 28 and the bottom of one end of the through hole spring 7 on the right side of the grass bag cover plate 2 to be in contact with the top of the connecting frame 28, and the other end of the spring 7 is in contact with the top of the first cut 6.

Make grass bag apron 2 be in under the normality and be the closed condition with grass bag body 4 through the cooperation of spring 7 with movable rod 8 and the contact of spring 7 with link 28 and first incision 6, when needing to pour the forage, through making second connecting rod 26 break away from the first notched 303 of circular arc, the reuse is hand to live the rear end of grass bag body 1 and is rotated, can realize just can realizing falling the operation of grass without taking off the grass bag body.

The grass bag assembly 3 shown in fig. 1, 2, 3, 4, 5 and 9 comprises a handle 301 and a fixing sleeve 302, wherein the fixing sleeve 302 is fixedly connected to the outer wall of the handle 301, and the top of the fixing sleeve 302 is provided with a circular arc first notch 303.

The two ends of the first connecting rod 9 shown in fig. 1, 2, 5 and 9 are movably clamped in the circular arc first cut 303 through the front and back of the bottom case 401, respectively.

The second connecting rod 26 is clamped with the arc-shaped first notch 303, so that the grass bag cover plate 2 and the grass bag body 4 are closed more firmly.

Example two:

according to fig. 6, 7 and 8, a first sliding groove 10 is formed in the back of the bottom shell 401, a sliding block 13 is connected inside the first sliding groove 10 in a sliding manner, a motor 12 is fixedly connected to one end, far away from the bottom shell 401, of the sliding block 13 through a screw, and a first through hole 11 is formed between the inner wall of the rear portion of the bottom shell 401 and the back of the bottom shell 401.

Through the cooperation of the sliding block 13 and the first sliding groove 10, the sliding block 13 slides along the first sliding groove 10, and then the motor 12 is driven to slide along the first sliding groove 10.

According to the cleaning mechanism shown in fig. 6, the cleaning mechanism comprises an active mechanism and a passive mechanism, the active mechanism is composed of a first transmission shaft 24, a first gear 21 and a rack 20, two ends of the first transmission shaft 24 are respectively movably inserted into the front inner wall of the bottom shell 401 and the first through hole 11, the output end of the motor 12 is fixedly connected with the rear end of the first transmission shaft 24, the front side of the rack 20 and the front inside of the bottom shell 401 are fixedly welded, the first gear 21 is fixedly sleeved on the outer wall of the first transmission shaft 24 and located right above the rack 20, and the first gear 21 is meshed with the rack 20.

The first transmission shaft 24 is driven to rotate by starting the motor 12, and the first gear 21 is driven to rotate and move, and the motor 12 is driven to move.

According to the figures 6 and 10, the middle section of the first transmission shaft 24 is a spiral surface, a movable nut 22 is arranged on the outer side of the spiral surface, a spiral hole 5 is arranged between the front surface and the back surface of the movable nut 22, the spiral hole 5 is fixedly connected with the spiral surface through a thread, a box body 23 is arranged on the outer wall of the first transmission shaft 24 and positioned on the outer side of the spiral surface, a third ball bearing is arranged between the box body 23 and the first transmission shaft 24, an outer ring and an inner ring of the third ball bearing are respectively fixedly sleeved with the outer walls of the box body 23 and the first transmission shaft 24, an L-shaped connecting frame 30 is welded on the top of the box body 23, the other end of the L-shaped connecting frame 30 is welded on the front inner wall of the bottom shell 401, the box body 23 is movably sleeved with the first transmission shaft 24 through the third ball bearing, a guide rod 25 is welded on the inner wall of the box body 23, the guide rod 25 penetrates through the front surface and the back surface of the movable nut 22, a broken opening 18 is arranged right above the second gear 19 of the guide rod 25, the size of the break-off opening is matched to the distance between the front and back of the second gear wheel 19.

The first transmission shaft 24 rotates, the guide rod 25 limits the movement of the movement nut 22 at the same time, the movement nut 22 makes linear reciprocating motion along the axis of the first transmission shaft 24 within the range of the spiral surface, when the guide rod 25 of the movement nut 22 is positioned at the fracture, the movement nut 22 makes rotary motion, so as to be meshed with the second gear 19, the second gear 19 is driven to rotate, the second transmission shaft 24 is driven to rotate, the cleaning head 17 is not contacted with the bottom of the bottom shell 401, the cleaning head 17 is not contacted with the bottom shell 401 when cleaning work is not performed, abrasion of the cleaning head 17 is reduced, the service life of the cleaning head 17 is prolonged, when the cleaning head 17 moves towards the leftmost end of the bottom shell 401 and reaches the leftmost end of the bottom shell 401, the cleaning head is meshed with the second gear 19 again to drive the second gear 19 to turn over and reset, and the cleaning head 17 is driven to rotate to the original cleaning state, and the state is contacted with the bottom of the bottom shell 401 again The sweeping work is carried out, the grass close to the left end face is swept out through the sweeping head 17, a manual hand is not required to stretch into the sweeping head for cleaning, and the situation of cutting a cleaner is avoided.

The passive mechanism shown in fig. 6 and 10 includes a second transmission shaft 24 and a second gear 19, the second gear 19 is not in contact with the cleaning head 17, the cleaning head 17 is fixedly sleeved on the outer wall of the second transmission shaft 24 and located right below the box body 23, the cleaning head 17 is made of elastic plastic, the bottom of the cleaning head 17 is in contact with the inner bottom surface of the bottom shell 401, a second notch is formed in the top of the cleaning head 17, the second gear 19 is fixedly sleeved with the second transmission shaft 24, and the second gear 19 is located inside the second notch.

According to the figure 6, rolling grooves 16 are formed in the front inner wall and the rear inner wall of the bottom shell 401, rolling wheels 15 are connected to the inside of the rolling grooves 16 in a rolling mode, second transmission shafts 24 are movably inserted into the inner rings of the two rolling wheels 15, first ball bearings are arranged between the second transmission shafts 24 and the inner rings of the rolling wheels 15, and the second transmission shafts 24 are movably connected with the inner rings of the rolling wheels 15 through the first ball bearings.

According to 6 show be equipped with coupling assembling between active mechanism and the passive mechanism, coupling assembling comprises second ball bearing 27 and second connecting rod 26, has seted up the third through-hole between the front of second connecting rod 26 to the back, and third through-hole and first transmission shaft 24 pass through second ball bearing 27 swing joint, and the bottom of second connecting rod 26 and the outer wall welded fastening of second transmission shaft 24.

Through the cooperation of second connecting rod 26 and second ball bearing 27 make first transmission shaft 24 drive second connecting rod 26 and remove along rolling groove 16 when removing, through rolling wheel 15 through first ball bearing and second transmission shaft 24 swing joint to convert the slip of second connecting rod 16 into the roll of rolling wheel 15, thereby reduced frictional force, guaranteed that second transmission shaft 24 is not worn and torn, guaranteed second transmission shaft 24's position precision.

Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.