Elastic claw mechanism and residual film picking device

Abstract

The utility model discloses an elastic claw mechanism which solves the problem that field maintenance is difficult due to the fact that elastic claws in an existing residual film picking device are difficult to disassemble. The elastic claw mechanism comprises a driving shaft and a plurality of elastic claw parts installed on the driving shaft, each elastic claw part comprises a fixing base, an elastic claw, a fixing shaft and a clamping assembly, each elastic claw comprises a picking part, a cantilever part and a spiral part connected between the picking part and the cantilever part, and the clamping assemblies are arranged on the fixing bases. The fixing base is installed on the driving shaft, the spiral part is arranged on the fixing shaft in a sleeving mode, the fixing shaft is rotatably installed on the fixing base, the clamping assembly is detachably clamped to the two ends, stretching out of the fixing base, of the fixing shaft, and a clamping component is arranged on the driving shaft. The cantilever part is clamped between the clamping part and the driving shaft, and the picking part extends out of the fixed seat. The utility model further provides a residual film picking device which comprises the elastic claw mechanism in the technical scheme.

Description

Technical Field

[0001] The utility model relates to the field of residual film picking-up devices, in particular to a spring tooth mechanism of a residual film picking-up device. Background Art

[0002] At present, the mechanical recovery method is a common and efficient way to collect residual films in field soil. Existing residual film picking-up devices generally use a spring tooth mechanism to pick up and collect residual films. However, during the process of picking up residual films, due to the harsh working environment and complex working conditions, the loads on the spring tooth mechanism are uneven, which easily causes the spring teeth in the spring tooth structure to deform or even break and fail, seriously affecting the film picking efficiency of the residual film picking-up device.

[0003] However, the spring teeth in the existing residual film picking-up devices are inconvenient to disassemble, resulting in difficult field maintenance. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a spring tooth mechanism and a residual film picking-up device to solve the problem that the spring teeth in the existing residual film picking-up devices are difficult to disassemble, resulting in difficult field maintenance.

[0005] To achieve the above technical objectives, a spring tooth mechanism proposed by the utility model includes a driving shaft and a plurality of spring tooth components mounted on the driving shaft. The spring tooth component includes a fixed seat, a spring tooth, a fixed shaft and a clamping component. The spring tooth includes a picking-up part, a cantilever part and a spiral part connecting the picking-up part and the cantilever part. The fixed seat is mounted on the driving shaft. The spiral part is sleeved on the fixed shaft. The fixed shaft is rotatably mounted on the fixed seat. The clamping component is detachably clamped at both ends of the fixed shaft extending out of the fixed seat. A clamping part is provided on the driving shaft. The cantilever part is clamped between the clamping part and the driving shaft. The picking-up part extends out of the fixed seat.

[0006] Preferably, the clamping component includes a clamping ring, a hinge shaft and a quick-release arm. The clamping ring includes a fixed part and a deformation part, and a clamping hole for the fixed shaft to pass through is formed between the two. One end of the two is connected, and a notch communicating with the clamping hole is formed between the other ends of the two. One end of the hinge shaft passes through the deformation part and the notch and is connected to the fixed part. The other end of the hinge shaft is hinged with the quick-release arm. The locking or loosening of the quick-release arm changes the size of the notch to clamp or loosen the fixed shaft.

[0007] Preferably, a stop part is provided on the deformation part. When the quick-release arm is locked, the stop part stops the quick-release arm to limit the further rotation of the quick-release arm.

[0008] Preferably, an operating gap is left between the deformation portion and the quick-release arm.

[0009] Preferably, the locking ring is provided with a deformation groove communicating with the locking hole on the opposite side of the notch.

[0010] Preferably, the drive shaft is provided with a plurality of pin holes corresponding to the elastic tooth component, the elastic tooth component also includes a pin shaft, the free end of the pin shaft passes through the fixing seat and the pin hole in sequence and extends out of the pin hole, the clamping component is a gasket, the clamping component is sleeved on the free end, a limit hole is provided on the free end, a limit pin is installed in the limit hole, and the limit pin is stopped at the end of the clamping component away from the drive shaft.

[0011] Preferably, the spring tooth component further comprises a quick-release shaft assembly and a fan-shaped member, one end of the fan-shaped member is hinged to the fixing seat, and a positioning hole is provided on the other end, both ends of the quick-release shaft assembly are positioned on the fixing seat, the quick-release shaft assembly passes through the positioning hole to limit the fan-shaped member to the fixing seat, a clamping hole is formed between the fan-shaped member and the fixing seat, and the clamping hole clamps the drive shaft;

[0012] The quick-release shaft assembly includes a first shaft body, a second shaft body and a spring. One end of the first shaft body is slidably limited in the second shaft body. The spring is pre-tightened on the first shaft body and the second shaft body. The first shaft body and the second shaft body slide relative to each other to change the length of the quick-release shaft assembly, so that one end of the quick-release shaft assembly is separated from the fixing seat.

[0013] Preferably, two fan-shaped members are provided, and the two fan-shaped members are respectively arranged on the left and right sides of the fixing seat.

[0014] Preferably, the fan-shaped member includes a first fan-shaped member and a second fan-shaped member, a pivot portion is provided on the side of the fixing seat, the first fan-shaped member and the second fan-shaped member are hinged on both sides of the pivot portion, and a positioning column is connected between the first fan-shaped member and the second fan-shaped member.

[0015] The utility model also provides a residual film picking device, comprising a picking roller, on which a plurality of groups of spring tooth mechanisms described in any one of the above technical solutions are circumferentially mounted.

[0016] After adopting the above technical solution, the utility model has the following beneficial effects.

[0017] 1. A spring tooth mechanism proposed by the present utility model includes a drive shaft and a plurality of spring tooth components mounted on the drive shaft. The spring tooth component includes a fixed seat, a spring tooth, a fixed shaft, and a clamping component. The spring tooth includes a picking-up part, a cantilever part, and a spiral part connected between the picking-up part and the cantilever part. The fixed seat is mounted on the drive shaft, the spiral part is sleeved on the fixed shaft, the fixed shaft is rotatably mounted on the fixed seat, and the clamping component is detachably clamped at both ends of the fixed shaft extending out of the fixed seat. A clamping part is provided on the drive shaft, and the cantilever part is clamped between the clamping part and the drive shaft, and the picking-up part extends out of the fixed seat. The spring tooth is limited on the fixed seat by the fixed shaft, and the cantilever part of the spring tooth is clamped between the clamping part and the drive shaft. The picking-up part elastically extends out of the fixed seat to be in a stable working state. When the spring tooth needs to be replaced, after removing the clamping components at both ends of the fixed shaft, the fixed shaft is translated so that one end of it disengages from the fixed seat. It can be understood that there is enough clearance between adjacent two spring tooth components to provide enough translation space for the fixed shaft. Since the spring tooth has elasticity and the wall of the fixed seat can also provide a certain amount of deformation, the torsion of the fixed shaft can make the end that disengages from the fixed seat offset outside the fixed seat, so that the fixed shaft can be pulled out from the fixed seat. After removing the fixed shaft, the spring tooth can be pulled out from the fixed seat, thus realizing the disassembly of the spring tooth. When installing the spring tooth, first sleeve the spring tooth on the fixed shaft, install one end of the fixed shaft on the fixed seat and make it extend out. By twisting the fixed shaft and cooperating with the deformation of the wall of the fixed seat, the other end of the fixed shaft can be moved into the fixed seat, and the fixed shaft is translated to install both ends of the fixed shaft on the fixed seat. Then, the fixed shaft is limited on the fixed seat by the clamping group. With the spring tooth mechanism adopting the above structure, the spring tooth can be stably installed on the spring tooth component. At the same time, the disassembly and installation of the spring tooth are relatively simple, which is convenient for the operator to quickly disassemble and replace the damaged spring tooth.

[0018] 2. The clamping component includes a clamping ring, a hinge shaft, and a quick-release arm. The clamping ring includes a fixed part and a deformation part, and a clamping hole for the fixed shaft to pass through is formed between the two. One end of the two is connected, and a notch communicating with the clamping hole is formed between the other ends of the two. One end of the hinge shaft passes through the deformation part and the notch and is connected to the fixed part. A quick-release arm is hinged to the other end of the hinge shaft. The locking or loosening of the quick-release arm changes the size of the notch to clamp or loosen the fixed shaft. With such a setting, the clamping component has both a clamping function and a self-disassembly and assembly function. The operator can complete the disassembly of the fixed shaft without borrowing tools, further improving the convenience of the operator for disassembling and replacing the spring tooth.

[0019] 3. A stop part is provided on the deformation part. When the quick-release arm is locked, the stop part stops the quick-release arm to limit the further rotation of the quick-release arm. With such a setting, the deformation part can prevent the excessive rotation of the quick-release arm, thus ensuring that the deformation part will not be damaged due to excessive deformation.

[0020] 4. An operating gap is left between the deformation part and the quick release arm. The operating gap facilitates the operator to insert his fingers between the deformation part and the quick release arm to lock or loosen the quick release arm, thereby further improving the convenience of the operator to disassemble and replace the spring teeth.

[0021] 5. The clamping ring is provided with a deformation groove connected to the clamping hole on the opposite side of the notch. This arrangement provides an additional deformation part for the clamping ring. When the deformation part is subjected to a large force, the deformation groove also deforms accordingly, thereby sharing a part of the deformation amount, thereby avoiding excessive deformation of the deformation part, which may cause cracks or even damage to the deformation part.

[0022] 6. The drive shaft is provided with a plurality of pin holes corresponding to the spring-tooth components. The spring-tooth components also include a pin shaft. The free end of the pin shaft passes through the fixing seat and the pin hole in sequence and extends out of the pin hole. The clamping component is a gasket. The clamping component is sleeved on the free end. The free end is provided with a limit hole. A limit pin is installed in the limit hole. The limit pin stops at the end of the clamping component away from the drive shaft. In this way, by providing a plurality of pin holes corresponding to the spring-tooth components on the drive shaft, the installation position of each spring-tooth component on the drive shaft is determined, avoiding manual determination of the position of the spring-tooth component or disassembly of the spring teeth affecting the position of the spring-tooth component, thereby affecting the film picking efficiency.

[0023] 7. The spring-tooth component also includes a quick-release shaft assembly and a fan-shaped component. One end of the fan-shaped component is hinged on the fixed seat, and the other end is provided with a positioning hole. Both ends of the quick-release shaft assembly are positioned on the fixed seat. The quick-release shaft assembly passes through the positioning hole to limit the fan-shaped component on the fixed seat. A clamping hole is formed between the fan-shaped component and the fixed seat, and the clamping hole clamps the drive shaft. The quick-release shaft assembly includes a first shaft body, a second shaft body and a spring. One end of the first shaft body can be slidably limited in the second shaft body. The spring is pre-tightened and sleeved on the first shaft body and the second shaft body. The first shaft body and the second shaft body slide relative to each other to change the length of the quick-release shaft assembly, so that one end of the quick-release shaft assembly is separated from the fixed seat. In this way, the spring-tooth component is installed on the drive shaft through the fan-shaped component and the quick-release shaft assembly. Since it is clamped on the drive shaft through the fan-shaped component and the fixed seat, multiple spring-tooth components do not need to be sleeved on the drive shaft in sequence for installation. On the one hand, the spring-tooth component can be installed individually, making its installation operation more convenient. On the other hand, the spring-tooth component can also be disassembled individually, making its maintenance and replacement easier.

[0024] 8. There are two fan-shaped parts, which are respectively arranged on the left and right sides of the fixing seat. With such arrangement, the elastic component can be more stably installed on the driving shaft, thereby improving the stability of the elastic component.

[0025] 9. The sector member includes a first sector member and a second sector member. A pivoting portion is provided on the side of the fixed seat. The first sector member and the second sector member are hinged on both sides of the pivoting portion, and a positioning post is connected between the first sector member and the second sector member. With such a setting, through the hinging of the first sector member and the second sector member, the left and right forces on the hinge of the sector member are balanced, avoiding damage to the hinge position caused by a large torque borne by the hinge point due to unilateral force on the sector member.

[0026] The present utility model also proposes a residual film picking-up device. Since the elastic tooth mechanism described in any of the above technical solutions is adopted, the residual film picking-up device has all the above technical effects.

[0027] These features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the residual film picking-up device in an embodiment of the present utility model;

[0029] Figure 2 is Figure 1 an enlarged view of part A in

[0030] Figure 3 is a schematic diagram of the elastic tooth mechanism in this embodiment;

[0031] Figure 4 is an exploded view of the elastic tooth mechanism in this embodiment;

[0032] Figure 5 is Figure 4 an enlarged view of part B in

[0033] Figure 6 is a schematic diagram of the engaging assembly in an embodiment of the present utility model;

[0034] Figure 7 is a schematic diagram of a fixed seat in an embodiment of the present utility model;

[0035] Figure 8 is a schematic diagram of the quick-release shaft assembly in an embodiment of the present utility model;

[0036] Figure 9 is a schematic diagram of the cooperation between the crank arm and the cam slideway in an embodiment of the present utility model;

[0037] Reference Signs:

[0038] 1. Elastic Tooth Mechanism;

[0039] 100. Driving Shaft, 110. Clamping Member, 111. Limit Pin, 120. Pin Shaft, 121. Free End, 122. Limit Hole;

[0040] 200. Tooth spring component, 210. Fixed seat, 211. Sector piece, 2111. Positioning hole, 2112. First sector piece, 2113. Second sector piece, 212. Clamping hole, 220. Tooth spring, 221. Picking part, 222. Cantilever part, 223. Spiral part, 230. Fixed shaft, 231. Engaging groove, 240. Engaging component, 241. Engaging ring, 2411. Fixed part, 2412. Deformation part, 2413. Engaging hole, 2414. Notch, 2415. Deformation groove, 2416. Stopping part, 242. Hinge shaft, 243. Quick-release arm, 2431. Locking part, 2432. Operating part;

[0041] 300. Quick-release shaft assembly, 310. First shaft body, 320. Second shaft body, 330. Spring;

[0042] 400. Picking drum, 410. Circular rib plate, 420. Cam slideway, 430. Crank arm, 431. Pulley. Detailed implementation mode

[0043] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings of the embodiments of the present invention. However, the following embodiments are only the preferred embodiments of the present invention and not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present invention.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0045] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" and "several" is two or more, unless otherwise clearly defined.

[0046] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "coupling", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0047] Embodiment 1:

[0048] As Figures 1 to 8 shown, a kind of spring tooth mechanism 1 proposed in the embodiment of the present utility model includes a drive shaft 100 and a plurality of spring tooth components 200, and the spring tooth components 200 are installed on the drive shaft 100. The spring tooth component 200 includes a fixed seat 210, a spring tooth 220, a fixed shaft 230 and a clamping component 240. The spring tooth 220 includes a picking part 221, a cantilever part 222 and a spiral part 223 connected between the picking part 221 and the cantilever part 222. The fixed seat 210 is installed on the drive shaft 100, the spiral part 223 is sleeved on the fixed shaft 230, the fixed shaft 230 is rotatably installed on the fixed seat 210, and the clamping component 240 is detachably clamped at both ends of the fixed shaft 230 extending out of the fixed seat 210 to limit the fixed shaft 230 on the fixed seat 210. A clamping part 110 is provided on the drive shaft 100, and the cantilever part 222 is clamped between the clamping part 110 and the drive shaft 100, and the picking part 221 extends out of the fixed seat 210.

[0049] Among them, the picking part 221 is used to hang the residual film on it when inserting into the soil. After the picking part 221 leaves the soil, the residual film hanging on the picking part 221 is collected by a demolding mechanism (not shown).

[0050] The spring tooth 220 is limited on the fixed seat 210 by the fixed shaft 230, and the cantilever portion 222 of the spring tooth 220 is clamped between the clamping member 110 and the drive shaft 100. The picking portion 221 elastically extends out of the fixed seat 210 to be in a stable working state. When the spring tooth 220 needs to be replaced, after removing the engaging components 240 at both ends of the fixed shaft 230, the fixed shaft 230 is translated so that one end thereof disengages from the fixed seat 210. It can be understood that sufficient gaps are reserved between adjacent two spring tooth components 200 to provide sufficient translation space for the fixed shaft 230. Due to the elasticity of the spring tooth 220 and the fact that the wall of the fixed seat 210 can also provide a certain amount of deformation, the twisting of the fixed shaft 230 can cause the end thereof disengaging from the fixed seat 210 to shift outside the fixed seat 210, so that the fixed shaft 230 can be pulled out from the fixed seat 210. The cantilever portion 222 of the spring tooth 220 is clamped between the clamping member 110 and the drive shaft 100. After removing the fixed shaft 230, the spring tooth 220 can be pulled out from the fixed seat 210, thereby realizing the disassembly of the spring tooth 220. When installing the spring tooth 220, first sleeve the spring tooth 220 on the fixed shaft 230, install one end of the fixed shaft 230 on the fixed seat 210 and make it extend out. By twisting the fixed shaft 230 and cooperating with the deformation of the wall of the fixed seat 210, the other end of the fixed shaft 230 can be moved into the fixed seat 210, and the fixed shaft 230 is translated to install both ends of the fixed shaft 230 on the fixed seat 210. Then, the fixed shaft 230 is limited on the fixed seat 210 by the engaging group. In this way, the replacement of the spring tooth 220 is completed.

[0051] With such a setting, the spring tooth 220 can be installed on the spring tooth component 200 more stably. At the same time, the disassembly and installation of the spring tooth 220 are relatively simple, which is convenient for the operator to quickly disassemble and replace the damaged spring tooth 220.

[0052] In a preferred embodiment, the engaging component 240 includes an engaging ring 241, a hinge shaft 242 and a quick-release arm 243. The engaging ring 241 includes a fixing portion 2411 and a deformation portion 2412. A engaging hole 2413 for the fixed shaft 230 to pass through is formed between the fixing portion 2411 and the deformation portion 2412. One ends of both the fixing portion 2411 and the deformation portion 2412 are connected, and the other ends of both are not connected so as to form a notch 2414 communicating with the engaging hole 2413 therebetween. One end of the hinge shaft 242 passes through the deformation portion 2412 and the notch 2414 and is connected to the fixing portion 2411. A quick-release arm 243 is hinged to the other end of the hinge shaft 242. The locking or loosening of the quick-release arm 243 changes the size of the notch 2414 so that the engaging hole 2413 clamps or loosens the fixed shaft 230.

[0053] With such a setting, the engaging component 240 has both an engaging function and a self-disassembly and assembly function. The operator can complete the fixation and disassembly without borrowing tools, further improving the convenience for the operator to disassemble and replace the spring teeth 220.

[0054] In some other embodiments, the engaging component 240 is a snap ring. Snap ring grooves are provided at both ends of the fixed shaft 230, and the operator can use snap ring pliers to disassemble and install the engaging component 240.

[0055] Among them, the quick-release arm 243 includes a locking portion 2431. The locking portion 2431 is generally semi-circular, and the center of the locking portion 2431 does not coincide with the hinge point of the quick-release arm 243. Thus, the distances from multiple different positions on the outer wall of the locking portion 2431 to the hinge point are different. When the quick-release arm 243 rotates, when the outer wall with a larger distance from the hinge point abuts against the deformation portion 2412, the deformation portion 2412 is forced to move towards the fixed portion 2411, thereby making the engaging hole 2413 smaller. When the outer wall with a larger distance disengages from the deformation portion 2412, the deformation portion 2412 resumes its original shape, thereby making the engaging hole 2413 larger. Among them, the notch 2414 provides a deformation space for the deformation portion 2412. The quick-release arm 243 further includes an operation portion 2432, and the operator operates the operation portion 2432 to change the position of the locking portion 2431.

[0056] In a more preferred embodiment of this example, the engaging ring 241 is provided with a deformation groove 2415 communicating with the engaging hole 2413 on the opposite side of the notch 2414. With such a setting, an additional deformation portion 2412 position is provided for the engaging ring 241. When the deformation portion 2412 is subjected to a large force, the deformation groove 2415 also deforms accordingly, thereby sharing a part of the deformation amount, thus avoiding excessive deformation of the deformation portion 2412 resulting in cracks or even damage.

[0057] In another more preferred embodiment, an operation gap is left between the deformation portion 2412 and the quick-release arm 243. The operation gap facilitates the operator to insert a finger between the deformation portion 2412 and the quick-release arm 243 to lock or loosen the quick-release arm 243, thereby further improving the convenience for the operator to disassemble and replace the spring teeth 220.

[0058] Specifically, the operation gap is left between the operation portion 2432 and the deformation portion 2412.

[0059] In another more preferred embodiment, a stop portion 2416 is provided on the deformation portion 2412. When the quick-release arm 243 is locked, the stop portion 2416 stops the quick-release arm 243 to limit the further rotation of the quick-release arm 243. With such a setting, the deformation portion 2412 can prevent the excessive rotation of the quick-release arm 243, thus ensuring that the deformation portion 2412 will not be damaged due to excessive deformation.

[0060] In this embodiment, the drive shaft 100 is provided with a plurality of pin holes corresponding to the spring tooth component 200, and the spring tooth component 200 further includes a pin shaft 120, and the free end 121 of the pin shaft 120 sequentially passes through the fixing seat 210 and the pin hole and extends out of the pin hole. The clamping component 110 is a gasket, and the clamping component 110 is sleeved on the free end 121 of the pin shaft 120, and a limiting hole 122 is provided on the free end 121, and a limiting pin 111 is installed in the limiting hole 122, and the limiting pin 111 is stopped on the side of the clamping component 110 away from the drive shaft 100.

[0061] In this way, by providing a plurality of pin holes corresponding to the spring-tooth components 200 on the driving shaft 100, the installation position of each spring-tooth component 200 on the driving shaft 100 is determined, thereby avoiding manual determination of the position of the spring-tooth component 200 or disassembly of the spring tooth 220 affecting the position of the spring-tooth component 200 and affecting the film picking efficiency.

[0062] In another more preferred embodiment, both ends of the fixed shaft 230 are provided with engaging grooves 231, and the engaging ring 241 is engaged in the engaging grooves 231. By providing the engaging grooves 231, when the engaging ring 241 is engaged on the fixed shaft 230, the groove wall of the engaging groove 231 plays a role in limiting the locking engaging ring 241 from being separated from the fixed shaft 230, thereby better preventing the locking engaging ring 241 from being separated from the fixed shaft 230.

[0063] Embodiment 2:

[0064] Based on Example 1, Figure 4 , Figure 5 , Figure 7 , Figure 8 As shown, in the present embodiment, the spring tooth component 200 further includes a quick-release shaft assembly 300 and a fan-shaped member 211. One end of the fan-shaped member 211 is hinged on the fixed seat 210, and a positioning hole 2111 is provided on the other end. Both ends of the quick-release shaft assembly 300 are positioned on the fixed seat 210. The quick-release shaft assembly 300 passes through the positioning hole 2111 to limit the fan-shaped member 211 on the fixed seat 210. A clamping hole 212 is formed between the fan-shaped member 211 and the fixed seat 210, and the clamping hole 212 clamps the drive shaft 100.

[0065] Among them, the quick-release shaft assembly 300 includes a first shaft body 310, a second shaft body 320 and a spring 330. One end of the first shaft body 310 can be slidably limited in the second shaft body 320. The spring 330 is pre-tightened on the first shaft body 310 and the second shaft body 320. The first shaft body 310 and the second shaft body 320 slide relative to each other to change the length of the quick-release shaft assembly 300, so that one end of the quick-release shaft assembly 300 is separated from the fixed seat 210.

[0066] At this time, the quick-release shaft assembly 300 can be disassembled from the fixed seat 210. Furthermore, the sector piece 211 is disengaged from the limit of the fixed seat 210. After the elastic tooth component 200 further removes the clamping component 110, the elastic tooth component 200 can be removed from the drive shaft 100.

[0067] When installing the elastic tooth component 200, pass the quick-release shaft assembly 300 through the positioning hole 2111. One end of the quick-release shaft assembly 300 is positioned on the fixed seat 210. By the relative sliding of the first shaft body 310 and the second shaft body 320, the other end of the quick-release shaft assembly 300 is positioned on the fixed seat 210, thereby installing the elastic tooth component 200 on the drive shaft 100.

[0068] Wherein, holes (not shown) for positioning the quick-release shaft assembly 300 are provided on both sides of the fixed seat 210. The fixed seat 210 is further provided with a semi-hole-shaped groove, and a clamping hole 212 is formed between the groove and the sector piece 211.

[0069] With such a setting, the elastic tooth component 200 is installed on the drive shaft 100 through the sector piece 211 and the quick-release shaft assembly 300. Since it is clamped on the drive shaft 100 through the sector piece 211 and the fixed seat 210, multiple elastic tooth components 200 do not need to be sleeved on the drive shaft 100 for installation in sequence. On the one hand, the elastic tooth components 200 can be installed individually, making the installation operation more convenient. On the other hand, the elastic tooth components 200 can also be disassembled individually, and their maintenance and replacement are easier.

[0070] In a preferred embodiment, there are two sector pieces 211, and the two sector pieces 211 are respectively arranged on the left and right sides of the fixed seat 210.

[0071] With such a setting, the elastic component can be installed on the drive shaft 100 more stably, improving the stability of the elastic component.

[0072] It can be understood that there can also be only one sector piece 211. One sector piece 211 is hinged to the middle of the fixed seat 210, and the first shaft body 310 and the second shaft body 320 are respectively positioned on both sides of the fixed seat 210.

[0073] In a preferred embodiment, the sector piece 211 includes a first sector piece 2112 and a second sector piece 2113. A pivoting portion is provided on the side of the fixed seat 210. The first sector piece 2112 and the second sector piece 2113 are hinged to both sides of the pivoting portion, and a positioning column is connected between the first sector piece 2112 and the second sector piece 2113.

[0074] With such a setting, through the hinge of the first sector piece 2112 and the second sector piece 2113 of the sector piece 211, the left and right forces of the hinge of the sector piece 211 are balanced, avoiding the hinge position being damaged due to the large torque borne by the hinge point caused by the unilateral force of the sector piece 211.

[0075] Embodiment 3:

[0076] As Figures 1 to 9 shown, the present utility model further provides a residual film picking-up device, which includes a picking-up drum 400, and a plurality of groups of tooth mechanisms 1 described in any one of the technical solutions in Embodiments 1 and 2 are circumferentially installed on the picking-up drum 400.

[0077] Wherein, circular rib plates 410 are installed on both sides of the picking-up drum 400, both sides of the tooth mechanism 1 are rotatably installed on the circular rib plates 410, the circular rib plates 410 are fixedly connected to the main shaft of the picking-up drum 400 through flanges, the driving mechanism drives the main shaft to rotate, the circular rib plates 410 rotate accordingly, and the tooth mechanism 1 rotates accordingly so that the teeth 220 are inserted into the soil to hook the residual film and are taken out of the soil with the residual film. The residual film on the teeth 220 is separated and collected from the teeth 220 by a demolding mechanism after the teeth 220 are taken out of the soil.

[0078] A cam slideway 420 is further installed on the circular rib plate 410, and the driving shaft 100 of the tooth mechanism 1 is connected to the cam slideway 420 through a crank arm 430. One end of the crank arm 430 is connected to the driving shaft 100 in a keyway manner, so that the two rotate together. A pulley 431 is installed at the other end of the crank arm 430, and the pulley 431 is slidably placed in the cam slideway 420. During the movement process, since one end of the crank arm 430 moves in a circular motion and the other end cooperates with the cam slideway 420 to move, the angle of the crank arm 430 changes during the movement process. This kind of angle change is transmitted to the tooth mechanism 1 and the teeth 220 through the keyway connection between the crank arm 430 and the driving shaft 100, so as to realize that the inclination angle of the teeth 220 with respect to the ground plane is different at each stage during the movement process. When the teeth 220 are inserted into the soil, the teeth 220 are in a substantially vertical state, so as to facilitate the teeth 220 to penetrate the residual film when piercing into the soil. After the teeth 220 penetrate the residual film, the teeth 220 gradually tilt so as to keep the residual film on the teeth 220. When the teeth 220 move to a certain position, the teeth 220 are in a substantially horizontal state, which is convenient for the demolding mechanism to separate the residual film.

[0079] The above is only the specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that the present utility model includes but is not limited to the content described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present utility model will be included in the scope of the claims.

Claims

1. A spring tooth mechanism, comprising a drive shaft and a plurality of spring tooth components mounted on the drive shaft, characterized in that, The spring tooth component includes a fixed seat, a spring tooth, a fixed shaft and a clamping assembly, the spring tooth includes a picking portion, a cantilever portion and a spiral portion connected between the picking portion and the cantilever portion, the fixed seat is installed on the driving shaft, the spiral portion is sleeved on the fixed shaft, the fixed shaft is rotatably installed on the fixed seat, the clamping assembly is detachably clamped on both ends of the fixed shaft extending out of the fixed seat, a clamping component is provided on the driving shaft, the cantilever portion is clamped between the clamping component and the driving shaft, and the picking portion extends out of the fixed seat.

2. The elastic tooth mechanism according to claim 1, characterized in that, The locking assembly includes a locking ring, an articulated shaft and a quick-release arm. The locking ring includes a fixed portion and a deformable portion, a locking hole for the fixed shaft to pass through is formed between the two, one ends of the two are connected, and a gap connecting the locking hole is formed between the other ends of the two. One end of the articulated shaft passes through the deformable portion and the gap and is connected to the fixed portion. The quick-release arm is hinged on the other end of the articulated shaft. The locking or loosening of the quick-release arm changes the size of the gap so that the locking hole clamps or loosens the fixed shaft.

3. The elastic tooth mechanism according to claim 2, characterized in that, A stopper is provided on the deformation portion, and when the quick release arm is locked, the stopper stops the quick release arm to restrict the quick release arm from further rotation.

4. The elastic tooth mechanism according to claim 2, characterized in that, An operating gap is left between the deformation portion and the quick-release arm.

5. The elastic tooth mechanism according to claim 2, characterized in that, The clamping ring is provided with a deformation groove communicating with the clamping hole on the opposite side of the notch.

6. The elastic tooth mechanism according to claim 1, characterized in that The drive shaft is provided with a plurality of pin holes corresponding to the elastic tooth component, the elastic tooth component also includes a pin shaft, the free end of the pin shaft passes through the fixing seat and the pin hole in sequence and extends out of the pin hole, the clamping component is a gasket, the clamping component is sleeved on the free end, a limiting hole is provided on the free end, a limiting pin is installed in the limiting hole, and the limiting pin is stopped at the end of the clamping component away from the drive shaft.

7. The elastic tooth mechanism according to claim 1, characterized in that, The spring tooth component also includes a quick-release shaft assembly and a fan-shaped member, one end of the fan-shaped member is hinged to the fixing seat, and the other end is provided with a positioning hole, both ends of the quick-release shaft assembly are positioned on the fixing seat, the quick-release shaft assembly passes through the positioning hole to limit the fan-shaped member on the fixing seat, and a clamping hole is formed between the fan-shaped member and the fixing seat, and the clamping hole clamps the drive shaft; The quick-release shaft assembly includes a first shaft body, a second shaft body and a spring. One end of the first shaft body can be slidably limited in the second shaft body. A pre-tightened spring is sleeved between the first shaft body and the second shaft body. The first shaft body and the second shaft body slide relative to each other to change the length of the quick-release shaft assembly, so that one end of the quick-release shaft assembly is separated from the fixed seat.

8. The elastic tooth mechanism according to claim 7, characterized in that, There are two fan-shaped parts, and the two fan-shaped parts are respectively arranged on the left and right sides of the fixing seat.

9. The elastic tooth mechanism according to claim 7, characterized in that, The fan-shaped member includes a first fan-shaped member and a second fan-shaped member. A pivot portion is provided on a side of the fixing seat. The first fan-shaped member and the second fan-shaped member are hinged on both sides of the pivot portion. A positioning column is connected between the first fan-shaped member and the second fan-shaped member.

10. The residual film picking-up device comprises a picking-up roller, characterized in that, A plurality of sets of spring tooth mechanisms as claimed in any one of claims 1 to 9 are circumferentially mounted on the pickup roller.

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