Connector for folding rotary cultivator

Abstract

The utility model discloses a connector for a folding type rotary cultivator, which comprises a first connecting disc, a second connecting disc and a third connecting disc, the mushroom nails are arranged on the first connecting disc at intervals in the circumferential direction of the first connecting disc; the second connecting disc is in a disc shape, and the second connecting disc and the first connecting disc are coaxially arranged; a plurality of cylindrical holes are formed in the second connecting disc, and the cylindrical holes and the mushroom nails are arranged in a one-to-one correspondence mode; the tip ends of the mushroom nails are arranged towards the second connecting disc; and when the first connecting disc is jointed with the second connecting disc, the mushroom nails are inserted into the corresponding cylindrical holes. According to the connector for the folding rotary cultivator, the connection stability of a folded mechanism and an unfolded mechanism of the rotary cultivator can be guaranteed, the power transmission effect is guaranteed, and the connector can be conveniently disconnected during folding.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of mechanical device for ploughing, especially relates to a connector for folding rotary cultivator. BACKGROUND

[0002] At present, the rotary cultivator on the market mainly adopts through shaft type or middle gearbox to drive left and right half shafts to rotate to realize rotary cultivation function, and has the characteristics of small working area and low working efficiency. At the same time, the rotary cultivator based on through shaft type or middle gearbox has poor versatility, and cannot effectively improve single working area.

[0003] Increasing the length or number of rotary cultivation shafts of the rotary cultivator can improve the single working area of the rotary cultivator, and increasing the number of rotary cultivation shafts needs to set up a suspension beam at both ends of the cross beam. However, since the suspension beam is set up, the size of the rotary cultivator exceeds the road transportation size requirement during road transportation, so it is necessary to set up a folding mechanism to fold the suspension beam of the rotary cultivator during road transportation.

[0004] In order to ensure the power transmission between the folded mechanism and the non-folded mechanism, a connector needs to be set up. However, the existing connector often cannot ensure stable power transmission due to poor connection stability, or can ensure connection stability but cannot be directly disconnected during folding, and needs to set up a separate clutch driving mechanism to be disconnected. UTILITY MODEL CONTENTS

[0005] The utility model also provides a connector for folding rotary cultivator, which can ensure the connection stability of the folded mechanism and the non-folded mechanism of the rotary cultivator, ensure the power transmission effect, and facilitate disconnection during folding.

[0006] The utility model provides a technical scheme:

[0007] A connector for folding rotary cultivator, comprising:

[0008] A first connecting disc, which is disc-shaped;

[0009] A plurality of mushroom nails, which are arranged on the first connecting disc in a circumferential direction and are spaced apart;

[0010] A second connecting disc, which is disc-shaped and coaxially arranged with the first connecting disc; a plurality of cylindrical holes are formed in the second connecting disc, and the cylindrical holes are arranged one by one corresponding to the mushroom nails;

[0011] Wherein, the tip of the mushroom nail is arranged towards the second connecting disc;

[0012] When the first connecting disc and the second connecting disc are engaged, the mushroom nail is inserted into the corresponding cylindrical hole.

[0013] Preferably, a rubber ring is sleeved on the mushroom-shaped nail, and the mushroom-shaped nail is in contact with the hole wall of the cylindrical hole through the rubber ring.

[0014] Preferably, the mushroom-shaped nail is fixedly connected to the first connecting disc through a bolt.

[0015] Preferably, the cylindrical hole is provided with a circular chamfer close to the end face of the first connecting disc.

[0016] Preferably, the plurality of mushroom-shaped nails are uniformly and spacedly arranged along the circumference of the first connecting disc.

[0017] Preferably, the second connecting disc is provided with a central hole, and the central hole is provided with an internal spline.

[0018] Preferably, the first connecting disc and the second connecting disc have the same disc size.

[0019] The utility model discloses the beneficial effects are:

[0020] The connector provided by the utility model for the folding rotary cultivator can guarantee the connection stability of the folded mechanism and the non-folded mechanism of the rotary cultivator, guarantee the power transmission effect, and facilitate disconnection during folding. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model discloses the overall structure schematic diagram of folding rotary cultivator.

[0022] Figure 2 The utility model discloses the main, deputy speed reducer and drive mechanism schematic diagram.

[0023] Figure 3 The utility model discloses the drive mechanism schematic diagram.

[0024] Figure 4 The utility model discloses the main speed reducer and first rotary cultivator knife axle drive structure drawing.

[0025] Figure 5 The utility model discloses the first (second) rotary cultivator knife axle structure schematic diagram.

[0026] Figure 6 The utility model discloses the connector structure diagram.

[0027] Figure 7 The utility model discloses the connector unfolding structure schematic diagram.

[0028] Figure 8 The utility model discloses the structure schematic diagram of rotary cultivator folding mechanism.

[0029] Figure 9The connecting rod structure schematic view of the utility model.

[0030] Figure 10 The folding mechanism connection schematic view of the utility model.

[0031] Figure 11 The folding state schematic view of the folding rotary cultivator of the utility model. DETAILED DESCRIPTION

[0032] The utility model makes further detailed description in combination with the drawings, so that the person skilled in the art can implement according to the description text.

[0033] The utility model provides a connector for folding rotary cultivator, is used for realizing the connection and disconnection of the folded mechanism and the non-folded mechanism of rotary cultivator.

[0034] As Figures 1-5 Shown, in this embodiment, the folding rotary cultivator applying the connector mainly includes: suspension lifting system 101, main transmission shaft 102, driving bevel gear 103, driven bevel gear 103a, main reduction gearbox 104, rotary cultivator crossbeam 105, two suspension beams 105a, two auxiliary reduction boxes 106, two transmission shafts 107, two first rotary cultivator blade shafts 108, two second rotary cultivator blade shafts 109 and two folding mechanisms 110.

[0035] The folding rotary cultivator is supported at the tail of tractor through suspension lifting system 101, and can automatically adjust the ground clearance according to the demand of driving or rotary cultivator land, engine output power is connected with main transmission shaft 102 through cross axle structure of transmission box output shaft, guarantees the space power input demand of the rotary cultivator.

[0036] The crossbeam 105 is a frame structure and is arranged horizontally. The main reduction gearbox 104 is fixed and supported in the middle position of the crossbeam 105 by a bolt structure, and the left and right of the crossbeam 105 is arranged in a symmetrical structure. The tail end of the main transmission shaft 102 is provided with a driving bevel gear 103, and a driven bevel gear 103a is fixed on a horizontal shaft 1041 in the main reduction gearbox 104. The horizontal shaft 1041 is arranged along the length direction (transversely) of the crossbeam 105, and the both ends of the horizontal shaft 1041 are penetrated and supported on the upper part of the shell of the main reduction gearbox 104 through a bearing structure. The main transmission shaft 102 drives the driven bevel gear 103a in the main reduction gearbox 104 to rotate through the driving bevel gear 103 installed at the tail end. The main and driven bevel gear structure not only can reduce speed and increase torque, but also can change the power transmission direction by 90 degrees. A first cylindrical gear 1042 is fixed on the horizontal shaft 1041, and the first cylindrical gear 1042 is in external meshing transmission with a second cylindrical gear 1043. The second cylindrical gear 1043 is assembled on a pin shaft 1043a through a bearing structure, and the both ends of the pin shaft 1043a are fixed on the both sides of the middle position of the shell of the main reduction gearbox 104. The second cylindrical gear 1043 is in external meshing transmission with a third cylindrical gear 1044.

[0037] The third cylindrical gear 1044 is connected with the spline shaft at the left end of the first rotary tiller shaft 108 on the right side thereof and the spline shaft at the right end of the first rotary tiller shaft 108 on the left side thereof through the setting of an internal spline structure, and the two first rotary tiller shafts 108 rotate synchronously. The other ends of the two first rotary tiller shafts 108 are supported on two first shaft supports 108a through the setting of a bearing structure; wherein the two first shaft supports 108a are fixed on the both ends of the crossbeam 105 through bolts.

[0038] When the driving bevel gear 103 drives the driven bevel gear 103a to rotate, the coaxial first cylindrical gear 1042 is driven to rotate, and then the second cylindrical gear 1043 and the third cylindrical gear 1044 are driven to rotate finally to drive the two first rotary tiller shafts 108 to rotate synchronously.

[0039] As shown in Figures 1-3 two suspension beams 105a are arranged at the both ends of the crossbeam 105, and two auxiliary reduction gearboxes 106 are fixed and supported on the inner ends (the ends close to the crossbeam 105) of the two suspension beams 105a through a bolt structure.

[0040] The both ends of the horizontal shaft 1041 in the main reduction gearbox 104 are connected with the inner ends of two transmission shafts 107 through a cross yoke 1071 structure respectively. As shown in Figure 3As shown, the outer end of the transmission shaft 107 is connected with the connecting shaft 202, the connecting shaft 202 penetrates the support plate 201 through the bearing support 203, the support plate 201 is longitudinally fixed on the cross beam 105 of the rotary cultivator, which guarantees the stable support of the transmission shaft 107 and the connecting shaft 202 during power transmission, and the transmission shaft 107, the support plate 201, the connecting shaft 202 and the bearing support 203 jointly constitute a transmission mechanism. The outer end of the connecting shaft 202 is provided with a connector 204, the outer end of the connector 204 is connected with a spline shaft 205, the spline shaft 205 penetrates and is supported in the upper end of the secondary reduction gearbox 106 through the bearing structure arranged at both ends. The first cylindrical gear 1061 of the secondary reduction gearbox is fixed on the spline shaft 205 and externally meshes with the second cylindrical gear 1062 of the secondary reduction gearbox, the second cylindrical gear 1062 of the secondary reduction gearbox is assembled on the pin shaft 1062a through the bearing structure, and the pin shaft 1062a is fixed at the middle position of the two sides of the secondary reduction gearbox 106, and the second cylindrical gear 1062 of the secondary reduction gearbox externally meshes with the third cylindrical gear 1063 of the secondary reduction gearbox for transmission.

[0041] The third cylindrical gear 1063 of the secondary reduction gearbox is connected with the spline shaft at the inner end of the second rotary cultivator shaft 109 through the inner spline structure, and drives the second rotary cultivator shaft 109 to rotate. The outer end of the second rotary cultivator shaft 109 is supported on the second cutter shaft support 109a through the bearing structure, and the second cutter shaft support 109a is fixed on the outer end of the suspension beam 105a through bolts.

[0042] When the driving bevel gear 103 drives the driven bevel gear 103a to rotate, the cross shaft 1041 is driven to rotate, and the power is transmitted to the first cylindrical gear 1061 in the secondary reduction gearbox 106 through the spider 1071, the transmission shaft 107, the connecting shaft 202, the connector 204, the spline shaft 205, and then is transmitted to the second cylindrical gear 1062 and the third cylindrical gear 1063 of the secondary reduction gearbox, and finally drives the second rotary cultivator shaft 109 to rotate. The rotary cultivator shaft structure is shown in Figure 5 .

[0043] Since the rotary cultivator is arranged in a symmetrical structure, the power is transmitted to the lower end gear in the secondary reduction gearbox 106 through the two transmission shafts 107, and the final drive of the two second rotary cultivator shafts 109 is synchronized.

[0044] The rotary cultivator adopts a double-shaft transmission scheme, which can ensure the power and stability of the two second rotary cultivator shafts 109 located outside the cross beam 105 during the rotary cultivation of the land, and avoid the problems of insufficient power at the end of the rotary cultivator shaft and poor balance during single-shaft power transmission.

[0045] Two folding mechanisms 110 are arranged in one-to-one correspondence with two cantilever beams 105a, and are used to connect the corresponding cantilever beam 105a and the cross beam 105. When the rotary tiller is in a working state, the two folding mechanisms 110 are unfolded, the connector 204 is connected, the transmission mechanism is connected with the input end of the secondary reduction box 106, and the two first rotary tiller shafts 108 and the two second rotary tiller shafts 109 rotate synchronously; when the rotary tiller is in a non-working state, the folding mechanism 110 is folded, the connector 204 is disconnected, the transmission mechanism is disconnected with the input end of the secondary reduction box 106, and the two cantilever beams 105a are flipped together with the second rotary tiller shaft 109 and the secondary reduction box 106 to above the cross beam 105. By arranging the folding mechanism 110, the size parameter requirement of the rotary tiller suspension during normal road driving can be met.

[0046] In the embodiment, the connector 204 is structured as shown in Figure 6 and 7 The connector 204 is connected by a plurality of mushroom nails 206 (arranged uniformly on the disc in a circle) fixed on the circumference of the first connecting disc 2041. The first connecting disc 2041 is fixedly connected to the end (right end) of the connecting shaft 202, and the inner end (close to the end of the connecting shaft 202) of the first connecting disc 2041 is supported by the bearing support 203 fixed in the support plate 201, and a cylindrical bearing is arranged in the bearing support 203 to ensure the stability of the first connecting disc 2041 during rotational connection. The mushroom nails 206 are limited in the assembly position by the assembly nuts on the inner end surface (end surface facing the connecting shaft 202) of the first connecting disc 2041. The second connecting disc 2042 of the connector 204 is fixedly connected to the left end of the spline shaft 205, and the spline shaft 205 is supported at the upper end in the secondary reduction box 106 through the bearing structure arranged at both ends. The second connecting disc 2042 is provided with a cylindrical hole (through hole) corresponding to the mushroom nail 206, the tip of the mushroom nail 206 faces the cylindrical hole of the second connecting disc 2042, and the inner end surface (close to the first connecting disc 2041 side) of the cylindrical hole is provided with a circular chamfer, so as to facilitate the matching connection of each mushroom nail 206 and the corresponding cylindrical hole, and facilitate the separation of the mushroom nail 206 and the second connecting disc 2042. A rubber ring 2061 is arranged at the joint of the mushroom nail 206 and the second connecting disc 2042 to alleviate the impact when the first connecting disc 2041 and the second connecting disc 2042 are connected, and to ensure smooth combination. When the connector 204 is in a connected state, the mushroom nail 206 ensures the reliability of the first connecting disc 2041 and the second connecting disc 2042, so that the second connecting disc 2042 rotates synchronously with the first connecting disc 2041, and the inner spline arranged in the center hole of the second connecting disc 2042 drives the spline shaft 205 to rotate synchronously. When the second connecting disc 2042 of the connector 204 is folded upward with the spline shaft 205, it can be automatically separated from the mushroom nail 206.

[0047] The connector 204 adopts a double-disc connection mode, which can effectively improve the stable connection of the transmission mechanism and the secondary gear box and guarantee the power transmission effect, and is convenient for disconnection during folding.

[0048] In another embodiment, the folding structure of the rotary cultivator is as shown in Figure 8 and 9 The sleeve 112 is provided outside the support shaft 111 and can rotate around the support shaft 111. The two ends of the sleeve 112 are respectively supported by a pair of first support frames 113 fixed on the front and rear sides of the cross beam 105 and a pair of second support frames 114 fixed on the front and rear sides of the suspension beam 105a, and the two pairs of first support frames 113 and second support frames 114 can rotate around the sleeve 112. The two ends of the support shaft 111 extend out of the sleeve 112 by a length, and the front end (close to the tractor end) is used for mounting the connecting rod 115. The lower end sleeve 115a of the connecting rod 115 is assembled on the front end of the support shaft 111 through a needle bearing and can freely swing around it. The upper end sleeve 115b of the connecting rod 115 is assembled on the connecting rod pin shaft 116 through a needle bearing and can freely swing around it. The first piston rod 117a of the first hydraulic cylinder 117 and the second piston rod 118a of the second hydraulic cylinder 118 are arranged in a spaced manner, and the upper ends of the first piston rod 117a and the second piston rod 118a are hinged to the connecting rod pin shaft 116 through a circular support ring and can freely swing around it. The lower ends of the first hydraulic cylinder 117 and the second hydraulic cylinder 118 are respectively hinged to the front sides of the cross beam 105 and the suspension beam 105a through support pin shafts and support seat structures and can swing around the support pin shafts.

[0049] When the tractor is driving on the road, the suspension beams 105a at both ends of the rotary cultivator are folded through the folding structure 110. The oil tank in the hydraulic system is connected to the first upper oil port 1171, the first lower oil port 1172 of the first hydraulic cylinder 117, and the second upper oil port 1181, the second lower oil port 1182 of the second hydraulic cylinder 118 through oil pipes. As Figure 10As shown, when the hydraulic system is started to fold the rotary cultivator, the hydraulic oil in the oil tank flows into the first upper oil port 1171 of the first hydraulic cylinder 117 and the second upper oil port 1181 of the second hydraulic cylinder 118 through the oil pipe. As the oil flows into the upper chamber of the first hydraulic cylinder 117 and the second hydraulic cylinder 118, the oil pressure in the upper chamber increases, which drives the first piston rod 117a and the second piston rod 118a to compress into the hydraulic cylinder. At the same time, the oil in the lower chamber of the first hydraulic cylinder 117 and the second hydraulic cylinder 118 flows back to the oil tank through the first lower oil port 1172 and the second lower oil port 1182, respectively. Under the action of the pressure difference between the upper chamber and the lower chamber of the hydraulic cylinder, the piston rod is compressed relative to the hydraulic cylinder. The two end suspending beams 105a change in compression with the first hydraulic cylinder 117 relative to the first piston rod 117a and the second hydraulic cylinder 118 relative to the second piston rod 118a, and rotate upward together with the connecting rod 115 around the support shaft 111 by a certain angle. The structural parameters of the first hydraulic cylinder 117 and the second hydraulic cylinder 118 and the first piston rod 117a and the second piston rod 118a are matched to satisfy that the suspending beam 105a can be folded upward by 180 degrees, until the second cutter shaft support 109a at the outer end of the suspending beam 105a falls on the support assembly 101a at the top of the suspension lifting system 101, as shown. Figure 11 As shown, the first connecting disc 2041 and the second connecting disc 2042 of the connector 204 are automatically separated.

[0050] When the tractor cultivates the land in the field, the two end suspending beams 105a of the rotary cultivator are unfolded through the folding mechanism. The oil tank in the hydraulic system is connected to the first upper oil port 1171, the first lower oil port 1172 of the first hydraulic cylinder 117, and the second upper oil port 1181, the second lower oil port 1182 of the second hydraulic cylinder 118 through the oil pipe. Figure 10 As shown, when the hydraulic system is started to unfold the rotary cultivator, the hydraulic oil in the oil tank flows into the first lower oil port 1172 of the first hydraulic cylinder 117 and the second lower oil port 1182 of the second hydraulic cylinder 118 through the oil pipe. As the oil flows into the lower chamber of the first hydraulic cylinder 117 and the second hydraulic cylinder 118, the oil pressure in the lower chamber increases, which drives the first piston rod 117a and the second piston rod 118a to stretch out. At the same time, the oil in the upper chamber of the first hydraulic cylinder 117 and the second hydraulic cylinder 118 flows back to the oil tank through the first upper oil port 1171 and the second upper oil port 1181, respectively. Under the action of the pressure difference between the upper chamber and the lower chamber of the hydraulic cylinder, the piston rod is stretched out relative to the hydraulic cylinder. The two end suspending beams 105a change in stretching with the first hydraulic cylinder 117 and the second hydraulic cylinder 118, and stretch out together with the connecting rod 115 around the support shaft 111 by 180 degrees, until the rotary cultivator returns to the initial unfolded position. In this process, the cylindrical hole on the second connecting disc 2042 of the connector 204 automatically matches and connects with the mushroom pin 206 of the first connecting disc 2041, realizing the synchronous rotation of the connecting shaft 202 and the spline shaft 205.

[0051] The connector for the folding rotary cultivator can guarantee the connection stability of the folded mechanism and the non-folded mechanism of the rotary cultivator, guarantees the power transmission effect, and is convenient to disconnect during folding. The application of the connector is not only limited to the folding rotary cultivator, but also can be used for selective connection between other mechanisms requiring power transmission.

[0052] Although the embodiments of the present application have been disclosed as above, they are not limited to the application listed in the specification and the embodiments, and can be fully applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized, and therefore the present application is not limited to specific details and the figures shown and described herein.

Claims

1. A coupler for a folding rotary cultivator, characterized in that The utility model relates to a kind of mushroom nail connection disc, including: First connecting disc, it is discoid; Multiple mushroom nails, it is spaced along the circumference of the first connecting disc and is arranged on the first connecting disc; Second connecting disc, it is discoid, and it is coaxially arranged with the first connecting disc;Multiple cylindrical holes are opened on the second connecting disc, and the cylindrical hole is arranged one by one with the mushroom nail; Wherein, the tip of the mushroom nail is arranged towards the second connecting disc; When the first connecting disc is engaged with the second connecting disc, the mushroom nail is inserted into its corresponding cylindrical hole.

2. The coupler for a folding rotary cultivator of claim 1, wherein Rubber ring is set on the mushroom nail, and the hole wall of the cylindrical hole is contacted by the rubber ring.

3. The coupler for a folding rotary cultivator of claim 2, wherein, The mushroom nail is fixedly connected on the first connecting disc by bolt.

4. The coupler for a folding rotary cultivator according to any one of claims 1 to 3, characterized in that The cylindrical hole is provided with a circular chamfer close to the end face of the first connecting disc.

5. The coupler for a folding rotary cultivator of claim 4, wherein, The multiple mushroom nails are evenly spaced along the circumference of the first connecting disc.

6. The coupler for a folding rotary cultivator of claim 5, wherein, The second connecting disc is provided with an inner spline in the center hole.

7. The coupler for a folding rotary cultivator of claim 6, wherein, The disc surface size of the first connecting disc and the second connecting disc is same.

Images