A grass grid non-destructive wheel system for desert sand compaction and greening

Abstract

The present invention discloses a grass grid non-destructive wheel system for sand compaction and greening in deserts, comprising: a wheel portion, on which a plurality of track wheel groups are circumferentially arranged, the plurality of track wheel groups constitute the outer contour shape of the wheel portion, and a synchronous gear is fixed on the wheel portion; a transmission box is provided with a power input shaft, a wheel portion power output shaft and a track wheel group power output shaft, the wheel portion power output shaft is transmission-connected with the synchronous gear, and the track wheel group power output shaft is transmission-connected with the plurality of track wheel groups; a shift fork power switching assembly is used to control the transmission connection relationship between the power input shaft and the wheel portion power output shaft and the track wheel group power output shaft, when the wheel portion power output shaft outputs power, the synchronous gear drives the plurality of track wheel groups on the wheel portion to rotate circumferentially as a whole; when the track wheel group power output shaft outputs power, the plurality of track wheel groups on the wheel portion remain in position and the crawlers on the track wheel groups rotate, and the present invention will not crush and damage the planted grass grids during operation.

Description

Technical Field

[0001] The invention belongs to the field of wheels and related driving technologies, and in particular relates to a grass grid non-destructive wheel system for sand compaction and greening in deserts. Background Art

[0002] Desertification has become the biggest ecological problem facing mankind, which has a great impact on human society. It not only affects human survival and life, but also hinders the development of the national economy. In order to deal with this problem, there are many existing methods mainly used for desertification, such as biological sand fixation, chemical sand fixation and sand barrier sand fixation. Among them, sand barrier sand fixation is the most mature and common prevention and control method in the current wind and sand fixation design. That is, by establishing sand barriers, the wind and sand are fixed, blocked, transported and guided, so as to achieve the effect of wind and sand fixation. The most representative sand barrier is the grass grid sand barrier. Laying grass grids is an effective means of preventing wind and sand fixation and preventing land desertification.

[0003] At present, the laying of grass grids and planting of green plants in deserts are mainly done manually, but the efficiency is low, the economy is poor and it is not suitable for large-scale laying operations.

[0004] Therefore, in order to solve the problem of laying and planting grass grids, various mechanical equipment for laying grass grids have been developed. The rows of straw curtains for laying grass grids can be divided into vertical straw in the same direction as the direction of travel (referred to as "vertical straw" in the text) and horizontal straw perpendicular to the direction of travel (referred to as "horizontal straw" in the text). However, when laying vertical straw, existing mechanical equipment will always cross and crush the horizontal straw, causing serious damage to the grass grid system, which greatly shortens the effective life of the grass grid against wind and sand in practice. At the same time, after the grass grids are laid, the final link of wind and sand fixation is to plant green plants suitable for surviving in the harsh environment of the desert. In the traditional mechanized operation process of planting green plants, the grass grids will also be crushed, which will inevitably cause secondary damage to the grass grids.

[0005] Therefore, how to provide a wheel system that can be applied to a grass grid laying vehicle and a desert greening vehicle and will not damage the grass grid is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0006] In view of this, the present invention provides a grass grid non-destructive wheel system for desert sand compaction and greening, which can avoid serious damage to the grass grid during the laying of the grass grid and greening process and is easy to use.

[0007] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a grass grid non-destructive wheel system for desert sand compaction and greening, which comprises:

[0008] A wheel part, wherein a plurality of track wheel groups are arranged circumferentially on the wheel part, wherein the plurality of track wheel groups constitute the outer contour of the wheel part, and there are gaps between adjacent track wheel groups for avoiding the horizontal straw curtains, and a synchronous gear is fixed on the wheel part;

[0009] A transmission box, which is arranged on one side of the wheel part, and is provided with a power input shaft, a wheel part power output shaft and a track wheel group power output shaft, wherein the power input shaft is used for transmission connection with an external power source, the wheel part power output shaft is transmission connected with a synchronous gear, and the track wheel group power output shaft is transmission connected with multiple track wheel groups;

[0010] A shift fork power switching assembly, which is connected to the transmission box and controls the transmission connection relationship between the power input shaft and the power output shaft of the wheel part and the power output shaft of the track wheel group. When the power output shaft of the wheel part outputs power, the synchronous gear drives the multiple track wheel groups on the wheel part to rotate circumferentially as a whole, and the gaps between adjacent track wheel groups are used to avoid the planted grass grids when pressing sand and planting green; when the power output shaft of the track wheel group outputs power, the positions of the multiple track wheel groups on the wheel part remain unchanged and the tracks on the track wheel groups rotate.

[0011] The technical effect of the present invention is that the wheel part can rotate as a whole, and can directly use the track wheel group to walk. When the wheel part moves to the planted horizontal straw mat, the fork power switching assembly is used to switch the power output, so that the power output shaft of the wheel part outputs power. At this time, multiple groups of track wheel groups will rotate circumferentially as a whole, and the avoidance gaps between adjacent track wheel groups are used to avoid the planted horizontal straw mats, ensuring that the wheel part passes through the planted straw mats. When there is no interference from the straw mats during normal driving, the fork power switching assembly is used to switch the power output, so that the power output shaft of the track wheel group outputs power. At this time, the overall position of the track wheel group remains unchanged, and it only moves by relying on the crawler on the track wheel group. The wheel system of the present invention has the function of avoiding the straw mats, and will not damage the planted straw mats when the vehicle is driving or turning around.

[0012] Preferably, the supporting base of the wheel part is a wheel disc, a plurality of sets of track wheel groups are evenly distributed on the wheel disc in the circumferential direction, the synchronous gear is fixedly connected to the wheel disc and rotates synchronously with the wheel disc, and the track wheel group and the synchronous gear are respectively arranged on both sides of the wheel disc.

[0013] The resulting technical effect is that the wheel disc is the supporting base of the entire wheel unit, and when the wheel unit needs to rotate and move as a whole, power can be used to drive the synchronous gear to rotate.

[0014] Preferably, the track wheel group includes a tensioner mechanism, a connecting plate, a guide wheel, a road wheel, a walking track and a track driving gear group, the connecting plate is fixed on the wheel disc, the tensioner mechanism is fixed on the connecting plate, the guide wheel is rotatably connected to one end of the connecting plate, the tensioner on the tensioner mechanism is rotatably located at the other end of the connecting plate, the road wheel is rotatably located on one side of the connecting plate, the walking track is wound around the outside of the guide wheel, the road wheel and the tensioner, and the track driving gear group is connected to the wheel disc and drives the walking track to rotate.

[0015] The resulting technical effect is: a tensioning wheel mechanism is set on the track wheel group, and the tightness of the walking track is adjusted by the tensioning wheel mechanism. The guide wheel, the road wheel and the tensioning wheel jointly support the movement of the walking track, and the power of the walking track comes from the track drive gear group.

[0016] Preferably, the tensioning wheel mechanism includes a square tube, a connecting rod, a threaded rod and a nut. The square tube is fixed on the other side of the connecting plate, the connecting rod is slidably connected to the inner side of the square tube, the tensioning wheel is rotatably connected to the end of the connecting rod away from the square tube, the nut is fixed to the tail end of the square tube away from the tensioning wheel, the threaded rod is threadedly connected to the nut and the end of the threaded rod abuts against the other end of the connecting rod, and the rotation of the threaded rod causes the connecting rod and the tensioning wheel to move axially.

[0017] The technical effect produced thereby is: the axial movement of the connecting rod and the tensioning wheel is adjusted by rotating the threaded rod, thereby completing the adjustment process of the tensioning wheel, and the adjustment is simple and convenient.

[0018] Preferably, the track drive gear set includes a track drive wheel, a track drive wheel connecting shaft, a track drive driven gear, a spline hub, a fixed gear and a coupling sleeve, the track drive wheel connecting shaft is rotatably connected to the wheel disc, the track drive wheel is fixed at one end of the track drive wheel connecting shaft, the track drive wheel causes the walking track to rotate, the track drive driven gear and the fixed gear are respectively connected to the other end edge of the track drive wheel connecting shaft through bearings, the spline hub is fixed on the track drive wheel connecting shaft and is located between the track drive driven gear and the fixed gear, the coupling sleeve is axially slidable on the spline hub and can be engaged with the track drive driven gear and the fixed gear respectively, the fixed gear is meshed with the locking structure on the wheel disc, and the track drive driven gear is meshed with the track drive driving gear on the wheel disc.

[0019] The resulting technical effect is: the power of the track drive gear set comes from the track drive active gear, the track drive active gear transmits the power to the track drive driven gear, when the spline hub engages with the track drive driven gear through the coupling sleeve, the track drive wheel can be rotated, and when the walking track needs to be locked, the spline hub can be engaged with the fixed gear.

[0020] Preferably, the track drive driving gear is rotatably connected to the middle part of the side of the wheel disc away from the walking track, a track wheel group driving connecting shaft is fixed to one side of the track drive driving gear, the track wheel group driving connecting shaft is drivingly connected to the track wheel group power output shaft, a sleeve is connected to the outer side of the track wheel group driving connecting shaft, the sleeve rotates synchronously with the track drive driving gear, a fork frame is slidably connected to the outer side of the sleeve, the fork frame includes a shifting sleeve part and a fork frame part, the shifting sleeve part is slidably connected to the outer side wall of the sleeve, the fork frame part has multiple groups and is evenly arranged on the outer peripheral side of the shifting sleeve part, the fork frame part is connected to the combining sleeve on the track drive gear group and promotes its axial movement.

[0021] The resulting technical effect is: the power of the track drive active gear comes from the track wheel group drive connecting shaft, the track wheel group drive connecting shaft is powered by the track wheel group power output shaft, and whether the power can be transmitted to the track drive wheel is controlled by the fork frame. When the fork frame moves toward the wheel side, the power can be smoothly transmitted to the track drive wheel. When the fork frame moves away from the wheel side, the power cannot be transmitted to the track drive wheel and the track drive wheel is locked.

[0022] Preferably, the transmission box includes a box body, a cover body and a transition gear transmission assembly, the box body is fixed on the chassis of the simple sand pressing vehicle, the transition gear transmission assembly is rotatably located inside the box body, the cover body is connected to the box body, one side end of the box body is rotatably connected with a power input shaft, the wheel power output shaft and the track wheel group power output shaft are respectively rotatably connected to the other side end of the box body, the power input shaft is respectively connected to the wheel power output shaft and the track wheel group power output shaft through the transition gear transmission assembly, a first slide slot hole and a second slide slot hole are provided on the top of the box body, a power transmission control fork is slidably connected in the first slide slot hole, the power transmission control fork controls the power transmission between the power input shaft and the transition gear transmission assembly; the fork power switching assembly is slidably connected in the second slide slot hole.

[0023] The resulting technical effect is: the transmission box is used to complete the selective output of power, and the power input is also controlled by the power transmission control fork, which first cuts off the power and then completes the power switching process, thereby ensuring the safety and stability of the power switching process.

[0024] Preferably, the power input shaft is rotatably connected to a first gear, the power input shaft is connected to a spline hub, the spline hub is axially slidably connected to a fork sleeve, and the power transmission control fork is connected to the fork sleeve and causes the fork sleeve to engage with the coupling teeth on the first gear.

[0025] The resulting technical effect is: the shift fork controls the movement of the shift fork sleeve through the power transmission control fork, causing the spline hub to engage with the coupling teeth on the first gear, completing the power connection process, and also interrupting the power.

[0026] Preferably, the transition gear transmission assembly includes an intermediate shaft, a second gear, a third gear, an intermediate shaft spline hub and a fourth gear, the intermediate shaft is rotatably connected to the middle part of the casing, the second gear is fixed on the intermediate shaft and meshes with the first gear for transmission, the third gear and the fourth gear are rotatably connected to the intermediate shaft respectively, the intermediate shaft spline hub is fixedly connected to the intermediate shaft and is located between the third gear and the fourth gear; a fifth gear meshed with the third gear is fixedly connected to the power output shaft of the wheel part, a sixth gear meshed with the fourth gear is fixedly connected to the power output shaft of the track wheel set, the shift fork power switching assembly controls the transmission output of the intermediate shaft spline hub and the third gear or the fourth gear, a locking gear is rotatably connected on the power output shaft of the wheel part and located on the outside of the casing, a locking structure meshed with the locking gear is connected to the chassis of the simple sand pressing vehicle, and a synchronous gear driving wheel is fixedly connected to the end of the power output shaft of the wheel part, and the synchronous gear driving wheel meshes with the synchronous gear for transmission.

[0027] The resulting technical effect is that the transition gear transmission assembly can selectively output power. When the intermediate shaft spline hub is combined with the third gear power, the wheel power output shaft has output power; and when the intermediate shaft spline hub is combined with the fourth gear power, the track wheel power output shaft has output power. Of course, the intermediate shaft spline hub utilizes the shift fork power switching assembly to achieve power combination with the corresponding gear.

[0028] Preferably, the shift fork power switching assembly includes a synchronization rod frame, an intermediate shaft combining sleeve and a locking combining sleeve, the synchronization rod frame is connected with a first shift fork, a second shift fork and a third shift fork, the intermediate shaft combining sleeve is axially slidably connected to the intermediate shaft spline hub and can engage with the combining teeth on the third gear or the combining teeth on the fourth gear, the first shift fork is connected to the intermediate shaft combining sleeve and promotes its axial movement, the locking combining sleeve is axially slidably connected to the outside of the locking gear, a transmission spline hub is fixed on the power output shaft of the wheel part and close to the locking gear, the transmission spline hub is combined with the locking gear through the locking combining sleeve and fixed, the second shift fork is connected to the locking combining sleeve and promotes its axial movement, and the third shift fork is connected to the shift sleeve part and promotes its axial movement.

[0029] The resulting technical effect is: when the transmission spline hub is combined with the locking gear through the locking sleeve, in this state, the synchronization rod frame is close to the wheel side, and the wheel power output shaft is locked and does not rotate. At this time, the power is transmitted through the track wheel power output shaft, and the walking track rotates; and when the power is output through the wheel power output shaft, the synchronization rod frame is away from the wheel side, and the controlled fork frame is also away from the wheel side. In this state, the walking track is locked. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The overall structure of the grass grid non-destructive wheel system for desert sand compaction and greening of the present invention Figure 1 ;

[0031] Figure 2 The overall structure of the grass grid non-destructive wheel system for desert sand compaction and greening of the present invention Figure 2 ;

[0032] Figure 3 A schematic diagram of the transmission layout of a grass grid non-destructive wheel system for sand compaction and greening in deserts according to the present invention;

[0033] Figure 4 It is a front view of the wheel part of a grass grid non-destructive wheel system for sand compaction and greening in deserts according to the present invention;

[0034] Figure 5 It is a rear view of the wheel part of a grass grid non-destructive wheel system for sand compaction and greening in deserts according to the present invention;

[0035] Figure 6 This is an axonometric view of a wheel portion of a grass grid non-destructive wheel system for sand compaction and greening in deserts according to the present invention;

[0036] Figure 7 It is a schematic diagram of the combined state of the crawler driving wheel set of the grass grid non-destructive wheel system for desert sand compaction and greening according to the present invention;

[0037] Figure 8 This is a structural diagram of a fork frame of a grass grid non-destructive wheel system for desert sand compaction and greening according to the present invention;

[0038] Fig. 9 It is a schematic diagram of a tension wheel mechanism of a grass grid non-destructive wheel system for sand compaction and greening in deserts according to the present invention;

[0039] Fig.10 This is a schematic diagram of the interior of a transmission box of a grass grid non-destructive wheel system for desert sand compaction and greening according to the present invention;

[0040] Fig.11 This is a structural diagram of a wheel hub support frame of a sand compactor chassis of a grass grid non-destructive wheel system for compacting sand and planting green in deserts according to the present invention;

[0041] Fig.12 It is a partial structural diagram of a fork power switching assembly of a grass grid non-destructive wheel system for desert sand compaction and greening according to the present invention;

[0042] Fig.13 The walking state of the grass grid non-destructive wheel system for desert sand compaction and greening according to the present invention Figure 1 ;

[0043] Fig.14 The walking state of the grass grid non-destructive wheel system for desert sand compaction and greening according to the present invention Figure 2 .

[0044] 1 wheel part, 2 track wheel group, 3 horizontal straw curtain, 4 synchronous gear, 5 transmission box, 51 box body, 52 cover body, 53 transition gear transmission assembly, 531 first gear, 532 second gear, 533 third gear, 534 fourth gear, 535 fifth gear, 536 sixth gear, 537 intermediate shaft, 6 power input shaft, 7 wheel part power output shaft, 8 track wheel group power output shaft, 9 fork power switching assembly, 91 synchronous rod frame, 92 intermediate shaft combination sleeve, 93 locking combination sleeve, 94 first shift fork, 95 second shift fork, 96 third shift fork, 10 wheel disc, 11 tension wheel mechanism, 111 Square tube, 112 connecting rod, 113 threaded rod, 114 nut, 115 tensioner, 12 connecting plate, 13 guide wheel, 14 road wheel, 15 walking track, 16 track drive gear set, 161 track drive wheel, 162 track drive wheel connecting shaft, 163 track drive driven gear, 164 spline hub, 165 fixed gear, 166 coupling sleeve, 17 track drive driving gear, 18 track wheel set drive connecting shaft, 19 sleeve, 20 fork frame, 21 power transmission control fork, 22 locking structure, 23 locking structure, 24 sand pressing vehicle chassis wheel hub support frame, 25 locking gear, 26 synchronous gear drive wheel. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See the attached Figures 1 to 14 According to an embodiment of the present invention, a grass grid non-destructive wheel system for desert sand compaction and greening includes:

[0047] The wheel part 1 has three sets of track wheel groups 2 arranged circumferentially. The outer tracks of the three sets of track wheel groups 2 form the outer contour of the wheel part 1. There is a gap between adjacent track wheel groups 2 to avoid the horizontal straw curtains 3 from being damaged when the wheel part rotates as a whole. A synchronous gear 4 is fixed on the wheel part 1. The synchronous gear is a ring gear. The horizontal straw curtain is actually a vertical wheat straw perpendicular to the traveling direction of the vehicle body.

[0048] The transmission box 5 is arranged at one side of the wheel part 1, away from the track wheel group 2. The transmission box 5 is provided with a power input shaft 6, a wheel part power output shaft 7 and a track wheel group power output shaft 8. The power input shaft 6 is used for transmission connection with an external power source, the wheel part power output shaft 7 is transmission connected with the synchronous gear 4, and the track wheel group power output shaft 8 is transmission connected with multiple track wheel groups 2;

[0049] The shift fork power switching assembly 9 is connected to the transmission box 5 and controls the transmission connection relationship between the power input shaft 6 and the wheel power output shaft 7 and the track wheel group power output shaft 8. When the wheel power output shaft 7 outputs power, the synchronous gear 4 drives the multiple track wheel groups 2 on the wheel part 1 to rotate circumferentially as a whole. When compacting sand and planting green, the gaps between adjacent track wheel groups 2 are used to avoid the planted grass grids to avoid damage to them; when the track wheel group power output shaft 8 outputs power, the three track wheel groups 2 on the wheel part 1 remain in position and the tracks on the track wheel groups rotate. This product can rotate as a whole, similar to conventional wheel driving, or the wheel can not rotate, and the tracks of the track wheel group on the wheel can be used to rotate to complete the driving. The two driving states are controlled and switched by the shift fork power switching assembly 9 according to different driving conditions.

[0050] In other embodiments, the supporting base of the wheel portion 1 is a wheel disc 10, three sets of track wheel assemblies 2 are evenly distributed on the wheel disc 10 in the circumferential direction, the synchronous gear 4 is fixedly connected to the wheel disc 10 and rotates synchronously with the wheel disc 10, and the rotation of the wheel can be completed by controlling the rotation of the synchronous gear, and the track wheel assemblies 2 and the synchronous gear 4 are respectively arranged on both sides of the wheel disc 10.

[0051] In other specific embodiments, the track wheel set 2 includes a tensioning wheel mechanism 11, a connecting plate 12, a guide wheel 13, a road wheel 14, a walking track 15 and a track driving gear set 16, the connecting plate 12 is fixed to the wheel disc 10, the tensioning wheel mechanism 11 is fixed to the connecting plate 12, the guide wheel 13 is rotatably connected to one end of the connecting plate 12, the tensioning wheel 115 on the tensioning wheel mechanism 11 is rotatably located at the other end of the connecting plate 12, the road wheel 14 is rotatably located at one side of the connecting plate 12, the walking track 15 is wound around the outer sides of the guide wheel 13, the road wheel 14 and the tensioning wheel 113, and the track driving gear set 16 is connected to the wheel disc 10 and drives the walking track 15 to rotate. The walking track is driven to rotate by the track driving gear set, thereby completing the track driving process.

[0052] Specifically, the tensioner mechanism 11 includes a square tube 111, a connecting rod 112, a threaded rod 113 and a nut 114. The square tube 111 is fixed to the other side of the connecting plate 12, the connecting rod 112 is slidably connected to the inner side of the square tube 111, the tensioner 115 is rotatably connected to one end of the connecting rod 112 away from the square tube 111, the nut 114 is fixed to the tail end of the square tube 111 away from the tensioner 115, the threaded rod 113 is threadedly connected to the nut 114 and the end of the threaded rod 113 abuts against the other end of the connecting rod 112, the rotation of the threaded rod 113 causes the connecting rod 112 and the tensioner 115 to move axially, thereby completing the adjustment process of the tensioner 115.

[0053] In some other embodiments, the track drive gear set 16 includes a track drive wheel 161, a track drive wheel connecting shaft 162, a track drive driven gear 163, a spline hub 164, a fixed gear 165 and a coupling sleeve 166. The track drive wheel connecting shaft 162 is rotatably connected to the wheel disc 10. The track drive wheel 161 is fixed to one end of the track drive wheel connecting shaft 162 and is located on the inner side of the walking track 15. The track drive wheel 161 causes the walking track 15 to rotate. The track drive driven gear 163 and the fixed gear 165 are respectively connected to the edge of the other end of the track drive wheel connecting shaft 162 through bearings. It should be noted that the track drive driven gear 163 is closer to the wheel disc, which is convenient for the track drive active gear 163 to be connected to the wheel disc 10. The gear 17 is meshed, the spline hub 164 is fixed on the track drive wheel connecting shaft 162 and is located between the track drive driven gear 163 and the fixed gear 165, the coupling sleeve 166 is axially slidable on the spline hub 164 and can be engaged with the track drive driven gear 163 and the fixed gear 165 respectively, the fixed gear 165 is meshed with the locking structure 23 on the wheel disc, and the track drive driven gear 163 is meshed with the track drive driving gear 17 on the wheel disc 10. It can be understood that when the coupling sleeve 166 moves close to the wheel, the power transmission process is from the track drive driving gear 17 to the track drive driven gear 163 to the spline hub 164 to the track drive wheel connecting shaft 162 to the track drive wheel 161. Figure 7 c.

[0054] When the coupling sleeve 166 moves away from the wheel, the fixed gear 165 is coupled to the spline hub through the coupling sleeve 166, thereby ensuring that the track drive wheel connecting shaft 162 and the track drive wheel 161 are locked and immovable. Figure 7 a.

[0055] In some other specific embodiments, the track drive driving gear 17 is rotatably connected to the middle part of the side of the wheel disc 10 away from the walking track, and a track wheel group drive connecting shaft 18 is fixed to one side of the track drive driving gear 17, and the track wheel group drive connecting shaft 18 is transmission-connected to the track wheel group power output shaft 8, and a sleeve 19 is connected to the outer side of the track wheel group drive connecting shaft 18, and the sleeve 19 rotates synchronously with the track drive driving gear 17, and a fork frame 20 is slidably connected to the outer side of the sleeve 19, and the fork frame 20 includes a shifting sleeve part and a fork frame part, and the shifting sleeve part is slidably connected to the outer side wall of the sleeve 19, and the fork frame part has multiple groups and is evenly arranged on the outer peripheral side of the shifting sleeve part, and the fork frame part is connected to the coupling sleeve 166 on the track drive gear group and promotes its axial movement. It can be understood that the rotation of the sleeve will not affect the rotation of the fork frame 20. In addition, the fork frame 20 can move axially on the sleeve.

[0056] In some other specific embodiments, the transmission box 5 includes a box body 51, a cover body 52 and a transition gear transmission assembly 53. The box body 51 is fixed on the chassis wheel hub support frame 24 of the sand pressing vehicle. The transition gear transmission assembly 53 is rotatably located inside the box body 51. The cover body 53 is connected to the box body 51. One side end of the box body 51 is rotatably connected with the power input shaft 6. The wheel power output shaft 7 and the track wheel group power output shaft 8 are respectively rotatably connected to the other side end of the box body 51. The power input shaft 6 is respectively connected to the wheel power output shaft 7 and the track wheel group power output shaft 8 through the transition gear transmission assembly 53. A first slide slot hole and a second slide slot hole are opened on the top of the box body 51. A power transmission control fork 21 is slidably connected in the first slide slot hole. The power transmission control fork 21 controls the power transmission between the power input shaft 6 and the transition gear transmission assembly 53; the fork power switching assembly 9 is slidably connected in the second slide slot hole.

[0057] In some other embodiments, the power input shaft 6 is rotatably connected to the first gear 531, the power input shaft 6 is connected to a spline hub, the spline hub is axially slidably connected to a shift fork sleeve, the power transmission control fork 51 is connected to the shift fork sleeve and causes the shift fork sleeve to engage with the coupling teeth on the first gear, the power input of the transmission box is controlled by the power transmission control fork, and the selective switching of the output power is completed when the power is interrupted, thereby improving the safety and stability of the operation.

[0058] In some other specific embodiments, the transition gear transmission assembly 53 also includes an intermediate shaft 537, a second gear 532, a third gear 533, an intermediate shaft spline hub and a fourth gear 534. The intermediate shaft 537 is rotatably connected to the middle part of the housing 51. The second gear 532 is fixed to the intermediate shaft 537 and meshes with the first gear 531 for transmission. The third gear 533 and the fourth gear 534 are respectively rotatably connected to the intermediate shaft 537. The intermediate shaft spline hub is fixedly connected to the intermediate shaft 537 and is located between the third gear 533 and the fourth gear 534. The wheel part power output shaft 7 is fixedly connected to a fifth gear meshing with the third gear. Wheel 535, a sixth gear 536 meshing with the fourth gear is fixedly connected to the power output shaft 8 of the track wheel group, the fork power switching assembly 9 controls the transmission output of the intermediate shaft spline hub and the third gear 533 or the fourth gear 534, and a locking gear 25 is rotatably connected to the power output shaft 7 of the wheel part and located on the outside of the box body. This is to ensure that the locking gear 25 will not affect the power transmission of the power output shaft of the wheel part when it is not engaged. A locking structure 22 meshing with the locking gear is connected to the chassis hub support frame 24 of the sand pressing vehicle. It can be understood that the locking gear 25 is affected by the locking structure 22 and is positioned and does not rotate.

[0059] In other embodiments, the shift fork power assembly 9 includes a synchronization rod frame 91, an intermediate shaft coupling sleeve 92 and a locking coupling sleeve 93. The synchronization rod frame 91 is connected to a first shift fork 94, a second shift fork 95 and a third shift fork 96. The intermediate shaft coupling sleeve 92 is axially slidably connected to the intermediate shaft spline hub and can engage with the coupling teeth on the third gear or the coupling teeth on the fourth gear. The first shift fork 94 is connected to the intermediate shaft coupling sleeve 92 and promotes its axial movement. The locking coupling sleeve 93 is axially slidably connected to the outer side of the locking gear 25. A transmission spline hub is fixed on the power output shaft 7 of the wheel part and close to the locking gear. The transmission spline hub is combined with the locking gear 25 through the locking coupling sleeve 93 and fixed. The second shift fork 95 is connected to the locking coupling sleeve 93 and promotes its axial movement. The third shift fork 96 is connected to the shift sleeve part and promotes its axial movement. The synchronous rod frame 91 is used to simultaneously control the axial movement of the fork frame 20, the intermediate shaft coupling sleeve 92 and the locking coupling sleeve 93, thereby completing the corresponding power output or interruption.

[0060] Specific movement process and principle description:

[0061] Reference Fig.13When the wheel moves between two planted vertical grasses, the wheel does not rotate as a whole and moves by relying on the track wheel assembly on the wheel part. Specifically, the power transmission control fork 21 needs to be close to the wheel side so that the power of the power input shaft 6 is smoothly transmitted to the first gear 531. At this time, the fork power switching assembly 9 is close to the wheel side, and the first shift fork 94 pushes the intermediate shaft combination sleeve 92 to move close to the wheel side, so that the fourth gear 534 has output power. The power is transmitted to the track drive wheel connecting shaft 162 and the track drive driving gear 17 through the track wheel assembly power output shaft 8. Since the third shift fork 96 on the fork power switching assembly 9 controls the The shift fork frame 20 moves toward the wheel side. In this state, the track drive driven gear 163 is connected to the spline hub 164 through the coupling sleeve 166, and the power is transmitted to the track drive wheel 161 through the track drive wheel connecting shaft 162 to complete the walking of the walking track 15. When the track is walking, the wheel power output shaft 7 is locked and motionless. The second shift fork 95 controls the locking coupling sleeve to engage with the locking gear 25. At this time, due to the fixed relationship between the transmission spline hub and the wheel power output shaft 7, the wheel power output shaft 7 is locked and does not rotate. The end of the wheel power output shaft is connected to the synchronous gear driving wheel 26, thereby controlling the synchronous gear driving wheel 26 not to rotate.

[0062] Reference Fig.14 When the wheel moves to the horizontal grass, it needs to cross the horizontal grass and switch the gear. First, the power transmission control fork 21 is away from the wheel to interrupt the power output, and then the fork power switching assembly 9 is away from the wheel side. At this time, the first shift fork 94 pushes the intermediate shaft coupling sleeve 92 to move away from the wheel side, so that the third gear 533 has output power, and the power is transmitted to the synchronous gear driving wheel 26 through the wheel power output shaft 7 to complete the rotation of the synchronous gear 4, so that the entire wheel rotates. Since the third shift fork 96 on the shift fork power switching assembly 9 simultaneously controls the shift fork frame 20 to move away from the wheel side, in this state, the fixed gear 165 is combined with the spline hub 164 through the coupling sleeve 166, so that the crawler driving wheel 161 is locked and does not rotate, completing the obstacle avoidance walking of the wheel. When the wheel is walking, the second shift fork 95 controls the locking coupling sleeve to move away from the locking gear 25 to ensure the smooth transmission of power. After switching the output mode, the power transmission control fork 21 is controlled to move toward the wheel side, thereby completing the reconnection of power.

[0063] As for the device and the method of use disclosed in the embodiment, since they correspond to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0064] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A grass grid non-destructive wheel system for desert sand compaction and greening, characterized in that: include: A wheel part (1), wherein a plurality of track wheel assemblies (2) are arranged circumferentially on the wheel part (1), the plurality of track wheel assemblies (2) forming an outer contour of the wheel part (1), and gaps are provided between adjacent track wheel assemblies (2) to avoid the horizontally standing straw curtains (3), and a synchronous gear (4) is fixed on the wheel part (1); A transmission box (5), the transmission box (5) is arranged on one side of the wheel part (1), and is provided with a power input shaft (6), a wheel part power output shaft (7) and a track wheel group power output shaft (8), the power input shaft (6) is used for transmission connection with an external power source, the wheel part power output shaft (7) is transmission connected with a synchronous gear (4), and the track wheel group power output shaft (8) is transmission connected with a plurality of track wheel groups (2); A shift fork power switching assembly (9) is connected to the transmission box (5) and controls the transmission connection relationship between the power input shaft (6) and the wheel power output shaft (7) and the track wheel group power output shaft (8); when the wheel power output shaft (7) outputs power, the synchronous gear (4) drives the multiple track wheel groups (2) on the wheel part (1) to rotate in the circumferential direction as a whole, and the gaps between adjacent track wheel groups (2) are used to avoid the planted grass grids during sand compaction and greening; when the track wheel group power output shaft (8) outputs power, the multiple track wheel groups (2) on the wheel part (1) remain in position and the tracks on the track wheel groups rotate.

2. The grass grid non-destructive wheel system for desert sand compaction and greening according to claim 1 is characterized in that: The supporting base of the wheel part (1) is a wheel disc (10), a plurality of groups of track wheel assemblies (2) are evenly distributed on the wheel disc (10) in the circumferential direction, the synchronous gear (4) is fixedly connected to the wheel disc (10) and rotates synchronously with the wheel disc (10), and the track wheel assemblies (2) and the synchronous gear (4) are respectively arranged on both sides of the wheel disc (10).

3. The grass grid non-destructive wheel system for desert sand compaction and greening according to claim 2 is characterized in that: The track wheel assembly (2) comprises a tensioning wheel mechanism (11), a connecting plate (12), a guide wheel (13), a road wheel (14), a walking track (15) and a track driving gear set (16); the connecting plate (12) is fixed on the wheel disc (10); the tensioning wheel mechanism (11) is fixed on the connecting plate (12); the guide wheel (13) is rotatably connected to one end of the connecting plate (12); the tensioning wheel (115) on the tensioning wheel mechanism (11) is rotatably located at the other end of the connecting plate (12); the road wheel (14) is rotatably located at one side of the connecting plate (12); the walking track (15) is wound around the outer sides of the guide wheel (13), the road wheel (14) and the tensioning wheel (115); and the track driving gear set (16) is connected to the wheel disc (10) and drives the walking track (15) to rotate.

4. The grass grid non-destructive wheel system for desert sand compaction and greening according to claim 3 is characterized in that: The tensioner mechanism (11) comprises a square tube (111), a connecting rod (112), a threaded rod (113) and a nut (114); the square tube (111) is fixed to the other side of the connecting plate (12); the connecting rod (112) is slidably connected to the inner side of the square tube (111); the tensioner (115) is rotationally connected to one end of the connecting rod (112) away from the square tube (111); the nut (114) is fixed to the rear end of the square tube (111) away from the tensioner (115); the threaded rod (113) is threadedly connected to the nut (114) and the end of the threaded rod (113) is in contact with the other end of the connecting rod (112); the rotation of the threaded rod (113) causes the connecting rod (112) and the tensioner (115) to move axially.

5. The grass grid non-destructive wheel system for desert sand compaction and greening according to claim 3 is characterized in that: The track driving gear set (16) comprises a track driving wheel (161), a track driving wheel connecting shaft (162), a track driving driven gear (163), a spline hub (164), a fixed gear (165) and a coupling sleeve (166); the track driving wheel connecting shaft (162) is rotatably connected to the wheel disc (10); the track driving wheel (161) is fixed to one end of the track driving wheel connecting shaft (162); the track driving wheel (161) causes the walking track (15) to rotate; the track driving driven gear (163) and the fixed gear (165) are respectively connected through bearings. The spline hub (164) is connected to the other end edge of the track drive wheel connecting shaft (162), and is fixed on the track drive wheel connecting shaft (162) and is located between the track drive driven gear (163) and the fixed gear (165). The coupling sleeve (166) is axially slidably located on the spline hub (164) and can be engaged with the track drive driven gear (163) and the fixed gear (165) respectively. The fixed gear (165) is meshed with the locking structure (23) on the wheel disc, and the track drive driven gear (163) is meshed with the track drive driving gear (17) on the wheel disc (10).

6. The grass grid non-destructive wheel system for desert sand compaction and greening according to claim 5 is characterized in that: The track driving driving gear (17) is rotatably connected to the middle part of the side of the wheel disc (10) away from the walking track. A track wheel group driving connecting shaft (18) is fixed to one side of the track driving driving gear (17). The track wheel group driving connecting shaft (18) is transmission-connected to the track wheel group power output shaft (8). A sleeve (19) is connected to the outer side of the track wheel group driving connecting shaft (18). The sleeve (19) rotates synchronously with the track driving driving gear (17). A shift fork frame (20) is slidably connected to the outer side of the sleeve (19). The shift fork frame (20) includes a shift sleeve part and a fork frame part. The shift sleeve part is slidably connected to the outer side wall of the sleeve (19). The fork frame part has multiple groups and is evenly arranged on the outer peripheral side of the shift sleeve part. The fork frame part is connected to a coupling sleeve (166) on the track driving gear group and promotes its axial movement.

7. The grass grid non-destructive wheel system for desert sand compaction and greening according to claim 6 is characterized in that: The transmission box (5) comprises a box body (51), a cover body (52) and a transition gear transmission assembly (53); the box body (51) is fixed on a wheel hub support frame (24) of a sand pressing vehicle chassis; the transition gear transmission assembly (53) is rotatably located inside the box body (51); the cover body (52) is connected to the box body (51); one side end of the box body (51) is rotatably connected to a power input shaft (6); the wheel power output shaft (7) and the track wheel group power output shaft (8) are rotatably connected to the other side of the box body (51). At the side end, the power input shaft (6) is respectively connected to the wheel power output shaft (7) and the track wheel power output shaft (8) through the transition gear transmission assembly (53); the top of the box body (51) is provided with a first slide slot hole and a second slide slot hole; a power transmission control fork (21) is slidably connected in the first slide slot hole, and the power transmission control fork (21) controls the power transmission between the power input shaft (6) and the transition gear transmission assembly (53); the fork power switching assembly (9) is slidably connected in the second slide slot hole.

8. The grass grid non-destructive wheel system for desert sand compaction and greening according to claim 7 is characterized in that: The power input shaft (6) is rotatably connected to a first gear (531), the power input shaft (6) is connected to a spline hub, the spline hub is axially slidably connected to a shift fork sleeve, and the power transmission control shift fork (21) is connected to the shift fork sleeve and causes the shift fork sleeve to engage with the coupling teeth on the first gear.

9. The grass grid non-destructive wheel system for desert sand compaction and greening according to claim 8, characterized in that: The transition gear transmission assembly (53) further comprises an intermediate shaft (537), a second gear (532), a third gear (533), an intermediate shaft spline hub and a fourth gear (534); the intermediate shaft (537) is rotatably connected to the middle portion of the housing (51); the second gear (532) is fixed on the intermediate shaft (537) and meshes with the first gear (531) for transmission; the third gear (533) and the fourth gear (534) are rotatably connected to the intermediate shaft (537) respectively; the intermediate shaft spline hub is fixedly connected to the intermediate shaft (537) and is located between the third gear (533) and the fourth gear (534); the wheel portion power output shaft (7) is fixedly connected to the third gear (532) and the fourth gear (534) is fixedly connected to the third gear (533). The fifth gear (535) is meshed with the fourth gear, the sixth gear (536) meshed with the fourth gear is fixedly connected to the power output shaft (8) of the crawler wheel group, the fork power switching assembly (9) controls the transmission output of the intermediate shaft spline hub and the third gear (533) or the fourth gear (534), a locking gear (25) is rotatably connected to the power output shaft (7) of the wheel part and is located outside the box body, a locking structure (22) meshed with the locking gear is connected to the wheel hub support frame (24) of the sand pressing vehicle chassis, and a synchronous gear driving wheel (26) is fixedly connected to the end of the power output shaft (7) of the wheel part, and the synchronous gear driving wheel (26) meshes with the synchronous gear (4) for transmission.

10. The grass grid non-destructive wheel system for desert sand compaction and greening according to claim 9, characterized in that: The shift fork power switching assembly (9) comprises a synchronous rod frame (91), an intermediate shaft coupling sleeve (92) and a locking coupling sleeve (93); the synchronous rod frame (91) is connected with a first shift fork (94), a second shift fork (95) and a third shift fork (96); the intermediate shaft coupling sleeve (92) is axially slidably connected to the intermediate shaft spline hub and can engage with the coupling teeth on the third gear or the coupling teeth on the fourth gear; the first shift fork (94) is connected to the intermediate shaft coupling sleeve (92) and causes it to move axially; the locking coupling sleeve (93) is axially slidably connected to the outer side of the locking gear (25); a transmission spline hub is fixed on the wheel part power output shaft (7) and on a side close to the locking gear; the transmission spline hub is coupled to the locking gear (25) through the locking coupling sleeve (93) and is fixed; the second shift fork (95) is connected to the locking coupling sleeve (93) and causes it to move axially; the third shift fork (96) is connected to the shift sleeve part and causes it to move axially.

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