A harvester steering parking device

Abstract

The present application relates to the technical field of harvester steering parking, in particular to a kind of harvester steering parking device, including gearbox and the drive gear shaft of gearbox transmission connection, still include two inner push mechanisms and two locking mechanisms, the harvester steering parking device, when wear thin between multiple brake pads, by the effect of inner push mechanism and locking mechanism, in the process of steering yoke shaft rotation, by inner push mechanism to drive locking mechanism to swing, if the friction cannot completely lock drive gear shaft, after locking mechanism and sleeve are in contact, if drive gear shaft can still continue to drive drive gear shaft to rotate, locking mechanism and sleeve can be clamped between, so that drive gear shaft is locked, i.e. according to brake pad wear condition, one of drive gear shaft is locked, so that harvester can be steered and parked.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of harvester steering and parking, in particular to a harvester steering and parking device. BACKGROUND

[0002] When the harvester is steering and parking, it needs to be controlled through the gearbox. By locking one of the drive gear shafts, the other rotating drive wheel can be controlled to rotate around it. Parking requires both brake pads to work at the same time, so that both drive wheels are locked to achieve the effect of parking. However, long-term use will cause brake pad wear and eventually gradual failure. When waiting for spare parts, it takes two to three days to wait for express delivery. However, during the busy farming season, the harvester is often not enough for farmers to use. If the machine is stopped for two to three days, the crops may not be completely harvested before the rainy season arrives, resulting in moldy crops and wasted farmers' hard work. In addition, users who purchase harvesters also need to recoup their investment during these few days. Therefore, a harvester steering and parking device can automatically increase the resistance of the brake pad according to the wear condition of the brake pad, lock one of the drive gear shafts, and enable the harvester to steer and park. SUMMARY

[0003] In view of the above technical deficiencies, the purpose of the present application is to provide a harvester steering and parking device that can automatically increase the resistance of the brake pad according to the wear condition of the brake pad, lock one of the drive gear shafts, and enable the harvester to steer and park.

[0004] To achieve the above purpose, the present application adopts the following technical scheme: The present application provides a harvester steering and parking device, which comprises a gearbox and a drive gear shaft connected in transmission with the gearbox. The gearbox is provided with a rotatable idler and a steering clutch. The idler is connected in transmission with the drive gear shaft through a transmission gear shaft. The steering clutch is connected in transmission with the idler. The steering clutch is provided with two rotatable steering yoke shafts and two horizontally sliding steering gears. The device is characterized in that it further comprises two internal pushing mechanisms and two locking mechanisms. The internal pushing mechanism is connected in transmission with the steering yoke shaft. The internal pushing mechanism is used to move the locking mechanism towards the gearbox housing. The outer shell of the gearbox housing is provided with a sleeve for the rotation of the drive gear shaft. The sleeve is used to be clamped and locked with the locking mechanism. When the steering yoke shaft is not rotating, the steering clutch is not working, and the steering yoke shaft remains in the initial position. The locking mechanism is not clamped with the sleeve. When the steering yoke shaft rotates, the steering gear slides outward, the steering yoke shaft drives the internal pushing mechanism to rotate, and the internal pushing mechanism moves the locking mechanism towards the sleeve. When the steering gear is in contact with the brake pad, one side of the locking mechanism is flush with the end of the sleeve. When the steering gear is excessively pressed against the brake pad, the locking mechanism is clamped into the sleeve.

[0005] Preferably, the steering clutch comprises two single-sided brakes, each single-sided brake comprising a steering gear, a rotating shaft, a yoke, a return spring and a plurality of stacked brake pads, the rotating shaft being rotatably connected with the gearbox housing, the steering gear being slidably mounted on the steering rotating shaft, the outer edge of the brake pad being fixedly connected with the gearbox housing, the inner edge of the brake pad being slidably connected with the outer edge of the steering gear, the return spring being configured to provide an elastic force to the steering gear towards the middle of the gearbox housing, the middle of the rotating shaft being fixedly provided with a driving gear, both sides of the driving gear being provided with a clamping block clamped with two clamping grooves, the inner side of the steering gear being provided with a clamping groove one for clamping the clamping block, the yoke being rotatably connected with the ring groove, the yoke being fixedly connected with the steering yoke shaft; when the clamping groove one is completely separated from the clamping block, the steering gear is not pressed by the brake pad.

[0006] Preferably, each locking mechanism comprises a sleeve, a contact spring, an annular clamping plate, a swivel ring and a stop ring, the sleeve being slidably mounted on the driving gear shaft, a plurality of clamping strips one being fixedly provided on the outer edge of the driving gear shaft, a clamping groove two being provided on the inner edge of the sleeve, the clamping strip one being inserted into the clamping groove two, the annular clamping plate being fixedly mounted on the left side of the sleeve, the stop ring being fixedly mounted on the right side of the sleeve, the swivel ring being slidably mounted on the sleeve, the contact spring being sleeved on the sleeve, the sleeve being configured to apply an elastic force to the swivel ring away from the annular clamping plate, a plurality of clamping strips two being fixedly provided on the outer edge of the sleeve, a clamping groove three being provided on the inner edge of the annular clamping plate and clamped with the clamping strips two, the swivel ring being rotatably connected with the inner pushing mechanism; when the steering gear is in contact with the brake pad, one side end face of the annular clamping plate is flush with the end face of the sleeve; when the steering gear is excessively pressed by the brake pad, the annular clamping plate is sleeved in the sleeve.

[0007] Preferably, each inner pushing mechanism comprises two rotating rods, two rotating sleeves and a connecting plate, one end of the two rotating rods being fixedly connected with the upper and lower ends of the steering yoke shaft, the other end of the rotating rod being slidably connected with the rotating sleeve, the two rotating sleeves being respectively located on the upper and lower sides of the driving gear shaft, the connecting plate being fixedly connected with the two rotating sleeves, the upper and lower sides of the swivel ring being fixedly provided with rotating shafts, the rotating sleeve being rotatably connected with the rotating shaft.

[0008] Preferably, the outer edge of the sleeve is provided with a secondary friction mechanism, the secondary friction mechanism being slidably mounted on the sleeve, the inner side of the secondary friction mechanism and the inner side of the annular clamping plate being rough surface structures, when the secondary friction mechanism needs to be in contact with the annular clamping plate, the end face of the secondary friction mechanism is located between the sleeve and the annular clamping plate.

[0009] Preferably, the secondary friction mechanism comprises a friction block and a screw, the screw is engaged with the friction block, the friction block is provided with a threaded hole for the screw to pass through and engage, the sleeve is provided with a fixed clamping hole and a working clamping hole, and the inner side of the secondary friction mechanism is provided with a clamping groove three for clamping with the clamping strip. When the secondary friction mechanism needs to be in contact with the annular clamping plate for friction, the end of the screw is inserted into the working clamping hole. When the secondary friction mechanism does not need to be in contact with the annular clamping plate for friction, the end of the screw is inserted into the fixed clamping hole.

[0010] Preferably, the steering gear is provided with a ring groove, the yoke has a shape structure, both ends of the yoke are fixedly connected with the steering yoke shaft, and the end of the yoke is fixedly provided with two insertion columns which are inserted into the ring groove.

[0011] Preferably, the outer edge of the steering gear is provided with an annular step, one side of the steering gear close to the brake pad is provided with a pressing ring, the inner edge of the pressing ring is attached to the outer edge of the steering gear, and one side of the pressing ring is in contact with the brake pad.

[0012] The harvesting machine steering and parking device has the advantages that when the brake pads between the plurality of brake pads are worn and thinned, the inner pushing mechanism and the locking mechanism are used to drive the locking mechanism to swing in the process of rotating the steering yoke shaft. If the friction force cannot completely lock the driving gear shaft, the locking mechanism can be clamped with the sleeve after the locking mechanism is in contact with the sleeve, so that the driving gear shaft is locked. One of the driving gear shafts can be locked according to the wear condition of the brake pads, so that the harvesting machine can be steered and parked.

[0013] If the plurality of brake pads are completely disabled, the secondary friction mechanism is moved out, the annular clamping plate and the secondary friction mechanism are pressed by the action of the contact spring, the driving gear shaft is locked by friction, the resistance of the brake pad is automatically increased, the harvesting machine can be turned, and the time for the harvesting machine to wait for spare parts during the busy season is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 It is a perspective view of the present application.

[0016] Figure 2 It is a sectional view of the present application.

[0017] Figure 3 isometric view of the steering clutch.

[0018] Figure 4 isometric view of the steering clutch. Figure 3 isometric view of the steering clutch.

[0019] Figure 5 isometric view of the steering clutch.

[0020] Figure 6 isometric view of the steering clutch.

[0021] Figure 7 isometric view of the steering clutch.

[0022] BRIEF DESCRIPTION OF DRAWINGS 1, driving gear shaft; 1a, card strip one; 2, idler; 4, steering clutch; 4a, steering gear; 4a1, card slot one; 4a2, ring slot; 4b, brake pad; 4c, steering yoke shaft; 4d, rotating shaft; 4e, yoke; 4f, return spring; 4h, driving gear; 4h1, card block; 4j, insertion column; 4s, extrusion ring; 5, gearbox shell; 5a, sleeve; 5b, card strip two; 5c, fixed card hole; 5d, working card hole; 6, inner push mechanism; 6a, rotating rod; 6b, rotating sleeve; 6c, connecting plate; 7, locking mechanism; 7a, sleeve ring; 7a1, card slot two; 7b, abutting spring; 7c, annular card plate; 7c1, card slot three; 7d, rotating ring; 7e, blocking ring; 7h, rotating shaft; 8, transmission gear shaft; 9, secondary friction mechanism; 9a, friction block; 9b, screw. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0024] Embodiment: The present application provides a harvester steering parking device, such as Figures 1-2As shown, the drive gear shaft 1 is connected with the gearbox, the gearbox is provided with a rotatable idler gear 2 and a steering clutch 4, the idler gear 2 is connected with the drive gear shaft 1 through a transmission gear shaft 8, the steering clutch 4 is connected with the idler gear 2, the steering clutch 4 is provided with two rotatable steering yoke shafts 4c and two horizontally-slidable steering gears 4a, characterized in further comprising two inner pushing mechanisms 6 and two locking mechanisms 7, the inner pushing mechanism 6 is connected with the steering yoke shaft 4c, the inner pushing mechanism 6 is used to push the locking mechanism 7 to move towards the gearbox shell 5, the outer shell of the gearbox shell 5 is provided with a sleeve 5a for the rotation of the drive gear shaft 1, the sleeve 5a is used to be clamped and locked with the locking mechanism 7.

[0025] When the steering yoke shaft 4c is not rotated, the steering clutch 4 is not worked, the steering yoke shaft 4c keeps the initial position, and the locking mechanism 7 is not clamped with the sleeve 5a; the steering yoke shaft 4c can be rotated, so that the steering gear 4a drives the drive gear shaft 1 to rotate through the idler gear 2 and the transmission gear shaft 8, and the drive gear shaft 1 can drive the walking wheel to move, and the harvester can move forward.

[0026] When the steering yoke shaft 4c is rotated, the steering gear 4a slides outward, the steering yoke shaft 4c drives the inner pushing mechanism 6 to rotate, and the inner pushing mechanism 6 pushes the locking mechanism 7 to move towards the sleeve 5a; that is, the movement of the steering gear 4a and the movement of the locking mechanism 7 are carried out at the same time, if the steering gear 4a is pushed to the preset position and still cannot be locked with the drive gear shaft 1, the locking mechanism 7 needs to be quickly clamped with the sleeve 5a to realize the locking of the drive gear shaft 1.

[0027] The preset position is the position at which the steering gear 4a is generally pressed by the brake pad 4b, and the drive gear shaft 1 can stop.

[0028] When the steering gear 4a is in contact with the brake pad 4b, one side of the locking mechanism 7 is flush with the end of the sleeve 5a, if the drive gear shaft 1 cannot be rotated, it is in the locked state, and the steering yoke shaft 4c does not need to be continuously rotated; whether the drive gear shaft 1 can be rotated can be judged by the turning radius of the harvester when the user operates the harvester. When turning, if the user feels that the movement of the harvester is obviously increased, it means that the drive gear shaft 1 is not locked, at this time, the user will continue to rotate the steering yoke shaft 4c.

[0029] The rotation mode of the steering yoke shaft 4c has various modes, which are recorded in the prior art, the steering yoke shaft 4c can be rotated by a cylinder pushing a cam connected to the steering yoke shaft 4c, or the steering yoke shaft 4c can be rotated by a brake line, how to drive the steering yoke shaft 4c to rotate is not the main point of the invention, which is not described here.

[0030] If the multiple brake pads 4b are excessively worn, the thickness of the multiple brake pads 4b will be thinned, so that when the steering gear 4a and the brake pad 4b are in contact, the driving gear shaft 1 can still rotate, at this time, the steering gear 4a and the brake pad 4b are excessively extruded, so that the friction and the clamping force are combined in a superimposed manner to lock the driving gear shaft 1, when the steering gear 4a and the brake pad 4b are excessively extruded, the locking mechanism 7 is clamped into the sleeve 5a, at this time, the driving gear shaft 1 and the gearbox housing 5 are locked, since the gearbox housing 5 is fixed on the vehicle body, the driving gear shaft 1 cannot rotate, that is, the single-sided tire is completely locked.

[0031] The design point to be explained is that when the multiple stacked brake pads 4b are worn and thinned, the change is small, and since the inner pushing mechanism 6 rotates, the movement amplitude is amplified, so that the locking mechanism 7 can be clamped between the sleeve 5a, and the clamping distance is deep.

[0032] As shown in Figures 2-4 The steering clutch 4 includes two single-sided brakes, each single-sided brake includes a steering gear 4a, a rotating shaft 4d, a yoke 4e, a return spring 4f, and multiple stacked brake pads 4b, the rotating shaft 4d is rotatably connected with the gearbox housing 5, the steering gear 4a is horizontally slidably installed on the steering rotating shaft 4d, the outer edge of the brake pad 4b is fixedly connected with the gearbox housing 5, the inner edge of the brake pad 4b is slidably connected with the outer edge of the steering gear 4a, the return spring 4f is used to provide an elastic force to the steering gear 4a towards the middle part of the gearbox housing 5, one end of the return spring 4f is in contact with the gearbox housing 5, the other end of the return spring 4f is in contact with 4a, the middle part of 4a is provided with a groove for embedding the return spring 4f, the middle part of the rotating shaft 4d is fixedly provided with a driving gear 4h, both sides of the driving gear 4h are provided with clamping blocks 4h1 clamped with two clamping grooves 4a1, the inner side of the steering gear 4a is provided with the clamping groove 4a1 for clamping the clamping block 4h1, the yoke 4e is rotatably connected with the ring groove 4a2, the yoke 4e is fixedly connected with the steering yoke shaft 4c.

[0033] When the clamping groove 4a1 and the clamping block 4h1 are completely separated, the steering gear 4a is not extruded with the brake pad 4b. Therefore, within one second of just separating, the direction of the vehicle subjected to the resistance of the soil needs to be decelerated. Then, the steering gear 4a is horizontally slid to extrude the steering gear 4a and the brake pad 4b, and decelerate.

[0034] When the steering yoke shaft 4c is pushed to rotate, the steering yoke shaft 4c will drive the yoke 4e to rotate, so that the yoke 4e pushes the steering gear 4a to slide horizontally along the steering yoke shaft 4c, and after the clamping groove 4a1 and the clamping block 4h1 are separated, the power of the driving gear 4h will not be transmitted to the steering gear 4a, so that the steering gear 4a will not rotate, and then the brake process is realized by the extrusion between the steering gear 4a and the brake pad 4b. When the user releases the rotation control of the steering yoke shaft 4c, the brake pad 4b will push 4a to reset, and after the end of 4a and the clamping block 4h1 are in contact, the clamping block 4h1 and the clamping groove 4a1 are clamped due to the continuous rotation of the driving gear 4h, so that the gearbox can continue to drive the driving gear shaft 1 to rotate, and the harvester can proceed to rotate in place.

[0035] As shown in Figure 6 Each locking mechanism 7 includes a sleeve 7a, a contact spring 7b, an annular clamping plate 7c, a rotating ring 7d and a blocking ring 7e. The sleeve 7a is horizontally slidably installed on the driving gear shaft 1, a plurality of clamping strips 1a are fixedly arranged on the outer edge of the driving gear shaft 1, a clamping groove 7a1 is formed on the inner edge of the sleeve 7a, the clamping strips 1a are inserted into the clamping groove 7a1, the annular clamping plate 7c is fixedly installed on the left side of the sleeve 7a, the blocking ring 7e is fixedly installed on the right side of the sleeve 7a, the rotating ring 7d is horizontally slidably installed on the sleeve 7a, the contact spring 7b is sleeved on the sleeve 7a, the sleeve 7a is used to exert an elastic force on the rotating ring 7d away from the annular clamping plate 7c, one end of the contact spring 7b is in contact with the annular clamping plate 7c, the other end of the contact spring 7b is in contact with the rotating ring 7d, a plurality of clamping strips 5b are fixedly arranged on the outer edge of the sleeve 5a, a clamping groove 7c1 for clamping the clamping strips 5b is formed on the inner edge of the annular clamping plate 7c, and the rotating ring 7d is rotationally connected with the inner pushing mechanism 6;

[0036] When the steering gear 4a and the brake pad 4b are in contact, one side end surface of the annular clamping plate 7c is flush with the end surface of the sleeve 5a;

[0037] When the steering gear 4a is excessively pressed against the brake pad 4b, the annular clamping plate 7c is sleeved in the sleeve 5a. When the driving gear shaft 1 rotates, the driving gear shaft 1 can drive the sleeve 7a to rotate through the clamping strip 1a, and the sleeve 7a is rotationally connected between the sleeve 7a and the rotating ring 7d, so that the sleeve 7a can rotate under the connection of the inner pushing mechanism 6. When it is necessary to lock the driving gear shaft 1 and the gearbox housing 5, the inner pushing mechanism 6 is horizontally pushed, the inner pushing mechanism 6 pushes the annular clamping plate 7c to move horizontally, so that the sleeve 7a slides horizontally along the driving gear shaft 1, and when the end of the annular clamping plate 7c abuts against the sleeve 5a, the clamping strip 5b cannot be clamped in the clamping groove 7c1, at this time, the rotating ring 7d is continuously pushed, the abutting spring 7b is compressed, and the clamping strip 5b is clamped in the clamping groove 7c1 during the continuous rotation of the driving gear shaft 1. If the driving gear shaft 1 does not rotate, it means that the driving gear shaft 1 has been locked by the brake function.

[0038] As shown in Figure 5 Each inner pushing mechanism 6 includes two rotating rods 6a, two rotating sleeves 6b and a connecting plate 6c. One end of each rotating rod 6a is fixedly connected to the upper and lower ends of the steering yoke shaft 4c, the other end of the rotating rod 6a is slidably connected to the rotating sleeve 6b, the two rotating sleeves 6b are respectively located on the upper and lower sides of the driving gear shaft 1, the connecting plate 6c is fixedly connected to the two rotating sleeves 6b, and the upper and lower sides of the rotating ring 7d are fixedly provided with rotating shafts 7h. The rotating ring 7d is rotationally connected to the rotating shaft 7h. When the steering yoke shaft 4c drives the yoke 4e to rotate, the steering yoke shaft 4c also drives the rotating rod 6a to rotate, the rotating rod 6a drives the rotating sleeve 6b to rotate, so that the rotating sleeve 6b can drive the rotating shaft 7h to move along the axis of the driving gear shaft 1. In the process of rotating the rotating rod 6a, the rotating sleeve 6b is slidably separated from the rotating rod 6a. The connecting plate 6c increases the structural rigidity between the two rotating sleeves 6b.

[0039] Among the multiple brake pads 4b, there is a probability of complete failure of friction. If the locking mechanism 7 is directly locked, the friction between the driving gear shaft 1 and the gearbox housing 5 will increase, which may cause the gearbox housing 5 to deform. At this time, the locking mechanism 7 cannot be used for clamping, therefore, as shown in Figure 7As shown, the outer edge of the sleeve 5a is provided with a secondary friction mechanism 9, which is horizontally movable and adjustably mounted on the sleeve 5a. The inner side of the secondary friction mechanism 9 and the inner side of the annular clamping plate 7c are both rough surface structures. When the secondary friction mechanism 9 needs to be in contact with the annular clamping plate 7c, the end surface of the secondary friction mechanism 9 is located between the sleeve 5a and the annular clamping plate 7c, so that the secondary friction mechanism 9 is in contact with the annular clamping plate 7c first. This can make the driving gear shaft 1 unable to rotate by the self-contact friction between the secondary friction mechanism 9 and the annular clamping plate 7c. If the driving gear shaft 1 rotates with a large torque, the driving gear shaft 1 can also rotate, because the torque is greater than the friction force, which avoids deforming the gearbox housing 5. Moreover, the size of the friction force can be controlled by the extrusion of the rotating ring 7d on the pressing spring 7b.

[0040] As shown in Figure 7 The secondary friction mechanism 9 includes a friction block 9a and a screw 9b, the screw 9b is engagedly mounted on the friction block 9a, the friction block 9a is provided with a threaded hole for the screw 9b to penetrate and engage, the sleeve 5a is provided with a fixed clamping hole 5c and a working clamping hole 5d, and the inner side of the secondary friction mechanism 9 is provided with a clamping groove three for clamping with the clamping strip two 5b. The clamping groove three makes the connection between the secondary friction mechanism 9 and the sleeve 5a more compact. When the secondary friction mechanism 9 needs to be in contact with the annular clamping plate 7c, the end of the screw 9b is inserted into the working clamping hole 5d. When the secondary friction mechanism 9 does not need to be in contact with the annular clamping plate 7c, the end of the screw 9b is inserted into the fixed clamping hole 5c. At this time, the secondary friction mechanism 9 is retracted, and the end of the annular clamping plate 7c will not be in contact with the secondary friction mechanism 9 when the annular clamping plate 7c is clamped between the clamping strip two 5b.

[0041] As shown in Figure 4 The steering gear 4a is provided with a ring groove 4a2, and the shift fork 4e is in U-shaped structure. The two ends of the shift fork 4e are fixedly connected with the steering shift fork shaft 4c, and the end of the shift fork 4e is fixedly provided with two insertion columns 4j which are inserted into the ring groove 4a2. When the steering shift fork shaft 4c drives the shift fork 4e to rotate, the shift fork 4e pushes the steering gear 4a to slide horizontally through the insertion columns 4j. Before the steering gear 4a is pushed, the steering gear 4a can rotate relative to the insertion columns 4j.

[0042] As shown in Figure 2 and Figure 3 The outer edge of the steering gear 4a is provided with an annular step, and the side of the steering gear 4a close to the brake pad 4b is provided with an extrusion ring 4s. The inner edge of the extrusion ring 4s is in close contact with the outer edge of the steering gear 4a, and one side of the extrusion ring 4s is in contact with the brake pad 4b. The extrusion ring 4s increases the extrusion area, so that the extrusion ring 4s can disperse the pressure applied to the brake pad 4b more uniformly, and the time of friction failure is longer.

[0043] In use, when the harvester needs to turn, by rotating the steering yoke shaft 4c in the corresponding position, the drive gear shaft 1 in the corresponding position is locked, while the other drive gear shaft 1 continues to rotate, so that the rotatable wheels rotate along the locked wheels. If parking is required, both steering yoke shafts 4c are rotated at the same time, so that both drive gear shafts 1 are locked.

[0044] When the wheels need to be locked, the steering yoke shaft 4c is rotated, which drives the yoke 4e to swing, so that the squeeze ring 4s is squeezed between the brake pads 4b, that is, the steering gear 4a is locked, so that the corresponding drive gear shaft 1 is locked.

[0045] In the process of long-term use, the multiple brake pads 4b will be worn and thinned, so that the friction cannot completely lock the drive gear shaft 1. At this time, through the action of the inner pushing mechanism 6 and the locking mechanism 7, in the process of rotating the steering yoke shaft 4c, the inner pushing mechanism 6 drives the locking mechanism 7 to swing. If the friction cannot completely lock the drive gear shaft 1, after the locking mechanism 7 is in contact with the sleeve 5a, if the drive gear shaft 1 can still drive the drive gear shaft 1 to rotate, the locking mechanism 7 and the sleeve 5a can be clamped, so that the drive gear shaft 1 is locked.

[0046] If the multiple brake pads 4b are completely disabled, the secondary friction mechanism 9 is moved out, the annular clamping plate 7c and the secondary friction mechanism 9 can be squeezed by the action of the contact spring 7b, that is, the function of frictionally locking the drive gear shaft 1 is realized, so that the harvester can turn, avoiding the time of waiting for spare parts when the farmer is busy.

[0047] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A harvester steering parking device, comprising a gearbox and a driving gear shaft (1) drivingly connected with the gearbox, a driving gear shaft (1) is provided with a rotatable idler gear (2) and a steering clutch (4) in the gearbox, the idler gear (2) is drivingly connected with the driving gear shaft (1) through a transmission gear shaft (8), the steering clutch (4) is drivingly connected with the idler gear (2), the steering clutch (4) is provided with two rotatable steering yoke shafts (4c) and two horizontally sliding steering gears (4a), characterized in that, Two inner pushing mechanisms (6) and two locking mechanisms (7) are further included, the inner pushing mechanism (6) is in transmission connection with the steering yoke shaft (4c), the inner pushing mechanism (6) is used for pushing the locking mechanism (7) to move towards the gearbox shell (5), a sleeve (5a) for allowing the driving gear shaft (1) to rotate is arranged on the outer shell of the gearbox shell (5), and the sleeve (5a) is used for clamping locking with the locking mechanism (7); When the steering yoke shaft (4c) is not rotated, the steering clutch (4) is not in operation, the steering yoke shaft (4c) remains in the initial position, and the locking mechanism (7) is not clamped with the sleeve (5a); When the steering yoke shaft (4c) is rotated, the steering gear (4a) slides outward, the steering yoke shaft (4c) drives the inner pushing mechanism (6) to rotate, and the inner pushing mechanism (6) pushes the locking mechanism (7) to move towards the sleeve (5a); When the steering gear (4a) is in contact with the brake pad (4b), one side of the locking mechanism (7) is flush with the end of the sleeve (5a), and when the steering gear (4a) is excessively pressed against the brake pad (4b), the locking mechanism (7) is clamped into the sleeve (5a); The steering clutch (4) includes two single-sided brakes, each single-sided brake includes a steering gear (4a), a rotating shaft (4d), a yoke (4e), a return spring (4f) and a plurality of stacked brake pads (4b), the rotating shaft (4d) is in rotation connection with the gearbox shell (5), the steering gear (4a) is horizontally slidably installed on the steering rotating shaft (4d), the outer edge of the brake pad (4b) is fixedly connected with the gearbox shell (5), the inner edge of the brake pad (4b) is slidably connected with the outer edge of the steering gear (4a), the return spring (4f) is used for providing elastic force to the steering gear (4a) towards the middle part of the gearbox shell (5), the middle part of the rotating shaft (4d) is fixedly provided with a driving gear (4h), both sides of the driving gear (4h) are provided with clamping blocks (4h1) clamped with two clamping grooves (4a1), the inner side of the steering gear (4a) is provided with the clamping groove (4a1) for clamping the clamping block (4h1), the yoke (4e) is in rotation connection with the ring groove (4a2), and the yoke (4e) is fixedly connected with the steering yoke shaft (4c); When the clamping groove (4a1) is completely separated from the clamping block (4h1), the steering gear (4a) is not pressed against the brake pad (4b); Each locking mechanism (7) comprises a sleeve (7a), a contact spring (7b), a ring-shaped clamping plate (7c), a swivel ring (7d) and a blocking ring (7e), the sleeve (7a) is horizontally slidably mounted on the driving gear shaft (1), a plurality of clamping strips (1a) are fixedly arranged on the outer edge of the driving gear shaft (1), a clamping groove (7a1) is formed on the inner edge of the sleeve (7a), the clamping strips (1a) are inserted into the clamping groove (7a1), the ring-shaped clamping plate (7c) is fixedly mounted on the left side of the sleeve (7a), the blocking ring (7e) is fixedly mounted on the right side of the sleeve (7a), the swivel ring (7d) is horizontally slidably mounted on the sleeve (7a), the contact spring (7b) is sleeved on the sleeve (7a), the sleeve (7a) is used for exerting an elastic force on the swivel ring (7d) away from the ring-shaped clamping plate (7c), a plurality of clamping strips (5b) are fixedly arranged on the outer edge of the sleeve (5a), a clamping groove (7c1) for clamping the clamping strips (5b) is formed on the inner edge of the ring-shaped clamping plate (7c), and the swivel ring (7d) is rotationally connected with the inner pushing mechanism (6); When the steering gear (4a) is in contact with the brake pad (4b), one side end surface of the ring-shaped clamping plate (7c) is flush with the end surface of the sleeve (5a); When the steering gear (4a) is excessively pressed against the brake pad (4b), the ring-shaped clamping plate (7c) is sleeved in the sleeve (5a); Each inner pushing mechanism (6) comprises two rotating rods (6a), two rotating sleeves (6b) and a connecting plate (6c), one end of each rotating rod (6a) is fixedly connected with the upper and lower ends of the steering yoke shaft (4c), the other end of the rotating rod (6a) is slidably connected with the rotating sleeve (6b), the two rotating sleeves (6b) are respectively located on the upper and lower sides of the driving gear shaft (1), the connecting plate (6c) is fixedly connected with the two rotating sleeves (6b), and the upper and lower sides of the swivel ring (7d) are fixedly provided with rotating shafts (7h), and the rotating sleeves (6b) are rotationally connected with the rotating shafts (7h). A secondary friction mechanism (9) is arranged on the outer edge of the sleeve (5a), the secondary friction mechanism (9) is horizontally movably mounted on the sleeve (5a), and the inner side surface of the ring-shaped clamping plate (7c) is a rough surface structure, when the secondary friction mechanism (9) needs to be in contact with the ring-shaped clamping plate (7c), the end surface of the secondary friction mechanism (9) is located between the sleeve (5a) and the ring-shaped clamping plate (7c).

2. A harvester steering and parking device as claimed in claim 1 wherein, The secondary friction mechanism (9) comprises a friction block (9a) and a screw (9b), the screw (9b) is engagedly mounted on the friction block (9a), a threaded hole is formed in the friction block (9a) and used for penetrating and engagingly connecting the screw (9b), a fixed clamping hole (5c) and a working clamping hole (5d) are formed in the sleeve (5a), and a clamping groove is formed in the inner side of the secondary friction mechanism (9) and used for clamping the clamping strips (5b), when the secondary friction mechanism (9) needs to be in contact with the ring-shaped clamping plate (7c), the end of the screw (9b) is inserted into the working clamping hole (5d), and when the secondary friction mechanism (9) does not need to be in contact with the ring-shaped clamping plate (7c), the end of the screw (9b) is inserted into the fixed clamping hole (5c).

3. A harvester steering and parking device as claimed in claim 2 wherein, A ring groove (4a2) is formed on the steering gear (4a), the shift fork (4e) is in U-shaped structure, both ends of the shift fork (4e) are fixedly connected with the steering shift fork shaft (4c), and two insertion columns (4j) are fixedly arranged at the end of the shift fork (4e) and are inserted into the ring groove (4a2).

4. A harvester steering and parking device as claimed in claim 3 wherein, An annular step is arranged on the outer edge of the steering gear (4a), an extrusion ring (4s) is arranged on the side of the steering gear (4a) close to the brake pad (4b), the inner edge of the extrusion ring (4s) is in close contact with the outer edge of the steering gear (4a), and one side of the extrusion ring (4s) is in contact with the brake pad (4b).

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