Novel tractor parking lock

Abstract

The invention provides a novel tractor parking lock, and relates to the technical field of tractor parking locks, the novel tractor parking lock comprises an outer seat, the inner side of the outer seat is rotatably connected with an inner sleeve, the inner side of the inner sleeve comprises a key groove connected with a tractor driving shaft, and the outer side face of the inner sleeve comprises an end groove and an inner table; a hinge roller is spherically hinged to the side, away from the end groove, of the inner table of the inner sleeve, the inner table comprises an inclined roller groove and an angle face which are matched with the hinge roller, the inclined roller groove and the angle face are distributed in groups and connected, an umbrella head is fixedly connected to the other end of the hinge roller, and a front groove is formed in the outer base. A supporting ring with the S-shaped longitudinal section is fixedly connected into the front groove. After the swing ring drives the ejector block to move, the sliding ejector assembly is pushed to limit a part formed by connecting the hinge roller and the umbrella head, then rotation of the outer base and the inner sleeve is limited, the difference between the advancing limiting moving range and the retreating limiting moving range of a tractor is smaller, and the locking stability is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of tractor parking locks, in particular to a novel tractor parking lock. Background Art

[0002] The main function of the tractor parking lock is to lock the vehicle to prevent it from moving when the tractor is parked. It is particularly suitable for situations where the hydraulic system does not work or the wet clutch is disconnected, and the engine resistance cannot be used to assist braking. The outer rocker arm is controlled by the joystick to cooperate with the inner rocker arm and the chuck to engage and limit, so as to achieve the locking of the tractor's four-wheel drive shaft. However, the tractor parking lock in the prior art is carried out by limiting, and there is a problem that the difference between the forward and backward restricted movement ranges of the tractor is too large. For details, please refer to the published patent CN220523284U, which specifically includes: a chuck is provided on the right side of the inner rocker arm, and the inner side of the chuck is connected to the four-wheel drive shaft through a spline. By setting the outer rocker arm to cooperate with the inner rocker arm and the chuck to engage and limit, when the tractor parking hydraulic system does not work, the wet clutch is disconnected, and the engine resistance cannot be used to assist braking, the vehicle can be locked to prevent movement. In the above, the inner rocker arm and the chuck are engaged. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the present invention provides a novel tractor parking lock, which solves the problem in the prior art that the locking of the tractor's four-wheel drive axle has a large difference between the forward and backward restricted movement ranges of the tractor.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a new type of tractor parking lock, including an outer seat, the inner side of the outer seat is rotatably connected to an inner sleeve, the inner side of the inner sleeve includes a keyway connected to the tractor drive shaft, the outer side of the inner sleeve includes an end groove and an inner platform, the inner sleeve is ball-hinged with a hinge roller on the side of the inner platform away from the end groove, the inner platform includes an oblique roller groove and an angle surface matched with the hinge roller, the oblique roller groove and the angle surface are distributed in groups and connected, and the other end of the hinge roller is fixedly connected to an umbrella head;

[0007] The interior of the outer seat includes a front groove, the interior of the front groove is fixedly connected to a support ring with an S-shaped longitudinal section, the rear side wall of the support ring is provided with separated and distributed outer grooves, and a sliding top assembly is provided in the middle, and the umbrella head extends out of the inner side of the rear part of the support ring when it is located in the inclined roller groove;

[0008] The outer side of the end groove of the inner sleeve is rotatably connected to an outer ring located on the front side of the support ring, the rear side of the outer ring is fixedly connected to a top block of an extrusion top sliding top assembly, the front side of the outer ring is fixedly connected to a swing ring, the end of the swing ring extends out from an outer seat, the outer side surface of the outer seat is fixedly connected to a fixed seat, a telescopic power member is rotatably connected between one end of the swing ring located outside the outer seat and the fixed seat, and the telescopic power member is electrically connected to a control switch.

[0009] Preferably, a fixed tooth is fixedly connected to the outer side surface of the outer ring, the bending direction of the fixed tooth is toward the side of the hinge roller biased towards the umbrella head, and the part of the swing ring passing through the outer seat corresponds to the position of one of the fixed teeth.

[0010] Preferably, the sliding top assembly includes a slider, a fixed plate and a spring, the side wall of the support ring located in the middle is provided with a sliding groove, the slider is slidably connected to the sliding groove, the fixed plate is fixedly connected to one side of the sliding groove toward the bending direction of the fixed tooth, and the other end extends into the slider, and the spring is fixedly connected between the fixed plate and the slider.

[0011] Preferably, an arc groove is provided inside the outer seat, and the arc groove is inclined along the axis of the outer seat, the inclination direction of the arc groove is consistent with the inclination direction of the inclined roller groove, and an arc bar is slidably provided inside the arc groove, the outer side of the arc bar includes a rubber layer with a thickness of 2 mm, and the arc bar extends out of the arc groove by 3 mm.

[0012] Preferably, an outer conical surface is provided at one end of the inner platform of the inner sleeve close to the end groove, and the large diameter end included in the umbrella head is located on the outside of the outer conical surface.

[0013] Preferably, the sliding block is provided with a wedge surface one on a side away from the fixed plate, and the top block includes a wedge surface two for cooperating with the wedge surface one.

[0014] Preferably, the inner sleeve is fixedly connected with a fixing ring on a side of the inner platform away from the end groove, and a matching groove is provided at the rear end of the outer seat, the fixing ring extends into the matching groove and the two rotate relatively.

[0015] Preferably, a side groove is provided on the side wall of the outer seat and on the side close to the fixed seat, and the swing ring passes through the side groove accordingly, and a mounting hole is provided on the horizontal part included in the lower part of the fixed seat.

[0016] (III) Beneficial effects

[0017] The present invention provides a novel tractor parking lock, which has the following beneficial effects:

[0018] 1. In the present invention, the swing ring drives the top block to move, and then pushes the sliding top assembly to restrict the component formed by the hinge roller and the umbrella head, thereby restricting the rotation of the outer seat and the inner sleeve, and the difference between the forward and backward restricted movement ranges of the tractor is smaller, which greatly improves the locking stability.

[0019] 2. In the present invention, two different degrees of locking lengths are achieved by rotating the inner sleeve to cooperate with the sliding top assembly, the support ring and the fixed teeth, so that the reliability of the structure after locking is different. During the process, the hinge roller cooperates with the arc bar to make the hinge roller move away from the inclined roller groove and cross the arc bar. The resistance is greater, especially the restriction on the forward movement direction of the tractor is more reliable. At the same time, it can be operated by controlling the switch, which is more convenient to operate than using an external rocker arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the outer seat in the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the present invention after the outer seat is removed;

[0023] Figure 4 It is a schematic diagram of the structure of the outer seat after being connected with the support ring and the arc strip in the present invention;

[0024] Figure 5 Dismantling for the present invention Figure 4 The schematic diagram of the structure after the structure;

[0025] Figure 6 for Figure 4 The enlarged view of point A in the middle;

[0026] Figure 7 For the present invention Figure 3 Schematic diagram of the structure after the support ring is removed;

[0027] Figure 8 for Figure 7 The enlarged view of point B in the middle;

[0028] Fig. 9 Compared with the present invention Figure 4 Schematic diagram from another perspective.

[0029] Among them, 1. outer seat; 2. inner sleeve; 3. fixed seat; 4. telescopic power part; 5. swing ring; 6. side groove; 7. arc groove; 8. front groove; 9. hinge roller; 10. rear bevel; 11. arc bar; 12. fixed ring; 13. fixed tooth; 14. umbrella head; 15. top block; 16. outer ring; 17. inner platform; 18. sliding top assembly; 19. slider; 20. fixed plate; 21. spring; 22. support ring. DETAILED DESCRIPTION

[0030] 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.

[0031] Embodiment 1:

[0032] like Figure 1-9 As shown, an embodiment of the present invention provides a new type of tractor parking lock, including an outer seat 1, the inner side of the outer seat 1 is rotatably connected to an inner sleeve 2, the inner side of the inner sleeve 2 includes a keyway connected to the tractor drive shaft, and the new type of tractor parking lock is sleeved on the outer side of the tractor drive shaft through the keyway included in the inner sleeve 2, thereby realizing key connection. The tractor drive shaft here can refer to the four-wheel drive shaft recorded in the published patent CN220523284U, the outer side surface of the inner sleeve 2 includes an end groove and an inner platform 17, refer to the attached specification Figure 3 It can be seen that the inner sleeve 2 includes a three-section structure, namely, an end groove, an inner platform 17, and an outer edge on the side of the inner platform 17 away from the end groove. The outer edge of the inner sleeve 2 is fixedly connected with a fixing ring 12 on the side facing the inner platform 17. The rear end of the outer seat 1 is provided with a matching groove. The fixing ring 12 extends into the matching groove and the two rotate relatively. The inner platform 17 is located between the end groove and the outer edge.

[0033] The outer edge of the inner sleeve 2 is ball-hinged with a hinge roller 9, and the inner platform 17 includes an oblique roller groove and an angle surface that cooperate with the hinge roller 9. The oblique roller groove and the angle surface are distributed in groups and connected. The other end of the hinge roller 9 is fixedly connected to an umbrella head 14. In the above, the oblique roller groove is arranged obliquely along the surface of the inner platform 17, and the inner platform 17 is distributed along the oblique roller groove along the circumference of the axis of the inner sleeve 2. The inclination direction of the oblique roller groove is consistent with the main motion direction of the tractor drive shaft, that is, the rotation direction of the tractor drive shaft is consistent when the tractor moves forward, and the rear end of the angle surface is consistent with the hinge roller. The hinged joint of the outer edge of the inner sleeve 2 corresponds to the front and rear, and when the hinge roller 9 rotates to the front and rear direction, it is flush with the side surface of the angle surface away from the inclined roller groove. The connection between the inclined roller groove and the angle surface is smoothly transitioned. The inclined roller groove matches the outer surface shape of the hinge roller 9, which facilitates the hinge roller 9 to enter the angle surface from the inclined roller groove, or enter the inclined roller groove from the angle surface. When the hinge roller 9 is in the inclined roller groove, it does not contact the inner wall of the outer seat 1 on the rear side of the front groove 8, and when the hinge roller 9 is in the angle surface, the hinge roller 9 contacts the inner wall of the outer seat 1 on the rear side of the front groove 8.

[0034] The interior of the outer seat 1 includes a front groove 8, and the interior of the front groove 8 is fixedly connected to a support ring 22 with an S-shaped longitudinal section. The rear side wall of the support ring 22 is provided with separated outer grooves, and a sliding top assembly 18 is provided in the middle. When the umbrella head 14 is located in the inclined roller groove, it extends out of the inner side of the rear part of the support ring 22. The part of the outer seat 1 located in the front side of the front groove 8 is sleeved on the outer side of the end groove of the inner sleeve 2. The support ring 22 is slidably provided with a top assembly 18 at the S-shaped middle side wall, and the sliding top assembly 18 includes a slider 19, a fixing plate 20 and a spring 21. The S-shaped middle side wall of the support ring 22 is provided with a slide groove, the slider 19 is slidably connected to the slide groove, and the fixing plate 20 is fixed to one side of the slide groove toward the bending direction of the fixed tooth 13. The spring 21 is fixedly connected between the fixed plate 20 and the slider 19. The fixed plate 20 and the slider 19 are slidably connected. Under the action of the spring 21, the slider 19 moves in the axial direction of the support ring 22, thereby realizing the reset of the slider 19, and then the slider 19 is pushed against the inner part of the support ring 22 facing the front side and close to the axis. The slider 19 is provided with a wedge surface 1 on the side away from the fixed plate 20, and the top block 15 includes a wedge surface 2 for cooperating with the wedge surface 1. In the process of the top block 15 rotating with the swing ring 5, the slider 19 is pushed to move in the axial direction away from the support ring 22 through the cooperation of the wedge surface 1 and the wedge surface 2, and the spring 21 is compressed in the process;

[0035] The outer side of the end groove of the inner sleeve 2 is rotatably connected with an outer ring 16 located on the front side of the support ring 22, and the outer side surface of the outer ring 16 is fixedly connected with a fixed tooth 13, and the bending direction of the fixed tooth 13 is toward the hinge roller 9 and deviates from the umbrella head 14. The part of the swing ring 5 passing through the outer seat 1 corresponds to the position of one of the fixed teeth 13, and the rear side of the outer ring 16 is fixedly connected with the top block 15 of the top extrusion sliding top assembly 18, and the front side of the outer ring 16 is fixedly connected with the swing ring 5, and the end of the swing ring 5 extends out of the outer seat 1, and the outer side surface of the outer seat 1 is fixedly connected with a fixed seat 3, and a telescopic power part 4 is rotatably connected between one end of the swing ring 5 located outside the outer seat 1 and the fixed seat 3, and the telescopic power part 4 is electrically connected to a control switch, wherein the control switch includes a control unit and a power-on switch, the control unit is a PCL controller, and the power-on switch is a central lock driver. The control switch here can refer to the central lock of a car, and the telescopic power part 4 mentioned above can be a cylinder or an electric push rod, and the telescopic power part 4 is controlled by the control switch to extend or retract a fixed stroke.

[0036] A side groove 6 is provided on the side wall of the outer seat 1 and on the side close to the fixed seat 3, and the swing ring 5 passes through the side groove 6 accordingly. A mounting hole is provided on the horizontal part included in the lower part of the fixed seat 3. The above-mentioned mounting hole of the fixed seat 3 is connected to the tractor by using screws to complete the installation of the new tractor parking lock.

[0037] Working principle: after the new tractor parking lock is installed on the tractor, the telescopic power part 4 is extended by controlling the control switch, thereby driving the swing ring 5 to rotate upward. During the process, the swing ring 5 drives the outer ring 16 to rotate, thereby driving the top block 15 to push the sliding top assembly 18. Specifically, the top block 15 pushes the slider 19 to move away from the axis direction of the support ring 22 through the cooperation of the wedge surface 1 and the wedge surface 2. During the process, the spring 21 is compressed, and then the extended slider 19 hinders the movement of the umbrella head 14 with the inner sleeve 2. Once the inner sleeve 2 drives the hinge roller 9 to rotate, the umbrella head 14 is limited to the distribution range between the two adjacent sliders 19. If the hinge roller 9 does as Figure 3 In the arrangement direction, when the inner sleeve 2 is driven by the tractor drive shaft to rotate clockwise, the umbrella head 14 is limited to the distribution range between two adjacent sliders 19. At this time, the hinge roller 9 is still located in the inclined roller groove. After the slider 19 is pushed back by the spring 21, the relative rotation of the outer seat 1 and the inner sleeve 2 is restored; and when the inner sleeve 2 is driven by the tractor drive shaft to rotate counterclockwise, the umbrella head 14 will be blocked by the slider 19 and then rotate to the angle surface, and further the umbrella head 14 rotates to the outer groove, and then is blocked by the fixed tooth 13 connected to the outer ring 16. At this time, locking is also achieved. When the telescopic power member 4 retracts, it drives the swing ring 5 to swing, and then the swing ring 5 drives the outer ring 16 to make the fixed tooth 13 push the umbrella head 14 to re-enter the outer groove. In the process, the hinge roller 9 re-enters the inclined roller groove in coordination with the rotation of the inner sleeve 2.

[0038] Embodiment 2:

[0039] The difference between this embodiment and the first embodiment is that: on the basis of the first embodiment, an arc groove 7 is arranged inside the outer seat 1, and the arc groove 7 is inclined along the axis of the outer seat 1, and the inclination direction of the arc groove 7 is consistent with the inclination direction of the inclined roller groove. An arc bar 11 is slidingly arranged inside the arc groove 7, and the outer side of the arc bar 11 includes a rubber layer with a thickness of 2 mm. The arc bar 11 extends out of the arc groove 7 by 3 mm, and the distribution rotation direction of the arc groove 7 is consistent with the rotation direction of the inclined roller groove. After the umbrella head 14 of the hinge roller 9 is driven by the slider 19 to enter the outer groove, it is blocked by the arc groove 7. During the process, the rubber layer on the outer side of the arc bar 11 is compressed, increasing the resistance to continued movement. On the contrary, the umbrella head 14 of the hinge roller 9 is dragged by the fixed tooth 13 and cooperates with the rotation of the inner sleeve 2, and crosses the arc bar 11 from the hinge roller 9 to reach between the arc bar 11 and the inclined roller groove, and is pulled into the inclined roller groove as the inner sleeve 2 rotates.

[0040] An outer cone is provided at one end of the inner platform 17 of the inner sleeve 2 close to the end groove, and the large diameter end of the umbrella head 14 is located on the outside of the outer cone. The outer cone is used to enlarge the distance between the inner platform 17 of the inner sleeve 2 and the support ring 22, providing movement space for the umbrella head 14, so as to facilitate the hinge roller 9 to turn into the inclined roller groove.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel tractor parking lock, comprising an outer seat (1), characterized in that: The inner side of the outer seat (1) is rotatably connected to an inner sleeve (2), the inner side of the inner sleeve (2) includes a keyway connected to the tractor drive shaft, the outer side of the inner sleeve (2) includes an end slot and an inner platform (17), the inner sleeve (2) is ball-hinged with a hinge roller (9) on the side of the inner platform (17) away from the end slot, the inner platform (17) includes an oblique roller groove and an angle surface that match the hinge roller (9), the oblique roller groove and the angle surface are distributed in groups and connected, and the other end of the hinge roller (9) is fixedly connected to an umbrella head (14); The outer seat (1) includes a front groove (8) inside, a support ring (22) with an S-shaped longitudinal section is fixedly connected inside the front groove (8), the rear side wall of the support ring (22) is provided with separated and distributed outer grooves, and a sliding top assembly (18) is provided in the middle, and the umbrella head (14) extends out of the inner side of the rear part of the support ring (22) when it is located in the inclined roller groove; The outer side of the end groove of the inner sleeve (2) is rotatably connected to an outer ring (16) located in front of the support ring (22); the rear side of the outer ring (16) is fixedly connected to a top block (15) of an extrusion top sliding top assembly (18); the front side of the outer ring (16) is fixedly connected to a swing ring (5); the end of the swing ring (5) extends out from the outer seat (1); the outer side surface of the outer seat (1) is fixedly connected to a fixed seat (3); a telescopic power member (4) is rotatably connected between one end of the swing ring (5) located outside the outer seat (1) and the fixed seat (3); and the telescopic power member (4) is electrically connected to a control switch.

2. A novel tractor parking lock according to claim 1, characterized in that: The outer side surface of the outer ring (16) is fixedly connected with a fixed tooth (13), the bending direction of the fixed tooth (13) is toward the hinge roller (9) and is biased toward the umbrella head (14), and the part of the swing ring (5) that passes through the outer seat (1) corresponds to the position of one of the fixed teeth (13).

3. A novel tractor parking lock according to claim 2, characterized in that: The sliding top assembly (18) comprises a slider (19), a fixed plate (20) and a spring (21); a side wall of the support ring (22) located in the middle is provided with a sliding groove; the slider (19) is slidably connected to the sliding groove; the fixed plate (20) is fixedly connected to one side of the sliding groove in a bending direction toward the fixed tooth (13), and the other end extends into the slider (19); the spring (21) is fixedly connected between the fixed plate (20) and the slider (19).

4. A novel tractor parking lock according to claim 3, characterized in that: An arc groove (7) is arranged inside the outer seat (1), and the arc groove (7) is inclined along the axis of the outer seat (1). The inclination direction of the arc groove (7) is consistent with the inclination direction of the inclined roller groove. An arc strip (11) is slidably arranged inside the arc groove (7), and the outer side of the arc strip (11) includes a rubber layer with a thickness of 2 mm. The arc strip (11) extends out of the arc groove (7) by a distance of 3 mm.

5. A novel tractor parking lock according to claim 1, characterized in that: An outer cone is provided at one end of the inner platform (17) of the inner sleeve (2) close to the end groove, and the large diameter end of the umbrella head (14) is located outside the outer cone.

6. A novel tractor parking lock according to claim 3 or 5, characterized in that: The sliding block (19) is provided with a wedge surface one on a side away from the fixing plate (20), and the top block (15) includes a wedge surface two for cooperating with the wedge surface one.

7. A novel tractor parking lock according to claim 1, characterized in that: The inner sleeve (2) is fixedly connected with a fixing ring (12) on the side of the inner platform (17) away from the end groove, and the rear end of the outer seat (1) is provided with a matching groove, the fixing ring (12) extends into the matching groove, and the two rotate relative to each other.

8. A novel tractor parking lock according to claim 1, characterized in that: A side groove (6) is provided on the side wall of the outer seat (1) and on the side close to the fixed seat (3), and the swing ring (5) passes through the side groove (6) accordingly. A mounting hole is provided on the horizontal part included in the lower part of the fixed seat (3).

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