Tractor and traction component thereof

Abstract

The present invention belongs to the technical field of tractors, and discloses a tractor and its traction assembly, wherein the traction assembly comprises: a locking mechanism, which is rotatably arranged above a vehicle frame, and comprises a round pin, the inside of the round pin is hollow, and a cross-shaped slot is opened at the top thereof, and the outer end of the cross-shaped slot extends downwardly from the side wall of the top of the round pin to open a vertical slot, and an extrusion block is rotatably installed at the bottom of the vertical slot, and the lower end surface of the extrusion block abuts against an extrusion rod, and the lower end surface of the extrusion rod is installed with a second disc; a supporting mechanism, which is arranged below the locking mechanism, comprises a steering assembly, a third disc and a bearing, and a convex block is fixedly installed on the lower end surface of the third disc, and a ball is symmetrically abutted against the lower end surface of the third disc, and a round rod is rotatably installed on the lower end surface of the ball, and a fixed block is installed on the lower end surface of the round rod, and the outer ring of the bearing is fixedly installed on the inner ring of the fixed block, and the inner ring of the bearing is fixedly installed with an auxiliary wheel. The present invention solves the problem that the existing tractor is unstable and easy to overturn when turning.

Description

Technical Field

[0001] The invention relates to the technical field of tractors, in particular to a tractor and a tractor assembly thereof. Background Art

[0002] The front vehicle with driving capability is called a tractor, and the rear vehicle without driving capability is called a trailer. The AGC (Automatic Guided Cart) tractor is an automatically guided electric vehicle that usually tows a trailer through its own towing components for automated towing work within factories, warehouses, and logistics centers.

[0003] The Chinese patent disclosed "an electric tractor with anti-warping function" with application number 202322582749.9, includes a base plate, a plurality of rollers are symmetrically installed on the lower end of the base plate, two vertical plates are symmetrically fixedly connected to the upper end of the base plate, two movable plates are slidably connected between the two vertical plates, and the upper ends of the two movable plates are fixedly connected to connecting plates, and an anti-warping mechanism for the electric tractor is arranged on the base plate.

[0004] Although the device can prevent rollover caused by the front of the vehicle tilting by changing the distribution of the cargo, the number of supporting wheels of the device remains fixed. When turning with a larger load, the tractor will have excessive outward camber, resulting in unstable cornering. When the outward tilt angle exceeds the safe range, it will cause the tractor to overturn. Summary of the invention

[0005] The object of the present invention is to provide a tractor and a tractor assembly thereof, which solves the problem that the existing tractor is unstable and easily overturned when turning.

[0006] To achieve the above object, the present invention provides the following technical solution: a traction assembly of a tractor, comprising a frame, characterized in that it also includes:

[0007] The locking mechanism is rotatably arranged above the frame, and includes a round pin, the inside of which is hollow, and a cross-shaped slot is opened on the top of the round pin, and the outer end of the cross-shaped slot extends downward from the side wall of the top of the round pin to open a vertical slot, and an extrusion block is installed at the bottom of the vertical slot, and the lower end surface of the extrusion block is abutted with an extrusion rod, and the lower end surface of the extrusion rod is installed with a second disc; when the round pin is inserted into the round hole of the trailer, the second disc rises, driving the extrusion rod to squeeze the extrusion block, and the extrusion block is fixed in the round hole of the trailer;

[0008] The supporting mechanism is arranged below the locking mechanism, and comprises a steering assembly, a third disc and a bearing, wherein a protrusion is fixedly mounted on the lower end surface of the third disc, a ball is symmetrically abutted on the lower end surface of the third disc, a round rod is rotatably mounted on the lower end surface of the ball, a fixed block is mounted on the lower end surface of the round rod, an outer ring of the bearing is fixedly mounted on the inner ring of the fixed block, and an auxiliary wheel is fixedly mounted on the inner ring of the bearing; when the third disc drives the protrusion to rotate, the ball will be squeezed, and the ball drives the auxiliary wheel to descend through the round rod, the fixed block and the bearing, and at the same time, the rotating assembly drives the auxiliary wheel to turn through the round rod.

[0009] Preferably, a third gear is rotatably mounted on the upper end surface of the frame, a support column is fixedly mounted on the upper end surface of the third gear, and the upper end surface of the support column is fixedly connected to the third disc.

[0010] Preferably, an electric telescopic rod is fixedly mounted on the upper end surface of the third disc, and the upper end surface of the electric telescopic rod is fixedly connected to the second disc.

[0011] Preferably, a torsion spring is installed at the rotational connection between the round pin and the extrusion block.

[0012] Preferably, a spring is symmetrically mounted on the upper end surface of the second disc, a first disc is mounted on the side of the spring away from the second disc, and the upper end surface of the first disc is fixedly connected to a round pin.

[0013] Preferably, the extrusion rod is slidably mounted on the inner wall of the round pin.

[0014] Preferably, outer walls on both sides of the protrusion have sloped surfaces.

[0015] Preferably, the steering assembly includes a limit rod symmetrically fixedly mounted on the outer wall of the round rod, and a first gear and a second gear are slidably mounted on the outer walls of the limit rod on both sides, respectively, the lower end surfaces of the first gear and the second gear are rotatably mounted on the frame, and the first gear and the second gear are meshed with the third gear.

[0016] Preferably, a tension spring is sleeved on the outer wall of the round rod, the lower end of the tension spring is mounted on the fixing block, and the upper end of the tension spring is mounted on the vehicle frame.

[0017] Preferably, the tractor comprises a traction assembly of the tractor, and also comprises a front baffle fixedly mounted on the outer wall of the frame; and also comprises a steering wheel and a driving wheel, both of which are symmetrically rotatably mounted on the lower end surface of the frame.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention is provided with a supporting mechanism. When the frame completes the turn, the frame drives the first gear and the second gear to rotate around the outer wall of the third gear. Figure 3 and Figure 5As shown, here taking a left turn as an example, the first gear and the second gear will rotate counterclockwise around the third gear (from the perspective of the round pin looking at the frame), the first gear drives the round rod on the same side to rotate, the round rod drives the ball to move, the ball first abuts against the slope surface on the protrusion, and is finally squeezed by the protrusion, the ball drives the round rod to move downward, the round rod drives the limit rod to slide downward on the first gear, the round rod drives the fixed block to move downward and stretch the tension spring, the fixed block drives the auxiliary wheel to descend through the bearing, and the lateral stability and grip of the frame are improved by increasing the amount of tire contact, reducing the possibility of overturning;

[0020] The present invention is provided with a steering assembly. Taking left turn as an example, the first gear drives the round rod to rotate counterclockwise at a certain angle through the limit rod, the round rod drives the fixed block to rotate, and the fixed block drives the auxiliary wheel to rotate at a certain angle through the bearing, thereby further improving stability;

[0021] The present invention is provided with a locking mechanism, the electric telescopic rod drives the second disc to rise, the second disc drives the spring and the extrusion rod to rise, the spring drives the first disc to rise, the first disc drives the round pin to rise, when the round pin is inserted into the round hole of the trailer hook, the trailer hook will squeeze the first disc, the first disc stops rising, and the first disc drives the round pin to stop rising, because the electric telescopic rod continues to work at this time, the electric telescopic rod will drive the second disc to continue to rise, the second disc will compress the spring and drive the extrusion rod to rise in the round pin, at this time the extrusion rod will squeeze the extrusion block, the extrusion block will turn outward in the round pin and abut against the inner wall of the trailer hook to complete the locking, at this time, because the first disc abuts on the trailer hook, the first disc presses the frame downward, and after the frame is subjected to force, it will be transmitted to the driving wheel, thereby increasing the contact pressure between the driving wheel and the ground to prevent slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of an existing tractor;

[0023] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 3 for Figure 2 Schematic diagram of the overall structure from another perspective;

[0025] Figure 4 for Figure 3 Another perspective overall structure diagram;

[0026] Figure 5 This is a schematic diagram of the present invention without the frame;

[0027] Figure 6 for Figure 5 Remove the round pin schematic diagram;

[0028] Figure 7This is a schematic diagram of the installation position of the tension spring of the present invention;

[0029] Figure 8 It is an internal cross-sectional view of the round pin of the present invention.

[0030] In the figure: 1, frame; 2, front baffle; 4, steering wheel; 5, auxiliary wheel; 6, driving wheel; 7, round pin; 8, first disc; 9, spring; 10, second disc; 11, electric telescopic rod; 12, third disc; 13, bump; 1301, ramp surface; 14, first gear; 1401, second gear; 15, support column; 16, third gear; 17, ball; 18, round rod; 19, limit rod; 20, tension spring; 21, fixing block; 22, bearing; 23, extrusion block; 24, extrusion rod. DETAILED DESCRIPTION

[0031] See also Figures 1 to 8 The present invention provides a technical solution: a traction assembly of a tractor, comprising a frame 1, characterized in that it also includes:

[0032] The locking mechanism is rotatably arranged above the frame 1, and includes a round pin 7, the inside of which is hollow, and a cross-shaped slot is opened on the top of the round pin 7, and the outer end of the cross-shaped slot extends downward from the top side wall of the round pin 7 to open a vertical slot, and an extrusion block 23 is rotatably installed at the bottom of the vertical slot, and the lower end surface of the extrusion block 23 abuts against an extrusion rod 24, and the lower end surface of the extrusion rod 24 is installed with a second disc 10; when the round pin 7 is inserted into the round hole of the trailer, the second disc 10 rises, driving the extrusion rod 24 to squeeze the extrusion block 23, and the extrusion block 23 is fixed in the round hole of the trailer;

[0033] The supporting mechanism is arranged below the locking mechanism, and comprises a steering assembly, a third disc 12 and a bearing 22. A convex block 13 is fixedly mounted on the lower end surface of the third disc 12. A ball 17 is symmetrically abutted on the lower end surface of the third disc 12. A round rod 18 is rotatably mounted on the lower end surface of the ball 17. A fixing block 21 is mounted on the lower end surface of the round rod 18. The outer ring of the bearing 22 is fixedly mounted on the inner ring of the fixing block 21. An auxiliary wheel 5 is fixedly mounted on the inner ring of the bearing 22. When the third disc 12 drives the convex block 13 to rotate, the ball 17 is squeezed. The ball 17 drives the auxiliary wheel 5 to descend through the round rod 18, the fixing block 21 and the bearing 22. At the same time, the rotating assembly drives the auxiliary wheel 5 to turn through the round rod 18.

[0034] The round rod 18 drives the auxiliary wheel 5 to turn through the fixed block 21 and the outer ring of the bearing 22, and the auxiliary wheel 5 rotates on the inner ring of the bearing 22;

[0035] Further, such as Figure 3As shown, a third gear 16 is rotatably mounted on the upper end surface of the frame 1, a support column 15 is fixedly mounted on the upper end surface of the third gear 16, and the upper end surface of the support column 15 is fixedly connected to the third disc 12;

[0036] Further, such as Figure 3 As shown, the upper end surface of the third disc 12 is fixedly mounted with an electric telescopic rod 11, and the upper end surface of the electric telescopic rod 11 is fixedly connected to the second disc 10;

[0037] The electric telescopic rod 11 rises or falls, driving the second disc 10 to rise or fall;

[0038] Further, such as Figure 8 As shown, a torsion spring (not shown in the figure) is installed at the rotation connection between the round pin 7 and the extrusion block 23;

[0039] When the extrusion rod 24 moves upward, it pushes the extrusion block 23 to rotate outward with the rotation connection between the extrusion block 23 and the round pin 7 as the rotation axis; when the extrusion block 23 is not squeezed by the extrusion rod 24, the torsion spring drives the extrusion block 23 to turn inward in the round pin 7 to complete the folding;

[0040] Further, such as Figure 4 As shown, a spring 9 is symmetrically mounted on the upper end surface of the second disc 10, a first disc 8 is mounted on the side of the spring 9 away from the second disc 10, and the upper end surface of the first disc 8 is fixedly connected to a round pin 7;

[0041] The second disc 10 drives the first disc 8 to move through the spring 9, and the first disc 8 drives the round pin 7 to move;

[0042] Further, such as Figure 6 As shown, the extrusion rod 24 is slidably mounted on the inner wall of the round pin 7;

[0043] Further, such as Figures 2 to 4 As shown, the outer walls on both sides of the protrusion 13 have slope surfaces 1301;

[0044] The ball 17 moves on the slope surface 1301 and finally abuts against the protrusion 13;

[0045] Further, such as Figure 5 and Figure 6 As shown, the steering assembly includes a limit rod 19 symmetrically fixedly mounted on the outer wall of the round rod 18, and the first gear 14 and the second gear 1401 are slidably mounted on the outer walls of the two limit rods 19 respectively, and the lower end surfaces of the first gear 14 and the second gear 1401 are both rotatably mounted on the frame 1, and the first gear 14 and the second gear 1401 are both meshed with the third gear 16, and the first gear 14, the second gear 1401 and the third gear 16 are the same size;

[0046] When the first gear 14 and the second gear 1401 rotate around the third gear 16, the round rod 18 is driven to rotate through the limiting rod 19;

[0047] Further, such as Figure 6 and Figure 7 As shown, the outer wall of the round rod 18 is sleeved with a tension spring 20, the lower end of the tension spring 20 is mounted on the fixing block 21, and the upper end of the tension spring 20 is mounted on the frame 1;

[0048] When the tension spring 20 contracts, it drives the fixed block 21 to rise, and the fixed block 21 drives the auxiliary wheel 5 to rise through the bearing 22, so that it maintains a certain height;

[0049] Further, such as Figure 1 As shown, the tractor comprises a traction assembly of the tractor, and also comprises a front baffle 2 fixedly mounted on the outer wall of the frame 1; and also comprises a steering wheel 4 and a driving wheel 6, which are symmetrically rotatably mounted on the lower end surface of the frame 1, and a lithium battery and a control panel (not shown in the figure) are installed in the frame 1;

[0050] The front baffle 2 can clear obstacles in front of the frame 1 to prevent the frame 1 from overturning. The steering wheel 4 drives the frame 1 to turn, and the driving wheel 6 drives the frame 1 to move.

[0051] Working principle: Step 1: When the frame 1 moves to the bottom of the trailer, the control panel controls the electric telescopic rod 11 to extend, the electric telescopic rod 11 drives the second disc 10 to rise, the second disc 10 drives the spring 9 and the extrusion rod 24 to rise, the spring 9 drives the first disc 8 to rise, the first disc 8 drives the round pin 7 to rise, when the round pin 7 is inserted into the round hole of the trailer hook, the trailer hook will squeeze the first disc 8, the first disc 8 stops rising, the first disc 8 drives the round pin 7 to stop rising, because the electric telescopic rod 11 Continuing to work, the electric telescopic rod 11 will drive the second disc 10 to continue to rise, the second disc 10 will compress the spring 9 and drive the extrusion rod 24 to rise in the round pin 7, at this time the extrusion rod 24 will squeeze the extrusion block 23, the extrusion block 23 will turn outward in the round pin 7 and abut against the inner wall of the trailer hook to complete the locking, at this time, because the first disc 8 abuts against the trailer hook, the first disc 8 presses the frame 1 downward, and after the frame 1 is subjected to force, it will be transmitted to the driving wheel 6, increasing the contact pressure between the driving wheel 6 and the ground to prevent slipping;

[0052] Step 2: After the frame 1 is connected to the trailer, the control panel rotates the driving wheel 6, which drives the frame 1 to move, and the frame 1 drives the trailer to move. When turning is required, the control panel turns the steering wheel 4. At this time, since the extrusion block 23 is fixedly locked with the trailer hook, the round pin 7 does not rotate, so the third gear 16 does not rotate. When the frame 1 completes the turn, the frame 1 drives the first gear 14 and the second gear 1401 to rotate around the outer wall of the third gear 16, as shown in FIG. Figure 2 and Figure 4 As shown, when turning left, the first gear 14 and the second gear 1401 will rotate counterclockwise around the third gear 16 (from the perspective of the round pin 7 looking at the frame 1), the first gear 14 drives the round rod 18 on the same side to rotate, the round rod 18 drives the ball 17 to move, the ball 17 first abuts against the slope surface 1301 on the protrusion 13, and is finally squeezed by the protrusion 13, the ball 17 drives the round rod 18 to move downward, the round rod 18 drives the limiting rod 19 to slide downward on the first gear 14, the round rod 18 drives the fixing block 21 to move downward, and stretches the tension spring 20, the fixing block 21 drives the auxiliary wheel 5 to descend through the bearing 22, and the lateral stability and grip of the frame 1 are improved by increasing the amount of tire contact, and the possibility of overturning is reduced. At the same time, the first gear 14 drives the round rod 18 to rotate counterclockwise by a certain angle through the limiting rod 19, the round rod 18 drives the fixing block 21 to rotate, and the fixing block 21 drives the auxiliary wheel 5 to rotate by a certain angle through the bearing 22, so as to further improve the stability;

[0053] When turning left, the second gear 1401 drives the round rod 18 on the same side to rotate, and the round rod 18 drives the ball 17 away from the protrusion 13, so the auxiliary wheel 5 on the same side of the second gear 1401 will not fall, reducing wear; when turning right, the auxiliary wheel 5 on the same side of the second gear 1401 will fall and rotate a certain angle to improve stability. At this time, the auxiliary wheel 5 on the same side of the first gear 14 will not fall;

[0054] As the trailer and the frame 1 complete the turn, the protrusion 13 no longer squeezes the ball 17, the tension spring 20 contracts, driving the round rod 18 to rise, and the round rod 18 drives the auxiliary wheel 5 to rise through the fixing block 21 and the bearing 22 and return to the initial position, so that it remains in the raised state during normal driving to reduce wear;

[0055] Step 3: After the frame 1 tows the trailer to the designated area, the control panel controls the electric telescopic rod 11 to retract, and the electric telescopic rod 11 drives the second disc 10 to descend. At this time, the spring 9 will be extended first, and the second disc 10 drives the extrusion rod 24 to descend, and the extrusion rod 24 no longer squeezes the extrusion block 23. At this time, the extrusion block 23 will flip inward in the round pin 7 under the action of the torsion spring to complete the retraction. As the electric telescopic rod 11 contracts, the spring 9 is fully extended, driving the first disc 8 to descend, and the first disc 8 drives the round pin 7 to descend and stay away from the trailer hook.

[0056] 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 traction assembly of a tractor, comprising a frame (1), characterized in that: Also includes: The locking mechanism is rotatably arranged above the vehicle frame (1), and comprises a round pin (7). The inside of the round pin (7) is hollow, and a cross-shaped slot hole is opened at the top thereof. The outer end of the cross-shaped slot hole extends downward from the side wall of the top of the round pin (7) to open a vertical slot hole. The bottom of the vertical slot hole is rotatably mounted with an extrusion block (23). The lower end surface of the extrusion block (23) abuts against an extrusion rod (24), and the lower end surface of the extrusion rod (24) is mounted with a second disc (10). When the round pin (7) is inserted into the round hole of the trailer, the second disc (10) rises, driving the extrusion rod (24) to extrude the extrusion block (23), and the extrusion block (23) is fixed in the round hole of the trailer. The support mechanism is arranged below the locking mechanism, and comprises a steering assembly, a third disc (12) and a bearing (22); a convex block (13) is fixedly mounted on the lower end surface of the third disc (12); a ball (17) is symmetrically abutted against the lower end surface of the third disc (12); a round rod (18) is rotatably mounted on the lower end surface of the ball (17); a fixing block (21) is mounted on the lower end surface of the round rod (18); an outer ring of the bearing (22) is fixedly mounted on the inner ring of the fixing block (21); an auxiliary wheel (5) is fixedly mounted on the inner ring of the bearing (22); when the third disc (12) drives the convex block (13) to rotate, the ball (17) is squeezed, and the ball (17) drives the auxiliary wheel (5) to descend through the round rod (18), the fixing block (21) and the bearing (22); and at the same time, the steering assembly drives the auxiliary wheel (5) to turn through the round rod (18); A third gear (16) is rotatably mounted on the upper end surface of the vehicle frame (1), a support column (15) is fixedly mounted on the upper end surface of the third gear (16), and the upper end surface of the support column (15) is fixedly connected to the third disc (12); The steering assembly comprises a limit rod (19) symmetrically fixedly mounted on the outer wall of the round rod (18), and a first gear (14) and a second gear (1401) are slidably mounted on the outer walls of the limit rod (19) on both sides, respectively, and the lower end surfaces of the first gear (14) and the second gear (1401) are both rotatably mounted on the frame (1), and the first gear (14) and the second gear (1401) are both meshed with the third gear (16).

2. A traction assembly for a tractor according to claim 1, characterized in that: An electric telescopic rod (11) is fixedly mounted on the upper end surface of the third disc (12), and the upper end surface of the electric telescopic rod (11) is fixedly connected to the second disc (10).

3. The traction assembly of a tractor according to claim 1, characterized in that: A torsion spring is installed at the rotational connection between the round pin (7) and the extrusion block (23).

4. A traction assembly for a tractor according to claim 1, characterized in that: A spring (9) is symmetrically mounted on the upper end surface of the second circular disk (10), a first circular disk (8) is mounted on the side of the spring (9) away from the second circular disk (10), and the upper end surface of the first circular disk (8) is fixedly connected to the round pin (7).

5. The traction assembly of a tractor according to claim 1, characterized in that: The extrusion rod (24) is slidably mounted on the inner wall of the round pin (7).

6. The traction assembly of a tractor according to claim 1, characterized in that: The outer walls on both sides of the protrusion (13) have slope surfaces (1301).

7. The traction assembly of a tractor according to claim 1, characterized in that: The outer wall of the round rod (18) is sleeved with a tension spring (20), the lower end of the tension spring (20) is mounted on a fixing block (21), and the upper end of the tension spring (20) is mounted on the vehicle frame (1).

8. A tractor, characterized in that: A traction assembly of a tractor as claimed in claim 1, further comprising a front baffle (2) fixedly mounted on the outer wall of the frame (1); and also comprising a steering wheel (4) and a driving wheel (6), both of which are symmetrically rotatably mounted on the lower end surface of the frame (1).

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