Control device for closing angle of hopper of paver

Abstract

The invention relates to the technical field of pavers, in particular to a control device for the closing angle of a hopper of a paver, which is characterized in that an overturning shaft is rotationally arranged on an external rack through a bearing, an overturning motor is fixedly arranged on the external rack, an output shaft of the overturning motor and the overturning shaft are arranged in a transmission manner, and a transmission mechanism is erected between the overturning shaft and the overturning motor; the positioning mechanism is erected below the turnover shaft, and the positioning mechanism is matched with the transmission mechanism; by arranging the clutch transmission structure, the driving structure controls the shaft structure, and the position-adjustable clutch unlocking structure is arranged, so that the positioning can be adjusted according to the rotation angle required by the shaft structure, the shaft structure is disconnected from the driving structure after rotating to the set position, and the shaft structure is locked; therefore, the hopper is mounted on the shaft structure, and the retracting angle of the hopper is adjusted and controlled.

Description

TECHNICAL FIELD

[0001] The present application relates to the paving machine technical field, specifically relates to a kind of control device of paving machine hopper folding angle. BACKGROUND

[0002] The height of mixture in hopper needs to be kept above 1 / 4 of full bucket when paving machine is working, and the carriage is lifted to place once to let mixture surge into paving machine hopper like "flood", and it is not suitable to fold hopper every time, the rotation angle of hopper should not be more than 30° when folding hopper, and the remaining material at the corner of hopper needs to be cleaned by hand in time to avoid segregation caused by coarse aggregate concentration; the current problem is that the hopper needs to be folded after paving machine finishes paving one truck of material, but it should not be completely folded, and complete folding will cause obvious segregation, especially when aggregate is relatively coarse, large material will concentrate into distributor, and the current domestic equipment and imported equipment cannot effectively control this phenomenon, and the driver is also difficult to control the angle when folding hopper based on operation habit, therefore, corresponding hopper folding angle control structure needs to be designed to enable the folding angle of hopper to be controlled. SUMMARY

[0003] The present application aims at the defects and deficiencies of prior art, and provides a kind of control device of paving machine hopper folding angle, which realizes the control of shaft structure by drive structure by setting clutch transmission structure, and sets adjustable position clutch unlocking structure, so as to adjust the positioning according to the rotation angle required by shaft structure, realize the connection between shaft structure and drive structure after shaft structure rotates to set position and lock shaft structure, so as to realize the installation of hopper on shaft structure and realize the adjustment control of folding angle of hopper.

[0004] To achieve the above object, the following technical scheme is adopted in the present application:

[0005] It contains turnover shaft, turnover motor, wherein the turnover shaft is rotatably arranged on the outer frame through bearing, the turnover motor is fixedly arranged on the outer frame, and the output shaft of the turnover motor is drivingly arranged between the turnover shaft, and it further contains:

[0006] Transmission mechanism, the transmission mechanism is arranged between the turnover shaft and the turnover motor;

[0007] Positioning mechanism, the positioning mechanism is arranged below the turnover shaft, and the positioning mechanism is cooperatively arranged with the transmission mechanism.

[0008] Preferably, the transmission mechanism contains:

[0009] Transmission spline shaft, the transmission spline shaft is fixedly arranged on the output shaft of the turnover motor;

[0010] The transmission spline sleeve is movably sleeved on the transmission spline shaft;

[0011] The driving gear plate is fixedly arranged on one end of the transmission spline sleeve facing the turnover shaft;

[0012] The driven gear plate is fixedly arranged on the end of the turnover shaft, and the driving gear plate and the driven gear plate are in meshing arrangement.

[0013] Preferably, the transmission spline shaft is provided with a telescopic guide seat below, the telescopic guide seat is fixedly arranged on the outer frame, the telescopic mounting sleeve is movably sleeved on the transmission spline sleeve through the bearing, the telescopic guide rod is fixedly arranged on the telescopic mounting sleeve, the telescopic guide rod is movably arranged in the telescopic guide sleeve, the support block is fixedly arranged on one end of the telescopic guide rod away from the telescopic mounting sleeve, and the support spring is sleeved on the telescopic guide rod, wherein one end of the support spring abuts against the support block, and the other end of the support spring abuts against the telescopic guide seat.

[0014] Preferably, the turnover shaft is movably sleeved with the limiting guide seat through the bearing, the limiting guide seat is fixedly arranged on the outer frame, the limiting guide rod is movably arranged in the limiting guide seat, the limiting gear plate is fixedly sleeved on the turnover shaft, the limiting clamping jaw is fixedly arranged on the limiting guide rod, and the limiting clamping jaw is arranged on the side of the end face of the limiting gear plate, the limiting spring is sleeved on the limiting guide rod, and the limiting spring is clamped between the limiting guide seat and the limiting clamping jaw, the limiting support seat is fixedly arranged on the telescopic guide sleeve, and the limiting guide rod movably abuts against the limiting support seat.

[0015] Preferably, the positioning mechanism comprises:

[0016] The positioning spline shaft is arranged below the turnover shaft;

[0017] The mounting frame is two and is arranged on both sides of the positioning spline shaft, respectively, and the two ends of the positioning spline shaft are movably sleeved on the mounting frames on both sides through the bearings;

[0018] The mounting seat is two and is arranged on both sides of the turnover shaft, respectively;

[0019] The positioning spline sleeve is movably sleeved on the mounting seat, and the positioning spline sleeve is movably sleeved on the positioning spline shaft through the bearing;

[0020] The driving shaft assembly is arranged on the mounting seat;

[0021] The push rod assembly is arranged between the two mounting seats and cooperates with the driving shaft assembly;

[0022] The locking assembly is arranged below the transmission spline sleeve, and the locking assembly is arranged in cooperation with the shaft assembly.

[0023] Preferably, the shaft assembly comprises:

[0024] The threaded sleeve is arranged on the mounting seat through the bearing, and the threaded sleeve is arranged in transmission connection with the positioning spline sleeve through the spur gear set;

[0025] The threaded rod is arranged in the threaded sleeve through the threaded connection;

[0026] The limiting seat is fixedly arranged on one end of the threaded rod facing the turnover shaft;

[0027] The shaft guide rod is fixedly arranged on the limiting seat and movably arranged in the mounting seat;

[0028] The shaft reset spring is sleeved on the shaft guide rod, and the shaft reset spring is clamped between the mounting seat and the limiting seat.

[0029] Preferably, the push rod assembly comprises:

[0030] The push rod gear is fixedly sleeved on the turnover shaft;

[0031] The push rod rack is arranged below the turnover shaft, and the push rod rack is arranged in parallel with the positioning spline shaft, and the push rod rack is arranged in meshing with the push rod gear;

[0032] The push rod seat is two and is fixedly arranged at two ends of the push rod rack respectively, and the push rod seat is arranged in cooperation with the limiting seat;

[0033] The push rod guide rod is arranged in parallel on the side of the positioning spline shaft, and two ends of the push rod guide rod are fixedly arranged on the mounting frame on both sides respectively, and the mounting seat is movably sleeved on the push rod guide rod;

[0034] The push rod guide seat is fixedly arranged on the push rod rack, and the push rod guide seat is movably sleeved on the push rod guide rod.

[0035] Preferably, the locking assembly comprises:

[0036] The lifting guide seat is arranged below the transmission spline shaft, and the lifting guide seat is fixedly arranged on the external rack;

[0037] The lifting guide rod is movably arranged in the lifting guide seat;

[0038] The lifting support base is fixedly arranged on the lifting guide rod, and the side wall of the lifting support base is movably arranged against the side plate of the lifting guide base;

[0039] The positioning base is fixedly arranged on the support block, and a positioning hole is formed in the positioning base, and the upper end of the lifting guide rod is movably inserted into the positioning hole of the positioning base;

[0040] The lifting reset spring is sleeved on the lifting guide rod, and the upper end of the lifting reset spring is arranged against the lifting support base, and the lower end of the lifting reset spring is arranged against the bottom plate of the lifting guide base;

[0041] The lifting rack is fixedly arranged on the lifting support base;

[0042] The support shaft is arranged between the two mounting frames;

[0043] The lifting gear is fixedly arranged on the support shaft, and the lifting gear is arranged in meshing with the lifting rack;

[0044] The transmission shaft is rotatably arranged on the mounting frame through a bearing, one end of the transmission shaft is arranged in transmission connection with the positioning spline shaft through a bevel gear set, and the other end of the transmission shaft is arranged in transmission with the support shaft.

[0045] Preferably, the mounting frame is rotatably arranged with a reversing shaft through a bearing, the reversing shaft and the transmission shaft are arranged in transmission connection through a bevel gear set, the reversing shaft is coaxially arranged with the support shaft, the reversing shaft is fixedly arranged with a dial, the support shaft is fixedly arranged with a lever, and the crank end of the lever is arranged against the teeth of the dial.

[0046] Compared with the prior art, the present application has the following advantages:

[0047] 1. The present application realizes the transmission between the reversing motor and the reversing shaft through the driving and driven dials, installs the driving dial through the cooperation of the transmission spline shaft and the transmission spline sleeve, realizes the disconnection of the transmission of the driving motor through the separation of the driving dial after the reversing shaft is rotated to a certain angle, realizes the installation of the hopper through the reversing shaft, and realizes the control of the folding angle of the hopper after the hopper is folded to a certain angle.

[0048] 2. The present application converts the rotation angle of the reversing shaft into the travel distance of the push rod rack through the cooperation of the push rod gear and the push rod rack, and sets corresponding dial shaft assemblies and locking assemblies, so as to automatically realize the separation of the driving dial after the reversing shaft is rotated to a certain angle. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1is a structural schematic diagram of the present application.

[0050] Figure 2 is Figure 1 a left rear side view.

[0051] Figure 3 is Figure 1 a lower side view.

[0052] Figure 4 is a structural schematic diagram of the lifting guide seat, positioning seat and support shaft in the present application.

[0053] Figure 5 is a structural schematic diagram of the overturning motor, transmission spline shaft and transmission spline sleeve in the present application.

[0054] Figure 6 is a structural schematic diagram of the transmission spline sleeve, overturning shaft and limit tooth disc in the present application.

[0055] Figure 7 is a structural schematic diagram of the overturning shaft, push rod rack and mounting seat in the present application.

[0056] Figure 8 is a structural schematic diagram of the positioning spline shaft, transmission shaft, reversing shaft and support shaft in the present application.

[0057] Explanation of reference signs:

[0058] overturning shaft 1, overturning motor 2, transmission mechanism 3, transmission spline shaft 3-1, transmission spline sleeve 3-2, driving tooth disc 3-3, driven tooth disc 3-4, positioning mechanism 4, positioning spline shaft 4-1, mounting frame 4-2, mounting seat 4-3, positioning spline sleeve 4-4, shifting shaft assembly 5, threaded sleeve 5-1, threaded rod 5-2, limit seat 5-3, shifting shaft guide rod 5-4, shifting shaft return spring 5-5, push rod assembly 6, push rod gear 6-1, push rod rack 6-2, push rod seat 6-3, push rod guide rod 6-4, push rod guide seat 6-5, locking assembly 7, lifting guide seat 7-1, lifting guide rod 7-2, lifting support seat 7-3, positioning seat 7-4, lifting return spring 7-5, lifting rack 7-6, support shaft 7-7, lifting gear 7-8, transmission shaft 7-9, telescopic guide seat 8, telescopic mounting sleeve 9, telescopic guide rod 10, support block 11, support spring 12, limit guide seat 13, limit guide rod 14, limit tooth disc 15, limit pawl 16, limit spring 17, limit support seat 18, reversing shaft 19, dial 20, shifting lever 21. DETAILED DESCRIPTION

[0059] The technical solutions in the present application will be clearly and completely described below with reference to the drawings. The preferred embodiments described in the description are only examples, and all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0060] As shown in the specific embodiment, the following technical solutions are adopted: Figures 1-8

[0061] The specific embodiment comprises a turnover shaft 1 and a turnover motor 2, wherein the turnover shaft 1 is rotatably arranged on an external frame through a bearing, a hopper is fixedly arranged on the turnover shaft 1, the turnover motor 2 is arranged below the turnover shaft 1, and the turnover motor 2 is fixedly arranged on the frame, a transmission spline shaft 3-1 is fixedly arranged on an output shaft of the turnover motor 2, a transmission spline sleeve 3-2 is movably sleeved on the transmission spline shaft 3-1, a driving gear 3-3 is fixedly arranged on a front end of the transmission spline sleeve 3-2, a driven gear 3-4 is fixedly arranged on a rear end of the turnover shaft 1, and the driven gear 3-4 is arranged in meshing with the driving gear 3-3, a telescopic guide seat 8 is fixedly arranged on the frame and arranged below the transmission spline sleeve 3-2, a telescopic mounting sleeve 9 is sleeved on the transmission spline sleeve 3-2 through a bearing, a telescopic guide rod 10 is fixedly arranged on the telescopic mounting sleeve 9, and the telescopic guide rod 10 is movably arranged in the telescopic guide seat 8, a support block 11 is fixedly arranged on a rear end of the telescopic guide rod 10, a support spring 12 is sleeved on the telescopic guide rod 10, and one end of the support spring 12 abuts against the support block 11, and the other end of the support spring 12 abuts against the telescopic guide seat 8; a limiting guide seat 13 is sleeved on the turnover shaft 1 through a bearing, and the limiting guide seat 13 is fixedly arranged on the external frame, a limiting guide rod 14 is movably arranged in the limiting guide seat 13, a limiting claw 16 is fixedly arranged on the limiting guide rod 14 behind the limiting guide seat 13, a limiting gear 15 is fixedly arranged on the turnover shaft 1, the limiting claw 16 is arranged in cooperation with the limiting gear 15, a limiting support seat 18 is fixedly arranged on the telescopic mounting sleeve 9, a rear end of the limiting guide rod 14 abuts against the limiting support seat 18, a limiting spring 17 is sleeved on the limiting guide rod 14, and a front end of the limiting spring 17 abuts against the limiting guide seat 13, and a rear end of the limiting spring 17 abuts against the limiting claw 16.

[0062] ​The left and right sides of the turnover shaft 1 are symmetrically provided with mounting racks 4-2 fixedly arranged on the outer rack, a push rod guide rod 6-4 is arranged between the mounting racks 4-2, both ends of the push rod guide rod 6-4 are fixedly arranged on the mounting racks 4-2 on both sides, a push rod guide seat 6-5 is movably sleeved on the push rod guide rod 6-4, a push rod rack 6-2 is fixedly arranged on the push rod guide seat 6-5, a push rod gear 6-1 is fixedly arranged on the turnover shaft 1, the push rod gear 6-1 is arranged in meshing with the push rod rack 6-2, a positioning spline shaft 4-1 is arranged in parallel with the push rod guide rod 6-4 on the side thereof, both ends of the positioning spline shaft 4-1 are rotatably arranged on the mounting racks 4-2 on both sides through bearings, positioning spline sleeves 4-4 are symmetrically sleeved on the positioning spline shaft 4-1 on both sides of the push rod rack 6-2, a mounting seat 4-3 is rotatably sleeved on the push rod guide rod 6-4 through a bearing, a threaded sleeve 5-1 is rotatably arranged on the mounting seat 4-3 through a bearing, the threaded sleeve 5-1 and the positioning spline sleeve 4-4 are arranged in transmission connection through a spur gear set, a threaded rod 5-2 is movably arranged in the threaded sleeve 5-1, a limiting seat 5-3 is fixedly arranged on one end of the threaded rod 5-2 facing the push rod rack 6-2, a shaft guide rod 5-4 is fixedly arranged on the limiting seat 5-3, the shaft guide rod 5-4 is movably arranged in the mounting seat 4-3, push rod seats 6-3 are fixedly arranged on both ends of the push rod rack 6-2, the push rod seats 6-3 are arranged in cooperation with the limiting seat 5-3, a shaft reset spring 5-5 is sleeved on the shaft guide rod 5-4, one end of the shaft reset spring 5-5 abuts against the mounting seat 4-3, the other end of the shaft reset spring 5-5 abuts against the limiting seat 5-3;

[0063] The transmission shaft 7-9 is rotatably arranged on the mounting frame 4-2 through a bearing, and is in transmission connection with the positioning spline shaft 4-1 through a bevel gear set. The reversing shaft 19 is rotatably arranged on the mounting frame 4-2 through a bearing, and is in transmission connection with the transmission shaft 7-9 through a bevel gear set. The support shaft 7-7 is arranged between the left and right reversing shafts 19, and is rotatably arranged on the outer frame through a bearing. The dial 20 is fixedly arranged on the reversing shaft 19. The push rod 21 is fixedly arranged on the support shaft 7-7, and is in a crank structure. The push rod 21 is in engagement with the dial 20. The lifting gear 7-8 is fixedly arranged on the support shaft 7-7, and is arranged below the telescopic guide seat 8. The lifting guide seat 7-1 is arranged at the rear side of the lifting gear 7-8, and is fixedly arranged on the outer frame. The lifting guide rod 7-2 is movably arranged on the lifting guide seat 7-1. The positioning seat 7-4 is fixedly arranged on the support block 11, and is provided with a positioning hole. The upper end of the lifting guide rod 7-2 is movably inserted into the positioning hole. The lifting support seat 7-3 is fixedly arranged on the lifting guide rod 7-2, and is movably arranged on the sidewall of the lifting guide seat 7-1. The lifting rack 7-6 is fixedly arranged on the lifting support seat 7-3, and is in engagement with the lifting gear 7-8. The lifting reset spring 7-5 is sleeved on the lifting guide rod 7-2, and the upper end of the lifting reset spring 7-5 is arranged on the lifting support seat 7-3, and the lower end of the lifting reset spring 7-5 is arranged on the lifting guide seat 7-1.

[0064] In use of the device, the hopper is installed on the turnover shaft 1, the transmission spline shaft 3-1 is rotated by the turnover motor 2 to rotate the transmission spline sleeve 3-2, the transmission spline sleeve 3-2 is engaged with the driven gear plate 3-4 through the driving gear plate 3-3, thereby rotating the turnover shaft 1, so that the rotation of the turnover shaft 1 drives the hopper to fold, the rotation of the turnover shaft 1 drives the push rod gear 6-1 to rotate, the push rod gear 6-1 drives the push rod rack 6-2 to slide, the push rod rack 6-2 drives the push rod guide seat 6-5 to slide on the push rod guide rod 6-4, when the push rod rack 6-2 drives the push rod seat 6-3 to abut against the limiting seat 5-3, the limiting seat 5-3 is driven by the push rod seat 6-3 to move, the limiting seat 5-3 slides on the mounting seat 4-3 through the shift shaft guide rod 5-4 and compresses the shift shaft return spring 5-5, the limiting seat 5-3 drives the threaded rod 5-2 to move, thereby the threaded rod 5-2 drives the threaded sleeve 5-1 to rotate, the threaded sleeve 5-1 drives the positioning spline sleeve 4-4 to rotate through the spur gear set and drives the positioning spline shaft 4-1 to rotate, the positioning spline shaft 4-1 is driven by the transmission shaft 7-9 to rotate the reversing shaft 19, the reversing shaft 19 drives the shift lever 20 on it to drive the shift lever 21 on the support shaft 7-7 to rotate, thereby the support shaft 7-7 rotates and drives the lifting gear 7-8 to rotate and drives the lifting rack 7-6 to move downward, the lifting rack 7-6 drives the lifting support seat 7-3 and the lifting guide rod 7-2 to move downward, thereby the lifting guide rod 7-2 is extracted from the positioning seat 7-4, so that the support spring 12 drives the support block 11 to move backward, namely the telescopic guide rod 10 is driven to move backward, the telescopic guide rod 10 drives the transmission spline sleeve 3-2 to move backward through the telescopic mounting sleeve 9, so that the transmission spline sleeve 3-2 drives the driving gear plate 3-3 to disengage from the driven gear plate 3-4, the output shaft of the turnover motor 2 is disconnected from the turnover shaft 1, so that the output shaft of the turnover motor 2 rotates but no longer drives the turnover shaft 1 to rotate, namely the folding of the hopper is stopped, when the telescopic mounting sleeve 9 moves backward, the limiting spring 17 drives the limiting guide rod 14 to move backward and drives the limiting claw 16 to engage with the limiting gear plate 15, the turnover shaft 1 is locked; when the folded hopper is unfolded, namely the transmission between the turnover motor 2 and the turnover shaft 1 is needed, the output shaft of the turnover motor 2 is controlled to rotate reversely, the support block 11 is manually pushed to move forward, thereby the support block 11 drives the telescopic guide rod 10 and drives the transmission spline sleeve 3-2 to move forward through the telescopic mounting sleeve 9, so that the driving gear plate 3-3 is engaged with the driven gear plate 3-4, when the telescopic mounting sleeve 9 moves forward, the limiting guide rod 14 is driven by the limiting support seat 18 to move forward, so that the limiting claw 16 disengages from the limiting gear plate 15 and the limiting support spring 12 is compressed, thereby the transmission between the turnover motor 2 and the turnover shaft 1 is restored, so that the folded hopper is unfolded by the turnover motor 2.When the folding angle of the hopper is adjusted, the rotation angle of the turning shaft 1 is adjusted, and the moving distance of the push rod rack 6-2 is adjusted, and the sliding mounting seat 4-3 is adjusted to adjust the position of the mounting seat 4-3, and the moving distance of the push rod rack 6-2 is adjusted. When the device completes the positioning of the folding rotation angle of the turning shaft 1, and the driving gear plate 3-3 is disengaged from the driven gear plate 3-4, the turning shaft 1 is driven by the hopper to reverse and reset a small angle, and the limit claw 16 is engaged with the limit gear plate 15. In this process, the push rod 5-2 is reset by the push rod reset spring 5-5, that is, the positioning spline shaft 4-1, the transmission shaft 7-9 and the reversing shaft 19 are reset, and at this time, the lifting guide rod 7-2 is extracted and does not abut against the lower surface of the positioning seat 7-4. At this time, the reversing shaft 19 is reset and rotates to drive the dial 20 to reset, and the dial 21 remains stationary and is placed between the teeth of the dial 20. After the support block 11 is pushed forward, the lifting guide rod 7-2 is aligned with the positioning hole on the positioning seat 7-4, and the lifting support seat 7-3 is pushed upward by the lifting reset spring 7-5, so as to push the lifting guide rod 7-2 upward and insert it into the positioning hole on the positioning seat 7-4, thereby locking the positioning seat 7-4 and the support block 11, and locking the engagement state between the driving gear plate 3-3 and the driven gear plate 3-4.

[0065] Compared with the prior art, the beneficial effects of the present application are:

[0066] 1. The device converts the rotation angle control of the turning shaft 1 into the moving distance control of the push rod rack 6-2, and realizes the transmission drive between the turning motor 2 and the turning shaft 1 through the engagement transmission of the driving gear plate 3-3 and the driven gear plate 3-4, so as to move the push rod rack 6-2 to the set position and control the unlocking between the driving gear plate 3-3 and the driven gear plate 3-4, realize the transmission between the turning motor 2 and the turning shaft 1, realize the rotation angle control of the turning shaft 1, and realize the folding angle control of the hopper;

[0067] 2. The device realizes the positioning and braking of the turning shaft 1 under the condition that the driving gear plate 3-3 is disengaged from the driven gear plate 3-4 under the set angle, and the turning motor 2 remains in the continuous working state, so as to realize the adjustment of the folding rotation angle of the turning shaft 1 and the hopper installed on the turning shaft 1;

[0068] 3、The device realizes the clutch control between the driving gear plate 3-3 and the driven gear plate 3-4 through the transmission spline sleeve 3-2 of the soil hole, realizes the locking of the driving gear plate 3-3 and the driven gear plate 3-4 in the meshing state through the locking of the positioning seat 7-4 by the lifting guide rod 7-2, and realizes the unlocking between the driving gear plate 3-3 and the driven gear plate 3-4 by rotating the threaded sleeve 5-1 through the threaded rod 5-2 when the push rod rack 6-2 reaches the set position, and through the transmission of the transmission shaft 7-9, the support shaft 7-7 and the like, realizes the extraction of the lifting guide rod 7-2 from the positioning seat 7-4, and realizes the movement of the support block 11 by the support spring 12, and realizes the unlocking between the driving gear plate 3-3 and the driven gear plate 3-4.

[0069] For those skilled in the art, the technical solutions described in the foregoing embodiments can be modified, and equivalent replacement of part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A device for controlling the folding angle of a hopper of a paver, comprising a tilting shaft (1) and a tilting motor (2), wherein the tilting shaft (1) is rotatably mounted on an external frame via a bearing, the tilting motor (2) is fixedly mounted on the external frame, and a transmission is arranged between an output shaft of the tilting motor (2) and the tilting shaft (1); characterized in that: It also contains: A transmission mechanism (3), wherein the transmission mechanism (3) is mounted between the flip shaft (1) and the flip motor (2); The positioning mechanism (4) is mounted below the flip shaft (1), and the positioning mechanism (4) is coordinated with the transmission mechanism (3).

2. The device for controlling the folding angle of a paver hopper according to claim 1, characterized in that: The transmission mechanism (3) comprises: A transmission spline shaft (3-1), wherein the transmission spline shaft (3-1) is fixedly arranged on the output shaft of the flip motor (2); A transmission spline sleeve (3-2), wherein the transmission spline sleeve (3-2) is movably sleeved on the transmission spline shaft (3-1); A driving toothed disc (3-3), wherein the driving toothed disc (3-3) is fixedly arranged on one end of the transmission spline sleeve (3-2) facing the turning shaft (1); The driven tooth disc (3-4) is fixedly arranged on the end of the turning shaft (1), and the driving tooth disc (3-3) is meshed with the driven tooth disc (3-4).

3. The device for controlling the folding angle of a paver hopper according to claim 2, characterized in that: A telescopic guide seat (8) is provided below the transmission spline shaft (3-1), and the telescopic guide seat (8) is fixedly provided on the external frame. A telescopic mounting sleeve (9) is provided on the transmission spline sleeve (3-2) through a bearing rotation sleeve. A telescopic guide rod (10) is fixedly provided on the telescopic mounting sleeve (9), and the telescopic guide rod (10) is movably inserted into the telescopic guide sleeve. A support block (11) is fixedly provided on one end of the telescopic guide rod (10) away from the telescopic mounting sleeve (9). A support spring (12) is sleeved on the telescopic guide rod (10), wherein one end of the support spring (12) is abutted against the support block (11), and the other end of the support spring (12) is abutted against the telescopic guide seat (8).

4. The device for controlling the folding angle of a paver hopper according to claim 1, characterized in that: The tilting shaft (1) is provided with a limit guide seat (13) through a bearing rotation sleeve, and the limit guide seat (13) is fixedly arranged on the external frame, and a limit guide rod (14) is movably inserted in the limit guide seat (13), a fixed limit toothed disc (15) is sleeved on the tilting shaft (1), a limit claw (16) is fixedly arranged on the limit guide rod (14), and the limit claw (16) is mounted on the side of the end surface of the limit toothed disc (15), a limit spring (17) is sleeved on the limit guide rod (14), and the limit spring (17) is clamped between the limit guide seat (13) and the limit claw (16), a limit support seat (18) is fixedly arranged on the telescopic guide sleeve, and the limit guide rod (14) is movably supported on the limit support seat (18).

5. The device for controlling the folding angle of a paver hopper according to claim 1, characterized in that: The positioning mechanism (4) comprises: A positioning spline shaft (4-1), wherein the positioning spline shaft (4-1) is mounted below the turning shaft (1); There are two mounting frames (4-2), which are respectively mounted on both sides of the positioning spline shaft (4-1), and both ends of the positioning spline shaft (4-1) are respectively rotated on the mounting frames (4-2) on both sides through bearings; Mounting seats (4-3), there are two mounting seats (4-3) and they are respectively arranged on both sides of the flip shaft (1); A positioning spline sleeve (4-4), wherein the positioning spline sleeve (4-4) is rotatably mounted on the mounting seat (4-3) via a bearing, and the positioning spline sleeve (4-4) is movably sleeved on the positioning spline shaft (4-1); A shifting shaft assembly (5), wherein the shifting shaft assembly (5) is arranged on a mounting seat (4-3); A push rod assembly (6), wherein the push rod assembly (6) is mounted between the two mounting seats (4-3) and is arranged in cooperation with the shift shaft assembly (5); A locking assembly (7) is provided below the transmission spline sleeve (3-2), and the locking assembly (7) is provided in cooperation with the shifting shaft assembly (5).

6. The device for controlling the folding angle of a paver hopper according to claim 5, characterized in that: The shifting shaft assembly (5) comprises: A threaded sleeve (5-1), wherein the threaded sleeve (5-1) is screwed onto the mounting seat (4-3) via a bearing, and the threaded sleeve (5-1) and the positioning spline sleeve (4-4) are connected via a spur gear set. A threaded rod (5-2), wherein the threaded rod (5-2) is inserted into the threaded sleeve (5-1) through a threaded connection; A limiting seat (5-3), wherein the limiting seat (5-3) is fixedly arranged on one end of the threaded rod (5-2) facing the turning shaft (1); A shifting shaft guide rod (5-4), wherein the shifting shaft guide rod (5-4) is fixedly arranged on the limiting seat (5-3), and the shifting shaft guide rod (5-4) is movably inserted into the mounting seat (4-3); The shift shaft reset spring (5-5) is sleeved on the shift shaft guide rod (5-4), and the shift shaft reset spring (5-5) is clamped between the mounting seat (4-3) and the limiting seat (5-3).

7. The device for controlling the folding angle of a paver hopper according to claim 5, characterized in that: The push rod assembly (6) comprises: A push rod gear (6-1), wherein the push rod gear (6-1) is sleeved and fixed on the turning shaft (1); A push rod rack (6-2), wherein the push rod rack (6-2) is mounted below the tilting shaft (1), and the push rod rack (6-2) is arranged parallel to the positioning spline shaft (4-1), and the push rod rack (6-2) is meshed with the push rod gear (6-1); There are two push rod seats (6-3), which are respectively fixedly arranged at the two ends of the push rod rack (6-2). The push rod seats (6-3) are arranged in coordination with the limit seat (5-3); A push rod guide rod (6-4), wherein the push rod guide rod (6-4) is arranged parallel to the side of the positioning spline shaft (4-1), and both ends of the push rod guide rod (6-4) are respectively fixed on the mounting frames (4-2) on both sides, and the mounting seat (4-3) is movably sleeved on the push rod guide rod (6-4); The push rod guide seat (6-5) is fixedly arranged on the push rod rack (6-2), and the push rod guide seat (6-5) is movably sleeved on the push rod guide rod (6-4).

8. The device for controlling the folding angle of a paver hopper according to claim 5, characterized in that: The locking assembly (7) comprises: A lifting guide seat (7-1), wherein the lifting guide seat (7-1) is mounted below the transmission spline shaft (3-1), and the lifting guide seat (7-1) is fixedly arranged on an external frame; A lifting guide rod (7-2), wherein the lifting guide rod (7-2) is movably inserted into the lifting guide seat (7-1); A lifting support seat (7-3), wherein the lifting support seat (7-3) is fixedly arranged on the lifting guide rod (7-2), and the side wall of the lifting support seat (7-3) is movably abutted against the side plate of the lifting guide seat (7-1); A positioning seat (7-4), wherein the positioning seat (7-4) is fixedly arranged on the support block (11), and a positioning hole is provided on the positioning seat (7-4), and the upper end of the lifting guide rod (7-2) is movably inserted into the positioning hole on the positioning seat (7-4); A lifting reset spring (7-5), wherein the lifting reset spring (7-5) is sleeved on the lifting guide rod (7-2), and the upper end of the lifting reset spring (7-5) is abutted against the lifting support seat (7-3), and the lower end of the lifting reset spring (7-5) is abutted against the bottom plate of the lifting guide seat (7-1); A lifting rack (7-6), wherein the lifting rack (7-6) is fixedly arranged on the lifting support seat (7-3); A support shaft (7-7), wherein the support shaft (7-7) is mounted between the mounting frames (4-2) on both sides; A lifting gear (7-8), wherein the lifting gear (7-8) is fixedly arranged on the support shaft (7-7), and the lifting gear (7-8) is meshed with the lifting rack (7-6); A transmission shaft (7-9) is rotatably mounted on a mounting frame (4-2) via a bearing. One end of the transmission shaft (7-9) is connected to a positioning spline shaft (4-1) via a bevel gear set, and the other end of the transmission shaft (7-9) is connected to a support shaft (7-7).

9. The device for controlling the folding angle of a paver hopper according to claim 8, characterized in that: A reversing shaft (19) is rotatably mounted on the mounting frame (4-2) via a bearing. The reversing shaft (19) and the transmission shaft (7-9) are connected via a bevel gear set. The reversing shaft (19) and the support shaft (7-7) are coaxially mounted. A dial (20) is fixedly mounted on the reversing shaft (19). A shift lever (21) is fixedly mounted on the support shaft (7-7). The crank end of the shift lever (21) abuts against the teeth of the dial (20).

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