Elevation difference and elevation angle adjusting system for screed plate of paver
By designing an automatic height difference adjustment system in the expansion and contraction and ironing mechanism of the paver, and automatic adjustment is achieved using the drive mechanism and lifting mechanism, the problem of the inability to manually adjust the height difference during construction is solved, and the construction quality and efficiency are improved.
Patent Information
- Application Number
- CN202421203940.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-29
AI Technical Summary
During the construction of the paver, when the left and right telescopic ironing mechanisms are retracted and overlapped, the height difference cannot be manually adjusted, which affects the construction quality.
A height difference elevation adjustment system is designed without manual adjustment of height difference, and automatic height difference adjustment of the telescopic ironing mechanism is realized by setting a driving mechanism and a lifting mechanism.
It solves the problem that the height difference cannot be adjusted manually during construction, improves the construction quality and efficiency, and avoids mechanical obstacles during height difference adjustment.
Smart Images
Figure CN222631994U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pavers, in particular to a height difference angle adjustment system for a paving machine ironing plate. Background Art
[0002] The core working device of the paver is used to lay the road surface material evenly and flatly according to the required width, thickness and elevation. It is also called the ironing device assembly or the ironing plate assembly. It is divided into mechanical assembly type and hydraulic telescopic type according to the width extension method. The ironing plate described in this patent refers to the hydraulic telescopic ironing plate, referred to as the telescopic ironing plate, which is composed of several ironing devices, generally including the basic section ironing device (or main ironing device), the left telescopic ironing mechanism, the right telescopic ironing mechanism, the widening section ironing device, the telescopic mechanism, the height difference adjustment device, the elevation adjustment device, the material guide device, the ironing plate hydraulic system, etc.
[0003] In recent years, several full-width retractable ironing screeds have appeared on the market, such as Figure 1 As shown, the foundation section ironing device and the left and right telescopic ironing mechanisms are arranged in three layers in a staggered manner in the front and rear direction. When the left and right telescopic ironing mechanisms are fully extended to the maximum width, the total left and right width of the ironing plate reaches 2.5 to 3 times the foundation section width. When paving with a large width (less than 3 times the foundation section width), there is no need to assemble the ironing plate, which greatly reduces the workload of the disassembly and assembly machine and improves the construction efficiency. During the operation of the paver, the height difference and elevation angle of the ironing plate need to be adjusted. The height difference adjustment is to make the paving rear edge of the main section and the telescopic section of the ironing plate on the same horizontal line, so that the paving thickness of the main section and the telescopic section is consistent, and the forming surface effect is consistent. The elevation angle is adjusted to adjust the amount of paving feed.
[0004] The above-mentioned telescopic ironing mechanism also needs to adjust the height difference, but a traditional height difference angle adjustment device is set in the above-mentioned full-width telescopic ironing plate, and manual adjustment is required when adjusting the height difference. If the left and right telescopic ironing mechanisms are retracted and overlapped during construction, and the height difference adjustment device is manual, the height difference adjustment device of the left telescopic ironing mechanism will be blocked by the rear right telescopic ironing mechanism, and the height difference adjustment cannot be performed, affecting the construction quality. Utility Model Content
[0005] The utility model aims at the problems in the prior art and provides a height difference angle adjustment system for a paving machine ironing board which does not require manual height difference adjustment, thereby solving the problem in the prior art that the height difference cannot be adjusted manually when the left and right telescopic ironing mechanisms are retracted and overlap during construction during the winding process.
[0006] The technical solution adopted by the utility model is as follows:
[0007] A height difference angle adjustment system for a paving machine ironing plate includes a telescopic mechanism and a telescopic ironing mechanism. The telescopic mechanism is arranged above the telescopic ironing mechanism to drive the telescopic ironing mechanism to move. An adjustment device is arranged between the telescopic mechanism and the telescopic ironing mechanism. The adjustment device includes an upper support, one end of the upper support is hinged to the telescopic mechanism, the other end of the upper support is hinged to the adjustment mechanism, the adjustment mechanism can be extended and the other end of the adjustment mechanism is hinged to the telescopic mechanism, a driving mechanism is arranged at the lower end of the upper support, the driving mechanism is connected to at least one lifting mechanism, the driving mechanism is used to drive the lifting action of the lifting mechanism, and the lower end of the lifting mechanism is connected to the telescopic ironing mechanism. Through the provided driving mechanism and lifting mechanism, when the telescopic ironing mechanism is lifted and lowered, the lifting action of the lifting mechanism can be completed by controlling the driving mechanism, thereby completing the height difference adjustment of the telescopic ironing mechanism, thereby avoiding the problem in the prior art that the height difference cannot be manually adjusted when the left and right telescopic ironing mechanisms are retracted and overlapped during the winding process.
[0008] Preferably, the adjustment mechanism includes a first screw and a second screw, one end of the first screw is hinged on the upper support, one end of the second screw is hinged on the telescopic mechanism, and the adjustment mechanism also includes an adjustment sleeve, the other end of the first screw is threadedly connected to one end of the adjustment sleeve, and the other end of the second screw is threadedly connected to the other end of the adjustment sleeve, and the two ends of the adjustment sleeve have opposite thread directions. By providing the first screw, the second screw and the adjustment sleeve, when adjusting the elevation angle, only the adjustment sleeve needs to be rotated to achieve the movement of the first screw and the second screw in the axial direction, thereby completing the elevation angle adjustment of the telescopic ironing mechanism.
[0009] Preferably, the adjustment mechanism further includes a first nut and a second nut, the first nut is threadedly connected to the first lead screw and one end of the first nut can abut against the adjustment sleeve, and the second nut is threadedly connected to the second lead screw and one end of the second nut can abut against the adjustment sleeve. By providing the first nut and the second nut, after adjusting the elevation angle of the telescopic ironing mechanism, the first nut and the second nut are rotated to abut against the adjustment sleeve to complete the fixing of the adjustment sleeve, thereby avoiding the risk of the adjustment sleeve rotating under vibration in subsequent work, thereby causing an inaccurate elevation angle.
[0010] Preferably, the driving mechanism includes a hydraulic motor arranged on the upper support, the lifting mechanism includes a lifting guide column, a lifting screw is arranged in the lifting guide column, the hydraulic motor is connected to the lifting screw, the lower end of the lifting screw is threadedly connected to the telescopic ironing mechanism, the lower end of the lifting guide column extends into the guide hole on the telescopic ironing mechanism, and the lifting guide column and the guide hole are slidably matched. Through the provided hydraulic motor, when height difference adjustment is required, the hydraulic motor rotates to drive the lifting screw to rotate, and since the lower end of the lifting screw is threadedly connected to the telescopic ironing mechanism, when the lifting screw rotates, the telescopic ironing mechanism at the lower end is either clamped or away from the lifting screw, so as to achieve height difference adjustment of the telescopic ironing mechanism, and the two guide holes have a limiting and guiding effect on the telescopic ironing structure, and at the same time, they also bear the huge reaction force of the telescopic ironing structure when paving materials during paving construction, so that the lifting screw is not subjected to the force.
[0011] Preferably, the driving mechanism is connected to two lifting mechanisms, and the driving mechanism is connected to the lifting screws of the two lifting mechanisms. By setting up two lifting mechanisms, when the telescopic ironing mechanism is lifted and lowered, there are two stress points on the telescopic ironing mechanism, which avoids excessive tilting of one side of the telescopic ironing mechanism due to gravity at one stress point for a long time, thereby increasing the service life of the equipment.
[0012] Preferably, the driving mechanism further comprises a first sprocket, a second sprocket and a chain, wherein the first sprocket is fixed on the output shaft of the hydraulic motor, two second sprockets are provided and respectively fixed on the upper ends of the two lifting screws, and the chain is meshedly connected with the first sprocket and the two second sprockets. By providing the first sprocket, the second sprocket and the chain, the distance between the first sprocket and the second sprocket can be extended under the action of the chain, thereby avoiding excessive force on one side of the lifting mechanism due to the small distance between the two lifting mechanisms, and at the same time, using one driving mechanism to drive the two lifting mechanisms can ensure the consistency of the movement of the two lifting mechanisms, and avoid the height difference on both sides of the telescopic ironing mechanism when adjusting the height difference.
[0013] Preferably, a bearing is fixedly arranged in the lifting guide column, and the lifting screw is sleeved in the bearing. The bearing is fixed in the lifting guide column through the arrangement, and the axial movement of the lifting screw is fixed and limited, so that there is no axial displacement between the lifting screw and the lifting guide column and the upper support, and the rotational friction between the lifting screw and the lifting guide column can be greatly reduced.
[0014] Preferably, the bearing arranged in the lifting guide column is a thrust ball bearing. By arranging the thrust ball bearing, it can be ensured that the thrust ball bearing has a good supporting force on the lifting screw during the lifting process.
[0015] It can be seen from the above technical solutions that the advantages of the utility model are as follows: by setting the driving mechanism and the lifting mechanism, when the telescopic ironing mechanism is lifted and lowered, the lifting action of the lifting mechanism can be completed by controlling the driving mechanism, thereby completing the height difference adjustment of the telescopic ironing mechanism, thereby avoiding the problem in the prior art that the height difference cannot be manually adjusted when the left and right telescopic ironing mechanisms are retracted and overlapped during the winding process. By setting the first screw, the second screw and the adjustment sleeve, when adjusting the elevation angle, only the adjustment sleeve needs to be rotated to achieve the movement of the first screw and the second screw in the axial direction, thereby completing the elevation angle adjustment of the telescopic ironing mechanism. By setting the first nut and the second nut, after adjusting the elevation angle of the telescopic ironing mechanism, the first nut and the second nut are rotated to abut against the adjustment sleeve to complete the fixing of the adjustment sleeve, thereby avoiding the risk of the adjustment sleeve rotating under vibration in subsequent work, thereby causing inaccurate elevation angle. Through the provision of a hydraulic motor, when height difference adjustment is required, the hydraulic motor rotates to drive the lifting screw to rotate. Since the lower end of the lifting screw is threadedly connected to the telescopic ironing mechanism, when the lifting screw rotates, the telescopic ironing mechanism at the lower end is either clamped or away from the lifting screw, so as to achieve height difference adjustment of the telescopic ironing mechanism. The two guide holes have a limiting and guiding effect on the telescopic ironing structure. At the same time, they also bear the huge reaction force of the telescopic ironing structure when paving materials during paving construction, so that the lifting screw is not subjected to the force. Through the provision of two lifting mechanisms, when the telescopic ironing mechanism is lifted and lowered, there are two stress points on the telescopic ironing mechanism, which avoids excessive tilting of one side of the telescopic ironing mechanism due to gravity at one stress point for a long time, thereby improving the service life of the equipment. By setting the first sprocket, the second sprocket and the chain, the distance between the first sprocket and the second sprocket can be extended under the action of the chain, so as to avoid the excessive force on one side of the lifting mechanism caused by the small distance between the two lifting mechanisms. At the same time, one driving mechanism is used to drive the two lifting mechanisms, which can ensure the consistency of the movement of the two lifting mechanisms and avoid the height difference on both sides of the telescopic ironing mechanism when adjusting the height difference. The bearing is fixed in the lifting guide column to fix and limit the axial movement of the lifting screw, so that there is no axial displacement between the lifting screw and the lifting guide column and the upper support, and the rotational friction between the lifting screw and the lifting guide column can be greatly reduced. The thrust ball bearing is set to ensure that the thrust ball bearing has a good support force on the lifting screw during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1It is a schematic diagram of the extension and retraction of the fully telescopic ironing board in the prior art of the utility model.
[0018] Figure 2 It is a structural schematic diagram of a specific implementation example of the utility model.
[0019] Figure 3 It is a partial structural schematic diagram of a specific implementation example of the utility model.
[0020] Figure 4 It is a structural schematic diagram of an adjusting device according to a specific implementation example of the utility model.
[0021] Figure 5 It is a structural schematic diagram of a lifting mechanism according to a specific implementation example of the utility model.
[0022] Figure 6 It is a structural schematic diagram of the adjustment mechanism of a specific implementation example of the utility model.
[0023] Description of main reference numerals
[0024] In the figure: 1. telescopic mechanism; 2. telescopic ironing mechanism; 3. adjusting device; 4. upper support; 5. adjusting mechanism; 6. driving mechanism; 7. lifting mechanism; 8. first screw; 9. second screw; 10. adjusting sleeve; 11. first nut; 12. second nut; 13. hydraulic motor; 14. lifting guide column; 15. lifting screw; 16. first sprocket; 17. second sprocket; 18. chain; 19. thrust ball bearing. DETAILED DESCRIPTION
[0025] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.
[0026] Example:
[0027] like Figure 2-Figure 6As shown, a height difference angle adjustment system for a paving machine screed plate comprises a telescopic mechanism 1 and a telescopic ironing mechanism 2. The telescopic mechanism 1 is arranged above the telescopic ironing mechanism 2 to drive the telescopic ironing mechanism 2 to move. An adjustment device 3 is arranged between the telescopic mechanism 1 and the telescopic ironing mechanism 2. The adjustment device 3 comprises an upper support 4. One end of the upper support 4 is hinged to the telescopic mechanism 1. The other end of the upper support 4 is hinged to an adjustment mechanism 5. The adjustment mechanism 5 can be telescopic and the other end of the adjustment mechanism 5 is hinged to the telescopic mechanism 1. The lower end of the upper support 4 is provided with a driving mechanism 6. The driving mechanism 6 is connected to at least one lifting mechanism 7. The driving mechanism 6 is used to drive the lifting and lowering action of the lifting mechanism 7. The lower end of the lifting mechanism 7 is connected to the telescopic ironing mechanism 2. The adjusting mechanism 5 includes a first screw rod 8 and a second screw rod 9. One end of the first screw rod 8 is hinged on the upper support 4, and one end of the second screw rod is hinged on the telescopic mechanism 1. The adjusting mechanism 5 also includes an adjusting sleeve 10. The other end of the first screw rod is threadedly connected to one end of the adjusting sleeve 10, and the other end of the second screw rod 9 is threadedly connected to the other end of the adjusting sleeve 10. The threads of the two ends of the adjusting sleeve 10 are in opposite directions. The adjusting mechanism 5 also includes a first nut 11 and a second nut 12. The first nut 11 is threadedly connected to the first screw and one end of the first nut 11 can abut on the adjusting sleeve 10, and the second nut 12 is threadedly connected to the second screw 9 and one end of the second nut 12 can abut on the adjusting sleeve 10. In this way, through the arranged driving mechanism 6 and the lifting mechanism 7, when the telescopic ironing mechanism 2 is lifted and lowered, the lifting action of the lifting mechanism 7 can be completed by controlling the driving mechanism 6 to complete the height difference adjustment of the telescopic ironing mechanism 2, thereby avoiding the problem in the prior art that the height difference cannot be manually adjusted when the left and right telescopic ironing mechanisms 2 are retracted and overlapped during the winding process. To solve the problem, by providing the first lead screw, the second lead screw 9 and the adjusting sleeve 10, when adjusting the elevation angle, it is only necessary to rotate the adjusting sleeve 10 to realize the movement of the first lead screw and the second lead screw 9 in the axial direction, thereby completing the elevation angle adjustment of the telescopic ironing mechanism 2; by providing the first nut 11 and the second nut 12, after adjusting the elevation angle of the telescopic ironing mechanism 2, the first nut 11 and the second nut 12 are rotated to abut against the adjusting sleeve 10 to complete the fixation of the adjusting sleeve 10, thereby avoiding the risk of inaccurate elevation angle caused by the rotation of the adjusting sleeve 10 under vibration in subsequent work.
[0028] In this embodiment, the driving mechanism 6 includes a hydraulic motor 13 arranged on the upper support 4, and the lifting mechanism 7 includes a lifting guide column 14. A lifting screw 15 is arranged in the lifting guide column 14. The hydraulic motor 13 is connected to the lifting screw 15. The lower end of the lifting screw 15 is threadedly connected to the telescopic ironing mechanism 2. The lower end of the lifting guide column 14 extends into the guide hole on the telescopic ironing mechanism 2. The lifting guide column 14 slides with the guide hole. In this way, through the arrangement of the hydraulic motor 13, when height difference adjustment is required, the hydraulic motor 13 rotates to drive the lifting screw 15 to rotate. Since the lower end of the lifting screw 15 is threadedly connected to the telescopic ironing mechanism 2, when the lifting screw 15 rotates, the telescopic ironing mechanism 2 at the lower end is either clamped or away from the lifting screw 15, thereby realizing the height difference adjustment of the telescopic ironing mechanism 2. The two guide holes have a limiting and guiding effect on the telescopic ironing structure 2. At the same time, they also bear the huge reaction force of the telescopic ironing structure 2 when the paving construction is carried out, and the lifting screw 15 is not subjected to this force.
[0029] In this embodiment, the driving mechanism 6 is connected to two lifting mechanisms 7, and the driving mechanism 6 is connected to the lifting screws 15 of the two lifting mechanisms 7. With such an arrangement, through the two lifting mechanisms 7, when the telescopic ironing mechanism 2 is lifted and lowered, there are two force points on the telescopic ironing mechanism 2, thereby avoiding excessive tilting of one side of the telescopic ironing mechanism 2 due to gravity at one force point for a long time, thereby improving the service life of the equipment.
[0030] In this embodiment, the driving mechanism 6 also includes a first sprocket 16, a second sprocket 17 and a chain 18. The first sprocket 16 is fixed on the output shaft of the hydraulic motor 13. Two second sprockets 17 are provided and are respectively fixed on the upper ends of the two lifting screws 15. The chain 18 is meshed and connected with the first sprocket 16 and the two second sprockets 17. In this way, the first sprocket 16, the second sprocket 17 and the chain 18 are arranged, and the distance between the first sprocket 16 and the second sprocket 17 can be extended under the action of the chain 18, thereby avoiding that the distance between the two lifting mechanisms 7 is too small and the lifting mechanism 7 on one side is subjected to excessive force. At the same time, using one driving mechanism 6 to drive the two lifting mechanisms 7 can ensure the consistency of the movement of the two lifting mechanisms 7, and avoid the height difference on both sides of the telescopic ironing mechanism 2 when adjusting the height difference.
[0031] In the present embodiment, a bearing is also fixedly arranged in the lifting guide column 14, and in the present embodiment, the bearing arranged in the lifting guide column 14 is a thrust ball bearing 19, and the lifting screw 15 is sleeved in the bearing. In this arrangement, the bearing is fixed in the lifting guide column 14 through the arranged bearing, and the axial movement of the lifting screw 15 is fixed and restricted, so that there is no axial displacement between the lifting screw 15 and the lifting guide column 14 and the upper support 4, and the rotational friction between the lifting screw 15 and the lifting guide column 14 can be greatly reduced. By setting the thrust ball bearing 19, it can be ensured that the thrust ball bearing 19 has a good supporting force on the lifting screw 15 during the lifting process.
[0032] This solution can be used not only on full-width telescopic screed plates, but also on conventional (symmetrical telescopic) telescopic screed plates.
[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A height difference angle adjustment system for a paving machine screed plate, comprising a telescopic mechanism (1) and a telescopic ironing mechanism (2), wherein the telescopic mechanism (1) is arranged above the telescopic ironing mechanism (2) to drive the telescopic ironing mechanism (2) to move, and characterized in that: An adjusting device (3) is arranged between the telescopic mechanism (1) and the telescopic ironing mechanism (2), the adjusting device (3) comprising an upper support (4), one end of the upper support (4) being hinged to the telescopic mechanism (1), the other end of the upper support (4) being hinged to an adjusting mechanism (5), the adjusting mechanism (5) being capable of telescoping and the other end of the adjusting mechanism (5) being hinged to the telescopic mechanism (1), a driving mechanism (6) being arranged at the lower end of the upper support (4), the driving mechanism (6) being connected to at least one lifting mechanism (7), the driving mechanism (6) being used for driving the lifting action of the lifting mechanism (7), the lower end of the lifting mechanism (7) being connected to the telescopic ironing mechanism (2).
2. The height difference angle adjustment system for a paving machine screed plate according to claim 1, characterized in that: The adjusting mechanism (5) comprises a first screw rod (8) and a second screw rod (9), one end of the first screw rod (8) is hinged on the upper support (4), one end of the second screw rod is hinged on the telescopic mechanism (1), and the adjusting mechanism (5) further comprises an adjusting sleeve (10), the other end of the first screw rod is threadedly connected to one end of the adjusting sleeve (10), the other end of the second screw rod (9) is threadedly connected to the other end of the adjusting sleeve (10), and the two ends of the adjusting sleeve (10) have opposite thread directions.
3. The height difference angle adjustment system for a paving machine screed plate according to claim 2, characterized in that: The adjustment mechanism (5) further comprises a first nut (11) and a second nut (12); the first nut (11) is threadedly connected to the first lead screw and one end of the first nut (11) can abut against the adjustment sleeve (10); the second nut (12) is threadedly connected to the second lead screw (9) and one end of the second nut (12) can abut against the adjustment sleeve (10).
4. The height difference angle adjustment system for a paving machine screed plate according to claim 1, characterized in that: The driving mechanism (6) comprises a hydraulic motor (13) arranged on an upper support (4); the lifting mechanism (7) comprises a lifting guide column (14); a lifting screw (15) is arranged in the lifting guide column (14); the hydraulic motor (13) is connected to the lifting screw (15); the lower end of the lifting screw (15) is threadedly connected to the telescopic ironing mechanism (2); the lower end of the lifting guide column (14) extends into a guide hole on the telescopic ironing mechanism (2); and the lifting guide column (14) is slidably matched with the guide hole.
5. The height difference angle adjustment system for a paving machine screed plate according to claim 4, characterized in that: The driving mechanism (6) is connected to two lifting mechanisms (7), and the driving mechanism (6) is connected to the lifting screw rods (15) of the two lifting mechanisms (7).
6. The height difference angle adjustment system for a paving machine screed plate according to claim 5, characterized in that: The driving mechanism (6) further comprises a first sprocket (16), a second sprocket (17) and a chain (18); the first sprocket (16) is fixed on the output shaft of the hydraulic motor (13); two second sprockets (17) are provided and are respectively fixed on the upper ends of the two lifting screw rods (15); the chain (18) is meshingly connected with the first sprocket (16) and the two second sprockets (17).
7. The height difference angle adjustment system for a paving machine screed plate according to claim 6, characterized in that: A bearing is also fixedly arranged inside the lifting guide column (14), and the lifting screw rod (15) is sleeved inside the bearing.
8. The height difference angle adjustment system for a paving machine screed plate according to claim 7, characterized in that: The bearing arranged in the lifting guide column (14) is a thrust ball bearing (19).