Lifting structure of pavement paving and leveling machine

Abstract

The utility model discloses a lifting structure of a pavement paving and leveling machine, which belongs to the technical field of concrete pavement construction machinery and comprises four supporting leg sleeves arranged at four corners of a leveling loading vehicle respectively and lower supporting legs sleeved with limiting sliding holes in the bottoms of the supporting leg sleeves in a sliding manner. A mounting area is defined by every two adjacent supporting leg sleeves, and lifting parts used for lifting the leveling loading frame are arranged in the two opposite mounting areas. When the leveling loading vehicle encounters an obstacle in the advancing process, the bottom ends of the two oppositely-distributed double-end telescopic cylinders can be controlled to synchronously extend, the installation box and the leveling machine installed in the installation box are integrally lifted by a certain height through the interaction force between the transverse connecting arm and the transverse supporting beam, and in the process of lifting the installation box, the leveling machine is lifted by a certain height. The lifting dislocation difference between the lower supporting leg and the supporting leg sleeve is reduced, and the influence of the lifting dislocation difference on the lifting smoothness of the mounting box is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete pavement construction machinery, in particular to a lifting structure of a pavement paving and leveling machine. Background Art

[0002] During concrete road and bridge construction, there are some smaller construction locations—wet joints and expansion joints. After concrete pouring and vibration, these two locations require paving and leveling. Because the span of wet joints and expansion joints is much smaller than the span of the road surface, using a large-span paving and leveling machine with a large truss structure is extremely inconvenient. Furthermore, when using a conventional small paving and leveling machine, the formwork hanger used for wet joint construction can hinder the machine's movement, so it needs to have a lifting function to avoid obstacles.

[0003] Existing patent application number: 202321708953.4 discloses a new type of paving and leveling machine. This device, through the use of a screw elevator, can synchronously raise the height of the main support, push plate, and leveling assembly when encountering an obstacle, so that it can avoid the obstacle during its movement. In the above-mentioned prior art, during use of this device, the driving sources for the lifting and lowering actions of the four legs are all independently set. During long-term use, relatively large lifting and lowering misalignment differences are prone to occur, causing the main support to twist and deform as a whole, affecting the normal lifting action. Utility Model Content

[0004] The purpose of the present utility model is to provide a lifting structure for a road paving and leveling machine, so as to solve the problem in the above-mentioned background technology that the driving sources of the lifting action of the four legs are independently set, and during long-term use, relatively large lifting misalignment differences are prone to occur, which causes the main bracket to be twisted and deformed as a whole, affecting the normal progress of the lifting action.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The utility model provides a lifting structure of a road paving and leveling machine, comprising four leg sleeves provided at the four corners of a leveling and loading vehicle, and lower legs that slide in limited sliding holes provided at the bottom of the leg sleeves. Two adjacent leg sleeves enclose a mounting area, wherein two lifting parts for raising the height of the leveling and loading vehicle frame are provided in two relative mounting areas. The lifting parts include:

[0007] A transverse connecting arm is provided between the two lower supporting legs, and one end of the transverse connecting arm is slidably sleeved with a guide groove provided on one side of the supporting leg sleeve.

[0008] Two diagonal bracing rods are cross-fixed between the two support leg sleeves.

[0009] A double-head telescopic cylinder is vertically inserted at the intersection of the two diagonal support rods.

[0010] The connecting plates are relatively fixed to the two free ends of the double-head telescopic cylinder.

[0011] A limiting plug block is plugged into the limiting slot provided on the top of the leg cover.

[0012] A connecting plate is fixed on the limiting plug block, and a fixing bolt is threadedly provided between the connecting plate and the supporting leg sleeve.

[0013] A transverse beam is fixed between two opposite connecting plates.

[0014] Furthermore, the transverse connecting arm is located above the transverse supporting beam, and the transverse connecting arm is located between the two guide grooves.

[0015] Furthermore, the diagonal bracing rod is located between the transverse support beam and the transverse connecting arm, and the diagonal bracing rod is fixedly sleeved on the outside of the double-head telescopic cylinder.

[0016] Furthermore, the double-headed telescopic cylinders are relatively distributed on both sides of the leveling loader, and the two ends of the double-headed telescopic cylinders are respectively close to the transverse connecting arm and the transverse supporting beam.

[0017] Furthermore, the connecting plate is located between the double-headed telescopic cylinder and the transverse arm, and the remaining connecting plate is located between the double-headed telescopic cylinder and the transverse support beam.

[0018] Furthermore, the opening direction of one side of the limiting slot is consistent with the opening direction of the guide slot, and the connecting plate is located outside the limiting slot.

[0019] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:

[0020] 1. The utility model uses the coordinated use of relatively distributed double-headed telescopic cylinders, transverse support beams, transverse connecting arms, lower legs, and leg sleeves. When the leveling loader encounters an obstacle while traveling, the bottom ends of the relatively distributed two double-headed telescopic cylinders can be controlled to extend synchronously. Through the interaction between the transverse connecting arms and the transverse support beams, the installation box and the leveling machine installed therein are lifted to a certain height as a whole. In the process of lifting the installation box, the lifting and lowering misalignment difference between the lower legs and the leg sleeves is reduced, thereby reducing the impact of the lifting and lowering misalignment difference on the smoothness of the installation box.

[0021] 2. The utility model uses a limit slot, a limit plug, a cross support beam, a cross arm and a double-headed telescopic cylinder and other structures in conjunction with each other. The top of the double-headed telescopic cylinder can be controlled to rise to a certain height to assist in supporting and calibrating the position of the installation box when installing the installation box, or to push the cross support beam out of the limit slot when disassembling the installation box, so as to improve the separation smoothness of the installation box and the support leg sleeve, and facilitate the lifting of the installation box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an axonometric drawing of the present utility model;

[0023] Figure 2 It is a partial cross-sectional view of the utility model;

[0024] Figure 3 It is a partial axonometric drawing of the present utility model.

[0025] In the figure: 1. Limiting slide hole; 2. Lower support leg; 3. Transverse arm; 4. Guide groove; 5. Double-head telescopic cylinder; 6. Connecting plate; 7. Limiting slot; 8. Limiting plug; 9. Connecting plate; 10. Transverse support beam; 11. Fixing bolt; 12. Diagonal support rod; 13. Support leg sleeve; 14. I-beam; 15. Installation box; 16. Crossbar. DETAILED DESCRIPTION

[0026] In order to enable people skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the present application will be clearly and completely described below in conjunction with the drawings in the embodiment of the present application.

[0027] like Figures 1 to 3 As shown, a lifting structure of a road paving and leveling machine includes four leg sleeves 13 respectively arranged at the four corners of the leveling loader and a lower leg 2 that is slidably fitted with a limiting sliding hole 1 arranged at the bottom of the leg sleeve 13. A wheel is provided at the bottom end of the lower leg 2. A mounting area is formed between two adjacent leg sleeves 13. A lifting part for raising the height of the leveling loader frame is provided in two relative mounting areas. The leveling loader includes an I-frame 14 fixed in the remaining two mounting areas. Two crossbars 16 are relatively fixed between the opposite surfaces of the two I-frames 14. The crossbar 16 is located between the two I-frames. The bottom of the opposite side of the frame 14, and the two I-frames 14 and the crossbar 16 enclose an assembly area, in which an installation box 15 is fixed. One side of the installation box 15 is fixed to the I-frame 14, and the top of the installation box 15 is open. A through slot is provided at the bottom of the installation box. The through slot is located between the two crossbars 16. A paving and leveling machine is installed in the installation box. The output end of the paving and leveling machine extends through the through slot to the bottom of the crossbar 16. This design allows the output end of the paving and leveling machine to contact the concrete filled in the wet joint and smooth the concrete. The lifting part includes:

[0028] A transverse connecting arm 3 is provided between the two lower supporting legs 2 , and one end of the transverse connecting arm 3 is slidably sleeved with a guide groove 4 provided on one side of the supporting leg sleeve 13 .

[0029] Two diagonal braces 12 are cross-fixed between the two leg sleeves 1 .

[0030] A double-headed telescopic cylinder 5 is vertically inserted at the intersection of the two diagonal support rods 12.

[0031] The connecting plates 6 are relatively fixed to the two free ends of the double-headed telescopic cylinder 5.

[0032] A limiting plug block 8 is plugged into a limiting slot 7 provided on the top of the leg cover 1 .

[0033] A connecting plate 9 is fixed on the limiting plug block 8 , and a fixing bolt 11 is threadedly provided between the connecting plate 9 and the supporting leg sleeve 13 .

[0034] A transverse beam 10 is fixed between two opposite connecting plates 9 , and one side of the installation box 15 is fixed on the transverse beam 10 , so as to improve the firmness and stability of the installation box 15 .

[0035] When the leveling loader encounters an obstacle during its movement, the bottom ends of the two relatively distributed double-headed telescopic cylinders 5 can be controlled to extend synchronously. Through the interaction force between the transverse arm 3 and the transverse support beam 10, the installation box 15 and the paving and leveling machine installed therein are lifted as a whole to a certain height. In the process of lifting the installation box 15, the lifting and lowering misalignment difference between the lower support leg 2 and the support leg sleeve 13 is reduced, and the influence of the lifting and lowering misalignment difference on the lifting and lowering smoothness of the installation box 15 is reduced, avoiding the distortion of the I-frame 14 and the crossbar 16 caused by excessive lifting and lowering misalignment difference, which affects the relative sliding between the lower support leg 2 and the support leg sleeve 13, causing the two to get stuck, and hindering the leveling loader from crossing the obstacle without damage.

[0036] In this embodiment, the transverse connecting arm 3 is located above the transverse supporting beam 10 , and the transverse connecting arm 3 is located between the two guide grooves 4 .

[0037] The diagonal bracing rod 12 is located between the transverse support beam 10 and the transverse connecting arm 3 , and the diagonal bracing rod 12 is fixedly sleeved on the outside of the double-head telescopic cylinder 5 .

[0038] Such a design can not only strengthen the connection firmness and support strength between the support leg sleeves 13, but also reduce the number of structures used such as the double-headed telescopic cylinder 5, the transverse arm 3, the diagonal support rod 12, and the transverse support beam 10, save manufacturing costs, and reduce the factors affecting the lifting and dislocation differences, improve the operation accuracy and service life of the two sets of lifting parts, reduce the failure rate during use, improve the stability and reliability of its operation, and save the cost of subsequent maintenance and repair.

[0039] In this embodiment, the double-headed telescopic cylinders 5 are relatively distributed on both sides of the leveling loader, and both ends of the double-headed telescopic cylinders 5 are close to the transverse arm 3 and the transverse support beam 10 respectively.

[0040] The connecting plate 6 is located between the double-headed telescopic cylinder 5 and the transverse arm 3 , and the remaining connecting plate 6 is located between the double-headed telescopic cylinder 5 and the transverse support beam 10 .

[0041] By setting the connecting plate 6, the contact area between the two free ends of the double-headed telescopic cylinder 5 and the transverse arm 3 and the transverse support beam 10 is increased, thereby increasing the support area and improving the stability of the double-headed telescopic cylinder 5 in pushing the transverse support beam 10 or the transverse arm 3. The top end of the double-headed telescopic cylinder 5 can be controlled to rise to a certain height to assist in supporting and calibrating the position of the installation box 15 when installing it, or when the installation box 15 is disassembled, the limit plugs 8 at both ends of the transverse support beam 10 are pushed out from the limit slots 7 to improve the smoothness of the separation of the installation box 15 and the support leg sleeve 13 and facilitate the lifting of the installation box 15.

[0042] In this embodiment, the opening direction of one side of the limit slot 7 is consistent with the opening direction of the guide slot 4, and the connecting plate 9 is located outside the limit slot 7. This design allows the limit plug 8 to be efficiently inserted into the limit slot 7 when the installation box 15 is installed, and the connecting plate 9 is fixed to the support leg sleeve 13 by the fixing bolt 11, so as to realize the fixed installation of the cross beam 10 and the fixation of part of the installation box 15. Combined with the fixed connection between the I-beam 14 and the installation box 15, the fixed installation of the installation box 15 can be completed, and the supporting strength of the installation box 15 can also be increased, so as to facilitate the installation of a larger mass paving and leveling machine inside it and improve the operating stability of the paving and leveling machine.

[0043] The above description is merely a preferred embodiment of the present invention. Any portion not described in the present invention can be implemented by adopting or drawing upon existing technologies. Of course, the above description is not intended to limit the present invention, nor is the present invention limited to the above examples. Any changes, modifications, additions, or substitutions made by those skilled in the art within the spirit and scope of the present invention shall also fall within the scope of protection of the present invention.

Claims

1. A lifting structure for a road paving and leveling machine, comprising four leg sleeves (1) arranged at the four corners of a leveling and loading vehicle and lower legs (3) slidingly fitted with limiting sliding holes (2) arranged at the bottom of the leg sleeves (1), wherein two adjacent leg sleeves (1) are enclosed to form an installation area, wherein two lifting parts (4) for raising the height of the leveling and loading vehicle frame are provided in two relative installation areas, characterized in that: The lifting part (4) comprises: A transverse connecting arm (401) is provided between the two lower supporting legs (3), one end of the transverse connecting arm (401) being slidably sleeved with a guide groove (402) provided on one side of the supporting leg sleeve (1); Two diagonal bracing rods (410) cross-fixed between the two support leg sleeves (1); A double-headed telescopic cylinder (403) vertically inserted at the intersection of the two diagonal support rods (410); A connecting plate (404) relatively fixed to the two free ends of the double-headed telescopic cylinder (403); A limiting plug (406) plugged into a limiting slot (405) provided on the top of the leg cover (1); A connecting plate (407) fixed on the limiting plug block (406), wherein a fixing bolt (409) is threadedly provided between the connecting plate (407) and the supporting leg sleeve (1); A transverse beam (408) is fixed between two opposite connecting plates (407).

2. The lifting structure of the road paving and leveling machine according to claim 1, characterized in that: The transverse connecting arm (401) is located above the transverse supporting beam (408), and the transverse connecting arm (401) is located between the two guide grooves (402).

3. The lifting structure of the road paving and leveling machine according to claim 2, characterized in that: The diagonal bracing rod (410) is located between the transverse support beam (408) and the transverse connecting arm (401), and the diagonal bracing rod (410) is fixedly sleeved on the outside of the double-head telescopic cylinder (403).

4. The lifting structure of the road paving and leveling machine according to claim 3, characterized in that: The double-headed telescopic cylinder (403) is relatively distributed on both sides of the leveling loader, and the two ends of the double-headed telescopic cylinder (403) are respectively close to the transverse connecting arm (401) and the transverse supporting beam (408).

5. The lifting structure of the road paving and leveling machine according to claim 4, characterized in that: The connecting plate (404) is located between the double-headed telescopic cylinder (403) and the transverse connecting arm (401), and the remaining connecting plate (404) is located between the double-headed telescopic cylinder (403) and the transverse supporting beam (408).

6. The lifting structure of the road paving and leveling machine according to claim 5, characterized in that: The opening direction of one side of the limiting slot (405) is consistent with the opening direction of the guide slot (402), and the connecting plate (407) is located outside the limiting slot (405).

Images