Multi-stage lifting mechanism and paver

Abstract

The present invention belongs to a mobile mechanism equipped with heavy equipment, and specifically relates to a multi-stage lifting mechanism, including a lifting mechanism capable of translating in the vertical direction, the lifting mechanism including a fixed lifting bracket, a lifting cylinder, a primary lifting unit and a secondary lifting unit, one end of the lifting cylinder is installed on the lifting bracket, and the other end is installed on the secondary lifting unit, and the primary lifting unit and the secondary lifting unit can both extend or retract relative to the lifting bracket. The above-mentioned multi-stage lifting mechanism is used on a paver, which can complete the paving and forming of various shoulders, and has strong versatility.

Description

Technical Field

[0001] The invention belongs to a mobile mechanism equipped with heavy equipment, and in particular relates to a mobile mechanism capable of multi-stage lifting and multi-stage telescoping and a paving machine using the mechanism. Background Art

[0002] In building and highway construction, many molds or accessories are needed. By adjusting their height or position, components of different specifications can be formed. However, there are many types of quality, size, and function of accessories or molds. Currently, one device can only adapt to one or two types. How to improve the versatility and multi-function of mobile mechanisms is a technical problem that needs to be solved urgently. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a multi-stage lifting mechanism, which can be assembled with a variety of accessories or molds, has multiple functions and strong versatility. When used on a paver, it can complete the paving and forming of a variety of shoulders.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A multi-stage lifting mechanism includes a lifting mechanism capable of vertical translation, the lifting mechanism includes a fixed lifting bracket, a lifting cylinder, a primary lifting unit and a secondary lifting unit, one end of the lifting cylinder is installed on the lifting bracket, and the other end is installed on the secondary lifting unit, and the primary lifting unit and the secondary lifting unit can both be extended or retracted relative to the lifting bracket.

[0006] The above-mentioned multi-stage lifting mechanism, wherein at least one suction cup seat is installed on the lifting mechanism; when there are more than one suction cup seats, the suction cup seats are arranged up and down on the lifting mechanism;

[0007] In the above-mentioned multi-stage lifting mechanism, any one of the suction cup seats is detachably connected to a suction cup mechanism, the suction cup mechanism includes a suction cup bracket and several permanent magnets installed on the suction cup bracket, the suction cup bracket is connected to the suction cup seat, and the magnet can be magnetically connected to or separated from the sliding mold.

[0008] The above-mentioned multi-stage lifting mechanism, the suction cup bracket is provided with a positioning block for adjusting the horizontality of the suction cup bracket, and the suction cup seat is correspondingly provided with a fastening bolt for clamping the positioning block; the suction cup bracket is mounted on the suction cup seat and then tightened with a flange, and the flange is screwed to the suction cup seat.

[0009] The above-mentioned multi-stage lifting mechanism is characterized in that: the lifting mechanism is a sliding rod lifting mechanism, the lifting bracket is a sliding rod bracket, the first-level lifting unit is a first-level sliding rod lifting bracket, the second-level lifting unit is a second-level sliding rod lifting bracket, the lifting bracket, the first-level lifting unit and the second-level lifting unit are telescopically coordinated with sliding rods and sleeves, and limiting elements are provided between the lifting bracket and the first-level lifting unit and between the first-level lifting unit and the second-level lifting unit.

[0010] The above-mentioned multi-stage lifting mechanism, the secondary lifting unit is provided with a pair of oppositely arranged locking hooks, each of the locking hooks is provided with an adjusting bolt, the tail end of the adjusting bolt passes through the locking hook and can be away from or against the secondary lifting unit; the lower end of the locking hook can be detached from or hooked on the primary lifting unit, and a tension spring is connected between the upper ends of the two locking hooks.

[0011] The above-mentioned multi-stage lifting mechanism, the lifting mechanism is a gantry lifting mechanism, the lifting bracket is a gantry bracket, the first-level lifting unit is a first-level lifting gantry, and the second-level lifting unit is a second-level lifting gantry;

[0012] The outer side of the first-stage lifting gantry is slidably matched with the door-shaped bracket, and the inner side is slidably matched with the second-stage lifting gantry;

[0013] At least one U-shaped plate is welded to the door-type bracket, the first-level lifting door frame and the second-level lifting door frame respectively.

[0014] The above-mentioned multi-stage lifting mechanism, the suction cup mechanism has a sliding mold magnetically attracted thereon, and the sliding mold is any one of an anti-collision shoulder mold, a curbstone shoulder mold or an earth shoulder mold.

[0015] A paving machine equipped with the multi-stage lifting mechanism comprises a push-roller chassis and a driving main machine, wherein the multi-stage lifting mechanism is assembled on the push-roller chassis and / or the driving main machine.

[0016] Beneficial effects of the present invention: The lifting mechanism is a two-stage lifting mechanism, which is suitable for the construction of various shoulder height requirements. At the same time, the lifting mechanism can also be widely used in equipment such as forklifts, and has a wide range of applications. The lifting mechanism is integrated with a suction cup to connect the sliding mold, further improving the versatility of the device. The user only needs to replace different types of sliding molds according to construction requirements, so that one device can be used for multiple purposes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a sliding rod lifting mechanism in a raised state according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of a sliding rod lifting mechanism according to an embodiment of the present invention;

[0019] Figure 3This is a schematic diagram of a sliding rod bracket according to Embodiment 1 of the present invention;

[0020] Figure 4 This is a schematic diagram of a first-stage sliding rod lifting frame according to a first embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of a two-stage sliding rod lifting frame according to a first embodiment of the present invention;

[0022] Figure 6 This is an exploded view of the two-stage sliding rod lifting frame of the first embodiment of the present invention;

[0023] Figure 7 It is a side view of the slide bar lifting mechanism of the first embodiment of the present invention;

[0024] Figure 8 for Figure 7 Middle A-axis section view;

[0025] Fig. 9 for Figure 8 A local enlarged schematic diagram in FIG.

[0026] Fig.10 for Figure 7 Middle B section view;

[0027] Fig.11 for Fig.10 A local enlarged schematic diagram in FIG.

[0028] Fig.12 This is a schematic diagram of the usage status of the first embodiment of the present invention assembled with a paver.

[0029] Fig.13 This is a schematic diagram of a door-type lifting mechanism according to a second embodiment of the present invention;

[0030] Fig.14 This is a schematic diagram of the lifting of the door-type lifting mechanism according to the second embodiment of the present invention;

[0031] Fig.15 This is a schematic diagram of a door-type bracket according to a second embodiment of the present invention;

[0032] Fig.16 This is a schematic diagram of a first-stage lifting gantry according to a second embodiment of the present invention;

[0033] Fig.17 This is a schematic diagram of a two-stage lifting gantry according to a second embodiment of the present invention;

[0034] Fig.18 This is a schematic diagram of the use status of the second embodiment of the present invention assembled with the front chassis of a paver.

[0035] Fig.19 Schematic diagram of a suction cup according to an embodiment of the present invention.

[0036] Fig. 20 This is a schematic diagram of the structure of the third embodiment of the present invention.

[0037] In the figure: 1 is a push-roller chassis, 2 is a driving mainframe, 3 is a counterweight block, 4 is a collision-proof shoulder sliding mold, 41 is a collision-proof shoulder feed port, and 42 is a collision-proof shoulder forming cavity.

[0038] 5 is a slide bar lifting mechanism, 51 is a slide bar bracket, 511 is a vertical plate, 512 is a cylinder support plate, 513 is a primary sliding sleeve, 514 is a secondary auxiliary sliding sleeve, 52 is a primary slide bar lifting frame, 522 is a primary support, 523 is a primary slide bar, 524 is a secondary sliding sleeve, 53 is a secondary slide bar lifting frame, 532 is a secondary support, 533 is a locking hook, 534 is a secondary slide bar, 535 is a tension spring, 536 is an adjusting bolt, 54 is a baffle, and 55 is a limiting sleeve.

[0039] 6 is a telescopic mechanism, 61 is a telescopic seat, 62 is a telescopic frame, 63 is a telescopic cylinder, and 65 is a folding cylinder.

[0040] 7 is a suction cup mechanism, 71 is a suction cup bracket, 711 is a positioning block, 72 is a magnet, 73 is a suction cup seat I, 74 is a suction cup seat II, 75 is a fastening bolt, and 76 is a flange.

[0041] 8 is a curbstone shoulder mold, 81 is a curbstone mold feed port, and 82 is a curbstone shoulder forming cavity.

[0042] 9 is a gantry lifting mechanism, 91 is a gantry bracket, 911 is an ear plate, 92 is a primary lifting gantry, 93 is a secondary lifting gantry, and 94 is a U-shaped plate.

[0043] 10 is a vibrating rod, 20 is a composite bearing, and 50 is a lifting cylinder. DETAILED DESCRIPTION

[0044] The present invention is further explained below in conjunction with the accompanying drawings.

[0045] A multi-stage lifting mechanism includes a lifting mechanism that can move in a vertical direction, the lifting mechanism includes a lifting bracket, a primary lifting unit and a secondary lifting unit, one end of the lifting cylinder 50 is mounted on the lifting bracket, and the other end is mounted on the secondary lifting unit, the primary lifting unit and the secondary lifting unit can be extended or retracted relative to the lifting bracket, respectively. It is suitable for shoulder forming with different height requirements and has a wide range of applications.

[0046] At least one suction cup seat is installed on the lifting mechanism; when there are more than one suction cup seats, the suction cup seats are arranged up and down on the lifting mechanism. A suction cup mechanism 7 is detachably connected to any one of the suction cup seats, and the suction cup mechanism 7 includes a suction cup bracket 71 and several permanent magnets 72 installed on the suction cup bracket 71. The suction cup bracket 71 is connected to the suction cup seat, and the magnet 72 can be magnetically connected or separated from the slipform mold. The suction cup mechanism 7 is installed on a suction cup seat of a suitable height according to the forming height of the shoulder, further increasing the height range of the slipform mold. If the shoulder formed by the anti-collision shoulder mold 4 is high, that is, the anti-collision shoulder mold 4 is higher, then the upper suction cup seat is used. If the curbstone shoulder mold 8 is relatively short, then the lower suction cup seat is used.

[0047] The suction cup bracket 71 is provided with a positioning block 711 for adjusting the horizontality of the suction cup bracket 71, and the suction cup seat is correspondingly provided with a fastening bolt 75 for clamping the positioning block 711; the suction cup bracket 71 is mounted on the suction cup seat and then pressed with a flange 76, and the flange 76 is screwed to the suction cup seat. The various plate surfaces of the slipform mold are mostly welded, and the stress change after welding greatly reduces the position accuracy between the external magnetic connection surface of the slipform mold and the shoulder forming surface inside it.

[0048] In order to ensure the accuracy of the shoulder forming surface, the magnetic surface of the magnet 72 is set to be adjustable in horizontality, that is, after adjusting the plane of the suction cup mechanism 7 to a suitable position as needed, the positioning block 711 is clamped with the fastening bolt 75 to position the suction cup mechanism 7, and then the flange 76 is screwed on the suction cup seat to fix the suction cup mechanism 7. Such a design greatly improves the accuracy of shoulder forming.

[0049] The lifting mechanism is connected with a telescopic mechanism 6 that can drive it to move horizontally. The telescopic mechanism 6 is arranged horizontally. The telescopic mechanism 6 includes a fixed telescopic seat 61, a folding cylinder 65, a telescopic frame 62 that slides with the telescopic seat 61, and a telescopic cylinder 63 for driving the telescopic frame 62 to slide left and right. The two ends of the telescopic cylinder 63 are respectively connected to the telescopic seat 61 and the telescopic frame 62; the telescopic frame 62 is connected to the lifting mechanism. The lifting mechanism can move horizontally and can be adjusted according to the construction conditions of the road surface or the slipform mold, which is very convenient. The lifting mechanism is hinged on its corresponding telescopic frame 62, and one end of the folding cylinder 65 is hinged on the telescopic frame 62, and the other end is hinged on the lifting mechanism.

[0050] Embodiment 1

[0051] In this embodiment, the lifting mechanism is a sliding bar lifting mechanism 5, the lifting bracket is a sliding bar bracket 51, the primary lifting unit is a primary sliding bar lifting bracket 52, and the secondary lifting unit is a secondary sliding bar lifting bracket 53;

[0052] The slide rod bracket 51 includes a vertical plate 511, a horizontal cylinder support plate 512 for mounting the lifting cylinder 50, and a plurality of primary sliding sleeves 513; one end of each primary sliding sleeve 513 is fixed on the vertical plate 511, and the other end is fixed on the cylinder support plate 512;

[0053] The first-level sliding rod lifting frame 52 includes a first-level support 522, a plurality of first-level sliding rods 523 and a plurality of second-level sliding sleeves 524. The upper ends of the first-level sliding rods 523 are fixed on the first-level support 522, and the lower ends are slidably inserted in the first-level sliding sleeves 513 in a one-to-one correspondence.

[0054] The secondary slide bar lifting frame 53 includes a secondary support 532 and a plurality of secondary slide bars 534. The upper ends of the secondary slide bars 534 are fixed to the secondary support 532, and the lower ends of the secondary slide bars 534 are slidably inserted in the secondary sliding sleeves 524 in a one-to-one correspondence. A suction cup seat Ⅰ73 is installed on the secondary sliding sleeve 524. A suction cup seat Ⅰ73 is also installed on the secondary support 532.

[0055] The first-level sliding sleeve 513 and the second-level sliding sleeve 524 are both provided with a limit sleeve 55; the lower ends of the first-level sliding rod 523 and the second-level sliding rod 534 are both provided with a baffle 54, and the diameter of the baffle 54 is larger than the inner diameter of the corresponding limit sleeve 55 to limit the extension length of the sliding rod. The first-level sliding rod 523 extends upward until the baffle 54 at its lower end is blocked by the limit sleeve 55, and the first-level sliding rod 523 cannot continue to extend, that is, the extension action of the first-level sliding rod lifting frame 52 stops. At this time, if the lifting cylinder 50 continues to extend, the second-level sliding rod 534 will extend upward until the baffle 54 at the lower end of the second-level sliding rod 534 is blocked by the limit sleeve 55, and the extension action of the second-level sliding rod lifting frame 53 stops, and the sliding rod lifting mechanism 5 extends to the maximum length. Since the sliding rod lifting mechanism 5 has a large load but each sliding rod and sliding sleeve are slender parts, the limit sleeve 55 and the baffle 54 are provided to realize mechanical limit in the lifting process, thereby improving the lifting stability and service life of the sliding rod lifting mechanism 5.

[0056] The two opposite sides of the secondary support 532 are respectively hinged with locking hooks 533, and the locking hooks 533 are provided with adjusting bolts 536. The tail end of the adjusting bolt 536 passes through the locking hooks 533 and can be away from or against the secondary support 532; the lower end of the locking hook 533 can be separated from or hooked on the primary support 522, and a tension spring 535 is connected between the upper ends of the two locking hooks 533. The tension spring 535 is always in a stretched state. Figure 1 As shown in the figure, the anti-collision shoulder mold 4 is assembled, and the suction cup mechanism 7 is installed on the upper suction cup seat I 73. The adjusting bolt 536 is screwed out to be away from the secondary support 532. At this time, the lock hook 533 is tightened by the tension spring 535 so that the lower end of the lock hook 533 is separated from the primary support 522, so that the primary slide bar lifting frame 52 and the secondary slide bar lifting frame 53 can both be extended.

[0057] refer to Figure 1 The sliding mold in this embodiment is an anti-collision shoulder mold 4, and a plurality of vibrating rods 10 are arranged on two opposite sides of the anti-collision mold feed port 41. Fig.12 The paver has a multi-stage lifting mechanism arranged on one side of the driving main machine 2, a push-roller chassis 1 is used to push the tank truck in front to feed the anti-collision shoulder mold 4, and a counterweight block 3 is arranged on the other side of the driving main machine 2 to balance the mass of the anti-collision shoulder mold 4.

[0058] Embodiment 2

[0059] In this embodiment, the lifting mechanism is a gantry lifting mechanism 9, the lifting bracket is a gantry bracket 91, the primary lifting unit is a primary lifting gantry 92, and the secondary lifting unit is a secondary lifting gantry 93;

[0060] The two sides of the door-shaped bracket 91 are respectively provided with ear plates 911;

[0061] The outer side of the primary lifting gantry 92 is slidably matched with the gantry bracket 91, and the inner side is slidably matched with the secondary lifting gantry 93;

[0062] At least one U-shaped plate 94 is welded to each of the gantry bracket 91 , the primary lifting gantry 92 and the secondary lifting gantry 93 .

[0063] The ear plate 911 is hinged on the telescopic frame 62, and the folding cylinder 65 is hinged on the U-shaped plate 94 above the door-shaped bracket 91. Two suction cup seats II 74 are installed on the secondary lifting door frame 93. In this embodiment, the door frame lifting mechanism 9 is a guide rail sliding type, and a plurality of composite bearings 20 are arranged in the slideway, which can reduce friction and make sliding more convenient, and also increase the bearing capacity of the guide rail.

[0064] The U-shaped plate 94 can not only improve the strength of the gantry structure, but also realize the limit function of the first-stage lifting gantry 92 and the second-stage lifting gantry 93 by setting different specifications and positional relationships of the U-shaped plate 94. When the gantry lifting mechanism 9 extends, the lifting cylinder 50 extends to first drive the second-stage lifting gantry 93 to extend upward until the U-shaped plate 94 below it is blocked by the U-shaped plate 94 above the first-stage lifting gantry 92. As the lifting cylinder 50 continues to extend, it then drives the first-stage lifting gantry 92 to extend upward until the U-shaped plate 94 below it is blocked by the U-shaped plate 94 above the gantry bracket 91, or until the lifting cylinder 50 extends to the set limit length and stops, at which time the gantry lifting mechanism 9 extends to the maximum length. After that, the lifting cylinder 50 retracts, and the second-stage lifting gantry 93 retracts first until the flat plate above it presses the U-shaped plate 94 above the first-stage lifting gantry 92, and then the first-stage lifting gantry 92 retracts.

[0065] Generally, expansion joints should be reserved for concrete shoulders to accommodate the expansion or contraction of the shoulders and extend the life of the shoulders. By setting the forming lengths of the anti-collision shoulder forming cavity 42 and the curbstone shoulder forming cavity 82, after the slipform mold completes several shoulder forming operations and reaches the specified unit length, the expansion joint spacing can be directly reserved before the next round of continuous forming operations. This saves the process of measuring dimensions and cutting seams, and further improves construction efficiency.

[0066] Combination Fig.18 The anti-collision shoulder mold 4 is arranged on the push-roll chassis 1, and a counterweight block 3 is arranged at a corresponding position of the push-roll chassis 1.

[0067] Embodiment 3

[0068] The multi-stage lifting mechanism of this embodiment is equipped with the curbstone shoulder mold 8, and the suction cup mechanism 7 is installed on the lower suction cup seat Ⅰ73, that is, there is no load on the secondary slide bar lifting frame 53, and the tension spring 535 is always in a stretched state. The adjustment bolt 536 is tightened to support the secondary support 532, and the tension spring 535 is further stretched, so that the lower end of the lock hook 533 hooks the primary support 522, so that the secondary slide bar lifting frame 53 and the primary slide bar lifting frame 52 cannot slide relative to each other. When the lifting cylinder 50 is extended, the primary slide bar lifting frame 52 extends upward, that is, the secondary slide bar lifting frame 53 can also move with it. A plurality of vibrating rods 10 are arranged on one side of the curbstone mold feed port 81, all of which are used to achieve the vibration of the material.

Claims

1. A multi-stage lifting mechanism, characterized in that: The invention comprises a lifting mechanism capable of translating in a vertical direction, the lifting mechanism comprising a fixed lifting bracket, a lifting cylinder (50), a primary lifting unit and a secondary lifting unit, one end of the lifting cylinder (50) is mounted on the lifting bracket and the other end is mounted on the secondary lifting unit, and both the primary lifting unit and the secondary lifting unit can be extended or retracted relative to the lifting bracket; At least one suction cup seat is installed on the lifting mechanism; when there are more than one suction cup seat, the suction cup seats are arranged up and down on the lifting mechanism; a suction cup mechanism (7) is detachably connected to any one of the suction cup seats, the suction cup mechanism (7) comprising a suction cup bracket (71) and a plurality of permanent magnets (72) installed on the suction cup bracket (71), the suction cup bracket (71) is connected to the suction cup seat, and the magnets (72) can be magnetically connected to or separated from the sliding mold; The suction cup bracket (71) is provided with a positioning block (711) for adjusting the horizontality of the suction cup bracket (71), and the suction cup seat is correspondingly provided with a fastening bolt (75) for clamping the positioning block (711); the suction cup bracket (71) is sleeved on the suction cup seat and then pressed with a flange (76), and the flange (76) is screwed to the suction cup seat; the lifting mechanism is a sliding rod lifting mechanism (5) or a gantry lifting mechanism (9); When the lifting mechanism is a sliding bar lifting mechanism (5), the lifting bracket is a sliding bar bracket (51), the first-level lifting unit is a first-level sliding bar lifting frame (52), and the second-level lifting unit is a second-level sliding bar lifting frame (53). The lifting bracket, the first-level lifting unit and the second-level lifting unit are provided with sliding bar sleeves for telescopic cooperation. Limiting elements are provided between the lifting bracket and the first-level lifting unit and between the first-level lifting unit and the second-level lifting unit. The second-level lifting unit is provided with a pair of locking hooks (533) arranged opposite to each other, and each of the locking hooks (533) is provided with an adjusting bolt (536). The tail end of the adjusting bolt (536) passes through the locking hook (533) and can be away from or against the second-level lifting unit. The lower end of the locking hook (533) can be separated from or hooked on the first-level lifting unit, and a tension spring (535) is connected between the upper ends of the two locking hooks (533); When the lifting mechanism is a gantry lifting mechanism (9), the lifting bracket is a gantry bracket (91), the primary lifting unit is a primary lifting gantry (92), and the secondary lifting unit is a secondary lifting gantry (93); The outer side of the primary lifting gantry (92) is in sliding cooperation with the door-shaped bracket (91), and the inner side is in sliding cooperation with the secondary lifting gantry (93); at least one U-shaped plate (94) is welded to each of the door-shaped bracket (91), the primary lifting gantry (92) and the secondary lifting gantry (93).

2. The multi-stage lifting mechanism according to claim 1, characterized in that: A sliding mold is magnetically attracted to the suction cup mechanism (7), and the sliding mold is any one of an anti-collision shoulder mold (4), a curbstone shoulder mold (8), or a soil shoulder mold.

3. A paving machine equipped with the multi-stage lifting mechanism according to claim 2, characterized in that: It comprises a push-roll base frame (1) and a driving main machine (2), wherein the multi-stage lifting mechanism is assembled on the push-roll base frame (1) and / or the driving main machine (2).

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