CN214783112U

CN214783112U - Road surface floating device

Info

Publication number: CN214783112U
Application number: CN202120296104.7U
Authority: CN
Inventors: 张彦飞; 包译宇; 王建成; 陈琦
Original assignee: Shanghai Xiaochong Construction Engineering Co ltd
Current assignee: Shanghai Xiaochong Construction Engineering Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-11-19
Anticipated expiration: 2031-02-02

Abstract

The utility model relates to a floating device in road surface relates to the field of floating device, and it includes the body, and fixed connection is close to the fixed plate of ground one end on the body, can dismantle on the fixed plate and be connected with first connecting plate and second connecting plate, first connecting plate with the second connecting plate is slided and is connected, the confession has been seted up on the fixed plate first connecting plate with the standing groove that the second connecting plate was placed, be provided with on the second connecting plate and be used for fixing the fixed subassembly of first connecting plate. This application has the effect of being convenient for accomodate the device of leveling the road surface.

Description

Road surface floating device

Technical Field

The application relates to the field of floating devices, in particular to a road surface floating device.

Background

Concrete generally refers to cement as a cementing material and sand and stone as aggregate; mixing with water (optionally containing additive and admixture) in a certain proportion, and stirring to obtain the cement concrete. After the concrete is laid, the concrete can be improved in hardening strength only by manually using a vibration instrument to carry out vibration compaction; because the concrete surface is easy to produce the arch in the course of laying, if let its nature harden will produce hard arch, be unfavorable for follow-up use, so still need trowel its surface after concrete laying is accomplished to improve the smoothness on concrete surface.

The utility model discloses a chinese utility model patent application for publication number is CN212128759U discloses road construction is with floating device in road surface, including the connecting plate, be provided with the support on the connecting plate, and the upper end fixed mounting of support has the backup pad, installs the vibration exciter in the backup pad, and fixed mounting has the floating plate on the connecting plate, and is provided with the adjustable counter weight structure that is used for the counter weight on the floating plate, and fixed mounting has the push rod in the backup pad, and is provided with the handle on the push rod.

In view of the above-described related art, the inventors have considered that, since the troweling plate is long in length, a large space is required when the road surface troweling apparatus is stored, storage is inconvenient, and there is room for improvement.

SUMMERY OF THE UTILITY MODEL

In order to accomodate the device is smoothed on the road surface for the convenience, this application provides a device is smoothed on road surface.

The application provides a road surface floating device adopts following technical scheme:

the utility model provides a floating device in road surface, includes the body, fixed connection is close to the fixed plate of ground one end on the body, can dismantle on the fixed plate and be connected with first connecting plate and second connecting plate, first connecting plate with the second connecting plate is slided and is connected, set up on the fixed plate and supply first connecting plate with the standing groove that the second connecting plate was placed, be provided with on the second connecting plate and be used for fixing the fixed subassembly of first connecting plate.

Through adopting above-mentioned technical scheme, be provided with first connecting plate and the second connecting plate that can dismantle the connection on the fixed plate, through dismantlement and installation to between first connecting plate and second connecting plate and the fixed plate, change the area size with ground contact to make the floating device in road surface can float the position to different width degrees, improve the suitability of product. The first connecting plate and the second connecting plate that slide and connect are arranged, so that the first connecting plate and the second connecting plate can keep the contact surface smooth after being spliced with the fixing plate, and the road can be conveniently screeded.

Optionally, a sliding column is arranged between the first connecting plate and the second connecting plate, one end of the sliding column is hinged to the first connecting plate, and a first groove for embedding the sliding column is formed in the first connecting plate; the sliding column is connected to the second connecting plate in a sliding mode, a second groove for the sliding column to be embedded is formed in the second connecting plate, and the fixing assembly is located on the sliding column.

Through adopting above-mentioned technical scheme, be provided with the slip post between first connecting plate and second connecting plate, the one end hinged joint of slip post is on first connecting plate, and the one end that the first connecting plate was kept away from to the post that slides and connects on the second connecting plate. When removing the slip post, first connecting plate and second connecting plate all remove to being close to direction each other, and when the post of sliding inlayed and locates in first recess and the second recess, first connecting plate and second connecting plate laminated each other to be convenient for put into the standing groove on the fixed plate with first connecting plate after laminating and second connecting plate in, improve the convenience of operation.

Optionally, the number of the sliding columns is at least two, and the sliding columns are uniformly distributed between the first connecting plate and the second connecting plate.

Through adopting above-mentioned technical scheme, through being provided with two at least sliding columns, be favorable to strengthening the fixed between first connecting plate and the second connecting plate on the one hand, improve structural strength. On the other hand is favorable to making the relative slip between first connecting plate and the second connecting plate more stable, reduces the probability that takes place the skew at the in-process that slides, improves the stability of structure.

Optionally, the second connecting plate is connected with the dwang that slides on, the confession has been seted up on the second connecting rod the groove that slides that the dwang slided, just slide the groove with the second recess communicates each other.

Through adopting above-mentioned technical scheme, it is connected with the dwang to slide on the second connecting plate, slides at the inslot that slides through the dwang to make first connecting plate and second connecting plate take place relative slip and be close to, finally make first connecting plate and second connecting plate laminate mutually, improve the convenience of operation.

Optionally, the fixing assembly comprises a limiting protrusion and a pressure spring, the sliding column is provided with a placement groove for mounting the limiting protrusion and the pressure spring, and the second connecting plate is provided with an embedding groove for embedding the limiting protrusion.

Through adopting above-mentioned technical scheme, when sliding column and second connecting plate mutually perpendicular, inlay the inslot through the pressure spring with spacing arch bullet, make sliding column perpendicular to first connecting plate and second connecting plate and fixed simultaneously to make first connecting plate and second connecting plate be parallel to each other, be convenient for trowel the road.

Optionally, one end of the first connecting plate is provided with a first magnet, one end of the second connecting plate close to the first magnet is provided with a second magnet, and the fixing plate is provided with a third magnet mutually attracted with the first magnet and a fourth magnet mutually attracted with the second magnet.

Through adopting above-mentioned technical scheme, after first connecting plate and second connecting plate laminate each other, insert the standing groove with the first connecting plate and the second connecting plate of laminating each other in, through the mutual actuation between first magnet and third magnet and second magnet and the fourth magnet to in being fixed in the standing groove with first connecting plate and second connecting plate, reduce the probability that first connecting plate and second connecting plate break away from in the standing groove.

Optionally, a first mounting groove for mounting the first magnet is formed in the first connecting plate, a second mounting groove for mounting the second magnet is formed in the second connecting plate, a third mounting groove for mounting the third magnet and a fourth mounting groove for mounting the fourth magnet are formed in the fixing plate, and the third mounting groove, the fourth mounting groove and the placing groove are mutually communicated.

Through adopting above-mentioned technical scheme, at the in-process of installing first magnet, second magnet, third magnet and fourth magnet, inlay first magnet, second magnet, third magnet and fourth magnet respectively and locate first mounting groove, the second mounting groove, in third mounting groove and the fourth mounting groove, make first connecting plate and second connecting plate when getting into the standing groove, first connecting plate keeps leveling with the contact surface of the inner wall of standing groove with the second connecting plate, improve the stability of structure.

Optionally, one end of the first connecting plate, which is close to the fixing plate, is provided with a first clamping column, and the fixing plate is provided with a first clamping groove for clamping the first clamping column; the second connecting plate is close to the one end of fixed plate is provided with the second joint post, set up the confession on the fixed plate the second joint groove of second joint post joint.

Through adopting above-mentioned technical scheme, stretch to being parallel to each other and fixed back with first connecting plate and second connecting plate, through inserting first joint groove with the first joint post on the first connecting plate to and insert the second joint inslot with the second joint post on the second connecting plate, thereby be connected first connecting plate, second connecting plate and fixed plate, improve the convenience of operation.

Optionally, a first bolt for fixing the first connecting plate is arranged on the fixing plate, a first through hole for the first bolt to penetrate through is formed in the fixing plate, the first through hole is communicated with the first clamping groove, and a first penetrating groove for the first bolt to penetrate through is formed in the first clamping column; the fixing plate is provided with a second bolt for fixing the second connecting plate, the fixing plate is provided with a second through hole for the second bolt to penetrate through, the second through hole is communicated with the second clamping groove, and the second clamping column is provided with a second penetrating groove for the second bolt to penetrate through.

Through adopting above-mentioned technical scheme, after with first joint post and second joint post joint in first joint groove and second joint groove respectively, fix first connecting plate and fixed plate through first bolt to and fix second connecting plate and fixed plate through the second bolt, improve the joint strength between first connecting plate, second connecting plate and the fixed plate, improve the stability of structure.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the fixed plate is provided with the first connecting plate and the second connecting plate which are detachably connected, and the size of the area in contact with the ground is changed by detaching and installing the first connecting plate, the second connecting plate and the fixed plate, so that the pavement trowelling device can trowel positions with different widths, and the applicability of the product is improved;

2. the first connecting plate and the second connecting plate which are connected in a sliding mode are arranged, so that the first connecting plate and the second connecting plate can keep the contact surface smooth after being spliced with the fixing plate, and the road can be conveniently screeded;

3. after stretching first connecting plate and second connecting plate to being parallel to each other and fixed, through inserting first joint post on the first connecting plate in first joint groove to and insert the second joint post on the second connecting plate in the second joint inslot, thereby be connected first connecting plate, second connecting plate and fixed plate, improve the convenience of operation.

Drawings

Fig. 1 is a schematic structural diagram of a road surface smoothing device according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a first connecting plate and a second connecting plate according to an embodiment of the present application.

Fig. 3 is an exploded view of the first connecting plate, the second connecting plate and the fixing plate according to the embodiment of the present application.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is a schematic structural diagram of a first magnet and a second magnet according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a third magnet and a fourth magnet according to an embodiment of the present application.

Description of reference numerals: 1. a body; 11. a handle; 12. a vibration exciter; 2. a fixing plate; 20. a third card slot; 21. a first clamping groove; 22. a second clamping groove; 23. a first bolt; 24. a second bolt; 25. a first perforation; 26. a second perforation; 27. a placement groove; 271. a second insertion groove; 272. a fourth mounting groove; 273. a fourth card slot; 28. a first insertion groove; 29. a third mounting groove; 3. a first connecting plate; 31. a first groove; 32. a first clamp post; 321. a first through groove; 322. a first mounting groove; 323. a first card slot; 4. a second connecting plate; 41. a sliding groove; 42. a second groove; 43. embedding a groove; 44. a second clamp post; 441. a second through groove; 442. a second mounting groove; 443. a second card slot; 5. sliding the column; 51. mounting grooves; 6. rotating the rod; 7. a fixing assembly; 71. a limiting bulge; 72. a pressure spring; 81. a first magnet; 82. a first convex ball; 83. a third magnet; 84. a third convex ball; 85. a second magnet; 86. a second convex ball; 87. a fourth magnet; 88. and a fourth convex ball.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a road surface floating device. Referring to fig. 1, a road surface floating device includes body 1, and body 1 is last an organic whole to be connected with the handle 11 that supplies the staff to grip, and the welding has vibration exciter 12 on body 1, and the one end welding that body 1 is close to ground has fixed plate 2. In the use, the staff makes vibration conduction to fixed plate 2 on through starting vibration exciter 12, then vibrates on acting on cement concrete for cement concrete receives the vibration, and meanwhile the staff promotes whole device through handle 11 and removes, and fixed plate 2 removes at the concrete surface, and then cooperates the floating surface of vibration effect together.

Referring to fig. 1, a first connecting plate 3 and a second connecting plate 4 are detachably connected to a fixing plate 2, in the embodiment of the present application, two first connecting plates 3 are provided, the first connecting plates 3 are symmetrically distributed on two sides of the fixing plate 2, the second connecting plates 4 are in one-to-one correspondence with the first connecting plates 3, and relative sliding can occur between the first connecting plates 3 and the second connecting plates 4. When first connecting plate 3 and second connecting plate 4 are connected on fixed plate 2 in needs, take place relative sideslip to first connecting plate 3 and second connecting plate 4 through first connecting plate 3 and second connecting plate 4 and be parallel to each other, and first connecting plate 3 keeps away from second connecting plate 4 one side and fixed plate 2 and be close to the one side of vibration exciter 12 and be located same horizontal plane, and the one side that first connecting plate 3 was kept away from to second connecting plate 4 and fixed plate 2 keep away from the one side of vibration exciter 12 and be located same horizontal plane, with first connecting plate 3, second connecting plate 4 is fixed with fixed plate 2, thereby be convenient for change the area of contact to the plane of floating device and needs floating, make the product be applicable to the plane of different width degree, thereby improve the suitability of product.

Referring to fig. 1 and 2, a sliding column 5 is arranged between the first connecting plate 3 and the second connecting plate 4, in the embodiment of the present application, two sliding columns 5 are arranged, and the sliding columns 5 are uniformly distributed between the first connecting plate 3 and the second connecting plate 4, so that the stability of connection between the first connecting plate 3 and the second connecting plate 4 is improved. One end of the sliding column 5 is connected to the first connecting plate 3 through a hinge, and the end of the sliding column 5 far away from the first connecting plate 3 is connected to the second connecting plate 4 in a sliding manner. Be provided with dwang 6 on the second connecting plate 4, the sliding column 5 rotates to be connected on dwang 6, sets up the groove 41 that slides that supplies dwang 6 to slide on the second connecting plate 4. The first connecting plate 3 is provided with a first groove 31 for the sliding column 5 to be embedded, the second connecting plate 4 is provided with a second groove 42 for the sliding column 5 to be embedded, and the second groove 42 is communicated with the sliding groove 41.

Referring to fig. 3 and 4, a fixing component 7 for fixing the second connecting plate 4 is arranged on the sliding column 5, the fixing component 7 comprises a limiting protrusion 71 and a pressure spring 72, an installation groove 51 for installing the limiting protrusion 71 and the pressure spring 72 is formed in the sliding column 5, and an embedding groove 43 for embedding the limiting protrusion 71 is formed in the second connecting plate 4.

Referring to fig. 3, in the process of sliding the first connecting plate 3 and the second connecting plate 4, the worker pulls the first connecting plate 3 and the second connecting plate 4 in two opposite directions, and one end of the sliding column 5 close to the second connecting plate 4 slides in the sliding groove 41, so that the sliding column 5 rotates in a direction perpendicular to the first connecting plate 3. When the sliding column 5 is perpendicular to the second connecting plate 4, the limiting protrusion 71 is sprung into the embedding groove 43 under the deformation force of the pressure spring 72, so that the sliding column 5 and the second connecting plate 4 are fixed. The first connecting plate 3 and the second connecting plate 4 after fixing are parallel to each other, the first connecting plate 3 is perpendicular to the sliding column 5, and the second connecting plate 4 is also perpendicular to the sliding column 5.

Referring to fig. 3, the first connecting plate 3 is close to the integrative extension of one end of fixed plate 2 and has first joint post 32, and first joint post 32 is provided with two in this application embodiment, sets up the first joint groove 21 that supplies the joint of first joint post 32 on the fixed plate 2. The second connecting plate 4 has second joint post 44 near the integrative extension of one end of fixed plate 2, and second joint post 44 and first joint post 32 one-to-one are seted up on the fixed plate 2 and are supplied the second joint groove 22 of second joint post 44 joint. Be provided with first bolt 23 that is used for fixed first connecting plate 3 on the fixed plate 2, the one end that fixed plate 2 is close to first connecting plate 3 is seted up and is supplied first perforation 25 that first bolt 23 wore to establish, and first perforation 25 and first joint groove 21 intercommunication each other, sets up on the first joint post 32 and supplies first bolt 23 to wear to establish and fixed first wearing to establish groove 321. The one end that fixed plate 2 is close to second connecting plate 4 is provided with the second bolt 24 that is used for fixed second connecting plate 4, sets up the second perforation 26 that supplies second bolt 24 to wear to establish on the fixed plate 2, and the second perforation 26 communicates with each other with second joint groove 22, sets up the second that supplies second bolt 24 to wear to establish and fix on the second joint post 44 and wears to establish groove 441.

Referring to fig. 3, after the first connecting plate 3 and the second connecting plate 4 are stretched, the first clamping column 32 is clamped in the first clamping groove 21, the second clamping column 44 is clamped in the second clamping groove 22, the first bolt 23 is screwed in the first through groove 321 through the first through hole 25, and the second bolt 24 is screwed in the second through groove 441 through the second through hole 26, so that the first connecting plate 3 and the second connecting plate 4 are fixedly connected to the fixing plate 2.

Referring to fig. 3, an end cap 9 for closing the placing groove 27 is embedded on one side of the fixing plate 2 close to the first connecting plate 3, and a handle 91 is welded on one side of the end cap 9 away from the fixing plate 2. After the first connecting plate 3 and the second connecting plate 4 are inserted into the fixing plate 2, the placing groove 27 is sealed through the end cover 2, and the probability that cement enters the placing groove 27 and blocks the placing groove 27 is reduced.

Referring to fig. 3 and 4, when the first connecting plate 3 and the second connecting plate 4 need to be stored, a placing groove 27 for placing the first connecting plate 3 and the second connecting plate 4 is formed in the fixing plate 2, and the width of the placing groove 27 is greater than the sum of the widths of the first connecting plate 3 and the second connecting plate 4. The two sliding columns 5 are pushed towards the direction close to each other, the limiting protrusions 71 are separated from the embedding grooves 43, the sliding columns 5 slide towards the direction close to the second grooves 42, after the sliding columns 5 completely enter the sliding grooves 41, the first connecting plate 3 and the second connecting plate 4 are attached to each other, and the sliding columns 5 are located in cavities formed by splicing the first grooves 31 and the second grooves 42.

Referring to fig. 5 and 6, the first clamping columns 32 are provided with first magnets 81, and the first magnets 81 correspond to the first clamping columns 32 one to one. The first mounting groove 22 that supplies first magnet 81 to install is seted up to the one end that first joint post 32 kept away from first connecting plate 3, has first protruding ball 82 through glue adhesion on the first magnet 81, sets up on the first joint post 32 and supplies first protruding first draw-in groove 323 of inlaying the establishment, and first draw-in groove 323 and first mounting groove 22 communicate each other. When the first magnet 81 is mounted, the first magnet 81 is mounted by fitting the first convex ball 82 into the first receiving groove 323. The fixing plate 2 is provided with a third magnet 83 mutually attracted with the first magnet 81, the fixing plate 2 is provided with a first inserting groove 28 for clamping the first clamping column 32 and a third mounting groove 29 for mounting the third magnet 83, and the placing groove 27, the first inserting groove 28 and the third mounting groove 29 are mutually communicated. The third magnet 83 is adhered with a third convex ball 84 by glue, a third clamping groove 20 for embedding the third convex ball 84 is arranged on the fixing plate 2, and the third clamping groove 20 is communicated with the third mounting groove 29. The third magnet 83 is fixedly mounted in the fixed plate 2 by engaging the third stud ball 84 in the third engaging groove 20.

Referring to fig. 5 and 6, a second magnet 85 is disposed at one end of the second clamping column 44 close to the fixing plate 2, a second mounting groove 442 for mounting the second magnet 85 is disposed on the second clamping column 44, the second magnet 85 is adhered with the second convex ball 86 through glue, a second clamping groove 443 for clamping the second convex ball 86 is disposed on the second clamping column 44, and the second clamping groove 443 is communicated with the second mounting groove 442. The fixing plate 2 is provided with a second inserting groove 271 for inserting the second clamping column 44, and the second inserting groove 271 is communicated with the placing groove 27. The fixing plate 2 is provided with a fourth magnet 87 attracted to the second magnet 85, the fourth magnet 87 is located in the second inserting groove 271, the fixing plate 2 is provided with a fourth mounting groove 272 for mounting the fourth magnet 87, and the fourth mounting groove 272 is communicated with the second inserting groove 271. Have fourth protruding ball 88 through glue bonding on the fourth magnet 87, set up on the fixed plate 2 and supply fourth protruding ball 88 to inlay the fourth draw-in groove 273 of establishing, through with fourth protruding ball 88 joint in fourth draw-in groove 273, reduce the probability that fourth magnet 87 drops from the standing groove 27 in, improve the stability of structure.

Referring to fig. 5 and 6, one end of the first connecting plate 3 and one end of the second connecting plate 4, which are to be attached to each other, that are connected with the first clamping column 32 and the second clamping column 44 are inserted into the placement groove 27, the first clamping column 32 and the second clamping column 44 are respectively inserted into the first insertion groove 28 and the second insertion groove 271, and are attracted to each other by the first magnet 81 and the third magnet 83, and the second magnet 85 and the fourth magnet 87, so that the first connecting plate 3 and the second connecting plate 4 are fixed in the placement groove 27, and the probability that the first connecting plate 3 and the second connecting plate 4 are separated from the placement groove 27 is reduced.

Referring to fig. 5 and 6, by fixing the first connecting plate 3 and the second connecting plate 4 in the placing groove 27, on one hand, in the construction process, when the worker needs to take the first connecting plate 3 and the second connecting plate 4, the worker can directly take the first connecting plate 3 and the second connecting plate 4 out of the placing groove 27 for use, so that the operation convenience is improved, and on the other hand, the first connecting plate 3 and the second connecting plate 4 are convenient to store.

The implementation principle of the road surface floating device in the embodiment of the application is as follows: be provided with first connecting plate 3 and second connecting plate 4 in fixed plate 2, through sliding the slip post 5 on second connecting plate 4, and fix slip post 5 and second connecting plate 4 through spacing arch 71, make slip post 5 simultaneously perpendicular to first connecting plate 3 and second connecting plate 4, be fixed in fixed plate 2 with first joint post 32 and second joint post 44 respectively through first bolt 23 and second bolt 24 on, thereby increase the length of fixed plate 2, be convenient for floating the plane of broad.

When the road surface leveling device needs to be accommodated, the sliding column 5 slides to enter the second groove 42, so that the first connecting plate 3 and the second connecting plate 4 are attached to each other. The first connecting plate 3 and the second connecting plate 4 attached to each other are inserted into the placement groove 27 of the fixing plate 2, and the first magnet 81 and the third magnet 83 and the second magnet 85 and the fourth magnet 87 are attracted to each other, whereby the first connecting plate 3 and the second connecting plate 4 are fixed in the placement groove 27.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a road surface floating device, includes body (1), fixed connection is close to fixed plate (2) of ground one end on body (1), its characterized in that: the fixing plate is characterized in that a first connecting plate (3) and a second connecting plate (4) are detachably connected to the fixing plate (2), the first connecting plate (3) is connected with the second connecting plate (4) in a sliding mode, a placing groove (27) for the first connecting plate (3) and the second connecting plate (4) to place is formed in the fixing plate (2), and a fixing assembly (7) for fixing the first connecting plate (3) is arranged on the second connecting plate (4).

2. A road surfacing device according to claim 1, wherein: a sliding column (5) is arranged between the first connecting plate (3) and the second connecting plate (4), one end of the sliding column (5) is hinged to the first connecting plate (3), and a first groove (31) for the sliding column (5) to be embedded is formed in the first connecting plate (3); sliding column (5) sliding connection in on second connecting plate (4), offer on second connecting plate (4) and supply sliding column (5) inlay second recess (42) of establishing, fixed subassembly (7) are located on sliding column (5).

3. A road surfacing device according to claim 2, wherein: the number of the sliding columns (5) is at least two, and the sliding columns (5) are uniformly distributed between the first connecting plate (3) and the second connecting plate (4).

4. A road surfacing device according to claim 3, wherein: the second connecting plate (4) is connected with a rotating rod (6) in a sliding manner, a sliding groove (41) for sliding of the rotating rod (6) is formed in the second connecting plate (4), and the sliding groove (41) is communicated with the second groove (42).

5. A road surfacing device according to claim 4, wherein: fixed subassembly (7) include spacing arch (71) and pressure spring (72), seted up the confession on sliding column (5) spacing arch (71) with the arrangement groove of pressure spring (72) installation, seted up the confession on second connecting plate (4) spacing arch (71) inlay the groove (43) of establishing.

6. A road surfacing device according to claim 1, wherein: one end of the first connecting plate (3) is provided with a first magnet (81), one end of the second connecting plate (4) close to the first magnet (81) is provided with a second magnet (85), and the fixed plate (2) is provided with a third magnet (83) mutually attracted with the first magnet (81) and a fourth magnet (87) mutually attracted with the second magnet (85).

7. A road surfacing device according to claim 6, wherein: the first connecting plate (3) is provided with a first mounting groove (322) for mounting the first magnet (81), the second connecting plate (4) is provided with a second mounting groove (442) for mounting the second magnet (85), the fixing plate (2) is provided with a third mounting groove (29) for mounting the third magnet (83) and a fourth mounting groove (272) for mounting the fourth magnet (87), and the third mounting groove (29), the fourth mounting groove (272) and the placing groove (27) are communicated with each other.

8. A road surfacing device according to claim 1, wherein: a first clamping column (32) is arranged at one end, close to the fixing plate (2), of the first connecting plate (3), and a first clamping groove (21) for clamping the first clamping column (32) is formed in the fixing plate (2); second connecting plate (4) are close to the one end of fixed plate (2) is provided with second joint post (44), offer the confession on fixed plate (2) second joint groove (22) of second joint post (44) joint.

9. A road surfacing device according to claim 8, wherein: a first bolt (23) used for fixing the first connecting plate (3) is arranged on the fixing plate (2), a first through hole (25) for the first bolt (23) to penetrate through is formed in the fixing plate (2), the first through hole (25) is communicated with the first clamping groove (21), and a first penetrating groove (321) for the first bolt (23) to penetrate through is formed in the first clamping column (32);

the fixing plate (2) is provided with a second bolt (24) used for fixing the second connecting plate (4), the fixing plate (2) is provided with a second through hole (26) for the second bolt (24) to penetrate through, the second through hole (26) is communicated with the second clamping groove (22), and the second clamping column (44) is provided with a second penetrating groove (441) for the second bolt (24) to penetrate through.