Concrete surface layer slicking device

Abstract

The invention discloses a concrete surface layer slicking device which comprises an undercarriage and a lifting slicking device arranged on the undercarriage. The undercarriage comprises a supporting base and two sets of side unfolding supporting devices connected to the two sides of the supporting base, and the side unfolding supporting devices are used for being unfolded towards the outer side away from the supporting base so that the undercarriage can be supported on road surface foundations on the two sides in a rolling mode after crossing a concrete surface layer. And the height of the undercarriage in the vertical direction is adjustable, so that the supporting base is located above the concrete surface layer. An equipment groove is formed in the supporting base, the lifting slicking device is arranged on the supporting base, and the lifting slicking device comprises a scraping plate which is arranged in the equipment groove in an up-down lifting and penetrating mode, so that the concrete surface layer is slicked by the scraping plate when the undercarriage moves in the extending direction of the concrete surface layer. According to the device, the supporting base can be supported above a concrete surface layer with any thickness, meanwhile, the automation degree is high, the construction efficiency is high, the labor intensity of constructors is low, the flatness of the surface layer can be effectively guaranteed, and the construction effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of concrete pavement construction equipment, in particular to a concrete surface layer scraping device. Background Art

[0002] Double-layer continuously reinforced concrete pavement refers to the arrangement of upper and lower layers of steel bars in the cement concrete road slab. Since both the upper and lower layers of steel bars have a binding effect on the concrete, this structural slab has better integrity and stability, and can better adapt to the development trend of heavy-load traffic.

[0003] During the construction of the double-layer continuous reinforced concrete surface layer, the surface layer needs to be scraped to ensure the flatness of the subsequent road surface. In the prior art, manual scraping tools are often used for construction operations, which is inefficient and labor-intensive. At the same time, manual work cannot ensure the flatness of the surface layer, which in turn affects the construction effect of the subsequent road surface. Summary of the invention

[0004] The invention provides a concrete surface layer scraping device to solve the technical problems of low efficiency and failure to ensure the flatness of the surface layer in the existing manual scraping, which affects the subsequent road construction effect.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A concrete surface scraping device comprises: a vehicle chassis frame that is rollingly supported on a road surface foundation, and a lifting and scraping device arranged on the vehicle chassis frame; the vehicle chassis frame comprises a support base, and two groups of side support devices connected to both sides of the support base in the width direction, the two groups of side support devices are used to expand toward the outside away from the support base, so that the vehicle chassis frame can be rolled and supported on the road surface foundation on both sides of the concrete surface layer after crossing the concrete surface layer, and the vertical height of the vehicle chassis frame can be adjusted so that the support base is located above the concrete surface layer; an equipment groove is arranged through the support base, and the lifting and scraping device is arranged on the support base, and the lifting and scraping device comprises a scraper that is lifted and lowered and passed through the equipment groove, so that the scraper can scrape the concrete surface layer when the vehicle chassis frame moves along the extension direction of the concrete surface layer.

[0007] Furthermore, each set of side support devices includes a side telescopic device and two sets of rolling support devices; the inner end of the side telescopic device is connected to the support base, and its relative outer end is telescopically arranged to be correspondingly retracted or laterally expanded; the two sets of rolling support devices are arranged in sequence front and back along the sliding direction of the side support device, and each rolling support device is rollingly supported on the road surface, and is adjustably connected to the outer end of the side telescopic device along the height direction.

[0008] Furthermore, the side expansion and telescopic device includes a fixed bracket fixed on the support base, a telescopically arranged driving telescopic rod, a scissors-type expansion frame for lateral expansion or contraction, and a mounting plate group that serves as an installation support; the fixed end of the driving telescopic rod is connected to the fixed bracket, and its opposite telescopic end is telescopically arranged outward in the width direction of the support base, and the telescopic end of the driving telescopic rod is connected to the mounting plate group; the scissors-type expansion frame is supported on the driving telescopic rod, and the scissors-type expansion frame is respectively connected to the fixed bracket and the mounting plate group on both sides along its expansion direction.

[0009] Furthermore, the mounting plate group includes a mounting plate fixed to the telescopic end of the driving telescopic rod, and two mounting strips vertically connected to the outer side surface of the mounting plate, the outer side surface of the mounting strip is provided with a limiting groove which is concave and extends along its length direction, and the two opposite side surfaces of the limiting groove are also provided with insertion holes which are arranged in sequence and spaced apart along the height direction and penetrate through; each group of rolling support devices includes a lifting block which is slidably mounted in the corresponding limiting groove, a rolling wheel which is mounted on the lifting block and rollingly supported on the road surface foundation, and a pin for fixing the height position of the lifting block in the limiting groove; the pin is used to be inserted into the insertion hole and the lifting block at different height positions, so as to fix the height position of the lifting block in the limiting groove and thereby adjust the support height of the side expansion support device.

[0010] Furthermore, each set of side expansion support devices also includes multiple sets of telescopic guide and limit devices, which are arranged in sequence front and back along the sliding direction of the vehicle chassis; one end of each guide and limit device is connected to the support base, and the other opposite end is connected to the mounting plate group, so as to guide and limit the lateral extension of the side expansion and telescopic device.

[0011] Furthermore, the lifting and scraping device also includes a mounting base supported on the supporting base, a lifting frame mounted on the mounting base for sliding up and down, and a lifting drive mechanism for driving the lifting frame to move; the mounting end of the lifting drive mechanism is connected to the mounting base, and its opposite telescopic end is connected to the lifting frame; the scraper is fixed to the lifting frame.

[0012] Furthermore, the mounting base includes two limit frames respectively arranged at both ends of the equipment slot, and a support frame fixed on the support base; the two limit frames are respectively provided with concave embedding grooves extending along the height direction on the opposite inner side surfaces, and the two sides of the lifting frame are respectively slidably installed in the two embedding grooves; the lifting drive mechanism is supported on the support frame.

[0013] Furthermore, the lifting drive mechanism includes a plurality of telescopic push rods arranged in sequence along the width direction of the lifting frame, each telescopic push rod is arranged vertically, the bottom end of the telescopic push rod is fixedly supported on the support frame, and the opposite telescopic end thereof is fixedly connected to the lifting frame.

[0014] Furthermore, the concrete surface layer scraping device also includes a spraying device for spraying the concrete surface layer, and the spraying device is arranged on the supporting base and connected to the scraper.

[0015] Furthermore, the spray device includes a water tank fixed on a supporting base, a connecting pipe connected to a side wall of the water tank, a delivery pump connected to a water outlet end of the connecting pipe, a connecting hose connected to a water outlet end of the delivery pump, a water distribution pipe connected to a water outlet end of the connecting hose, and a plurality of nozzles connected to the water distribution pipe; the water distribution pipe is fixed on a vertical surface of the scraper; and the plurality of nozzles are arranged in sequence along the length direction of the water distribution pipe, and a nozzle end of each nozzle faces the concrete surface layer.

[0016] The present invention has the following beneficial effects:

[0017] In the concrete surface layer scraping device of the present invention, the two groups of side expansion support devices on both sides of the vehicle undercarriage in the width direction can be expanded outward in the width direction, so that the vehicle undercarriage spans over the concrete surface layer, and the two groups of side expansion support devices are respectively supported on the road surface foundations on both sides of the concrete surface layer, which not only facilitates the vehicle undercarriage to move along the extension direction of the concrete surface layer, but also due to the side expansion extension effect of the two groups of side expansion support devices, the scraping device of the present invention can be supported across the concrete surface layer of any width, so as to be suitable for different construction scenes. At the same time, the vertical height of the vehicle undercarriage is adjustable, so that the support base can be kept supported above the concrete surface layer of any thickness, so as to facilitate the installation of the lifting and scraping device and the up and down lifting and lowering action of the scraper; on the other hand, the lifting and scraping device The scraper in the scraper leveling device is lifted up and down and passed through the equipment slot, so as to ensure that the bottom surface of the scraper contacts the upper surface of the concrete surface layer of any thickness. When the undercarriage slides along the extension direction of the concrete surface layer, the scraper in contact with the upper surface of the concrete surface layer is driven to slide synchronously, so as to automatically scrape the concrete surface layer level. It has a high degree of automation, high construction efficiency and low labor intensity of construction personnel. It can effectively ensure the flatness of the surface layer and the construction effect, and solves the problem that in order to ensure the flatness of the subsequent road surface during the construction of the existing double-layer continuous reinforced concrete surface layer, the surface layer needs to be scraped level in order to ensure the flatness of the subsequent road surface. Most of the construction operations are carried out manually using scraping tools, which has low efficiency. At the same time, manual labor cannot ensure the flatness of the surface layer, which affects the construction effect of the subsequent road surface.

[0018] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 2 is a top view of the structure of a concrete surface layer scraping device according to a preferred embodiment of the present invention;

[0021] Figure 2 yes Figure 1 Schematic diagram of the spatial structure of the rolling support device;

[0022] Figure 3 yes Figure 1 Schematic diagram of the main structure;

[0023] Figure 4 yes Figure 1 Installation diagram of the lifting and leveling device and the spraying device Figure 1 ;

[0024] Figure 5 yes Figure 1 Installation diagram of the lifting and leveling device and the spraying device Figure 2 .

[0025] Legend:

[0026] 1. Lifting and leveling device; 111. Positioning frame; 1111. Mounting groove; 112. Support frame; 12. Lifting frame; 131. Telescopic push rod; 14. Scraper;

[0027] 2. Support base; 201. Equipment slot;

[0028] 3. Side extension and telescopic device; 31. Fixed bracket; 32. Driving telescopic rod; 33. Scissor fork expansion frame; 341. Mounting plate; 342. Mounting strip; 3421. Limiting groove;

[0029] 4. Rolling support device; 41. Lifting block; 42. Rolling wheel; 43. Latch;

[0030] 5. Guide and limit device; 51. Support column; 52. Fixed frame; 53. Guide and limit rod;

[0031] 6. Spraying device; 61. Water storage tank; 62. Connecting pipe; 63. Delivery pump; 64. Connecting hose; 65. Water distribution pipe; 66. Sprinkler. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0033] Reference Figure 1 and Figure 3The preferred embodiment of the present invention provides a concrete surface layer scraping device, comprising: a vehicle chassis frame that is rollingly supported on a road surface foundation, and a lifting and scraping device 1 disposed on the vehicle chassis frame. The vehicle chassis frame comprises a support base 2, and two sets of side support devices connected to both sides of the support base 2 in the width direction, the two sets of side support devices are used to expand outward away from the support base 2, so that the vehicle chassis frame can be rolled and supported on the road surface foundation on both sides of the concrete surface layer after crossing the concrete surface layer, and the vehicle chassis frame can be adjusted in the vertical direction so that the support base 2 is located above the concrete surface layer. A through-set equipment slot 201 is provided on the support base 2, and the lifting and scraping device 1 is disposed on the support base 2, and the lifting and scraping device 1 comprises a scraper 14 that is lifted and lowered and penetrated in the equipment slot 201, so that the scraper 14 scrapes the concrete surface layer when the vehicle chassis frame moves along the extension direction of the concrete surface layer.

[0034] In the concrete surface scraping device of the present invention, the two groups of side support devices on both sides of the wheel base frame in the width direction can be expanded outward in the width direction, so that the wheel base frame spans across the concrete surface layer, and the two groups of side support devices are respectively supported on the road surface foundation on both sides of the concrete surface layer, which not only facilitates the movement of the wheel base frame along the extension direction of the concrete surface layer, but also due to the side extension effect of the two groups of side support devices, the scraping device of the present invention can be supported across the concrete surface layer of any width, so as to be suitable for different construction scenes. At the same time, the vertical height of the wheel base frame is adjustable, so that the support base 2 can be kept supported above the concrete surface layer of any thickness, so as to facilitate the installation of the lifting and scraping device and the up and down lifting action of the scraper 14; on the other hand, the lifting and scraping The scraper 14 in the device 1 is lifted up and down and passed through the equipment slot 201, so as to ensure that the bottom surface of the scraper 14 contacts the upper surface of the concrete surface layer of any thickness. When the undercarriage slides along the extension direction of the concrete surface layer, the scraper 14 in contact with the upper surface of the concrete surface layer is driven to slide synchronously, so as to automatically scrape the concrete surface layer flat. The device has a high degree of automation, high construction efficiency and low labor intensity for construction personnel. It can effectively ensure the flatness of the surface layer and the construction effect, and solves the problem that the existing double-layer continuous reinforced concrete surface layer needs to be scraped flat in order to ensure the flatness of the subsequent road surface during construction. Manual construction operations are mostly carried out using scraping tools, which is inefficient. At the same time, manual labor cannot ensure the flatness of the surface layer, which affects the construction effect of the subsequent road surface.

[0035] Alternatively, if Figure 1As shown, each set of side expansion support devices includes a side expansion telescopic device 3 and two sets of rolling support devices 4. The inner end of the side expansion telescopic device 3 is connected to the support base 2, and its opposite outer end is telescopically arranged to be correspondingly folded or laterally expanded. The two sets of rolling support devices 4 are arranged in sequence front and back along the sliding direction of the side expansion support device, and each rolling support device 4 is rolling supported on the road surface foundation, and is adjustably connected to the outer end of the side expansion telescopic device 3 along the height direction. In this optional scheme, each set of side expansion support devices includes two sets of rolling support devices 4 arranged in sequence front and back along the sliding direction, and can also be multiple sets of rolling support devices 4 arranged in sequence front and back, so that the vehicle undercarriage is stably supported on the road surface foundation.

[0036] In this option, if Figure 1 and Figure 3 As shown, the side extension and telescopic device 3 includes a fixed bracket 31 fixed on the support base 2, a telescopically arranged driving telescopic rod 32, a scissor-type expansion frame 33 for horizontal expansion or contraction, and a mounting plate group for installation support. The fixed end of the driving telescopic rod 32 is connected to the fixed bracket 31, and the opposite telescopic end thereof is telescopically arranged toward the outside of the width direction of the support base 2, and the telescopic end of the driving telescopic rod 32 is connected to the mounting plate group. The scissor-type expansion frame 33 is supported on the driving telescopic rod 32, and the scissor-type expansion frame 33 is respectively connected to the fixed bracket 31 and the mounting plate group on both sides along the expansion direction thereof. In this optional solution, the scissors-type deployment frame 33 is an existing conventional scissors-type structure. When the telescopic rod 32 is driven to extend outward, it simultaneously drives the mounting plate group to move outward. Since one side of the scissors-type deployment frame 33 is fixedly connected to the fixed bracket 31, and the other side is connected to the mounting plate group, when the mounting plate group moves outward, it pulls the scissors-type deployment frame 33 to expand outward. Therefore, through the setting of the scissors-type deployment frame 33, the side expansion support device can be retracted inwardly close to the support base 2 for transportation and storage, or expanded in the width direction to adapt to concrete surface layers of different widths; when the telescopic rod 32 is driven to extend outward, it drives the rolling support device 4 to move outward through the mounting plate group to support the road surface foundation outside the concrete surface layer of any width.

[0037] Furthermore, if Figure 1 and Figure 2As shown, the mounting plate group includes a mounting plate 341 fixed to the telescopic end of the driving telescopic rod 32, and two mounting strips 342 vertically connected to the outer side of the mounting plate 341. The outer side of the mounting strip 342 is provided with a concave limit groove 3421 extending along its length direction, and the two opposite sides of the limit groove 3421 are also provided with plug holes that are sequentially arranged and penetrated along the height direction. Each group of rolling support devices 4 includes a lifting block 41 slidably mounted in the corresponding limit groove 3421, a rolling wheel 42 mounted on the lifting block 41 and rollingly supported on the road surface, and a pin 43 for fixing the height position of the lifting block 41 in the limit groove 3421. The pin 43 is used to be inserted into the plug hole and the lifting block 41 at different height positions, so as to fix the height position of the lifting block 41 in the limit groove 3421 and thereby adjust the support height of the side extension support device. In this optional solution, the vehicle chassis can be pushed to move by applying external force, or a conventional structure can be designed to make the vehicle chassis automatically. In actual design, a through hole is machined on the lifting block 41. When the pin 43 is inserted into the corresponding two sockets and the through hole, the lifting block 41 is fixed in the limit groove 3421. At the same time, the pin 43 is inserted into the sockets at different heights to adjust the height position of the lifting block 41 fixed in the limit groove 3421, thereby adjusting the support height of the rolling support device 4, that is, the support height of the entire wheel chassis, to ensure that the support base 2 is located above the concrete surface layer of any thickness.

[0038] Preferably, if Figure 1 and Figure 3 As shown, each set of side expansion support devices also includes multiple sets of telescopic guide limit devices 5, and the multiple sets of guide limit devices 5 are sequentially arranged front and back along the sliding direction of the vehicle chassis. One end of each guide limit device 5 is connected to the support base 2, and the other end thereof is connected to the mounting plate group, so as to guide and limit the lateral extension of the side expansion telescopic device 3. In this preferred embodiment, the guide limit device 5 includes a support column 51, a fixing frame 52 fixed on the support column 51, and a telescopic guide limit rod 53. The guide limit rod 53 is a conventional multi-section sleeve rod connected in an inner and outer manner. One end of the guide limit rod 53 is connected to the fixing frame 52, and the other end thereof is connected to the mounting plate group, so that when the mounting plate group moves outward, the guide limit rod 53 is pulled to extend outward, thereby guiding and limiting the lateral extension of the side expansion telescopic device 3, so that the side expansion telescopic device 3 can be stably extended outward.

[0039] Alternatively, if Figure 1As shown, the lifting and leveling device 1 also includes a mounting base supported on the supporting base 2, a lifting frame 12 slidably mounted on the mounting base, and a lifting drive mechanism for driving the lifting frame 12. The mounting end of the lifting drive mechanism is connected to the mounting base, and the opposite telescopic end thereof is connected to the lifting frame 12. The scraper 14 is fixed to the lifting frame 12. During operation, the lifting drive mechanism is telescoped, thereby driving the lifting frame 12 to rise and fall, and the lifting and falling of the lifting frame 12 further drives the scraper 14 to rise and fall, so as to adjust the distance between the bottom surface of the scraper 14 and the concrete surface layer, thereby adapting to the leveling of the surface of concrete surfaces of different thicknesses, and improving the adaptability of the device.

[0040] In this option, if Figure 1 , Figure 3 , Figure 4-5 As shown, the installation base includes two limit frames 111 respectively arranged at both ends of the equipment slot 201, and a support frame 112 fixed on the support base 2. The two limit frames 111 have respective opposite inner sides provided with recessed mounting grooves 1111 extending in the height direction, and the two sides of the lifting frame 12 are respectively slidably mounted in the two mounting grooves 1111. The lifting drive mechanism is supported on the support frame 112.

[0041] Furthermore, if Figure 5 As shown, the lifting drive mechanism includes a plurality of telescopic push rods 131 arranged in sequence along the width direction of the lifting frame 12, each telescopic push rod 131 is arranged vertically, the bottom end of the telescopic push rod 131 is fixedly supported on the support frame 112, and the opposite telescopic end thereof is fixedly connected to the lifting frame 12. In this further solution, by setting a plurality of telescopic push rods 131, not only the driving force is increased, but also the lifting frame 12 can be stably pushed to be lifted and lowered stably, thereby stably lifting and lowering the scraper 14, so as to accurately adjust the distance between the bottom surface of the scraper 14 and the upper surface of the concrete surface layer, and finally improve the scraping effect of the surface layer, so that the surface layer is flat to ensure the construction effect.

[0042] Preferably, if Figure 1 , Figure 4 As shown, the concrete surface layer scraping device also includes a spraying device 6 for spraying the concrete surface layer. The spraying device 6 is arranged on the supporting base 2 and connected to the scraper 14.

[0043] In this preferred embodiment, Figure 4As shown, the spray device 6 includes a water tank 61 fixed on the support base 2, a connecting pipe 62 connected to the side wall of the water tank 61, a delivery pump 63 connected to the water outlet end of the connecting pipe 62, a connecting hose 64 connected to the water outlet end of the delivery pump 63, a water distribution pipe 65 connected to the water outlet end of the connecting hose 64, and a plurality of nozzles 66 connected to the water distribution pipe 65. The water distribution pipe 65 is fixed on the vertical surface of the scraper 14. A plurality of nozzles 66 are arranged in sequence along the length direction of the water distribution pipe 65, and the nozzle end of each nozzle 66 faces the concrete surface layer. During construction, the delivery pump 63 draws water from the water tank 61 and delivers it to the water distribution pipe 65 through the connecting hose 64, and finally sprays it onto the concrete surface layer through the plurality of nozzles 66 for wetting, so as to prevent the material from sticking due to drying during scraping and ensure the construction effect.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A concrete surface scraping device, characterized in that: include: A vehicle chassis frame that is rollingly supported on a road surface foundation, and a lifting and leveling device (1) disposed on the vehicle chassis frame; The undercarriage frame comprises a support base (2) and two sets of side support devices connected to both sides of the support base (2) in the width direction, the two sets of side support devices being used to be deployed toward the outside away from the support base (2) so that the undercarriage frame can be supported on the road surface foundation on both sides of the concrete surface layer after it crosses the concrete surface layer, and the height of the undercarriage frame in the vertical direction can be adjusted so that the support base (2) is located above the concrete surface layer; A penetrating equipment slot (201) is provided on the support base (2); a lifting and leveling device (1) is provided on the support base (2); the lifting and leveling device (1) comprises a scraper (14) that is lifted and lowered and passed through the equipment slot (201), so that the scraper (14) can level the concrete surface layer when the undercarriage moves along the extension direction of the concrete surface layer.

2. The concrete surface scraping device according to claim 1, characterized in that: Each set of side expansion support devices comprises a side expansion telescopic device (3) and two sets of rolling support devices (4); The inner end of the side expansion and retracting device (3) is connected to the support base (2), and the opposite outer end thereof is telescopically arranged to be correspondingly folded or laterally expanded; Two groups of rolling support devices (4) are arranged in sequence front and back along the sliding direction of the side expansion support device, and each rolling support device (4) is rolling supported on a road surface foundation and is adjustably connected to the outer end of the side expansion telescopic device (3) along the height direction.

3. The concrete surface scraping device according to claim 2, characterized in that: The side expansion and telescopic device (3) comprises a fixed bracket (31) fixed on the support base (2), a telescopic driving telescopic rod (32), a scissor-type expansion frame (33) for horizontal expansion or contraction, and a mounting plate group for mounting and supporting; The fixed end of the driving telescopic rod (32) is connected to the fixed bracket (31), and the opposite telescopic end thereof is telescopically arranged toward the outside in the width direction of the supporting base (2), and the telescopic end of the driving telescopic rod (32) is connected to the mounting plate group; The scissor-type deployment frame (33) is supported on the driving telescopic rod (32), and the two sides of the scissor-type deployment frame (33) along the deployment direction thereof are respectively connected to the fixed bracket (31) and the mounting plate group.

4. The concrete surface scraping device according to claim 3, characterized in that: The mounting plate assembly comprises a mounting plate (341) fixed to the telescopic end of the driving telescopic rod (32), and two mounting strips (342) vertically connected to the outer side of the mounting plate (341), the outer side of the mounting strip (342) is provided with a concave limiting groove (3421) extending along its length direction, and two opposite side surfaces of the limiting groove (3421) are also provided with insertion holes which are arranged in sequence and pass through in the height direction; Each set of rolling support devices (4) comprises a lifting block (41) slidably mounted in a corresponding limiting groove (3421), a rolling wheel (42) mounted on the lifting block (41) and rollingly supported on a road surface, and a latch (43) for fixing the height position of the lifting block (41) in the limiting groove (3421); The latch pin (43) is used to be inserted into the insertion holes and the lifting block (41) at different height positions, so as to fix the height position of the lifting block (41) in the limiting groove (3421) and thereby adjust the support height of the side support device.

5. The concrete surface scraping device according to claim 3, characterized in that: Each set of side support devices also includes a plurality of sets of telescopically arranged guide limit devices (5), and the plurality of sets of guide limit devices (5) are arranged in sequence front to back along the sliding direction of the vehicle chassis; One end of each guiding and limiting device (5) is connected to the supporting base (2), and the other opposite end is connected to the mounting plate group, so as to guide and limit the lateral extension of the lateral extension and telescopic device (3).

6. The concrete surface scraping device according to claim 1, characterized in that: The lifting and scraping device (1) also includes a mounting base supported on the supporting base (2), a lifting frame (12) mounted on the mounting base in an up-and-down sliding manner, and a lifting drive mechanism for driving the lifting frame (12) to move; The mounting end of the lifting drive mechanism is connected to the mounting base, and the opposite telescopic end thereof is connected to the lifting frame (12); The scraper (14) is fixed to the lifting frame (12).

7. The concrete surface scraping device according to claim 6, characterized in that: The mounting base comprises two limit frames (111) respectively arranged at two ends of the equipment slot (201), and a support frame (112) fixed on the support base (2); The two limiting frames (111) are provided with respective mounting grooves (1111) which are concave and extend in the height direction on the opposite inner side surfaces, and the two sides of the lifting frame (12) are respectively slidably mounted in the two mounting grooves (1111); The lifting drive mechanism is supported on the support frame (112).

8. The concrete surface scraping device according to claim 7, characterized in that: The lifting drive mechanism comprises a plurality of telescopic push rods (131) arranged in sequence and at intervals along the width direction of the lifting frame (12), each telescopic push rod (131) being arranged vertically, the bottom end of the telescopic push rod (131) being fixedly supported on the support frame (112), and the opposite telescopic end thereof being fixedly connected to the lifting frame (12).

9. The concrete surface scraping device according to claim 1, characterized in that: The concrete surface layer scraping device also includes a spraying device (6) for spraying the concrete surface layer. The spraying device (6) is arranged on the supporting base (2) and connected to the scraper (14).

10. The concrete surface scraping device according to claim 9, characterized in that: The spray device (6) comprises a water storage tank (61) fixed on the support base (2), a connecting pipe (62) connected to the side wall of the water storage tank (61), a delivery pump (63) connected to the water outlet end of the connecting pipe (62), a connecting hose (64) connected to the water outlet end of the delivery pump (63), a water distribution pipe (65) connected to the water outlet end of the connecting hose (64), and a plurality of spray heads (66) connected to the water distribution pipe (65); The water distribution pipe (65) is fixed on the vertical surface of the scraper (14); A plurality of nozzles (66) are arranged in sequence along the length direction of the water distribution pipe (65), and the nozzle end of each nozzle (66) faces the concrete surface layer.

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