Trowelling device for bridge expansion joint anchoring area concrete

Abstract

The utility model relates to a screeding device for bridge expansion joint anchoring area concrete, which comprises a shell with an open bottom, and a screeding mechanism and a flattening mechanism are arranged in the shell. The trowelling mechanism comprises a sliding assembly, a trowelling plate, a transmission assembly and a millstone assembly, the transmission assembly drives the sliding assembly to drive the trowelling plate to slide back and forth in the longitudinal direction of the shell, and meanwhile the millstone assembly is driven to rotate and trowelling; the flattening mechanism comprises driving assemblies fixed to the two sides of the shell, each driving assembly comprises a first connecting plate fixed to the inner wall of the shell, a transverse supporting rod is fixed to the lower portion of the first connecting plate, a first motor is arranged between the first connecting plate and the transverse supporting rod, and first rolling shafts are rotationally connected to the two ends of the lower portion of the transverse supporting rod. The output end of the first motor is rotationally connected with one end of the first rolling shaft. Through multi-stage trowelling of the first rolling shaft, the second rolling shaft, the trowelling plate and the grinding disc, the trowelling device has the advantages that mechanical loss is reduced, the trowelling efficiency is high, and the quality is good.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge expansion joint construction, in particular to a trowel device for concrete in an anchoring zone of a bridge expansion joint. Background Art

[0002] Bridge expansion joints refer to expansion joints set between the two beam ends, between the beam ends and the abutments, or at the hinged position of the bridge to meet the requirements of bridge deck deformation. Anchorage area concrete is poured on both sides of the expansion joint, which has the structural characteristics of narrow width and long length. After the concrete in the anchorage area of ​​the expansion joint is poured, the concrete surface needs to be smoothed and finished. The existing smoothing methods mainly include manual smoothing and mechanical smoothing. Manual smoothing has problems such as high labor intensity, long time consumption, low work efficiency, and it is difficult to ensure the quality of smoothing. Mechanical smoothing includes flat-plate devices and disc-type devices. The flat-plate device uses a trowel plate to scrape and compact the raised sand and gravel on the surface by vibrating the trowel plate. The device has low scraping efficiency and the vibration mechanism produces a large impact, which is easy to cause discomfort to the staff. The disc-type device smoothes the surface by high-speed rotation of the smoothing disc. However, the raised sand and gravel on the concrete surface and the impact of the smoothing disc can easily cause it to be damaged. Therefore, how to develop a smoothing device dedicated to the concrete anchorage area of ​​bridge expansion joints is an urgent problem to be solved. Utility Model Content

[0003] In view of the problems existing in the prior art, the purpose of the utility model is to provide a smoothing device for concrete in the anchoring area of ​​bridge expansion joints, including a smoothing mechanism and a flattening mechanism, which has the advantages of reduced mechanical loss, high smoothing efficiency, good quality, etc. through multi-stage smoothing of a first roller, a second roller, a smoothing plate and a grinding disc, and avoids footprints caused by manual pushing and wheel tracks caused by wheel rolling.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A smoothing device for concrete in the anchoring area of ​​a bridge expansion joint comprises a shell with an open bottom, wherein a smoothing mechanism and a flattening mechanism are arranged in the shell; the smoothing mechanism comprises sliding components fixed on both sides of the shell, a flattening plate fixed to the bottom of the sliding component, a transmission component rotatably connected between the two sliding components, and a grinding disc component rotatably connected to the transmission component, wherein the sliding components are driven by the transmission component to drive the flattening plate to slide back and forth along the longitudinal direction of the shell, and the grinding disc component is driven to rotate and smooth at the same time; the flattening mechanism comprises a driving component fixed on both sides of the shell, the driving component comprises a first connecting plate fixed to the inner wall of the shell, a transverse support rod is fixed below the first connecting plate, a first motor is arranged between the first connecting plate and the transverse support rod, first rollers are rotatably connected to the two ends below the transverse support rod, and the output end of the first motor is rotatably connected to one end of the first roller.

[0006] Furthermore, the transmission assembly includes a third connecting plate fixed on the inner wall of the shell, a second motor is fixed on the third connecting plate, a first rotating shaft is provided above the third connecting plate, both ends of the first rotating shaft are respectively rotatably connected to the two sliding assemblies, a first gear is provided on the first rotating shaft, a second rotating shaft is rotatably connected between the second motor and the grinding disc assembly, and the first gear and the second rotating shaft are respectively meshed and connected with the output end of the second motor.

[0007] Furthermore, the output end of the second motor includes a transmission gear and an end gear, the end gear is located outside the transmission gear, the transmission gear is meshed and connected with the first gear, and the end gear is meshed and connected with the second rotating shaft.

[0008] Furthermore, the sliding assembly includes a sliding rail fixed to the inner wall of the shell, a sliding frame slidably connected to the sliding rail, and a sliding plate slidably arranged in the sliding frame up and down. The bottom of the sliding frame is fixedly connected to the trowel plate. The sliding plate is provided with a strip groove, and a gear column platform is provided in the strip groove. An annular track for the displacement of the second rotating shaft is formed between the strip groove and the gear column platform. A plurality of gear columns are arranged on the gear column platform at certain intervals. An end gear meshing with the gear column is provided on the first rotating shaft. Through the meshing of the end gear and the gear column, the first rotating shaft can move in the annular track to drive the sliding plate to slide up and down in the sliding frame, and at the same time drive the sliding frame to slide back and forth on the sliding rail.

[0009] Furthermore, the grinding wheel assembly includes a fourth connecting plate fixed to the inner wall of the shell and a third rotating shaft vertically passing through the fourth connecting plate, the upper end of the third rotating shaft has a second gear, the second gear is meshingly connected to the second rotating shaft, and the lower end of the third rotating shaft has a grinding wheel for rotating and smoothing the concrete in the anchor area of ​​the bridge expansion joint.

[0010] Furthermore, the grinding disc includes a connecting block and a plurality of grinding plates, the connecting block is fixedly connected to the fourth rotating shaft, and the plurality of grinding plates are circumferentially arranged on the connecting block at certain intervals.

[0011] Furthermore, the flattening mechanism also includes a driven component fixed on both sides of the shell, the driven component includes a second connecting plate fixed on the inner wall of the shell, and the lower ends of the second connecting plate are rotatably connected to a second roller for initially flattening the concrete, and the second roller is located in front of the first roller.

[0012] Furthermore, a handle and a controller are provided on the top of the shell, and the first motor and the second motor are respectively connected to the controller circuit.

[0013] Furthermore, the output end of the first motor has a rotating rod, and the rotating rod is rotatably connected to one end of the first roller through a transmission belt.

[0014] Furthermore, the driving assembly is located between the sliding assembly and the grinding disc assembly.

[0015] The utility model has the following advantages:

[0016] 1. The flattening mechanism of the utility model has the advantages of high leveling efficiency, good quality, and avoiding wheel marks and footprints. The second roller is located in front of the first roller. The second roller can be used to initially flatten the raised sand and gravel on the concrete surface. The first roller can be used to further ensure the flatness of the concrete surface in the expansion joint anchoring area. The first motor drives the first roller to roll, so that the device moves forward as a whole, avoiding footprints caused by manual pushing and wheel marks caused by wheel rolling, and adapting to the structural characteristics of the narrow width and long length of the concrete in the expansion joint anchoring area.

[0017] 2. The smoothing mechanism of the utility model has the advantages of reducing mechanical loss, improving smoothing and finishing quality, etc. The sliding assembly slides forward and backward to drive the smoothing plate to rub forward and backward, replacing the vibration mechanism of the traditional smoothing device, reducing mechanical loss; through the high-speed rotation of the grinding disc, the concrete surface is smoothed and finished in one, which significantly improves the smoothing quality. The transmission assembly drives the sliding assembly to drive the smoothing plate to slide forward and backward along the longitudinal direction of the shell, and at the same time drives the grinding disc assembly to rotate and smoothen, ensuring that the smoothing plate and the grinding disc can maintain coordination during work, improving the smoothing efficiency, and achieving a more uniform smoothing effect. In addition, the secondary rolling of the flattening mechanism can avoid the impact of the grinding disc and the raised sand and gravel on the surface, further reducing mechanical loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a three-dimensional structural schematic diagram of a device for leveling concrete in an anchoring area of ​​a bridge expansion joint.

[0019] Figure 2 The utility model is a three-dimensional cross-sectional view of a device for leveling concrete in an anchoring area of ​​a bridge expansion joint.

[0020] Figure 3 yes Figure 2 Top view of the .

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the sliding component of the utility model.

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the drive assembly of the utility model.

[0023] Among them, 1 is a housing, 101 is an upper cover, 102 is a side plate, 103 is an opening, 104 is a controller, 105 is a handle frame, 2 is a smoothing mechanism, 201 is a sliding assembly, 201a is a slide rail, 201b is a sliding frame, 201c is a sliding plate, 201d is a strip groove, 201e is a tooth column platform, 201e1 is a tooth column, 201f is a circular track, 202 is a smoothing plate, 203 is a transmission assembly, 203a is a third connecting plate, 203b is a second motor, 203b1 is a transmission gear, 203b2 is an end gear, 2 03c is the first rotating shaft, 203c1 is the end gear, 203d is the first gear, 203e is the second rotating shaft, 203f is the fifth connecting plate, 204 is the grinding disc assembly, 204a is the fourth connecting plate, 204b is the third rotating shaft, 204c is the second gear, 204d is the grinding disc, 3 is the flattening mechanism, 301 is the driving assembly, 301a is the first connecting plate, 301b is the transverse support rod, 301c is the first motor, 301d is the first roller, 302 is the driven assembly, 302a is the second connecting plate, and 302b is the second roller. DETAILED DESCRIPTION

[0024] The following description is essentially only exemplary and is not intended to limit the present invention, its application or use. It will be further understood that the term "include" and / or "comprising" specifies the existence of the features, wholes, steps, operations, elements and / or parts described when used in this specification, but does not exclude the existence of one or more other features, wholes, steps, operations, elements, parts and / or its groups or add one or more other features, wholes, steps, operations, elements, parts and / or its groups. As used in this article, the term "and / or" includes any and all combinations of one or more of the associated listed items. It will be understood that when an element, component and / or part is referred to as "connected to another element, component and / or part", it can be directly connected to another element, component and / or part, or there can be an intermediate element. It will be understood that although the terms "first", "second" and the like can be used to describe various elements, components and / or parts in this article, these elements, components and / or parts should not be limited by these terms. These terms are only used to distinguish an element, component or part from another element, component or part. Therefore, the first element, component or part discussed below can be referred to as the second element, component or part without departing from the teaching of the utility model. Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meanings as those commonly understood by those of ordinary skill in the field to which the utility model belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the relevant field and / or the context of this specification, and will not be interpreted in an idealized or overly formal sense, unless explicitly defined as such herein.

[0025] It should be understood that, in order to clearly show the contents therein, the drawings herein are not drawn to scale, and the same or similar reference numerals indicate the same or similar components or parts. In addition, it should be understood that any embodiments described in this application and the technical features included therein can be combined with each other.

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] like Figure 1-5As shown, a trowel device for concrete in the anchoring area of ​​a bridge expansion joint comprises a shell 1 with an open bottom, wherein a trowel mechanism 2 and a flattening mechanism 3 are arranged in the shell 1; the trowel mechanism 2 comprises a sliding assembly 201 fixed on both sides of the shell 1, a trowel plate 202 fixed to the bottom of the sliding assembly 201, a transmission assembly 203 rotatably connected between the two sliding assemblies 201, and a grinding disc assembly 204 rotatably connected to the transmission assembly 203, wherein the sliding assembly 201 is driven by the transmission assembly 203 to drive the trowel plate 202 to move forward and backward along the longitudinal direction of the shell 1 Slide, and at the same time drive the grinding disc assembly 204 to rotate and smooth; the flattening mechanism 3 includes a driving assembly 301 fixed on both sides of the shell 1, the driving assembly 301 includes a first connecting plate 301a fixed to the inner wall of the shell 1, a transverse support rod 301b is fixed below the first connecting plate 301a, a first motor 301c is provided between the first connecting plate 301a and the transverse support rod 301b, and the two ends below the transverse support rod 301b are rotatably connected to the first roller 301d, and the output end of the first motor 301c is rotatably connected to one end of the first roller 301d. Among them, X is the longitudinal direction of the shell 1, which is also the moving direction of the shell 1. The driving component 301, the sliding component 201 and the grinding disc component 204 are all transversely fixed on two opposite inner walls of the shell 1. The shell 1 includes a plurality of side panels 102 and an upper cover 101 located above the side panels 102. The plurality of side panels 102 and the upper cover 101 together form a space with an open bottom, presenting a rectangular shell 1. The bottom of the shell 1 has an opening 103, so that the driving component 301, the sliding component 201 and the grinding disc component 204 arranged in the shell 1 are all in contact with the concrete pavement. In this embodiment, the number of side panels 102 is four, and the four side panels 102 and the upper cover 101 together form a space with an open bottom. There are two relatively long side panels 102 arranged along the longitudinal direction of the shell 1, and two relatively short side panels arranged along the transverse direction of the shell 1. The driving component 301, the sliding component 201 and the grinding disc component 204 are all fixedly connected to the two long side panels. Among them, the sliding component 201 is connected to the grinding disc component 204 through the transmission component 203. The transmission component 203 drives the sliding component 201 to drive the trowel plate 202 to slide back and forth along the longitudinal direction of the shell 1, and at the same time drives the grinding disc component 204 to rotate and smoothen, ensuring that the sliding component 201 and the grinding disc component 204 can maintain coordination during work, improve the smoothing efficiency, and achieve a more uniform smoothing effect. This transmission component 203 can be implemented in a variety of ways, such as using chains, belts, gears or other mechanical transmission devices.

[0028] The two sliding components 201 are respectively fixed on two opposite inner sides of the housing 1 to allow sliding in the longitudinal direction of the housing 1. The transmission component 203 is located between the two sliding components 201. The two sliding components 201 have the same structure. The transmission component 203 drives the two sliding components 201 to slide synchronously, and drives the trowel plate 202 to move back and forth on the concrete road surface to smooth it, ensuring that the movement trajectory of the trowel plate 202 on the road surface is stable and continuous, thereby achieving uniform smoothing of the concrete road surface. The trowel plate 202 is connected to the bottom of the two sliding components 201. Of course, the trowel plate 202 can also be a split type, that is, two trowel plates are provided, and the two trowel plates are respectively fixed to the bottom of the two sliding components. In addition, the front side of the trowel plate 202 has an upwardly inclined curved surface, which can prevent the trowel plate from accidentally shoveling up concrete or other impurities during the forward and backward movement, thereby improving the smoothing effect.

[0029] like Figure 2 and Figure 3 As shown, the transmission assembly 203 includes a third connecting plate 203a fixed to the inner wall of the housing 1, a second motor 203b is fixed on the third connecting plate 203a, a first rotating shaft 203c is provided above the third connecting plate 203a, two ends of the first rotating shaft 203c are respectively rotatably connected with the two sliding assemblies 201, a first gear 203d is provided on the first rotating shaft 203c, a second rotating shaft 203e is rotatably connected between the second motor 203b and the grinding disc assembly 204, and the first gear 203d and the second rotating shaft 203e are respectively meshed and connected with the output end of the second motor 203b. The output end of the second motor 203b includes a transmission gear 203b1 and an end gear 203b2, the end gear 203b2 is located outside the transmission gear 203b1, the transmission gear 203b1 is meshed and connected with the first gear 203d, and the end gear 203b2 is meshed and connected with the second rotating shaft 203e. Among them, the second motor 203b is horizontally arranged on the third connecting plate 203a, and the second motor 203b is arranged parallel to the first rotating shaft 203c, which is beneficial to reducing the energy loss in the transmission process. The output end of the second motor 203b has a transmission gear 203b1, and the transmission gear 203b1 is meshingly connected with the first gear 203d. The first gear 203d is driven to rotate by the second motor 203b, and the first rotating shaft 203c is driven to rotate, so that the sliding component 201 can slide back and forth.

[0030] like Figure 2-4As shown, the sliding assembly 201 includes a slide rail 201a fixed to the inner wall of the housing 1, a slide frame 201b slidably connected to the slide rail 201a, and a slide plate 201c slidably arranged in the slide frame 201b. The bottom of the slide frame 201b is fixedly connected to the trowel plate 202. The slide plate 201c is provided with a strip groove 201d. A tooth column platform 201e is provided in the strip groove 201d. A second rotating shaft 203e is formed between the strip groove 201d and the tooth column platform 201e. The first rotating shaft 203c is provided with an end gear 203c1 meshing with the gear column 201e1, and the first rotating shaft 203c is provided with an end gear 203c1 meshing with the gear column 201e1. Through the meshing of the end gear 203c1 and the gear column 201e1, the first rotating shaft 203c can drive the sliding plate 201c to slide up and down in the sliding frame 201b when moving in the circular track 201f, and at the same time drive the sliding frame 201b to slide forward and backward on the sliding rail 201a. The sliding frame 201b includes a square frame, one side of the square frame is provided with a slide buckle, the slide buckle is buckled on the sliding rail 201a, the bottom of the square frame is provided with a connecting column, the connecting column is detachably connected to the trowel plate 202, the square frame has a square opening, two opposite inner sides of the square opening are provided with sliding grooves, and the sliding plate 201c slides up and down in the sliding grooves. A connecting block is provided on the trowel plate 202, and the connecting block is fixed by nuts and connecting columns, so that the trowel plate 202 can be disassembled and replaced. In this embodiment, the bottom of the square frame has two connecting columns, and two connecting blocks are correspondingly provided on the trowel plate 202. Among them, a plurality of tooth columns 201e1 on the tooth column platform 201e are horizontally arranged at a certain interval along the longitudinal direction of the housing 1, and every two tooth columns 201e1 are meshed with the end gears 203c1 of the first rotating shaft 203c. The end of the first rotating shaft 203c extends into the annular track 201f and moves along the annular track of the annular track 201f. The annular track 201f includes a straight section and a curved section. When the end gear 203c1 is located in the straight section, the end gear 203c1 rotates and translates in one direction on the tooth column 201e1, thereby pushing the sliding frame 201b to achieve horizontal movement forward or backward. When the end gear 203c1 enters the curved section from the straight section, the end gear 203c1 moves in an arc around the tooth column 201e1 at the head end or the tail end, and its motion trajectory changes, forcing the sliding plate 201c to move upward or downward in the sliding frame 201b. Subsequently, the end gear 203c1 passes through the straight section again, and at this time, the end gear 203c1 rotates and translates in the other direction of the tooth column 201e1, thereby driving the sliding frame 201b to achieve horizontal movement in the opposite direction. The end gear 203c1 continuously rotates on the tooth column 201e1 and moves along the circular trajectory of the circular track 201f, thereby achieving the forward and backward movement of the trowel plate 202. The above-mentioned sliding assembly 201 only shows one way to achieve forward and backward sliding. It can be understood that the sliding method can be achieved through other transmission structures.

[0031] like Figure 2 and Figure 3 As shown, the grinding disc assembly 204 includes a fourth connecting plate fixed to the inner wall of the housing 1 and a third rotating shaft 204b vertically penetrating the fourth connecting plate, the upper end of the third rotating shaft 204b has a second gear, the second gear is meshed and connected with the second rotating shaft 203e, and the lower end of the third rotating shaft 204b has a grinding disc for rotating and smoothing the concrete in the anchoring area of ​​the bridge expansion joint. Specifically, both ends of the second rotating shaft 203e have end gears, and the two end gears are respectively meshed and connected with the output end of the second motor 203b and the second gear. Among them, the second rotating shaft 203e is horizontally arranged along the longitudinal direction of the housing 1, the second rotating shaft 203e and the third rotating shaft 204b are vertically arranged in the vertical direction, the second rotating shaft 203e and the second motor 203b are vertically arranged in the horizontal direction, and the positioning of the second rotating shaft 203e can be to set a fifth connecting plate 203f on the inner wall of the housing 1, and the fifth connecting plate 203f is rotatably connected with the second rotating shaft 203e to achieve the positioning of the second rotating shaft 203e.

[0032] like Figure 2 and Figure 3 As shown, the grinding disc includes a connecting block and a plurality of grinding plates, the connecting block is fixedly connected to the fourth rotating shaft, and the plurality of grinding plates are circumferentially arranged on the connecting block at certain intervals. In this embodiment, the number of the grinding plates is four, and the four grinding plates are circumferentially arranged outside the connecting block, and the angle between the two grinding plates is 90 degrees. The high-speed rotation of the grinding plates realizes the smoothing and finishing of the concrete pavement.

[0033] like Figure 2 and Figure 3 As shown, the flattening mechanism 3 also includes a driven assembly 302 fixed on both sides of the housing 1, and the driven assembly 302 includes a second connecting plate 302a fixed on the inner wall of the housing 1, and the lower ends of the second connecting plate 302a are rotatably connected with a second roller 302b for initially flattening the concrete, and the second roller 302b is located in front of the first roller 301d. The driven assembly 302 is transversely fixed on two opposite inner walls of the housing 1, and the driven assembly 302 is located in front of the sliding assembly 201, that is, close to the front end of the housing 1. The initial flattening of the raised sand and gravel on the concrete surface can be achieved through the rolling of the second roller 302b.

[0034] like Figure 1As shown, the top of the housing 1 has a handle frame 105 and a controller 104, and the first motor 301c and the second motor 203b are respectively connected to the controller 104 circuit. The handle frame 105 is convenient for operators to carry the equipment, and the controller 104 can realize automatic control. The first motor 301c and the second motor 203b are remotely controlled by the controller 104, and the first motor 301c drives the first roller 301d to roll, so that the device as a whole moves forward, backward and flattened. The second motor 203b drives the trowel plate 202 to move forward and backward and the grinding disc to rotate at high speed at the same time, so as to realize smoothing and finishing, with a high degree of automation, avoiding footprints caused by manual pushing and wheel tracks caused by wheel rolling, and adapting to concrete pavements in various scenes.

[0035] like Figure 5 As shown, the output end of the first motor 301c has a rotating rod, and the rotating rod is rotatably connected to one end of the first roller 301d through a transmission belt. The transmission belt effectively buffers the impact force when the first motor 301c outputs, and also makes the entire transmission process more stable and reliable. The transmission belt can withstand a large torque and maintain stable operation for a long time.

[0036] like Figure 2 and Figure 3 As shown, the drive assembly 301 is located between the sliding assembly 201 and the grinding disc assembly 204. This layout not only makes the structure of the entire device more compact, but also helps to achieve the stability and efficiency of power transmission. The drive assembly 301 is located in the middle of the housing 1, so that the device can maintain better stability during the forward movement.

[0037] The working method of the utility model is as follows:

[0038] S1. After the concrete pouring of the expansion joint anchoring area is completed, the pouring direction is used as the forward direction, and the smoothing device is placed at the end of the concrete in the expansion joint anchoring area. The controller 104 controls the second motor 203b to simultaneously drive the trowel plate 202 to rub back and forth and the grinding disc to rotate at high speed, and then the controller 104 controls the first motor 301c to drive the first roller 301d to drive the smoothing device forward;

[0039] S2, when the smoothing device reaches the other end of the concrete in the expansion joint anchoring area, the first motor 301c is turned off, the first roller 301d stops rotating, and the smoothing device stops moving forward;

[0040] S3, spraying water and covering the concrete in the expansion joint anchoring area for curing, and cleaning the first roller 301d, the second roller 302b, the trowel plate 202 and the grinding disc;

[0041] S4: After the concrete has initially set, repeat steps S1 and S2 to perform secondary smoothing and finishing.

[0042] In general, the flattening mechanism of the utility model has the advantages of high leveling efficiency, good quality, and avoidance of wheel marks and footprints. The second roller is located in front of the first roller. The rolling of the second roller can achieve preliminary flattening of the raised sand and gravel on the concrete surface. The rolling of the first roller can further ensure the flatness of the concrete surface in the expansion joint anchoring area. The first motor drives the first roller to roll, so that the device moves forward as a whole, avoiding footprints caused by manual pushing and wheel marks caused by wheel rolling, and adapting to the structural characteristics of the narrow width and long length of the concrete in the expansion joint anchoring area. The flattening mechanism of the utility model has the advantages of reducing mechanical loss and improving the quality of flattening and finishing. The front and rear sliding of the sliding component drives the front and rear rubbing of the flattening plate, replacing the vibration mechanism of the traditional flattening device, reducing mechanical loss; through the high-speed rotation of the grinding disc, the concrete surface is flattened and finished in one, significantly improving the flattening quality. The transmission assembly drives the sliding assembly to drive the trowel plate to slide forward and backward along the longitudinal direction of the shell, and at the same time drives the grinding disc assembly to rotate and smoothen, ensuring that the trowel plate and the grinding disc can maintain coordination during work, improving the smoothing efficiency and achieving a more uniform smoothing effect. In addition, the secondary rolling of the flattening mechanism can avoid the impact of the grinding disc and the raised sand and gravel on the surface, further reducing mechanical loss.

[0043] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A device for leveling concrete in the anchorage area of ​​a bridge expansion joint, characterized in that: It comprises a shell with an open bottom, and a smoothing mechanism and a flattening mechanism are arranged in the shell; The smoothing mechanism includes sliding assemblies fixed on both sides of the housing, a smoothing plate fixed to the bottom of the sliding assemblies, a transmission assembly rotatably connected between the two sliding assemblies, and a grinding disc assembly rotatably connected to the transmission assembly. The sliding assemblies are driven by the transmission assembly to drive the smoothing plate to slide forward and backward along the longitudinal direction of the housing, and the grinding disc assembly is driven to rotate and smooth at the same time. The flattening mechanism includes a driving assembly fixed on both sides of the shell, the driving assembly includes a first connecting plate fixed on the inner wall of the shell, a transverse support rod is fixed below the first connecting plate, a first motor is provided between the first connecting plate and the transverse support rod, first rollers are rotatably connected to both ends below the transverse support rod, and an output end of the first motor is rotatably connected to one end of the first roller; The flattening mechanism also includes a driven assembly fixed on both sides of the shell, the driven assembly includes a second connecting plate fixed on the inner wall of the shell, and the lower ends of the second connecting plate are rotatably connected with a second roller for initially flattening concrete, and the second roller is located in front of the first roller.

2. A device for leveling concrete in the anchorage area of ​​a bridge expansion joint according to claim 1, characterized in that: The transmission assembly includes a third connecting plate fixed on the inner wall of the shell, a second motor is fixed on the third connecting plate, a first rotating shaft is provided above the third connecting plate, both ends of the first rotating shaft are respectively rotatably connected to the two sliding assemblies, a first gear is provided on the first rotating shaft, a second rotating shaft is rotatably connected between the second motor and the grinding disc assembly, and the first gear and the second rotating shaft are respectively meshed and connected with the output end of the second motor.

3. A device for leveling concrete in the anchorage area of ​​a bridge expansion joint according to claim 2, characterized in that: The output end of the second motor includes a transmission gear and an end gear. The end gear is located outside the transmission gear. The transmission gear is meshed and connected with the first gear, and the end gear is meshed and connected with the second rotating shaft.

4. A smoothing device for concrete in the anchorage area of ​​a bridge expansion joint according to claim 1 or 2, characterized in that: The sliding assembly includes a sliding rail fixed to the inner wall of the shell, a sliding frame slidably connected to the sliding rail, and a sliding plate arranged in the sliding frame for sliding up and down. The bottom of the sliding frame is fixedly connected to the trowel plate. The sliding plate is provided with a strip groove, and a gear column platform is provided in the strip groove. An annular track for the displacement of the second rotating shaft is formed between the strip groove and the gear column platform. A plurality of gear columns are arranged at certain intervals on the gear column platform. An end gear meshing with the gear column is provided on the first rotating shaft. Through the meshing of the end gear and the gear column, the first rotating shaft can move in the annular track to drive the sliding plate to slide up and down in the sliding frame, and at the same time drive the sliding frame to slide back and forth on the sliding rail.

5. The device for leveling concrete in the anchorage area of ​​a bridge expansion joint according to claim 2, characterized in that: The grinding wheel assembly includes a fourth connecting plate fixed to the inner wall of the shell and a third rotating shaft vertically passing through the fourth connecting plate. The upper end of the third rotating shaft has a second gear, which is meshed and connected to the second rotating shaft. The lower end of the third rotating shaft has a grinding wheel for rotating and smoothing the concrete in the anchor area of ​​the bridge expansion joint.

6. A device for leveling concrete in the anchorage area of ​​a bridge expansion joint according to claim 5, characterized in that: The grinding disc comprises a connecting block and a plurality of grinding plates, wherein the connecting block is fixedly connected to the fourth rotating shaft, and the plurality of grinding plates are circumferentially arranged on the connecting block at certain intervals.

7. The device for leveling concrete in the anchorage area of ​​a bridge expansion joint according to claim 1, characterized in that: The top of the shell is provided with a handle frame and a controller, and the first motor and the second motor are respectively connected to the controller circuit.

8. The device for leveling concrete in the anchorage area of ​​a bridge expansion joint according to claim 1, characterized in that: The output end of the first motor is provided with a rotating rod, and the rotating rod is rotatably connected with one end of the first roller through a transmission belt.

9. The device for leveling concrete in the anchorage area of ​​a bridge expansion joint according to claim 1, characterized in that: The driving assembly is located between the sliding assembly and the grinding disc assembly.

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