CN219342762U - Rear-mounted paver and cement paver - Google Patents

Abstract

The utility model provides a rear-mounted paving assembly and a cement paving machine, which relate to the technical field of cement construction equipment and comprise the following components: a main bracket, a left trowelling frame and a right trowelling frame; the main bracket is provided with a plurality of guide sleeves which are in sliding connection with the left trowelling rack and a plurality of guide sleeves which are in sliding connection with the right trowelling rack; the left trowelling frame and the right trowelling frame comprise end plates, a frame body, a sliding rod and a trowelling plate, wherein the end plates are arranged at two ends of the structure; the sliding rod is embedded in the guide sleeve of the main bracket and forms sliding fit with the corresponding guide sleeve; and a driving element is arranged between the main support and the left trowelling support and used for driving the left trowelling support to slide left and right relative to the main support. The rear paving frame provided by the application can be adjusted in a telescopic way, and meanwhile, has good structural strength.

Description

Rear-mounted paver and cement paver

Technical Field

The application relates to the technical field of cement construction equipment, in particular to a rear-mounted paving component and a cement paving machine.

Background

The cement paver is a construction machine which spreads the cement concrete mixed along the roadbed according to the requirements of preset thickness, width and the like, and then completes the paving of the cement pavement through the steps of compaction, trowelling and the like.

The paving frame is one of the common devices of the working machines such as a paver and is mainly used for paving road surfaces. In order to increase the spreading work width, in some existing paver structures, the spreading frame is designed as a telescopic structure with an adjustable work width so as to adjust the construction width during the construction process. Because the width of the spreading frame is adjustable, another problem is brought about, and because of the addition of the adjustable structure, the whole mechanical property of the spreading frame is weakened. As the adjustable range increases, the strength problem of the paving frame becomes increasingly apparent. In addition, some telescopic paving frame structures are not only reduced in strength, but also more complicated in structure.

Disclosure of Invention

The technical problem to be solved by the application is to provide a rear-mounted paving assembly and a cement paver aiming at the defects in the prior art.

A rear paving assembly comprising: the left trowelling frame is positioned at the left side of the main bracket, and the right trowelling frame is positioned at the right side of the main bracket; the main support is provided with a plurality of guide sleeves which are in sliding connection with the left trowelling rack and a plurality of guide sleeves which are in sliding connection with the right trowelling rack;

the left trowelling rack and the right trowelling rack comprise the following structures: the end plates are positioned at two ends, a frame body and a sliding rod are positioned between the end plates at two ends, and a trowelling plate is arranged at the bottom of the frame body; the sliding rod is embedded in the guide sleeve of the main bracket and forms sliding fit with the corresponding guide sleeve;

a driving element is arranged between the main support and the left trowelling support and used for driving the left trowelling support to slide left and right relative to the main support; and a driving element is arranged between the main support and the right trowelling frame and used for driving the right trowelling frame to slide left and right relative to the main support.

In an optional technical scheme, the main bracket is also provided with a plurality of guide posts which are used for being in sliding connection with the left trowelling frame and a plurality of guide posts which are used for being in sliding connection with the right trowelling frame;

the left trowelling frame and the right trowelling frame are further provided with sliding guide holes capable of sliding along the guide posts.

In an alternative embodiment, the sliding guide holes are provided on the corresponding end plate.

In an optional technical scheme, a middle trowelling frame is also integrated on the main support; the bottom of the middle trowelling frame is provided with a trowelling plate.

In an optional technical solution, the method further includes: the spiral material distributing mechanism is arranged on the main bracket;

the spiral feed mechanism comprises a left spiral feed mechanism corresponding to the left trowelling frame and a right spiral feed mechanism corresponding to the right trowelling frame.

In an alternative technical scheme, the device further comprises a first vibrating mechanism arranged on the main bracket; the first vibrating mechanism is arranged between the left trowelling frame and the left spiral material distributing mechanism and between the right trowelling frame and the right spiral material distributing mechanism;

the first vibrating mechanism comprises a rotating shaft, a plurality of vibrating rods arranged on the rotating shaft and a power element used for driving the rotating shaft.

In an optional technical scheme, the spiral structure of the spiral material distributing mechanism is formed by splicing multiple sections, and the sections of the structure are detachably connected together;

the rotating shaft of the first vibrating mechanism is formed by splicing multiple sections, and all the sections of structures are detachably connected together.

In an optional technical scheme, the left trowelling frame and the right trowelling frame are connected to the main support in a front-back staggered manner.

In an optional technical scheme, the left trowelling frame and/or the right trowelling frame are formed by splicing multiple sections of structures, and the sections of structures are detachably connected together.

In another aspect, the present application also provides a cement paving apparatus comprising: chassis, and the rear paving component; the rear paving assembly is arranged at the tail part of the chassis.

The rear paving assembly comprises: main support, left side trowelling frame, right side trowelling frame. The left trowelling frame and the right trowelling frame are respectively arranged on two sides of the main support and are respectively connected with the main support in a sliding way. Specifically, the sliding rod of the left trowelling frame is in sliding fit with the guide sleeve of the main bracket. For the left trowelling frame, the sliding rod is arranged between the end plates at the two ends and is positioned inside the main structure of the left trowelling frame, so that the main structure of the left trowelling frame is sleeved on the main support through the sliding rod, and the rear-mounted paving frame has good structural strength.

Drawings

Fig. 1 is a schematic perspective view of a cement paving apparatus according to an embodiment of the present application.

Fig. 2 is a schematic top view of a cement paving apparatus according to an embodiment of the present application.

Fig. 3 is a schematic view showing a bottom view of the cement paving apparatus according to the embodiment of the present application.

Fig. 4 is another perspective view of a cement paving apparatus according to an embodiment of the present application.

Fig. 5 is a cross-sectional view taken along A-A in fig. 3.

FIG. 6 is a schematic view of a partial construction of a rear position of a cement paving apparatus according to an embodiment of the present application.

Fig. 7 is a schematic structural view of a rear paving assembly according to an embodiment of the present application.

Fig. 8 is a schematic structural view of the left trowelling stand and the main stand in the embodiment of the present application.

Fig. 9 is a schematic structural view of the left or right trowelling stand in the embodiment of the present application.

Fig. 10 is a schematic structural view of a main bracket in an embodiment of the present application.

Fig. 11 is a schematic structural view of a first vibrating mechanism in an embodiment of the present application.

Reference numerals:

a crawler chassis 100, a left crawler 101, a right crawler 102;

the machine frame 200, the first trowelling frame 201, the material collecting structure 202, the left material collecting plate 2021, the right material collecting plate 2022, the material distributing structure 203, the material blocking plate 2031, the V-shaped material distributing member 2032, the left material distributing plate portion 2032a, the right material distributing plate portion 2032b, the second vibrating mechanism 204, the connecting cylinder 205, the column cylinder 206, the left column cylinder 2061 and the right column cylinder 2062;

the rear paving assembly 300, the second trowelling frame 301, the left trowelling frame 3011, the right trowelling frame 3012, the middle trowelling frame 3013, the end plate 3014, the frame body 3015, the sliding rod 3016, the trowelling plate 3017, the sliding guide hole 3018, the spiral material distributing mechanism 302, the left spiral material distributing mechanism 3021, the right spiral material distributing mechanism 3022, the first vibrating mechanism 303, the rotating shaft 3031, the vibrating rod 3032, the main support 304, the guide sleeve 3041, the guide post 3042, and the driving element 305;

a material supply assembly 400, a belt conveyor 401, a hopper 402, a bin 403, a screw feed mechanism 404, a left screw feed mechanism 4041, and a right screw feed mechanism 4042.

Detailed Description

The following are specific embodiments of the present application and the technical solutions of the present application are further described with reference to the accompanying drawings, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided merely to facilitate a thorough understanding of embodiments of the present application. It will therefore be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the application. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

In addition, embodiments and features of embodiments in the present application may be combined with each other without conflict.

The embodiment of the application relates to cement paving equipment, which is used for paving cement, can be particularly used for cement paving construction of coal mine roadways, and improves the construction width of the existing cement paving machine. It should be noted that most of existing pavers are asphalt pavers, and a trowelling frame of the asphalt paver is integrally arranged at the tail of a chassis, so that the required downward pressure of cement cannot be met when the working width of the tail trowelling frame is too large. Therefore, the paving apparatus according to the present application is used for cement construction, and thus the structure of the paving apparatus cannot be fully utilized along with the structure of the asphalt paver. The cement paving apparatus provided in the present application will be specifically described with reference to the accompanying drawings.

Referring to fig. 1 to 5, the cement paving apparatus includes a crawler chassis 100, a frame 200, a rear paving assembly 300, and a material supply assembly 400. Wherein the crawler chassis 100 comprises a left crawler 101 in a left position and a right crawler 102 in a right position. The crawler chassis 100 is capable of walking movement, and a frame 200 is provided thereon. The first trowelling stand 201 is disposed at the bottom of the crawler chassis 100. The rear paving assembly 300 is arranged at the tail part of the crawler chassis 100, and the rear paving assembly 300 comprises a second trowelling rack 301 and a corresponding spiral material distributing mechanism 302; the second trowelling stand 301 extends laterally to both outer regions of the crawler chassis 100. A material supply assembly 400 is provided on the frame 200 of the crawler chassis 100, the material supply assembly 400 being adapted to receive cementitious material and to deliver it to the screw feed mechanism 302.

Specifically, the construction section of the first trowelling frame is a width region between two tracks of the track chassis, and the construction section of the second trowelling frame can cover a width region outside the two tracks of the track chassis. The material supply assembly 400 is used for conveying the stirred cement finished product back to the spiral material distributing mechanism 302 of the rear paving assembly 300, and the spiral material distributing mechanism 302 continuously and uniformly distributes cement at the front positions of the second trowelling frames 301 at the two sides. In construction, other mechanical devices spread cement materials in front of the crawler chassis 100, and the first trowelling frame 201 trowells the spread cement materials in front of the crawler chassis 100 as the crawler chassis 100 advances. The second trowelling frame 301 trowells cement materials spread by the spiral material distributing mechanism 302. The construction width section of the first trowelling stand 201 and the construction width section of the second trowelling stand 301 are overlapped with each other, covering the areas of the bottom and both outer sides of the crawler chassis 100, thereby effectively improving the construction width of the existing cement paver. In addition, the second trowelling stand 301 is mainly responsible for trowelling the areas on both outer sides of the crawler chassis 100, and occupies only a part of the total construction width, so that the rear paving assembly 300 can provide a sufficient downward force for the cement materials.

With further reference to fig. 4, in some embodiments of the present application, the cement paving apparatus further includes an aggregate structure 202 disposed at the front of the crawler 100, including a left aggregate plate 2021 and a right aggregate plate 2022; the left side collecting plate 2021 and the right side collecting plate 2022 constitute a forward V-shaped expansion port. During construction, other mechanical devices spread cement materials in front of the crawler chassis 100, along with the advancing of the crawler chassis 100, the left side material collecting plate 2021 and the right side material collecting plate 2022 form a forward V-shaped expansion opening for collecting cement materials spread in front, and materials exceeding a width range are collected in a construction range of the first trowelling frame 201, and the first trowelling frame 201 trowells the cement materials spread in front of the crawler chassis 100.

With continued reference to fig. 4, in some embodiments of the present application, the cement paving apparatus further includes a distributing structure 203 disposed at the front of the crawler 100 and between the left side aggregate plate 2021 and the right side aggregate plate 2022; the material distributing structure 203 comprises a transverse material baffle 2031 and a V-shaped material distributing member 2032 positioned at the front side of the material baffle 2031; the V-shaped distributing member 2032 includes a left distributing plate portion 2032a and a right distributing plate portion 2032b. During construction, as the crawler chassis 100 advances, the striker plate 2031 and the V-shaped distributing member 2032 can re-uniformly distribute and disperse the cement materials gathered by the aggregate structure 202. Specifically, the left and right material dividing plate parts 2032a and 2032b push the stacked materials to both sides to make the cement materials even, and then the dam plate 2031 further scrapes the materials even so that the cement materials become even more evenly so that the first trowelling frame 201 trowells the materials.

During construction, other mechanical equipment spreads cement materials in the front of the crawler chassis 100, along with the advancing of the crawler chassis 100, through the functions of the aggregate structure 202 and the material distributing structure 203, the cement materials spread in the front are folded into the construction range of the first trowelling frame 201, and are well flattened, so that the first trowelling frame 201 trowells the materials.

Referring to fig. 1-2, and 4-5, in some embodiments of the present application, a material supply assembly 400 includes a belt conveyor 401 disposed at a top position of a frame 200 of a crawler chassis 100; the belt conveyor 401 extends from the front of the crawler chassis 100 to the rear of the crawler chassis 100, and a hopper 402 is mounted at a front position of the belt conveyor 401. In construction, the cement material is poured into the hopper 402 at the front position of the belt conveyor 401, the material in the hopper 402 falls onto the belt conveyor 401, and the cement material is conveyed from the front of the crawler chassis 100 to the rear of the crawler chassis 100 along the belt conveyor 401 so as to be further conveyed to the spiral distributing mechanism 302 of the rear paving assembly 300 for paving. The application adopts the belt conveyor 401 to convey the cement material from the front part of the crawler chassis 100 to the rear part of the crawler chassis 100, and has higher conveying efficiency.

With continued reference to fig. 5 and 6, in some embodiments of the present application, the material supply assembly 400 further includes a bin 403 disposed at the rear of the belt conveyor 401, and a screw conveyor 404 mounted at the bottom of the bin 403 and capable of conveying the cement material in the bin 403 to both sides into the screw conveyor 302. When the device works, along with the running of the belt conveyor 401, cement materials are conveyed into the bin 403 at the rear part, the bin 403 is used for storing certain cement materials in a certain time, and when the quantity of the cement materials conveyed by the belt conveyor 401 and the cement materials to be paved are not matched, the bin 403 can play a role in adjustment. When the required cement materials are reduced, the conveying can be reduced, more cement materials are stored in the storage bin 403, and when the required cement materials are increased, the excessive cement materials in the storage bin 403 can be timely replenished.

The screw conveying mechanisms 404 are respectively added on two sides of the storage bin 403, so that cement materials coming out of the storage bin 403 can be directly conveyed into the screw distributing mechanism 302 for spreading, the traditional mode that the cement materials are completely pushed by gravity sliding is changed, and the conveying time from the storage bin 403 to a spreading position of the cement materials can be shortened. In addition, the spiral material conveying mechanism 404 can control the amount of paving materials, if the amount of the required materials is large, the spiral material conveying mechanism 404 can accelerate to operate, and if the amount of the required materials is small, the operation speed of the spiral material conveying mechanism 404 is reduced. Meanwhile, the spiral conveying mechanism 404 can also realize secondary stirring of cement materials, so that the quality of raw materials for paving cement concrete is improved.

With continued reference to fig. 1-7, in some embodiments of the present application, the second trowelling stand 301 includes a left side trowelling stand 3011 and a right side trowelling stand 3012; wherein the left trowelling shelf 3011 extends leftward to an outer region of the crawler chassis 100, and the right trowelling shelf 3012 extends rightward to an outer region of the crawler chassis 100. The screw feed mechanism 302 includes a left screw feed mechanism 3021 corresponding to the left trowelling stand 3011, and a right screw feed mechanism 3022 corresponding to the right trowelling stand 3012. The screw feeding mechanism 404 includes a left screw feeding mechanism 4041 for feeding the cement material in the bin to the left into the left screw distributing mechanism 3021, and a right screw feeding mechanism 4042 for feeding the cement material in the bin to the right into the right screw distributing mechanism 3022.

Specifically, the belt conveyor 401 conveys cement materials into the silo 403, the cement materials in the silo 403 are conveyed to the left side through the left side screw conveying mechanism 4041 into the left side screw distributing mechanism 3021, and the left side screw distributing mechanism 3021 is used for spreading cement materials in front of the left side trowelling frame 3011. Cement material in the silo 403 is also conveyed to the right through a right side screw conveyor 4042 into a right side screw divider 3022, the right side screw divider 3022 being used for spreading cement material in front of the right side trowelling stand 3012. In some specific embodiments, the left spiral feeding mechanism 3021 and the right spiral feeding mechanism 3022 may be separate actuating mechanisms, and the respective power sources may independently drive the respective spiral shafts to rotate. In other embodiments, the left side screw feed mechanism 3021 and the right side screw feed mechanism 3022 may share a screw shaft and a power source. The left spiral feed mechanism 3021 and the right spiral feed mechanism 3022 may operate independently, so that single-side paving or simultaneous paving on both sides of the crawler belt is satisfied.

Referring to fig. 3 and 7, in some embodiments of the present application, the second trowelling stand 301 further comprises a middle trowelling stand 3013 positioned between the left side trowelling stand 3011 and the right side trowelling stand 3012; the middle trowelling shelf 3013 coincides with the lateral position of the first trowelling shelf 201. The first trowelling frame 201 positioned at the bottom of the crawler chassis 100 performs a first trowelling operation, and provides a reference for the left trowelling frame 3011 and the right trowelling frame 3012 and the middle trowelling frame 3013 at the rear. Thus, when the second trowelling stand 301 trowelling construction is performed, the second trowelling stand can be in contact with the cement surface over the entire construction width, and the construction defect can be reduced.

Referring to fig. 3, rear paving assembly 300 further includes a first vibrating mechanism 303 positioned between second trowelling stand 301 and screw dispensing mechanism 302. The bottom of the crawler chassis 100 is also provided with a second vibrating mechanism 204; the second vibrating mechanism 204 is located at a position in front of the first trowelling stand 201. The first vibrating mechanism 303 and the second vibrating mechanism 204 are used for paving, lifting slurry and leveling cement concrete pavement, so that the trowelling construction of the second trowelling frame 301 is facilitated.

Referring to fig. 11, each of the first vibrating mechanism 303 and the second vibrating mechanism 204 includes a rotating shaft 3031, a plurality of vibrating bars 3032 mounted on the rotating shaft 3031, and a power element for driving the rotating shaft 3031. The power element drives the rotating shaft 3031 to reciprocate, so that the vibrating rod 3032 is inserted into the cement material downwards or withdrawn from the cement material upwards. The vibrating rod 3032 can be used for being inserted into cement materials to perform vibrating compaction, and the high-frequency and low-amplitude vibration exhaust can be performed, so that the concrete materials are more lost, and the strength of the concrete is improved.

In some embodiments of the present application, the second trowelling stand 301 can adjust the working width by telescoping, so that the same paving apparatus can achieve paving of different width pavements. The structure of rear paving assembly 300 is explained in detail below.

Referring to fig. 7-10, rear paving assembly 300 includes left and right screed frames 3011 and 3012, each of left and right screed frames 3011 and 3012 being telescopically adjustable to vary a work width.

Specifically, rear paving assembly 300 includes: a main support 304, a left trowelling stand 3011 positioned to the left of the main support 304, and a right trowelling stand 3012 positioned to the right of the main support 304. Referring to fig. 8 and 10, the main bracket 304 is provided with a plurality of guide sleeves 3041 for sliding connection with the left-side trowelling frame 3011 and a plurality of guide sleeves 3041 for sliding connection with the right-side trowelling frame 3012.

The left and right trowelling frames 3011 and 3012 include the following structures: end plates 3014 at both ends, a frame 3015 and a slide rod 3016 between the end plates 3014 at both ends, a screed plate 3017 provided at the bottom of the frame 3015; the sliding rod 3016 is embedded within the guide sleeve 3041 of the main frame 304 and forms a sliding fit with the corresponding guide sleeve 3041. The screeding plate 3017 is used for screeding operations. The frame body 3015 and the slide rod 3016 are located between the end plates on both sides, and are used to construct the main structures of the left-side trowelling frame 3011 and the right-side trowelling frame 3012. Referring to fig. 8 and 9, the frame body 3015 is a structural portion between the end plates 3014 at both ends, and may include tie rods, side plate structures, and the like. The left side trowelling stand 3011 is embedded in the rear side of the main stand 304, and the right side trowelling stand 3012 is embedded in the front side of the main stand 304.

A driving element 305 is arranged between the main bracket 304 and the left trowelling frame 3011 and is used for driving the left trowelling frame 3011 to slide left and right relative to the main bracket 304; a driving element 305 is disposed between the main support 304 and the right trowelling frame 3012, and is used for driving the right trowelling frame 3012 to slide left and right relative to the main support 304. The driving element 305 may be a linear driving element such as an oil cylinder, an air cylinder, or the like. Referring specifically to fig. 10, the driving element 305 is an oil cylinder, a cylinder body is mounted on the main bracket 304, and piston rods are connected to the left and right trowelling frames 3011 and 3012 to drive the sliding adjustment of the two frames, respectively.

Left and right trowelling frames 3011 and 3012 are respectively disposed on opposite sides of the main support 304, and the left and right trowelling frames 3011 and 3012 are respectively slidably coupled to the main support 304. A plurality of guide sleeves 3041 are arranged on the main support 304 for sliding connection of the left trowelling frame 3011 and the right trowelling frame 3012. Specifically, the sliding rod 3016 of the left trowelling stand 3011 is in sliding engagement with the guide sleeve 3041 of the main stand 304. For the left trowelling frame 3011, the sliding rod 3016 is disposed between the end plates 3014 at two ends, and is located inside the main structure of the left trowelling frame 3011, so that the main structure of the left trowelling frame 3011 is sleeved on the main support 304 through the sliding rod 3016, and the rear paving frame has good structural strength. The right trowelling stand 3012 is similar and will not be described again here. Compared with the conventional telescopic link connection, the connecting structure has better connection strength.

Illustratively, a plurality of sliding rods 3016 are arranged on the left trowelling stand 3011, and the sliding rods 3016 are connected with the guide sleeves 3041 on the main stand 304 in a one-to-one sliding fit manner, so that the sliding fit between the sliding rods 3016 and the guide sleeves 3041 at a plurality of positions can effectively enhance the connection strength. In a specific technical solution, referring to fig. 8, 2 sliding rods 3016 are disposed on the left trowelling frame 3011, and the 2 sliding rods 3016 are connected to 2 guide sleeves 3041 on the main support 304 in a matching manner, where the two sliding rods 3016 and the two guide sleeves 3041 are disposed in tandem along the front-rear direction. Similarly, the right trowelling frame 3012 is cooperatively coupled to the other 2 guide sleeves 3041 on the main frame 304, and the right trowelling frame 3012 is similar and will not be described in detail herein.

Referring to fig. 8-10, in some embodiments of the present application, the main support 304 is further provided with a number of guide posts 3042 for sliding connection with the left side trowelling stand 3011 and a number of guide posts 3042 for sliding connection with the right side trowelling stand 3012. The left and right trowelling frames 3011 and 3012 are further provided with slide guide holes 3018 capable of sliding along the guide posts 3042. In addition to the guide sleeve 3041, a plurality of guide posts 3042 are provided on the main support 304 for sliding fit connection with the left and right side trowelling frames 3011 and 3012. Thus, two kinds of sliding connection relations are arranged between the main support 304 and the left trowelling frame 3011, the first kind is sliding fit connection between the sliding rod 3016 on the left trowelling frame 3011 and the guide sleeve 3041 on the main support 304, the second kind is sliding connection relation between the sliding guide hole 3018 on the left trowelling frame 3011 and the guide post 3042 on the main support 304, and the two kinds of sliding connection relations enable the main support 304 and the left trowelling frame 3011 to form a combination relation with higher strength, so that the main support is less prone to damage. The right trowelling stand 3012 is similar and will not be described again here.

Illustratively, referring to fig. 9, a slide guide hole 3018 is provided on the left trowelling stand 3011 and is disposed at a position below the slide lever 3016. Referring to fig. 10, a guide post 3042 is provided on the main support 304 and is disposed at a position below the guide sleeve 3041. It should be understood that the number and positions shown in fig. 9 and 10 are merely exemplary, and that the number and positions of the sliding guide holes 3018 and the guide posts 3042 may be specifically designed according to an actual product scheme. Referring to fig. 9, in some embodiments of the present application, one of the sliding guide holes 3018 is provided on the corresponding endplate 3014.

Referring to fig. 9, in some embodiments of the present application, a middle trowelling stand 3013 is also integrated onto the main stand 304; a trowelling plate is arranged at the bottom of the middle trowelling frame 3013. In this way, the trowelling plates of the left side trowelling frame 3011, the right side trowelling frame 3012, and the middle trowelling frame 3013 can be in contact with the cement surface over the entire construction width, thereby reducing construction defects.

Referring to fig. 7, in some embodiments of the present application, rear paving assembly 300 further includes: a screw feed mechanism 302 mounted on a main frame 304; the screw feed mechanism 302 includes a left screw feed mechanism 3021 corresponding to the left trowelling stand 3011, and a right screw feed mechanism 3022 corresponding to the right trowelling stand 3012. The left side screw distributor 3021 is used to spread cement material in front of the left side trowelling shelf 3011. The right side screw feed mechanism 3022 is used to spread cement material in front of the right side trowelling stand 3012. In some specific embodiments, the left spiral feeding mechanism 3021 and the right spiral feeding mechanism 3022 may be separate actuating mechanisms, and the respective power sources may independently drive the respective spiral shafts to rotate. In other embodiments, the left side screw feed mechanism 3021 and the right side screw feed mechanism 3022 may share a screw shaft and a power source. The left spiral feed mechanism 3021 and the right spiral feed mechanism 3022 may operate independently, so that single-side paving or simultaneous paving on both sides of the crawler belt is satisfied.

Referring to fig. 7, in some embodiments of the present application, rear paving assembly 300 further includes a first vibrating mechanism 303 mounted on main support 304; the first vibrating mechanism 303 is arranged between the left trowelling frame 3011 and the left spiral material distributing mechanism 3021, and between the right trowelling frame 3012 and the right spiral material distributing mechanism 3022; the first vibrating mechanism 303 includes a rotating shaft 3031, a plurality of vibrating bars 3032 mounted on the rotating shaft 3031, and a power element for driving the rotating shaft 3031. The description of the previous section may be referred to for the first vibrating mechanism 303 on the rear paving assembly 300, and the description is omitted here.

Referring to fig. 6 and 7, in some embodiments of the present application, the spiral structure of the spiral splitting mechanism 302 is formed by splicing multiple sections, and the sections are detachably connected together; the rotating shaft 3031 of the first vibrating mechanism 303 is formed by splicing multiple sections, and the sections of structures are detachably connected together. In this way, the spiral material distributing mechanism 302 and the first vibrating mechanism 303 can be spliced and assembled according to the actual construction width, so that the actual construction width requirement is met. Similarly, in some embodiments, the left trowelling stand 3011 and/or the right trowelling stand 3012 are formed from multiple sections of structures that are detachably connected together. For the left trowelling frame 3011 and/or the right trowelling frame 3012, besides being capable of telescopically adjusting and controlling the construction width, the construction width can be controlled by splicing, assembling and adjusting the construction width. For example, when the length of the left trowelling stand 3011 is too long, the length may be shortened by removing the end segments, and conversely, adding the segments to lengthen the length.

In some embodiments of the present application, left and right trowelling frames 3011 and 3012 are coupled to main support 304 in a back-and-forth offset. Illustratively, referring to FIG. 6, a left side trowelling stand 3011 is embedded in the rear side of the main stand 304 and a right side trowelling stand 3012 is embedded in the front side of the main stand 304. The left and right trowelling frames 3011 and 3012 are offset back and forth to allow more sliding space.

Embodiments of the present application also provide a cement paving apparatus including the above rear paving assembly 300. Specifically, the cement paving apparatus includes a crawler chassis 100, a frame 200, a rear paving assembly 300, and a material supply assembly 400. Rear paving assembly 300 includes: a main support 304, a left trowelling stand 3011, a right trowelling stand 3012. Left and right trowelling frames 3011 and 3012 are respectively disposed on opposite sides of the main support 304, and the left and right trowelling frames 3011 and 3012 are respectively slidably coupled to the main support 304. Specifically, the sliding rod 3016 of the left trowelling stand 3011 is in sliding engagement with the guide sleeve 3041 of the main stand 304. For the left trowelling frame 3011, the sliding rod 3016 is disposed between the end plates 3014 at two ends, and is located inside the main structure of the left trowelling frame 3011, so that the main structure of the left trowelling frame 3011 is sleeved on the main support 304 through the sliding rod 3016, and the rear paving frame has good structural strength. The detailed description of rear paving assembly 300 may be found in the previous section and will not be repeated here.

The trowelling frame of the paver realizes automatic leveling through a leveling system, the working performance of the leveling system plays a decisive role in the paving quality of the pavement, and the leveling system is an important component in the working system of the paver. The existing paver only performs trowelling operation through the rear trowelling frame, and the leveling system only levels the rear trowelling frame. The technical scheme of the application improves the related structure of the leveling system of the paving equipment to a certain extent, and the specific description is given below with reference to the accompanying drawings.

Referring to fig. 5, embodiments of the present application also provide a paving apparatus with a leveling system involving crawler chassis 100, frame 200, and rear paving assembly 300. Wherein the crawler chassis 100 has a left crawler 101 in a left position and a right crawler 102 in a right position. A frame 200 is located above the crawler chassis 100, on which a first trowelling stand 201 and a leveling system are provided. A rear paving assembly 300 is disposed at the rear of the crawler 100 and includes a second trowelling stand 301. A hinged relationship allowing the rear paving assembly 300 to be adjusted in a vertical rotation manner is provided between the rear paving assembly 300 and the frame 200; a plurality of connecting cylinders 205 are also arranged between the rear paving assembly 300 and the frame 200; one end of the connecting cylinder 205 is hinged to the rear paving assembly 300, and the other end is hinged to the frame 200.

Further, the cement paving equipment in the embodiment of the application adopts the double-crawler-type walking chassis, the length of the crawler is about 4 meters, a preliminary filtering effect can be achieved, and the disturbance of the unevenness of the road surface is reduced.

In the present embodiment, the paving apparatus has a first trowelling stand 201 and a second trowelling stand 301; a first trowelling stand 201 is provided on the frame 200 and a second trowelling stand 301 is provided on the rear paving assembly 300. A leveling system is disposed on the frame 200 for implementing automated leveling of the first trowelling stand. The application is through connecting hydro-cylinder 205 with rearmounted subassembly 300 that paves and frame 200 rigid connection together, and rearmounted second trowelling-up frame 301 can realize automatic leveling with the help of the rigid connection between the frame 200, and consequently, first trowelling-up frame 201 and second trowelling-up frame 301 realize the leveling through same set of system of making level. In addition, the technical scheme of this application is through connecting hydro-cylinder 205 with rearmounted subassembly 300 that paves and frame 200 rigid connection together, and when the operation, rearmounted subassembly 300 forms a atress whole with frame 200, pushes down the cement material of bottom to the lower pressure of subassembly 300 is paved to the rearmounted when improving the operation, satisfies the demand of cement material to the lower pressure more easily. In some cases, connecting cylinder 205 may also actively adjust the relative position between rear paving assembly 300 and frame 200.

When the cement paver is used for paving, the final forming of the road surface height is finished through the trowelling plate of the paver, in the embodiment of the application, the floating trowelling plate is not adopted by the paving equipment, but is fixedly connected with the machine frame, and the whole machine frame floats up and down, so that the concrete can be trowelled by the self weight of the paver.

Referring to fig. 1 and 2, in some embodiments of the present application, a frame 200 is coupled to the crawler chassis 100 by a plurality of column cylinders 206; the plurality of column cylinders 206 can be telescopically adjusted to achieve leveling of the paving operation. In a specific example, the column cylinder 206 includes: two left column cylinders 2061 connected to the left crawler 101, and two right column cylinders 2062 connected to the right crawler 102; the two left side column cylinders 2061 are in one-to-one correspondence with the front-to-rear positions of the two right side column cylinders 2062.

In some embodiments of the present application, the cylinder body of the column cylinder 206 is connected to the frame 200 and the piston rod is connected to the crawler chassis 100. The four stand columns of the stand 200 are respectively fixed with the track shoes on two sides, the stand columns of the stand are respectively independent, the connecting part structure is a piston type hydraulic cylinder, and the four stand column oil cylinders can only move up and down.

When the paving apparatus performs a paving operation, the change in the height of the road surface may cause the change in the crawler chassis 100, and thus the up-and-down movement of the structure of the frame 200, and the height of the road surface formed by the first trowelling frame 201 integrally fixed with the frame 200 may be uneven. Therefore, the leveling system needs to find the height change of the screeding plate caused by the pavement change in time during paving construction, and the height of each upright post oil cylinder of the frame is quickly and stably adjusted through calculation and analysis. The first trowelling stand 201 and the second trowelling stand 301 compact and trowelle the concrete layer by the dead weight of the paver, and if the trowelling plate position is controlled to be always at the designed paving height in the figure, the cement pavement with higher flatness can be obtained.

Further, a first trowelling stand 201 is disposed at the bottom of the crawler chassis 100 and is located between the left crawler 101 and the right crawler 102; the first trowelling stand 201 extends laterally to both outer regions of the crawler chassis 100. The construction width section of the first trowelling stand 201 and the construction width section of the second trowelling stand 301 are overlapped with each other, covering the areas of the bottom and both outer sides of the crawler chassis 100, thereby effectively improving the construction width of the existing cement paver.

Referring to fig. 5, a connecting ram 205 between rear paving assembly 300 and frame 200 is disposed above hinge point k 1. Connecting cylinder 205 secures rear paving assembly 300 to frame 200 from hinge point k1 such that rear paving assembly 300 forms an integral structure with frame 200. With continued reference to fig. 2 and 6, in some embodiments of the present application, the number of connecting cylinders 205 between the rear paving assembly 300 and the frame 200 is plural and is laterally side-by-side. Thus, the connection between the rear paving assembly 300 and the frame 200 is more stable and reliable, and the stress is more balanced. In a specific example, the number of connecting cylinders 205 between rear paving assembly 300 and frame 200 is two.

In some embodiments of the present application, a cylinder body of the connecting cylinder 205 is connected to the frame 200 and a piston rod is connected to the rear paving assembly 300.

In some embodiments of the present application, rear paving assembly 300 further includes a screw dispensing mechanism 302 and a first vibrating mechanism 303 that are mated to the second trowelling stand 301. The description of the previous section may be referred to for the first vibrating mechanism 303 on the rear paving assembly 300, and the description is omitted here.

In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the present application. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (10)

1. A rear-mounted paving assembly, comprising: the left trowelling frame is positioned at the left side of the main bracket, and the right trowelling frame is positioned at the right side of the main bracket; the main support is provided with a plurality of guide sleeves which are in sliding connection with the left trowelling rack and a plurality of guide sleeves which are in sliding connection with the right trowelling rack;

the left trowelling rack and the right trowelling rack comprise the following structures: the end plates are positioned at two ends, a frame body and a sliding rod are positioned between the end plates at two ends, and a trowelling plate is arranged at the bottom of the frame body; the sliding rod is embedded in the guide sleeve of the main bracket and forms sliding fit with the corresponding guide sleeve;

a driving element is arranged between the main support and the left trowelling support and used for driving the left trowelling support to slide left and right relative to the main support; and a driving element is arranged between the main support and the right trowelling frame and used for driving the right trowelling frame to slide left and right relative to the main support.

2. The rear paving assembly of claim 1, wherein the main bracket is further provided with a plurality of guide posts for sliding connection with the left trowelling rack and a plurality of guide posts for sliding connection with the right trowelling rack;

the left trowelling frame and the right trowelling frame are further provided with sliding guide holes capable of sliding along the guide posts.

3. The rear paving assembly of claim 2, wherein the sliding guide holes are provided on the corresponding end plates.

4. The rear paving assembly of claim 1, wherein the main support further has a middle trowelling stand integrated thereon; the bottom of the middle trowelling frame is provided with a trowelling plate.

5. The rear paving assembly of claim 1, further comprising: the spiral material distributing mechanism is arranged on the main bracket;

the spiral feed mechanism comprises a left spiral feed mechanism corresponding to the left trowelling frame and a right spiral feed mechanism corresponding to the right trowelling frame.

6. The rear paving assembly of claim 5, further comprising a first vibrating mechanism mounted on the main support; the first vibrating mechanism is arranged between the left trowelling frame and the left spiral material distributing mechanism and between the right trowelling frame and the right spiral material distributing mechanism;

the first vibrating mechanism comprises a rotating shaft, a plurality of vibrating rods arranged on the rotating shaft and a power element used for driving the rotating shaft.

7. The rear paving assembly of claim 6, wherein the spiral structure of the spiral material dividing mechanism is formed by splicing multiple sections, and the sections are detachably connected together;

the rotating shaft of the first vibrating mechanism is formed by splicing multiple sections, and all the sections of structures are detachably connected together.

8. The rear paving assembly of claim 1, wherein the left trowelling rack and the right trowelling rack are connected to the main support in a front-to-back offset.

9. The rear paving assembly of claim 1, wherein the left trowelling stand and/or the right trowelling stand are spliced from a plurality of segments and the segments are detachably connected together.

10. A cement paver, comprising: chassis, a rear paving assembly according to any of claims 1-9; the rear paving assembly is arranged at the tail part of the chassis.

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