Cement stabilized macadam base layer laying machine

Abstract

The invention relates to the field of base layer laying, discloses a cement stabilized macadam base layer laying machine, and aims to solve the problems that macadam of different sizes needs to be classified when an existing base laying machine is used for laying macadam, and in the prior art, after the macadam is classified, large macadam is laid firstly, and then the large macadam is laid. When small gravels are used for filling, secondary laying needs to be carried out on a laying area through a laying machine, and the laying efficiency of the gravels is affected. According to the gravel paving device, after gravel is screened through the discharging piece, large gravel blocks and small gravel blocks are gradually laid, the large gravel blocks are firstly laid, then the small gravel blocks are laid according to the protruding height of the large gravel blocks to fill gaps of the large gravel blocks, and the laid gravel is smoother.

Description

Technical Field

[0001] The invention relates to the field of base layer paving, in particular to a cement stabilized crushed stone base layer paving machine. Background Art

[0002] Base layer paving refers to applying a layer of primer on the surface of the foundation or base concrete first, and then laying a layer of 0.5-1.5 mm paving asphalt mixture or cement mortar and other basic ground paving materials on it, and crushed stone needs to be added to the concrete or foundation during the construction process.

[0003] The existing patent (Announcement No.: CN107386065B) discloses a mechanical gravel paving device that can screen the particle size of gravel, including a vehicle chassis, and a roller is arranged at the rear end of the vehicle chassis. The front end of the vehicle chassis is provided with a storage box and a screen plate from top to bottom, the storage box is fixedly connected to the vehicle chassis through a storage box mounting frame, the front end of the screen plate is hinged to the vehicle chassis, the rear end of the screen plate is connected to the vehicle chassis through a vibration mechanism, and a transmission mechanism is arranged between the vibration mechanism and the roller. A waste box is arranged on the vehicle chassis at the rear end of the screen plate. The device realizes the automation of the gravel paving process, and the laid gravel layer is dense and uniform in thickness, which not only improves the work efficiency but also ensures the construction quality. In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art that have not been solved: the existing foundation paving machine needs to classify gravel of different sizes when paving gravel, and in the prior art, the gravel is usually classified, and then the large pieces of gravel are laid, and then small pieces of gravel are used to fill the gap. The paving machine needs to pave the paving area twice, which is inefficient. Summary of the invention

[0004] The purpose of the present invention is to provide a cement stabilized gravel base paving machine to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a cement stabilized gravel base paving machine, comprising a support frame, a bearing frame and a hopper, the support frame is arranged horizontally with the ground, a moving wheel is arranged at the bottom of the support frame, the bearing frame is fixedly arranged on the top of the support frame, and the bearing frame is arranged obliquely, and the hopper is fixedly arranged on the bearing frame; A screening cavity is provided in the carrier frame, the discharge end of the hopper is communicated with the screening cavity, a screening device is provided in the screening cavity, the screening device comprises a driving motor fixedly arranged on the outer wall of the carrier frame, the main shaft of the driving motor is connected with a driving rod, a rotating block is fixedly connected to the driving rod, an accommodating cavity is provided on the carrier frame, a sliding frame is slidably arranged in the accommodating cavity, elastic springs are correspondingly arranged on the inner wall of the accommodating cavity, the other ends of the two elastic springs are respectively connected to the sliding frame, a connecting frame is hingedly provided on the outer wall of the sliding frame, the rotating block is hingedly matched with the connecting frame, a screening plate is fixedly connected to the bottom of the sliding frame, and the screening plate is located in the screening cavity.

[0005] Preferably, the surface of the screen plate is provided with a plurality of openings arranged at equal intervals, a bottom plate is fixedly connected to the screening chamber below the screen plate, a discharge chamber is provided at the lower inclined end of the outer wall of the carrier frame, the screen plate is located in the discharge chamber, and the screen plate and the discharge chamber are slidably matched.

[0006] Preferably, a baffle is hingedly provided on the outer wall of the discharge chamber, and a torsion spring is provided at the hinge part between the baffle and the discharge chamber. A transmission device is also provided on the top of the support frame, and the transmission device includes a support plate fixedly provided on the top of the sliding frame, an arc groove is opened on the support plate, and a transmission rod is slidingly provided on the top of the support frame accordingly, a pressure spring is connected between the two transmission rods and the support frame, a connecting rod is fixedly connected between the two transmission rods, a pulley is provided on the connecting rod, and the pulley slides in cooperation with the arc groove.

[0007] Preferably, the transmission device also includes rotating rods which are arranged on the top of the carrier frame for corresponding rotation, and rotating gears are fixedly connected to the two rotating rods. Moving racks are fixedly arranged on the outer walls of the two transmission rods. The moving racks on the two transmission rods are respectively meshed with the rotating gears on the two rotating rods, and rotating disks are also fixedly connected to the two rotating rods.

[0008] Preferably, the supporting frame is also provided with a material removing member, the material removing member is located in the material discharging chamber, the material removing member includes a rotating rod correspondingly arranged on the outer wall of the supporting frame, a rotating disk is fixedly connected to the rotating rod, the rotating disks on the two rotating rods respectively correspond to the rotating disks on the two rotating rods, and a belt is arranged between the rotating disks and the rotating disks, one end of the rotating rod away from the rotating disk extends toward the material discharging chamber, and the end of the rotating rod extending toward the material discharging chamber is fixedly connected with the material removing disk, and a material removing frame is eccentrically arranged between the relatively arranged material removing disks.

[0009] Preferably, a blanking cavity is provided at the lower inclined end of the bottom plate, and blanking ports are arranged at equal intervals at the bottom of the blanking cavity, and a blanking piece is correspondingly arranged at each blanking port on the outer wall of the blanking cavity.

[0010] Preferably, each blanking part includes a fixed frame fixed on the outer wall of the blanking cavity, a resistance rod is slidably arranged on the fixed frame, a resistance spring is sleeved on the resistance rod, two ends of the resistance spring are respectively connected to the resistance rod and the fixed frame, a roller is rotatably arranged at the bottom of the resistance rod, a discharge plate is slidably arranged in the blanking port, the discharge plate extends in the direction of the resistance rod, a wedge-shaped block is arranged at the end of the resistance rod away from the roller, a wedge-shaped groove corresponding to the wedge-shaped block is arranged on the discharge plate, the wedge-shaped block is in contact with the wedge-shaped groove, and the end of the discharge plate away from the wedge-shaped groove is telescopically arranged.

[0011] Preferably, the blanking cavity is located behind the discharge cavity, and an auxiliary blanking plate is also provided at the blanking opening at the bottom of the blanking cavity.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, when gravel for cement is to be laid, the gravel is put into the hopper, and because the supporting frame is arranged at an angle, the gravel in the hopper will slide to the top of the screening plate in the screening chamber, and the driving rod is driven by the driving motor to rotate, and the driving rod rotates to drive the rotating block to rotate, and the rotating block rotates to pull the connecting frame to make the sliding frame move back and forth, and the sliding frame moves back and forth in the accommodating chamber to make the screening plate arranged at the bottom move back and forth, and the small pieces of gravel on the screening plate can be screened downward to the bottom plate, so that the large pieces of gravel are retained on the screening plate and the small pieces of gravel are retained on the bottom plate, which is conducive to gradually distributing and laying the large pieces of gravel and the small pieces of gravel during paving.

[0013] In the present invention, when large pieces of crushed stone on the screening plate slide into the discharge chamber, the sliding frame reciprocates in the accommodating chamber, and the arc groove on the supporting plate at the top of the sliding frame contacts the pulley on the connecting rod, so that the pulley drives the connecting rod to move up and down reciprocatingly, and the connecting rod is connected to the transmission rod, so that the transmission rod moves up and down reciprocatingly, and the moving rack on the transmission rod contacts the rotating gear on the rotating rod, so that the rotating gear rotates, and the rotating gear rotates to drive the rotating disk on the rotating rod to rotate, and the rotating disk rotates through the connected belt to rotate the rotating disk, and the rotating disk rotates When the rotating rod is rotated, the rotating rod will drive the material disc to rotate, and the material disc rack arranged on the material disc will intermittently push the large pieces of crushed stone in the discharge chamber toward the baffle plate. Under the thrust of the material disc rack, the baffle plate will expand outward so that the crushed stone can fall onto the ground to be paved, thereby realizing the material discriminating operation of the large pieces of crushed stone. Through this arrangement, when the crushed stone enters the screening chamber, the crushed stone in the discharge chamber can be pushed while the screening operation is being carried out, thereby realizing the simultaneous performance of the crushed stone screening operation and the discharging operation, thereby improving the efficiency of the crushed stone paving.

[0014] In the present invention, the fine crushed stones screened by the screening plate fall onto the bottom plate. The bottom plate is inclined so that the fine crushed stones move toward the position of the blanking cavity and accumulate. When the large pieces are crushed and laid on the ground, the continuous movement of the moving wheels at the bottom of the support frame causes the blanking piece at the bottom of the blanking cavity to contact the laid large pieces of crushed stones. After the rollers arranged at the bottom of the resistance rod contact the large pieces of crushed stones, the resistance rod is driven to lift upward. After the resistance rod is lifted, the wedge-shaped block arranged on the top of the resistance rod contacts the wedge-shaped groove on the discharge plate, thereby causing the discharge plate to open at the discharge port, and at this time, the fine crushed stones in the blanking cavity can be dropped. Processing, the higher the raised height of the large piece of crushed stone, the larger the opening of the discharge port will be opened by the resistance rod driving the discharge plate, and then when the fine crushed stone falls on the large piece of crushed stone, the paving area on the same horizontal line can be effectively paved with fine crushed stone, so that the small crushed stone can fill the gaps between the large pieces of crushed stone, which is convenient for subsequent paving processing operations. Through this setting, the crushed stone is screened and then the large and small pieces of crushed stone are gradually laid. First, the large piece of crushed stone is laid, and then the small piece of crushed stone is laid through the raised height of the large piece of crushed stone to fill the gaps between the large pieces of crushed stone, making the laid gravel more flat. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a partial three-dimensional structural cross-sectional view of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the screening device of the present invention; Figure 4 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 1 ; Figure 5 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 2 ; Figure 6 Schematic diagram of the three-dimensional structure of the blanking piece of the present invention Figure 1 ; Figure 7 Schematic diagram of the three-dimensional structure of the blanking piece of the present invention Figure 2 .

[0016] In the figure: 1, support frame; 11, moving wheel; 12, carrier frame; 13, hopper; 14, screening chamber; 2, screening device; 21, driving motor; 22, driving rod; 23, rotating block; 24, sliding frame; 25, elastic spring; 26, connecting frame; 27, screening plate; 28, bottom plate; 29, discharge chamber; 210, baffle; 3, transmission device; 31, support plate; 32, arc groove; 33, transmission rod; 34, pressure spring; 35, Connecting rod; 36, pulley; 37, rotating rod; 38, rotating gear; 39, moving rack; 310, rotating disk; 4, material shifting piece; 41, rotating rod; 42, rotating disk; 43, belt; 44, material shifting disk; 45, material shifting rack; 46, material discharge chamber; 47, material discharge port; 5, material discharge piece; 51, fixed frame; 52, resistance rod; 53, resistance spring; 54, roller; 55, discharge plate; 56, wedge-shaped block; 57, auxiliary material discharge plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figures 1 to 7 The present invention provides a technical solution: a cement stabilized gravel base paving machine, comprising a support frame 1, a bearing frame 12 and a hopper 13, wherein the support frame 1 is horizontally arranged with the ground, a moving wheel 11 is arranged at the bottom of the support frame 1, the bearing frame 12 is fixedly arranged at the top of the support frame 1, and the bearing frame 12 is inclined, and the hopper 13 is fixedly arranged on the bearing frame 12; A screening chamber 14 is provided in the carrier frame 12, and the discharge end of the hopper 13 is communicated with the screening chamber 14. A screening device 2 is provided in the screening chamber 14, and the screening device 2 includes a driving motor 21 fixedly provided on the outer wall of the carrier frame 12, and the main shaft transmission of the driving motor 21 is connected with a driving rod 22, and a rotating block 23 is fixedly connected to the driving rod 22. A accommodating chamber is provided on the carrier frame 12, and a sliding frame 24 is slidably provided in the accommodating chamber. Elastic springs 25 are correspondingly provided on the inner wall of the accommodating chamber, and the other ends of the two elastic springs 25 are respectively connected to the sliding frames 24, and a connecting frame 26 is hingedly provided on the outer wall of the sliding frame 24. The rotating block 23 is hingedly matched with the connecting frame 26, and a screening plate 27 is fixedly connected to the bottom of the sliding frame 24, and the screening plate 27 is located in the screening chamber 14.

[0019] In this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the surface of the screening plate 27 is provided with a plurality of openings arranged at equal intervals, a bottom plate 28 is fixedly connected to the screening chamber 14 below the screening plate 27, a discharge chamber 29 is provided at the lower inclined end of the outer wall of the carrier 12, the screening plate 27 is located in the discharge chamber 29, and the screening plate 27 and the discharge chamber 29 are slidably matched; When gravel for cement is paved, the gravel is put into the hopper 13. Since the supporting frame 12 is arranged at an angle, the gravel in the hopper 13 will slide to the top of the screening plate 27 in the screening chamber 14, and the driving rod 22 is driven by the driving motor 21 to rotate. The driving rod 22 rotates to drive the rotating block 23 to rotate. The rotating block 23 rotates and pulls the connecting frame 26 to make the sliding frame 24 reciprocate. The sliding frame 24 moves back and forth in the accommodating chamber to make the screening plate 27 arranged at the bottom move back and forth, and the small pieces of gravel on the screening plate 27 can be screened downward to the bottom plate 28, so that large pieces of gravel are retained on the screening plate 27 and small pieces of gravel are retained on the bottom plate 28, which is conducive to gradually distributing and paving large pieces of gravel and small pieces of gravel during paving.

[0020] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a baffle 210 is hingedly provided on the outer wall of the discharge chamber 29, and a torsion spring is provided at the hinged portion between the baffle 210 and the discharge chamber 29. A transmission device 3 is also provided on the top of the carrier 12, and the transmission device 3 includes a support plate 31 fixedly provided on the top of the sliding frame 24, and an arc groove 32 is provided on the support plate 31. A transmission rod 33 is slidably provided on the top of the carrier 12 correspondingly, and a pressure spring 34 is connected between the two transmission rods 33 and the carrier 12. A connecting rod 35 is fixedly connected between the two transmission rods 33, and a pulley 36 is provided on the connecting rod 35, and the pulley 36 is slidably matched with the arc groove 32; The transmission device 3 also includes a rotating rod 37 that is rotatably arranged on the top of the carrier 12, and the two rotating rods 37 are fixedly connected to the rotating gears 38. The outer walls of the two transmission rods 33 are fixedly provided with moving racks 39. The moving racks 39 on the two transmission rods 33 are respectively meshed with the rotating gears 38 on the two rotating rods 37. The two rotating rods 37 are also fixedly connected to the rotating disk 310. The carrier frame 12 is also provided with a material-digging member 4, and the material-digging member 4 is located in the material-discharging chamber 29. The material-digging member 4 includes a rotating rod 41 which is correspondingly rotatably arranged on the outer wall of the carrier frame 12, and a rotating disk 42 is fixedly connected to the rotating rod 41. The rotating disks 42 on the two rotating rods 41 correspond to the rotating disks 310 on the two rotating rods 37 respectively, and a belt 43 is arranged between the rotating disks 42 and the rotating disks 310. One end of the rotating rod 41 away from the rotating disk 42 extends toward the material-discharging chamber 29, and one end of the rotating rod 41 extending toward the material-discharging chamber 29 is fixedly connected with a material-digging disk 44, and a material-digging frame 45 is eccentrically arranged between the relatively arranged material-digging disks 44; When the large pieces of crushed stone on the screening plate 27 slide into the discharge chamber 29, due to the reciprocating movement of the sliding frame 24 in the accommodating chamber, the arc groove 32 on the top support plate 31 of the sliding frame 24 will contact the pulley 36 on the connecting rod 35, so that the pulley 36 drives the connecting rod 35 to move up and down reciprocatingly, and the connecting rod 35 is connected to the transmission rod 33 so that the transmission rod 33 moves up and down reciprocatingly, and the moving rack 39 on the transmission rod 33 contacts the rotating gear 38 on the rotating rod 37, so that the rotating gear 38 rotates, and the rotating gear 38 rotates to drive the rotating disk 310 on the rotating rod 37 to rotate, and the rotating disk 310 rotates through the connected belt 43 to drive the rotating disk 42 rotates, the rotating disk 42 rotates to rotate the rotating rod 41, and the rotating rod 41 will drive the material disc 44 to rotate, and the material disc rack 45 arranged on the material disc 44 will intermittently push the large pieces of crushed stone in the discharge chamber 29 toward the baffle 210, and the crushed stone will expand outward under the thrust of the material disc rack 45 so that the crushed stone can fall to the ground to be paved, thereby realizing the material discriminating operation of the large pieces of crushed stone. Through this arrangement, when the crushed stone enters the screening chamber 14, the crushed stone in the discharge chamber 29 can be pushed while the screening operation is being carried out, thereby realizing the simultaneous performance of the crushed stone screening operation and the discharge operation, thereby improving the efficiency of the crushed stone paving.

[0021] In this embodiment, Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, a blanking cavity 46 is provided at the lower end of the bottom plate 28, and blanking openings 47 are provided at equal intervals at the bottom of the blanking cavity 46. A blanking piece 5 is provided on the outer wall of the blanking cavity 46 at each blanking opening 47; Each material discharge member 5 comprises a fixing frame 51 fixedly arranged on the outer wall of the material discharge cavity 46, a resistance rod 52 is slidably arranged on the fixing frame 51, a resistance spring 53 is sleeved on the resistance rod 52, two ends of the resistance spring 53 are respectively connected with the resistance rod 52 and the fixing frame 51, a roller 54 is rotatably arranged at the bottom of the resistance rod 52, a discharge plate 55 is slidably arranged in the material discharge port 47, the discharge plate 55 extends in the direction of the resistance rod 52, a wedge-shaped block 56 is arranged at one end of the resistance rod 52 away from the roller 54, a wedge-shaped groove corresponding to the wedge-shaped block 56 is arranged on the discharge plate 55, the wedge-shaped block 56 contacts the wedge-shaped groove, and the end of the discharge plate 55 away from the wedge-shaped groove is telescopically arranged; The blanking cavity 46 is located behind the discharge cavity 29, and an auxiliary blanking plate 57 is also provided at the blanking opening 47 at the bottom of the blanking cavity 46; The fine crushed stones screened by the screening plate 27 fall onto the bottom plate 28. The bottom plate 28 is inclined so that the fine crushed stones move toward the position of the blanking cavity 46 and accumulate. When the large pieces are crushed and laid on the ground, the material discharge member 5 at the bottom of the blanking cavity 46 will contact the laid large pieces of crushed stones under the continuous movement of the moving wheel 11 at the bottom of the support frame 1. After the roller 54 at the bottom of the resistance rod 52 contacts the large pieces of crushed stones, it will drive the resistance rod 52 to lift upward. After the resistance rod 52 is lifted, the wedge-shaped block 56 at the top thereof contacts the wedge-shaped groove on the discharge plate 55, so that the discharge plate 55 is opened at the discharge port 47, and at this time, the material in the blanking cavity 46 can be discharged. 6 is dropped for material processing, and the higher the raised height of the large crushed stone is, the larger the opening of the discharge port 47 opened by the resisting rod 52 driving the discharging plate 55 will be, so that when the small crushed stone falls on the large crushed stone, the paving area on the same horizontal line can be effectively paved with the small crushed stone, so that the small crushed stone can fill the gaps between the large crushed stones, thereby facilitating the subsequent paving processing operation. Through this setting, the crushed stones are screened and the large crushed stones and the small crushed stones are gradually laid. First, the large crushed stones are laid, and then the small crushed stones are laid through the raised height of the large crushed stones to fill the gaps between the large crushed stones, so that the laid crushed stones are more flat.

[0022] The use method and advantages of the present invention: The use method of the cement stabilized gravel base paving machine, the working process is as follows: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7As shown: when gravel for cement is paved, the gravel is put into the hopper 13. Since the carrier 12 is arranged at an angle, the gravel in the hopper 13 will slide to the top of the screening plate 27 in the screening chamber 14. Driven by the driving motor 21, the driving rod 22 rotates. The driving rod 22 rotates to drive the rotating block 23 to rotate. The rotating block 23 rotates and pulls the connecting frame 26 to make the sliding frame 24 move back and forth. The sliding frame 24 moves back and forth in the accommodating chamber to make the screening plate 27 arranged at the bottom move back and forth, and the small gravel on the screening plate 27 can be screened downward to the bottom plate 28, so that the large gravel is retained on the screening plate 27 and the small gravel is retained on the bottom plate 28, so that the large gravel and the small gravel are gradually distributed and laid during paving. When the large pieces of crushed stone on the screening plate 27 slide into the discharge chamber 29, due to the reciprocating movement of the sliding frame 24 in the accommodating chamber, the arc groove 32 on the top support plate 31 of the sliding frame 24 will contact the pulley 36 on the connecting rod 35, so that the pulley 36 drives the connecting rod 35 to move up and down reciprocatingly, and the connecting rod 35 is connected to the transmission rod 33 so that the transmission rod 33 moves up and down reciprocatingly, and the moving rack 39 on the transmission rod 33 contacts the rotating gear 38 on the rotating rod 37, so that the rotating gear 38 rotates, and the rotating gear 38 rotates to drive the rotating disk 310 on the rotating rod 37 to rotate, and the rotating disk 310 rotates through the connected belt 43 to drive the rotating disk 42 rotates, the rotating disk 42 rotates to rotate the rotating rod 41, and the rotating rod 41 drives the material-dispensing disk 44 to rotate, and the material-dispensing rack 45 arranged on the material-dispensing disk 44 will intermittently push the large pieces of crushed stone in the discharge chamber 29 toward the baffle 210, and the crushed stone will expand outwards under the thrust of the material-dispensing rack 45 so that the crushed stone can fall onto the ground to be paved, thereby realizing the material-dispensing operation of the large pieces of crushed stone. Through this arrangement, when the crushed stone enters the screening chamber 14, the crushed stone in the discharge chamber 29 can be pushed while the screening operation is being performed, thereby realizing the simultaneous performance of the crushed stone screening operation and the discharge operation, thereby improving the efficiency of the crushed stone paving; The fine crushed stones screened by the screening plate 27 fall onto the bottom plate 28. The bottom plate 28 is inclined so that the fine crushed stones move toward the position of the blanking cavity 46 and accumulate. When the large pieces are crushed and laid on the ground, the material discharge member 5 at the bottom of the blanking cavity 46 will contact the laid large pieces of crushed stones under the continuous movement of the moving wheel 11 at the bottom of the support frame 1. After the roller 54 at the bottom of the resistance rod 52 contacts the large pieces of crushed stones, it will drive the resistance rod 52 to lift upward. After the resistance rod 52 is lifted, the wedge-shaped block 56 at the top thereof contacts the wedge-shaped groove on the discharge plate 55, so that the discharge plate 55 is opened at the discharge port 47, and at this time, the material in the blanking cavity 46 can be discharged. 6 is dropped for material processing, and the higher the raised height of the large crushed stone is, the larger the opening of the discharge port 47 opened by the resisting rod 52 driving the discharging plate 55 will be, so that when the small crushed stone falls on the large crushed stone, the paving area on the same horizontal line can be effectively paved with the small crushed stone, so that the small crushed stone can fill the gaps between the large crushed stones, thereby facilitating the subsequent paving processing operation. Through this setting, the crushed stones are screened and the large crushed stones and the small crushed stones are gradually laid. First, the large crushed stones are laid, and then the small crushed stones are laid through the raised height of the large crushed stones to fill the gaps between the large crushed stones, so that the laid crushed stones are more flat.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cement stabilized gravel base paving machine, characterized in that: The invention comprises a support frame (1), a bearing frame (12) and a hopper (13), wherein the support frame (1) is arranged horizontally with the ground, a moving wheel (11) is arranged at the bottom of the support frame (1), the bearing frame (12) is fixedly arranged on the top of the support frame (1), and the bearing frame (12) is arranged obliquely, and the hopper (13) is fixedly arranged on the bearing frame (12); A screening chamber (14) is provided in the carrier frame (12); a discharge end of the hopper (13) is in communication with the screening chamber (14); a screening device (2) is provided in the screening chamber (14); the screening device (2) comprises a drive motor (21) fixedly arranged on an outer wall of the carrier frame (12); a main shaft of the drive motor (21) is transmission-connected to a drive rod (22); a rotating block (23) is fixedly connected to the drive rod (22); a screening chamber (14) is provided on the carrier frame (12); A slidable sliding frame (24) is provided in the accommodating chamber, and elastic springs (25) are provided on the inner wall of the accommodating chamber respectively. The other ends of the two elastic springs (25) are respectively connected to the sliding frames (24). A connecting frame (26) is hingedly provided on the outer wall of the sliding frame (24). The rotating block (23) is hingedly matched with the connecting frame (26). A screening plate (27) is fixedly connected to the bottom of the sliding frame (24), and the screening plate (27) is located in the screening chamber (14).

2. A cement stabilized gravel base paving machine according to claim 1, characterized in that: The surface of the screening plate (27) is provided with a plurality of openings arranged at equal intervals, a bottom plate (28) is fixedly connected to the screening chamber (14) below the screening plate (27), a discharge chamber (29) is provided at the lower inclined end of the outer wall of the carrier frame (12), the screening plate (27) is located in the discharge chamber (29), and the screening plate (27) and the discharge chamber (29) are slidably matched.

3. A cement stabilized gravel base paving machine according to claim 2, characterized in that: A baffle (210) is hingedly provided on the outer wall of the discharge chamber (29), and a torsion spring is provided at the hinged portion between the baffle (210) and the discharge chamber (29). A transmission device (3) is also provided on the top of the carrier (12), and the transmission device (3) comprises a support plate (31) fixedly provided on the top of the sliding frame (24), and an arc groove (32) is provided on the support plate (31). A transmission rod (33) is slidably provided on the top of the carrier (12) correspondingly, and a pressure spring (34) is connected between the two transmission rods (33) and the carrier (12). A connecting rod (35) is fixedly connected between the two transmission rods (33), and a pulley (36) is provided on the connecting rod (35), and the pulley (36) is slidably matched with the arc groove (32).

4. A cement stabilized gravel base paving machine according to claim 3, characterized in that: The transmission device (3) further comprises a rotating rod (37) which is arranged on the top of the carrier frame (12) for corresponding rotation, the two rotating rods (37) are fixedly connected to a rotating gear (38), the outer walls of the two transmission rods (33) are fixedly provided with a moving rack (39), the moving racks (39) on the two transmission rods (33) are respectively meshed with the rotating gears (38) on the two rotating rods (37), and the two rotating rods (37) are also fixedly connected to a rotating disk (310).

5. A cement stabilized gravel base paving machine according to claim 4, characterized in that: The carrier frame (12) is also provided with a material-pickup member (4), the material-pickup member (4) being located in the material-discharging chamber (29), the material-pickup member (4) comprising a rotating rod (41) rotatably arranged on the outer wall of the carrier frame (12), a rotating disk (42) being fixedly connected to the rotating rod (41), the rotating disks (42) on the two rotating rods (41) respectively corresponding to the rotating disks (310) on the two rotating rods (37), and a belt (43) being arranged between the rotating disks (42) and the rotating disks (310), one end of the rotating rod (41) away from the rotating disk (42) extending toward the material-discharging chamber (29), one end of the rotating rod (41) extending toward the material-discharging chamber (29) being fixedly connected to the material-pickup disk (44), and a material-pickup frame (45) being eccentrically arranged between the material-pickup disks (44) arranged opposite to each other.

6. The cement-stabilized crushed stone base paving machine according to claim 2, characterized in that: A blanking cavity (46) is provided at the lower inclined end of the bottom plate (28), blanking openings (47) are arranged at equal intervals at the bottom of the blanking cavity (46), and a blanking piece (5) is correspondingly provided at each blanking opening (47) on the outer wall of the blanking cavity (46).

7. The cement-stabilized crushed stone base paving machine according to claim 6, characterized in that: Each blanking member (5) comprises a fixing frame (51) fixedly arranged on the outer wall of the blanking cavity (46); a resisting rod (52) is slidably arranged on the fixing frame (51); a resisting spring (53) is sleeved on the resisting rod (52); two ends of the resisting spring (53) are respectively connected to the resisting rod (52) and the fixing frame (51); a roller (54) is rotatably arranged at the bottom of the resisting rod (52); and the blanking port (47) is provided with a discharge plate (55) which is slidably disposed therein, the discharge plate (55) extending in the direction of the abutment rod (52), the abutment rod (52) being provided with a wedge-shaped clamping block (56) at one end away from the roller (54), the discharge plate (55) being provided with a wedge-shaped groove which is arranged corresponding to the wedge-shaped clamping block (56), the wedge-shaped clamping block (56) being in contact with the wedge-shaped groove, and the end of the discharge plate (55) which is away from the wedge-shaped groove being telescopically disposed.

8. The cement-stabilized crushed stone base paving machine according to claim 6, characterized in that: The blanking cavity (46) is located behind the discharge cavity (29), and an auxiliary blanking plate (57) is also provided at the blanking opening (47) at the bottom of the blanking cavity (46).

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