A paver and a paver

Abstract

The present invention belongs to the technical field of road construction, and discloses a paver and a paver. The paver includes a frame, a driving mechanism and a paving mechanism. The clutch limits the rotation of the third paving section relative to the sliding frame, and the first paving section rotates under the drive of the driving mechanism. Combined with the threaded cooperation between the first paving section and the second paving section, the sliding frame, the second paving section and the third paving section can all move in a direction away from the fixed frame to adjust the length of the paving mechanism, which is suitable for asphalt paving on roads of different widths. After the length of the paving mechanism is adjusted, the clutch releases the rotation restriction on the third paving section, so that the third paving section can rotate synchronously with the first paving section and the second paving section to pave the asphalt. At the same time, a heating fluid is introduced into the heating chamber enclosed between the second end of the first paving section and the slot to heat the asphalt at the edge of the road to ensure the uniformity of the asphalt paving at the edge.

Description

Technical Field

[0001] The present invention relates to the technical field of road construction, and in particular to a paver and a paver. Background Art

[0002] Asphalt paver is a kind of equipment used in road construction, which is mainly used to evenly spread hot asphalt mixture on the road surface to build a smooth and durable road.

[0003] When the asphalt paver in the prior art is in use, the distance between the baffles on both sides can be adjusted according to the width of the road surface, thereby controlling the paving width. Since the spiral length of the spiral paver is fixed, when the distance between the two baffles is too large, that is, when the road width is too large, the asphalt flow at the paving edge is likely to be uneven. At the same time, the temperature of the asphalt flowing to the edge will decrease, which will also affect the paving effect at the edge. Summary of the invention

[0004] The object of the present invention is to provide a paver and a paver, which can ensure the paving uniformity of asphalt at the edge and improve the road paving effect.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] In one aspect, a paving machine is provided, comprising:

[0007] The frame body comprises a fixed frame and two sliding frames respectively arranged on both sides of the fixed frame, and the distance between the sliding frames and the fixed frame is adjustable;

[0008] A driving mechanism is fixed on the fixing frame;

[0009] The paving mechanism has spiral blades arranged on the outer peripheral wall, and the paving mechanism comprises:

[0010] A first paving section, a first end of which is connected to an output end of the driving mechanism, the driving mechanism is capable of driving the first paving section to rotate, and an outer circumference of the second end is provided with an external thread;

[0011] A second paving section is sleeved on the outer circumference of the second end of the first paving section and is threadedly connected;

[0012] The third paving section is rotatably arranged on the sliding frame and fixedly connected to the second paving section; the sliding frame is provided with a clutch, and the clutch can be selectively connected to the third paving section for controlling whether the third paving section can rotate relative to the sliding frame; the third paving section is provided with a slot, and the second end of the first paving section passes through the second paving section and extends into the slot; the second end of the first paving section and the slot enclose a heating chamber, and a heating fluid flows in the heating chamber.

[0013] As an optional solution of the paving device, the paving mechanism further includes a clamping assembly, and the clamping assembly includes:

[0014] A piston block is slidably disposed in the heating chamber;

[0015] A pawl is slidably arranged on the piston block along the radial direction of the piston block, and the pawl has a first state in which it is completely retracted into the interior of the piston block and a second state in which it at least partially extends out of the piston block. A plurality of annular grooves are arranged on the inner wall of the slot at intervals in the horizontal direction, and the pawl in the second state can be clamped in the annular groove.

[0016] As an optional solution for the paver, the clamping assembly further includes a slider;

[0017] The piston block is provided with an axial slide groove and a radial slide groove that are interconnected, the piston block is provided with an air vent at one end facing the first paving section, the second paving section is provided with an air guide channel that is connected to the external environment, and the air vent is connected to the air guide channel;

[0018] The slider is slidably disposed in the axial sliding groove, and a guide block is disposed on the slider;

[0019] The pawl is slidably disposed in the radial sliding groove, a guide inclined surface is disposed on the pawl, and the guide block is slidably abutted against the guide inclined surface.

[0020] As an optional solution for the spreader, the clamping assembly also includes an elastic member, and a pawl is provided on both sides of the sliding block in the radial direction. The elastic member is located in the radial sliding groove and connected between the two pawls.

[0021] As an optional solution for the spreader, a first joint is provided on the sliding frame, the second paving section is rotatably passed through the first joint, and a conduit communicating with the outside is provided on the first joint, and the conduit is connected to the air guide channel.

[0022] As an optional solution for the spreader, a liquid inlet is provided on the side wall of the third spreading section, and a telescopic tube is provided in the heating chamber. One end of the telescopic tube is fixed to the side wall of the heating chamber and connected to the liquid inlet, and the other end is connected to the piston block and connected to the heating chamber.

[0023] As an optional solution for the spreader, a second joint is provided on the sliding frame, the third spreading section is rotatably provided on the second joint, and the second joint is provided with a liquid inlet pipe and a liquid outlet pipe connected to the heating chamber.

[0024] As an optional solution for the paver, the spiral blades on the outer peripheral walls of the first paving section and the second paving section fit each other, and the thread pitch between the first paving section and the second paving section is the same as the pitch of the spiral blades.

[0025] As an optional solution for the paver, a hydraulic rod is connected between the fixed frame and the sliding frame.

[0026] On the other hand, a paving machine is provided, comprising a vehicle body and any of the above-mentioned paving machines, wherein the fixing frame is connected to the vehicle body.

[0027] Beneficial effects of the present invention:

[0028] The present invention provides a paver and a paver. Before paving asphalt, the clutch limits the rotation of the third paving section relative to the sliding frame, and the first paving section rotates under the drive of the driving mechanism. Combined with the threaded cooperation between the first paving section and the second paving section, the sliding frame, the second paving section and the third paving section are all moved in a direction away from the fixed frame, and the length of the paving mechanism is adjusted to be suitable for asphalt paving on roads of different widths. After the length of the paving mechanism is adjusted, the clutch releases the rotation restriction on the third paving section, so that the third paving section can rotate synchronously with the first paving section and the second paving section to pave the asphalt. At the same time, a heating fluid is introduced into the heating chamber enclosed between the second end of the first paving section and the slot to heat the asphalt at the edge of the road to ensure the uniformity of the asphalt paving at the edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an overall schematic diagram of a paver provided in a specific embodiment of the present invention;

[0030] Figure 2 is a top view of a paver provided in a specific embodiment of the present invention;

[0031] Figure 3 yes Figure 2 AA section view of the middle part;

[0032] Figure 4 It is a schematic diagram of a clamping assembly provided in a specific embodiment of the present invention;

[0033] Figure 5 It is a schematic diagram of a clamping assembly and a telescopic tube provided in a specific embodiment of the present invention;

[0034] Figure 6 is a cross-sectional view of a clamping assembly and a telescopic tube provided in a specific embodiment of the present invention;

[0035] Figure 7It is a schematic diagram of the clamping assembly provided in the specific implementation example of the present invention, omitting the piston block;

[0036] Figure 8 The structure of the paver provided by the specific embodiment of the present invention is schematically shown in FIG. Figure 1 ;

[0037] Fig. 9 The structure of the paver provided by the specific embodiment of the present invention is schematically shown in FIG. Figure 2 .

[0038] In the figure:

[0039] 100. vehicle body; 101. leveling device; 102. discharge port;

[0040] 1. Frame;

[0041] 11. Fixed frame;

[0042] 12. Sliding rack;

[0043] 120. Clutch;

[0044] 121. a first connector; 1211. a catheter;

[0045] 122, second joint; 1221, liquid inlet pipe; 1222, liquid outlet pipe;

[0046] 13. Hydraulic rod;

[0047] 2. Driving mechanism;

[0048] 3. Paving mechanism;

[0049] 31. The first paving section;

[0050] 32. Second paving section; 321. Air guide channel;

[0051] 33. The third paving section; 330. A heating chamber; 331. An annular groove; 332. A telescopic tube;

[0052] 34. Snap-on assembly;

[0053] 341, piston block; 3411, axial slide groove; 3412, radial slide groove; 3413, vent hole; 3414, groove;

[0054] 342, ratchet; 3421, guide ramp;

[0055] 343, slider; 3431, guide block;

[0056] 344. Elastic parts. DETAILED DESCRIPTION

[0057] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0058] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0060] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0061] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0062] like Figures 1 to 7As shown, this embodiment provides a paving machine, including a frame 1, a driving mechanism 2 and a paving mechanism 3. The frame 1 is configured to be connected to a vehicle body 100 of the paving machine, and the frame 1 includes a fixed frame 11 and two sliding frames 12 arranged on both sides of the fixed frame 11. The paving mechanism 3 is provided with spiral blades on its outer peripheral wall. The paving mechanism 3 includes a first paving section 31, a second paving section 32 and a third paving section 33. The first end of the first paving section 31 is connected to the output end of the driving mechanism 2. The driving mechanism 2 can drive the first paving section 31 to rotate, and the outer periphery of the first paving section 31 is provided with an external thread. The second paving section 32 is sleeved on the outer periphery of the second end of the first paving section 31 and is threadedly connected to the first paving section 31. The third paving section 33 is rotatably provided on the sliding frame 12 and is fixedly connected to the second paving section 32. The sliding frame 12 is provided with a clutch 120. The clutch 120 can be selectively connected to the third paving section 33 to control whether the third paving section 33 can rotate relative to the sliding frame 12. When the length of the paving mechanism 3 needs to be adjusted, the clutch 120 is connected to the third paving section 33 to limit the rotation of the third paving section 33. The first paving section 31 is driven by the driving mechanism 2, and combined with the threaded fit between the first paving section 31 and the second paving section 32, the sliding frame 12, the second paving section 32 and the third paving section 33 can move in a direction away from the fixed frame 11. After the length of the paving mechanism 3 is adjusted, the clutch 120 is separated from the third paving section 33, so that the third paving section 33 can rotate synchronously with the first paving section 31, and then the asphalt is paved. A slot is provided on the third paving section 33, and the second end of the first paving section 31 passes through the second paving section 32 and extends into the slot. The second end of the first paving section 31 and the slot enclose a heating chamber 330, and a heating fluid is passed through the heating chamber 330 to heat the asphalt at the edge of the road to ensure the uniformity of the asphalt paving at the edge.

[0063] First, the clutch 120 limits the rotation of the third paving section 33 relative to the sliding frame 12. Driven by the driving mechanism 2, the first paving section 31 rotates, and the sliding frame 12, the second paving section 32 and the third paving section 33 move away from the fixed frame 11 due to the threaded cooperation between the first paving section 31 and the second paving section 32 and the extension of the hydraulic rod 13, so that the paving mechanism 3 is adjusted to a suitable length, and the position of the first paving section 31 in the slot and the length of the heating chamber 330 are adjusted at the same time.

[0064] Then, a heating fluid is introduced into the heating chamber 330 to heat the asphalt at the edge of the road, thereby ensuring the uniformity of the asphalt paving at the edge of the road. The clutch 120 releases the rotation restriction on the third paving section 33 relative to the sliding frame 12, so that the second paving section 32 and the third paving section 33 rotate synchronously with the first paving section 31, thereby completing the paving of the asphalt.

[0065] For example, the driving mechanism 2 is a motor commonly used in the art. The clutch 120 is an existing device disclosed in the prior art, and the third paving section 33 and the sliding frame 12 are separated or combined according to whether there is a relative speed difference between the master and slave parts of the clutch 120. The specific structure and principle thereof refer to the prior art.

[0066] Optionally, the heating fluid is heated hot oil or hot water. For example, in this embodiment, the heating fluid is specifically selected as hot water, which has low cost and high safety. At the same time, hot water has better heat transfer efficiency at a lower temperature (below 300°C), which is conducive to saving operating energy consumption.

[0067] Alternatively, if Figure 1 As shown, a hydraulic rod 13 is connected between the fixed frame 11 and the sliding frame 12 to adjust the distance between the fixed frame 11 and the sliding frame 12. Specifically, in this embodiment, two hydraulic rods 13 are connected between each sliding frame 12 and the fixed frame 11 to improve the stability of the frame body 1 during the length adjustment process.

[0068] Optionally, refer to Figure 1 A second joint 122 is provided on the sliding frame 12, and the third paving section 33 is rotatably provided on the second joint 122. A liquid inlet pipe 1221 and a liquid outlet pipe 1222 which are connected to the heating chamber 330 are provided on the second joint 122. The end of the liquid outlet pipe 1222 away from the heating chamber 330 is connected to a suction mechanism (not shown in the figure). The heating fluid with a certain temperature enters the heating chamber 330 through the liquid inlet pipe 1221, and then is discharged from the heating chamber 330 through the liquid outlet pipe 1222 under the suction action of the suction mechanism, so as to ensure that the heating fluid in the heating chamber 330 can always heat the asphalt material at the edge of the road.

[0069] Exemplarily, the suction mechanism is an existing device such as a water pump commonly used in the art.

[0070] Optionally, a liquid inlet is provided on the side wall of the third paving section 33, and a telescopic tube 332 is provided in the heating chamber 330, one end of the telescopic tube 332 is fixedly provided on the side wall of the heating chamber 330 and is connected to the liquid inlet, and the other end is connected to the piston block 341 and is connected to the heating chamber 330. The telescopic tube 332 can be extended or shortened with the movement of the piston block 341 to adapt to the size of the heating chamber 330, so that the heating fluid can quickly reach the interior of the heating chamber 330, so that the heating fluid can fill the entire heating chamber 330.

[0071] Specifically in this embodiment, the liquid inlet pipe 1221 is connected to the liquid inlet port. The heating fluid passes through the liquid inlet pipe 1221, flows through the liquid inlet port, enters the telescopic tube 332, and finally enters the heating chamber 330.

[0072] For example, refer to Figure 5Two connecting rods are connected between the telescopic tube 332 and the piston block 341 , which ensure that the telescopic tube 332 is connected to the piston block 341 and that the heating fluid in the telescopic tube 332 can flow into the heating chamber 330 .

[0073] Optionally, continue to refer to Figure 1 The spiral blades on the outer peripheral walls of the first paving section 31 and the second paving section 32 fit each other, and the pitch of the threads between the first paving section 31 and the second paving section 32 is the same as the pitch of the spiral blades. With the above arrangement, the spiral blades that fit each other can gradually separate as the threads rotate, ensuring that the parts of the paving mechanism 3 that contact the asphalt material all have spiral blades.

[0074] Optionally, the paving mechanism 3 further includes a clamping assembly 34. Figures 5 to 7 As shown, the clamping assembly 34 includes a piston block 341 and a pawl 342. The piston block 341 is slidably disposed in the heating chamber 330. The pawl 342 is slidably disposed on the piston block 341 along the radial direction of the piston block 341, and the pawl 342 has a first state in which it is completely retracted into the piston block 341 and a second state in which it is at least partially extended out of the piston block 341. A plurality of annular clamping grooves 331 are provided on the inner wall of the slot at intervals in the horizontal direction. The pawl 342 in the second state can be clamped in the annular clamping groove 331 to further enhance the stability of the connection between the first paving section 31 and the third paving section 33.

[0075] Furthermore, the clamping assembly 34 also includes a slider 343. The piston block 341 is provided with an axial slide groove 3411 and a radial slide groove 3412 that are interconnected. The end of the piston block 341 that abuts the first paving section 31 is provided with a vent hole 3413. The second paving section 32 is provided with an air guide channel 321 that is connected to the outside. The air guide channel 321 is connected to the vent hole 3413 to ensure that the pressure on the side of the piston block 341 away from the heating chamber 330 is always atmospheric pressure. The slider 343 is slidably arranged in the axial slide groove 3411, and a guide block 3431 is arranged on the slider 343. The pawl 342 is slidably arranged in the radial slide groove 3412 along the radial direction of the piston block 341. The pawl 342 is provided with a guide slope 3421, and the guide block 3431 can slidably abut against the guide slope 3421. When the suction mechanism completely drains the heating fluid in the heating chamber 330 and the telescopic tube 332, negative pressure will be generated in the heating chamber 330, causing a pressure difference between the left and right sides of the slider 343. Under the action of the pressure difference, the slider 343 will move toward one side of the heating chamber 330, and under the guidance of the guide slope 3421, the pawl 342 will be driven to disengage from the annular groove 331, so that the pawl 342 switches from the second state to the first state, and the first paving section 31 and the third paving section 33 are released from the limit, so that the sliding frame 12, the second paving section 32 and the third paving section 33 can move in the horizontal direction.

[0076] Furthermore, the clamping assembly 34 further includes an elastic member 344, and a pawl 342 is disposed on both radial sides of the slider 343. The elastic member 344 is located in the radial slide groove 3412 and connected between the two pawls 342. Under the elastic force of the elastic member 344, the pawl 342 can be stably clamped in the corresponding annular clamping groove 331, and the pawl 342 can be prevented from being separated from the annular clamping groove 331 under the action of external force.

[0077] Specifically, Figure 4 As shown, one end of the piston block 341 abutting against the first paving section 31 is provided with a groove 3414 for abutting against the first paving section 31 to improve the abutment stability of the first paving section 31. Both sides of the groove 3414 are respectively provided with vent holes 3413 communicating with the axial sliding groove 3411.

[0078] For example, refer to Figure 5 and Figure 6 , two ratchet claws 342 are respectively arranged on both sides of the slider 343; in other embodiments, the number of ratchet claws 342 on both sides of the slider 343 can be set as needed, and is not specifically limited here. In addition, in this embodiment, the elastic member 344 is a spring commonly used in the art.

[0079] Optionally, refer to Figure 3 The sliding frame 12 is provided with a first joint 121, the first paving section 31 is rotatably arranged on the first joint 121, the first joint 121 is provided with a conduit 1211 communicating with the outside, and the conduit 1211 is connected to the air guide channel 321. The above arrangement ensures that the air guide channel 321 is always connected with the outside atmosphere, and can also prevent asphalt from entering the air guide channel 321 and blocking the air guide channel 321 during the paving process.

[0080] Exemplarily, the operating process of the paver described in this embodiment is as follows: the clutch 120 limits the rotation of the third paving section 33 relative to the sliding frame 12, the first paving section 31 rotates under the drive of the driving mechanism 2, and the sliding frame 12, the second paving section 32 and the third paving section 33 are moved away from the fixed frame 11 by the threaded cooperation between the first paving section 31 and the second paving section 32 and the extension of the hydraulic rod 13, so that the paving mechanism 3 is adjusted to a suitable length.

[0081] The heating fluid enters the heating chamber 330 through the liquid inlet pipe 1221, and heats the asphalt at the edge of the road to ensure the paving effect at the edge of the road. The heating fluid then flows to the liquid outlet pipe 1222 through the telescopic pipe 332 under the suction action of the suction mechanism, and is discharged from the heating chamber 330. The heating fluid in the heating chamber 330 can always heat the asphalt at the edge.

[0082] The restriction of the clutch 120 on the third paving section 33 relative to the sliding frame 12 is released, and the paving mechanism 3 is driven by the driving mechanism 2 to rotate to pave the asphalt material on the road.

[0083] When the paving device is used or the length of the paving mechanism 3 needs to be shortened, the suction mechanism is used to completely drain the heating fluid in the heating chamber 330 and the telescopic tube 332, so that a negative pressure environment is formed in the heating chamber 330. Since the end of the piston block 341 away from the heating chamber 330 is provided with a vent hole 3413, the vent hole 3413 is connected to the air guide channel 321 on the second paving section 32, and the air guide channel 321 is always connected to the outside through the conduit 1211 on the first joint 121, therefore, the pressure on the side of the piston block 341 away from the heating chamber 330 is always atmospheric pressure, and then there is a certain pressure difference on both sides of the piston block 341. Under the action of the pressure difference, the slider 343 will slide along the axial groove 3411 toward the side of the heating chamber 330, and then the pawls 342 on both sides of the slider 343 along the radial direction can slide in a direction close to each other, so that the pawls 342 are separated from the annular groove 331, and the limit of the first paving section 31 and the third paving section 33 is released. The clutch 120 limits the rotation of the third paving section 33 relative to the sliding frame 12, driving the first paving section 31 to rotate. At the same time, the hydraulic rod 13 retracts, causing the sliding frame 12, the second paving section 32 and the third paving section 33 to move toward the fixed frame 11, and the paving mechanism 3 is retracted to the required length.

[0084] On the other hand, this embodiment also provides a paving machine. Figures 8 to 9 As shown, the paver includes a vehicle body 100 and the above-mentioned paver. The paver is connected to the vehicle body 100, and a discharge port 102 is provided on the vehicle body 100. The asphalt material is discharged to the road through the discharge port 102, and then spread by the paver, and finally leveled by the leveling device 101. The paver has all the beneficial effects of the above-mentioned paver, which will not be described in detail here.

[0085] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A paver, characterized in that: include: A frame body (1) comprises a fixed frame (11) and two sliding frames (12) arranged on both sides of the fixed frame (11), wherein the distance between the sliding frames (12) and the fixed frame (11) is adjustable; A driving mechanism (2) fixedly mounted on the fixing frame (11); The paving mechanism (3) has spiral blades arranged on its outer peripheral wall, and the paving mechanism (3) comprises: A first paving segment (31), a first end of which is connected to an output end of the driving mechanism (2), the driving mechanism (2) being capable of driving the first paving segment (31) to rotate, and an outer circumference of a second end of the first paving segment (31) being provided with an external thread; A second paving section (32) is sleeved on the outer circumference of the second end of the first paving section (31) and is threadedly connected; A third paving section (33) is rotatably arranged on the sliding frame (12) and fixedly connected to the second paving section (32); a clutch (120) is arranged on the sliding frame (12), and the clutch (120) can be selectively connected to the third paving section (33) for controlling whether the third paving section (33) can rotate relative to the sliding frame (12); a slot is provided on the third paving section (33), and the second end of the first paving section (31) passes through the second paving section (32) and extends into the slot; the second end of the first paving section (31) and the slot enclose a heating chamber (330), and a heating fluid flows through the heating chamber (330); A clamping assembly (34), the clamping assembly (34) comprising: A piston block (341) is slidably disposed in the heating chamber (330), and one end of the piston block abuts against the first paving section (31); a ratchet (342) slidably disposed on the piston block (341) along the radial direction of the piston block (341), and the ratchet (342) has a first state in which it is completely retracted into the piston block (341) and a second state in which it is at least partially extended out of the piston block (341); a plurality of annular grooves (331) are provided at intervals along the horizontal direction on the inner wall of the slot, and the ratchet (342) in the second state can be clamped in the annular groove (331); A liquid inlet is provided on the side wall of the third paving section (33), and a telescopic tube (332) is provided in the heating chamber (330); one end of the telescopic tube (332) is fixed to the side wall of the heating chamber (330) and is connected to the liquid inlet, and the other end is connected to the piston block (341) and is connected to the heating chamber (330).

2. The paver according to claim 1, characterized in that: The clamping assembly (34) further includes a sliding block (343); The piston block (341) is provided with an axial sliding groove (3411) and a radial sliding groove (3412) which are connected to each other; an air vent (3413) is provided at one end of the piston block (341) which faces the first paving section (31); an air guide channel (321) connected to the external environment is provided on the second paving section (32); and the air vent (3413) is connected to the air guide channel (321); The sliding block (343) is slidably disposed in the axial sliding groove (3411), and a guide block (3431) is disposed on the sliding block (343); The ratchet pawl (342) is slidably disposed in the radial sliding groove (3412); a guide inclined surface (3421) is disposed on the ratchet pawl (342); and the guide block (3431) is slidably abutted against the guide inclined surface (3421).

3. The paver according to claim 2, characterized in that: The clamping assembly (34) further comprises an elastic member (344), and a pawl (342) is provided on both sides of the sliding block (343) in the radial direction. The elastic member (344) is located in the radial sliding groove (3412) and is connected between the two pawls (342).

4. The paver according to claim 2, characterized in that: The sliding frame (12) is provided with a first joint (121), the second paving section (32) is rotatably passed through the first joint (121), the first joint (121) is provided with a conduit (1211) connected to the outside, and the conduit (1211) is connected to the air guide channel (321).

5. The paver according to any one of claims 1 to 4, characterized in that: The sliding frame (12) is provided with a second joint (122), the third paving section (33) is rotatably arranged on the second joint (122), and the second joint (122) is provided with a liquid inlet pipe (1221) and a liquid outlet pipe (1222) which are in communication with the heating chamber (330).

6. The paver according to any one of claims 1 to 4, characterized in that: The spiral blades on the outer peripheral walls of the first paving section (31) and the second paving section (32) fit each other, and the pitch of the threads between the first paving section (31) and the second paving section (32) is the same as the pitch of the spiral blades.

7. The paver according to any one of claims 1 to 4, characterized in that: A hydraulic rod (13) is connected between the fixed frame (11) and the sliding frame (12).

8. A paver, characterized in that: It comprises a vehicle body (100) and the paver according to any one of claims 1 to 7, wherein the fixing frame (11) is connected to the vehicle body (100).

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