Automatic laying machine with double-roller laying function

Abstract

The invention discloses a double-roller laying automatic laying machine, two sides of one end of the bottom of the laying machine are symmetrically and fixedly provided with fixing frames, the middle parts of the two fixing frames are both provided with guide grooves, a driving motor is utilized to drive a conveying screw rod to rotate, and a moving block and a lifting roller are driven to ascend along the guide grooves; the plastic flooring surrounding the surface of the plastic flooring is pulled and lifted, and a certain allowance is reserved, so that the laying of a blank area at the bottom of the equipment after the equipment is moved to one side of a wall is met; the situation that certain laying dead angles appear below the floor leather due to the fact that the floor leather is pulled forwards to be laid at the position where the floor leather makes contact with the wall or is close to the initial position of the wall is prevented, the floor leather is pulled upwards through the lifting roller to be reserved, the equipment moves and walks after the reserved part is cut off, and then the blank below the equipment can be laid and covered; subsequent blank supplement is not needed, the workload is reduced, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of floor covering laying, in particular to an automatic laying machine for double-roller laying. Background Art

[0002] Floor leather, also known as floor varnished cloth, is a kind of floor covering material. It is a rubber plastic product and is one of the indispensable floor materials for the decoration of power distribution rooms, substations and communication rooms. The thickness is 2.0-3.0 mm. Other thicknesses can be customized according to user needs. The wear-resistant layer is generally less than or equal to 0.1 mm. The selection of floor varnished cloth products should be based on the site. For example, the size of the product should be determined according to the space of the house and the size of the place of use. At the same time, it should be noted that the selected pattern should be different for different places of use. For example, in places that need to be kept clean, products with embossed effects cannot be selected. In solemn places, bright and messy products should not be selected. Plastic floor varnished cloth has the advantages of light weight, elasticity, good mechanical strength, good foot feel, comfortable foot feel, wear resistance, stain resistance, corrosion resistance, heat insulation, sound insulation, moisture resistance, low water absorption, good insulation, self-extinguishing, easy to clean, simple construction, convenient maintenance, low price, etc. It is widely used in a large number of civil buildings and public places, factories and laboratories with high cleanliness requirements.

[0003] However, currently when floor leather is laid near a wall using equipment, a certain blank space will appear under the laying equipment, and the floor leather cannot be pulled under it for laying, resulting in a laying dead corner that requires subsequent repairs, reducing work efficiency. Therefore, the present invention provides an automatic laying machine for double-roll laying to meet people's needs. Summary of the invention

[0004] The present invention provides an automatic laying machine for double-roll laying, which can effectively solve the problem proposed in the above background technology that when the floor leather is laid near a wall using the equipment, a certain blank space will appear under the laying equipment, and the floor leather cannot be pulled under it for laying, resulting in a laying dead corner, which needs to be repaired later and reduces work efficiency.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an automatic paving machine for double-roller paving, comprising a paving machine, a crawler-type running chassis is installed at the bottom end of the paving machine, a paving motor is fixedly installed at one end of the top of the paving machine, an active roller is fixedly connected to the output shaft of the paving motor, a driven roller is fixedly installed at one end of the bottom of the paving machine, and a surplus reserve mechanism is installed at the bottom of the paving machine;

[0006] The margin reservation mechanism includes a fixed frame, a guide groove, a positioning roller, a lifting roller, a clamping block, a moving block, a driving motor, a conveying screw, a fixed frame, a pressure sensor, a guide frame, a movable rod, an arc-shaped pressure block, a contact block, a guide cylinder, a buffer spring, a guide round rod, a connecting round block, a connecting plate, a protective pad and a press switch;

[0007] Fixed frames are symmetrically fixedly installed on both sides of one end of the bottom of the paving machine, and guide grooves are provided in the middle of the two fixed frames. A positioning roller is fixedly installed between the bottoms of the two fixed frames, and a lifting roller is installed at the bottom of the fixed frame at one side of the positioning roller. Blocks are symmetrically fixedly connected at both ends of the lifting roller, and one end of the two blocks is fixedly connected to a moving block. Drive motors are fixedly installed on the tops of the two fixed frames, and the output shafts of the two drive motors are fixedly connected to conveying screws.

[0008] A fixing frame is symmetrically fixedly installed at one end of the top of the laying machine, a pressure sensor is fixedly installed at the top of the fixing frame, a guide frame is fixedly connected to one end of the middle of the fixing frame, a movable rod is movably installed through the middle of the guide frame, an arc-shaped pressure block is fixedly connected to the bottom end of the movable rod, and a contact block is fixedly connected to the top end of the movable rod.

[0009] According to the above technical solution, the lifting roller is located on one side of the driven roller, the two clamping blocks are movably embedded in the guide grooves respectively, and the clamping blocks are slidably connected to the fixing frame.

[0010] According to the above technical solution, the two conveying screws are movable through the two moving blocks respectively, and the moving blocks and the conveying screws are connected by threads.

[0011] According to the above technical solution, the contact block is located directly below the pressure sensor, a gap is left between the top of the contact block and the bottom of the pressure sensor, and the signal output end of the pressure sensor is connected to the signal input end of the drive motor.

[0012] According to the above technical solution, an arc-shaped groove is provided in the middle of the bottom end of the arc-shaped pressing block, and the arc-shaped pressing block is located directly above the lifting roller.

[0013] According to the above technical solution, guide cylinders are symmetrically fixedly installed at both ends of the bottom of the back of the laying machine, a buffer spring is sleeved on the surface of the guide cylinder, a guide round rod is movably embedded in the middle of the guide cylinder, the ends of the guide round rod are fixedly connected with connecting round blocks, a connecting plate is fixedly installed between the ends of the two connecting round blocks, a protective pad is fixedly installed at one end of the middle of the connecting plate, and a push switch is fixedly installed at one end of the bottom of the laying machine and at a position corresponding to the connecting plate.

[0014] According to the above technical solution, the two ends of the buffer spring are respectively connected to the laying machine and the connecting round block, the positions of the protective pad and the push switch correspond to each other, and the signal output end of the push switch is connected to the signal input end of the drive motor.

[0015] According to the above technical solution, safety protection mechanisms are installed at both ends of the laying machine;

[0016] The safety protection mechanism includes a fixed cylinder, an extrusion spring, a buffer ring, a threaded cylinder, a locking knob, a protection cover plate and a protection side plate;

[0017] Fixed cylinders are symmetrically fixedly installed on the top and bottom of both sides of the laying machine, an extrusion spring is sleeved on the surface of the fixed cylinder, a buffer ring is fixedly connected to the end of the extrusion spring, a threaded column is fixedly connected to the end of the fixed cylinder, a locking knob is installed on the surface of the threaded column, and protective cover plates are symmetrically installed on both sides of the laying machine, and protective side plates are fixedly connected to both ends of the protective cover plates.

[0018] According to the above technical solution, the buffer ring is sleeved on the surface of the fixed cylinder, and the inner wall of the buffer ring fits with the surface of the fixed cylinder.

[0019] According to the above technical solution, mounting holes are provided at the top and bottom of the protective cover plate at positions corresponding to the fixed cylinder, the fixed cylinder movably passes through the mounting holes, and the protective cover plate is tightly attached to the surface of the buffer ring;

[0020] The locking knob is connected to the threaded column via threads, and the locking knob is tightly attached to the surface of the protective cover.

[0021] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0022] 1. A surplus reserve mechanism is provided, and the positioning roller and the lifting roller are used to guide and reverse the floor leather and other items to be laid. When laying, the surfaces of the positioning roller, the lifting roller and the driven roller are bypassed respectively, so that the lifting roller limits the floor leather to a certain extent, and the driving motor is used to drive the conveying screw to rotate, drive the moving block and the lifting roller to rise along the guide groove, and pull and rise the floor leather surrounding its surface, playing a role of reserving a certain margin, so as to meet the laying of the blank area at the bottom of the equipment after the equipment moves to one side of the wall, and prevent the equipment from pulling the floor leather forward to lay it after it contacts the wall or at the starting position against the wall, causing a certain laying dead angle below it, and the lifting roller is used to pull the floor leather upward and reserve it, and the reserved part is cut off and the equipment moves to cover the blank space below the equipment, without the need for subsequent blank supplementation, thereby reducing the workload and effectively improving the work efficiency.

[0023] 2. The arc-shaped pressure block is used to monitor the rising position of the lifting roller. The rising of the lifting roller pushes the arc-shaped pressure block, and the movable rod, under the guidance of the guide frame, pushes the contact block to contact the pressure sensor. The pressure sensor is used to determine the rising height and position of the lifting roller, so that the drive motor can be controlled to stop in time after the reserved floor leather reaches the predetermined length, and the control is more precise.

[0024] 3. The connecting plate is used to position and protect the back of the equipment. It plays a role of buffering protection when it contacts the wall, preventing the equipment from directly colliding with the wall and causing damage. The buffer spring absorbs the vibration caused by the collision, thereby improving the stability of the equipment. At the same time, the connecting plate and the protective pad are squeezed and their positions change, contacting and turning on the push switch, thereby controlling the drive motor to automatically reserve the remaining amount of the floor leather in time after contacting the wall. The control method is simple and fast.

[0025] 4. A safety protection mechanism is provided, which utilizes a fixed cylinder and a locking rotation to install and fix the protective cover plate, so that it is located on both sides of the equipment, thus providing a certain safety protection for the equipment, thereby preventing the equipment from colliding with foreign objects during movement and causing damage to the mechanisms on both sides of the equipment. At the same time, the extrusion spring and the buffer ring provide buffering support for the protective cover plate, absorbing and buffering the impact force and vibration when it is collided. The protective side panels also provide cover and protection for the exposed mechanisms on both sides.

[0026] To sum up, through the combination of the margin reservation mechanism and the safety protection mechanism, a certain safety protection is provided to the equipment, and protection is provided from multiple directions including the back and both sides of the equipment, so that the forward direction and both sides of the equipment are protected during the movement. The protection range is wide, which improves the safety of equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 It is a schematic diagram of the structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the installation structure of the connecting plate of the present invention;

[0030] Figure 3 It is a schematic diagram of the installation structure of the threaded column of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the surplus reserve mechanism of the present invention;

[0032] Figure 5It is a schematic diagram of the installation structure of the moving block of the present invention;

[0033] Figure 6 It is a schematic diagram of the installation structure of the arc-shaped pressing block of the present invention;

[0034] Figure 7 It is a schematic diagram of the installation structure of the protective pad of the present invention;

[0035] Figure 8 It is a structural schematic diagram of the safety protection mechanism of the present invention;

[0036] Fig. 9 It is a schematic diagram of the installation structure of the lifting roller of the present invention;

[0037] Numbers in the figure: 1, laying machine; 2, crawler-type driving chassis; 3, laying motor; 4, driving roller; 5, driven roller;

[0038] 6. Residual reserve mechanism; 601. Fixed frame; 602. Guide groove; 603. Positioning roller; 604. Lifting roller; 605. Block; 606. Moving block; 607. Driving motor; 608. Conveying screw; 609. Fixed frame; 610. Pressure sensor; 611. Guide frame; 612. Movable rod; 613. Arc pressure block; 614. Contact block; 615. Guide cylinder; 616. Buffer spring; 617. Guide round rod; 618. Connecting round block; 619. Connecting plate; 620. Protective pad; 621. Press switch;

[0039] 7. Safety protection mechanism; 701. Fixed cylinder; 702. Extrusion spring; 703. Buffer ring; 704. Threaded column; 705. Locking knob; 706. Protection cover; 707. Protection side plate. DETAILED DESCRIPTION

[0040] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0041] Example: Figure 1-9 As shown, the present invention provides a technical solution, an automatic paving machine for double-roller paving, comprising a paving machine 1, a crawler-type driving chassis 2 is installed at the bottom end of the paving machine 1, a paving motor 3 is fixedly installed at one end of the top of the paving machine 1, an active roller 4 is fixedly connected to the output shaft of the paving motor 3, a driven roller 5 is fixedly installed at one end of the bottom of the paving machine 1, and a surplus reserve mechanism 6 is installed at the bottom of the paving machine 1;

[0042] The surplus reserve mechanism 6 includes a fixed frame 601, a guide groove 602, a positioning roller 603, a lifting roller 604, a clamping block 605, a moving block 606, a driving motor 607, a conveying screw 608, a fixed frame 609, a pressure sensor 610, a guide frame 611, a movable rod 612, an arc-shaped pressing block 613, a contact block 614, a guide cylinder 615, a buffer spring 616, a guide round rod 617, a connecting round block 618, a connecting plate 619, a protective pad 620 and a press switch 621;

[0043] A fixed frame 601 is symmetrically fixedly installed on both sides of one end of the bottom of the paving machine 1, and a guide groove 602 is opened in the middle of the two fixed frames 601. A positioning roller 603 is fixedly installed between the bottoms of the two fixed frames 601. A lifting roller 604 is installed at the bottom of the fixed frame 601 at a position on one side of the positioning roller 603. Blocks 605 are symmetrically fixedly connected at both ends of the lifting roller 604. The lifting roller 604 is located on one side of the driven roller 5. The two blocks 605 are movably embedded in the guide groove 602 respectively. The blocks 605 and the fixed frame 601 are slidably connected. One end of the two blocks 605 is fixedly connected with a moving block 606. A driving motor 607 is fixedly installed on the top of the two fixed frames 601. The output shafts of the two driving motors 607 are fixedly connected with a conveying screw 608. The two conveying screws 608 are movably passed through the two moving blocks 606 respectively. The moving block 606 and the conveying screw 608 are connected by threads. The lowering roller 604 guides and reverses the floor leather and other items to be laid, and bypasses the surfaces of the positioning roller 603, the lifting roller 604 and the driven roller 5 during laying, so that the lifting roller 604 limits the floor leather to a certain extent, and the driving motor 607 drives the conveying screw 608 to rotate, drives the moving block 606 and the lifting roller 604 to rise along the guide groove 602, and pulls and lifts the floor leather surrounding its surface, and plays a role of a certain reserved margin, so as to meet the laying of the blank area at the bottom of the equipment after the equipment moves to one side of the wall, and prevents the equipment from pulling the floor leather forward to lay it at the position where it contacts the wall or starts against the wall, causing a certain laying dead angle below it, and the lifting roller 604 is used to pull the floor leather upward and reserve it, and the reserved part is cut off and the equipment moves, so that the blank area below the equipment can be paved and covered, without the need to supplement the blank area later, thereby reducing the workload and effectively improving the work efficiency;

[0044] A fixing frame 609 is symmetrically fixedly installed at one end of the top of the laying machine 1, a pressure sensor 610 is fixedly installed at the top of the fixing frame 609, a guide frame 611 is fixedly connected to one end of the middle of the fixing frame 609, a movable rod 612 is movably installed through the middle of the guide frame 611, an arc-shaped pressing block 613 is fixedly connected to the bottom end of the movable rod 612, an arc-shaped groove is provided in the middle of the bottom end of the arc-shaped pressing block 613, the arc-shaped pressing block 613 is located directly above the lifting roller 604, a contact block 614 is fixedly connected to the top of the movable rod 612, the contact block 614 is located directly below the pressure sensor 610, and the top of the contact block 614 is in contact with the pressure sensor 610. A gap is left between the bottom ends of the force sensor 610, and the signal output end of the pressure sensor 610 is connected to the signal input end of the drive motor 607. The arc-shaped pressing block 613 is used to monitor the rising position of the lifting roller 604. The lifting roller 604 rises to push the arc-shaped pressing block 613, and the movable rod 612, under the guidance of the guide frame 611, pushes the contact block 614 to contact the pressure sensor 610. The pressure sensor 610 is used to determine the rising height and position of the lifting roller 604, so that the drive motor 607 can be controlled to stop in time after the reserved floor leather reaches a predetermined length, and the control is more precise;

[0045] A guide cylinder 615 is symmetrically fixedly installed at both ends of the bottom of the back of the laying machine 1, and a buffer spring 616 is sleeved on the surface of the guide cylinder 615. A guide round rod 617 is movably embedded in the middle of the guide cylinder 615. A connecting round block 618 is fixedly connected to the end of the guide round rod 617. A connecting plate 619 is fixedly installed between the ends of the two connecting round blocks 618. A protective pad 620 is fixedly installed at one end of the middle of the connecting plate 619. A pressing switch 621 is fixedly installed at one end of the bottom of the laying machine 1 and the corresponding position of the connecting plate 619. The two ends of the buffer spring 616 are respectively connected to the laying machine 1 and the connecting round block 618. The protective pad 620 and the pressing switch 621 are fixedly installed. 1 corresponds to each other, the signal output end of the push switch 621 is connected to the signal input end of the drive motor 607, and the connecting plate 619 is located at the back of the device for positioning protection, which plays a buffering protection role when it contacts the wall, preventing the device from directly colliding with the wall and causing damage. The buffer spring 616 absorbs the vibration generated by the collision, thereby improving the stability of the device. At the same time, the connecting plate 619 and the protective pad 620 are squeezed and their positions change, contacting and turning on the push switch 621, and then controlling the drive motor 607, so that it can automatically and timely perform the floor leather surplus reservation operation after contacting the wall, and the control method is simple and fast;

[0046] Safety protection mechanisms 7 are installed at both ends of the laying machine 1;

[0047] The safety protection mechanism 7 includes a fixed cylinder 701, a squeeze spring 702, a buffer ring 703, a threaded column 704, a locking knob 705, a protection cover plate 706 and a protection side plate 707;

[0048] The top and bottom of both sides of the laying machine 1 are symmetrically fixedly installed with fixed cylinders 701, the surface of the fixed cylinder 701 is sleeved with an extrusion spring 702, and the end of the extrusion spring 702 is fixedly connected with a buffer ring 703, the buffer ring 703 is sleeved on the surface of the fixed cylinder 701, and the inner wall of the buffer ring 703 fits the surface of the fixed cylinder 701, and the end of the fixed cylinder 701 is fixedly connected with a threaded column 704, and the surface of the threaded column 704 is installed with a locking knob 705. Protective cover plates 706 are symmetrically installed on both sides of the laying machine 1, and both ends of the protective cover plate 706 are fixedly connected with protective side plates 707. The top and bottom of the protective cover plate 706 are provided with mounting holes at the corresponding positions of the fixed cylinder 701. 01 are both movable and penetrate the mounting circular holes, the protective cover plate 706 is tightly attached to the surface of the buffer ring 703, the locking knob 705 is threadedly connected to the threaded column 704, the locking knob 705 is tightly attached to the surface of the protective cover plate 706, and the fixing cylinder 701 and the locking rotation 705 are used to install and fix the protective cover plate 706, so that it is located on both sides of the equipment, which plays a certain safety protection role for the equipment, preventing the equipment from colliding with foreign objects from the outside when it is moving, causing damage to the mechanisms on both sides of the equipment. At the same time, the extrusion spring 702 and the buffer ring 703 both provide buffering support for the protective cover plate 706, absorb and buffer the impact force and vibration when it is collided, and the protective side plate 707 also covers and protects the exposed mechanisms on both sides.

[0049] The working principle and use process of the present invention are as follows: first, the crawler chassis 2 is operated and moves, driving the equipment to move to the space where the floor leather needs to be laid. The floor leather reel to be laid is fixed on the surface of the active roller 4, and the end of the floor leather is unfolded, passes through the interior of the laying machine 1, bypasses from the surface of the bottom of the positioning roller 603, passes through the gap between the positioning roller 603 and the lifting roller 604, and is wrapped around the surface of the top of the lifting roller 604, and then bypasses from the surface of the bottom of the driven roller 5 to fit the initial laying position on the ground. The crawler chassis 2 drives the equipment to move along a predetermined travel trajectory inside the laying space, and the laying motor 3 drives the active roller 4 to rotate, and the rolled-up floor leather is lengthened so that it is gradually lengthened, unfolded, and laid flat on the ground;

[0050] After laying for a period of time, the equipment gradually approaches the wall in front until the connecting plate 619 contacts the wall first, the connecting plate 619 is squeezed, the buffer spring 616 is compressed, and the guide round rod 617 moves toward the inside of the guide cylinder 615. The buffer spring 616 and the guide round rod 617 absorb and buffer the impact force and vibration generated during the contact and collision. The connecting plate 619 is squeezed and pushed inward, and the protective pad 620 contacts and presses the push switch 621. The signal of the push switch 621 being pressed and started is transmitted to the drive motor 607 to start the operation. The drive motor 607 drives the conveying screw 608 to rotate, the moving block 606 rises along the conveying screw 608, and the block 605 rises along the guide groove 602, so that the lifting roller 604 rises, pushing the floor leather that is in contact with the top surface to rise, and the floor leather on the surface of the active roller 4 continues to lengthen, and then the lengthened part of the floor leather is pushed up for preparation;

[0051] After the lifting roller 604 rises to a certain height, the arc-shaped pressing block 613 is pushed upward, the movable rod 612 rises along the guide frame 611, and the contact block 614 pushes and presses the bottom end of the pressure sensor 610. The pressure sensor 610 converts the sensed pressure signal and transmits it to the drive motor 607, and controls the drive motor 607 to stop running, so that the lifting roller 604 stops rising. The additional cutting mechanism can be used to cut from one side of the lifting roller 604. The equipment is close to the wall, and there is a certain blank space below it that cannot be directly laid If covering is set, the part pushed up by the lifting roller 604 is the reserved part. When the crawler chassis 2 drives the equipment to move to other positions, the reserved part can be laid flat on the ground to cover the dead corners covered by the equipment. After the equipment is relocated, the driving motor 607 is used to drive the conveying screw 608 to rotate in the opposite direction, so that the lifting roller 604 descends along the guide groove 602, and the end of the remaining floor leather is again wrapped around the top of the lifting roller 604, and then wrapped around the bottom of the driven roller 5. When the equipment is moving, the laying continues;

[0052] When the equipment is running, the connecting plate 619 and the buffer spring 616 are used for buffering protection in the forward direction, so that the laying machine 1 will not collide violently with the wall directly, and protective cover plates 706 are installed on both sides of the laying machine 1. The protective cover plates 706 are sleeved on the surface of the fixed cylinder 701, and the extrusion spring 702 and the buffer ring 703 support and buffer the protective cover plates 706. The locking knob 705 is tightened by twisting and twisting with the threaded column 704, close to the surface of the protective cover plates 706, and locked and fixed. The two protective cover plates 706 are used for laying machine 1. The two sides of the laying machine 1 are protected so that the two sides will not directly collide with foreign objects in the outside world during the driving of the equipment. When the protective cover 706 collides with foreign objects, the extrusion spring 702 and the buffer ring 703 will absorb and buffer the impact force and vibration of the collision, and the protective cover 706 itself plays a protective role, so that the laying machine 1 will not be damaged. The protective side plate 707 covers and protects the conveying screw 608, the driving motor 607 and other mechanisms, so that they will not be directly exposed to the external environment, reducing the chance of them being damaged by collision.

[0053] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic laying machine for double-roll laying, comprising a laying machine (1), characterized in that: A crawler-type chassis (2) is installed at the bottom end of the paving machine (1); a paving motor (3) is fixedly installed at one end of the top of the paving machine (1); an output shaft of the paving motor (3) is fixedly connected to a driving roller (4); a driven roller (5) is fixedly installed at one end of the bottom of the paving machine (1); and a surplus reserve mechanism (6) is installed at the bottom of the paving machine (1); The surplus reserve mechanism (6) comprises a fixed frame (601), a guide groove (602), a positioning roller (603), a lifting roller (604), a clamping block (605), a moving block (606), a driving motor (607), a conveying screw (608), a fixed frame (609), a pressure sensor (610), a guide frame (611), a movable rod (612), an arc-shaped pressing block (613), a contact block (614), a guide cylinder (615), a buffer spring (616), a guide round rod (617), a connecting round block (618), a connecting plate (619), a protective pad (620) and a pressing switch (621); A fixed frame (601) is symmetrically fixedly installed on both sides of one end of the bottom of the laying machine (1), a guide groove (602) is provided in the middle of the two fixed frames (601), a positioning roller (603) is fixedly installed between the bottoms of the two fixed frames (601), a lifting roller (604) is installed at the bottom of the fixed frame (601) at a position on one side of the positioning roller (603), a clamping block (605) is symmetrically fixedly connected at both ends of the lifting roller (604), one end of the two clamping blocks (605) is fixedly connected to a moving block (606), a driving motor (607) is fixedly installed at the top of the two fixed frames (601), and the output shafts of the two driving motors (607) are fixedly connected to a conveying screw (608); A fixing frame (609) is symmetrically fixedly installed at one end of the top of the laying machine (1), a pressure sensor (610) is fixedly installed at the top of the fixing frame (609), a guide frame (611) is fixedly connected to one end of the middle of the fixing frame (609), a movable rod (612) is movably installed through the middle of the guide frame (611), an arc-shaped pressure block (613) is fixedly connected to the bottom end of the movable rod (612), and a contact block (614) is fixedly connected to the top end of the movable rod (612).

2. The automatic paving machine for double-roll paving according to claim 1, characterized in that: The lifting roller (604) is located on one side of the driven roller (5), and the two clamping blocks (605) are respectively movably embedded in the inside of the guide groove (602), and the clamping blocks (605) are slidably connected to the fixing frame (601).

3. The automatic paving machine for double-roll paving according to claim 1, characterized in that: The two conveying screw rods (608) are respectively movable and penetrate the two moving blocks (606), and the moving blocks (606) and the conveying screw rods (608) are connected by threads.

4. The automatic paving machine for double-roll paving according to claim 1, characterized in that: The contact block (614) is located directly below the pressure sensor (610), a gap is left between the top end of the contact block (614) and the bottom end of the pressure sensor (610), and the signal output end of the pressure sensor (610) is connected to the signal input end of the drive motor (607).

5. The automatic paving machine for double-roll paving according to claim 1, characterized in that: An arc-shaped groove is provided in the middle of the bottom end of the arc-shaped pressing block (613), and the arc-shaped pressing block (613) is located directly above the lifting roller (604).

6. The automatic paving machine for double-roll paving according to claim 1, characterized in that: Guide cylinders (615) are symmetrically fixedly installed at both ends of the bottom of the back of the laying machine (1), and a buffer spring (616) is sleeved on the surface of the guide cylinder (615). A guide round rod (617) is movably embedded in the middle of the guide cylinder (615), and a connecting round block (618) is fixedly connected to the end of the guide round rod (617). A connecting plate (619) is fixedly installed between the ends of the two connecting round blocks (618), and a protective pad (620) is fixedly installed at one end of the middle of the connecting plate (619). A push switch (621) is fixedly installed at a position corresponding to the connecting plate (619) at one end of the bottom of the laying machine (1).

7. The automatic paving machine for double-roll paving according to claim 6, characterized in that: The two ends of the buffer spring (616) are respectively connected to the laying machine (1) and the connecting round block (618), the positions of the protective pad (620) and the push switch (621) correspond to each other, and the signal output end of the push switch (621) is connected to the signal input end of the drive motor (607).

8. The automatic paving machine for double-roll paving according to claim 1, characterized in that: Safety protection mechanisms (7) are installed at both ends of the laying machine (1); The safety protection mechanism (7) comprises a fixed cylinder (701), a compression spring (702), a buffer ring (703), a threaded cylinder (704), a locking knob (705), a protection cover plate (706) and a protection side plate (707); The top and bottom of both sides of the laying machine (1) are symmetrically fixedly installed with fixed cylinders (701), the surface of the fixed cylinder (701) is sleeved with an extrusion spring (702), the end of the extrusion spring (702) is fixedly connected with a buffer ring (703), the end of the fixed cylinder (701) is fixedly connected with a threaded column (704), and the surface of the threaded column (704) is installed with a locking knob (705), and protective cover plates (706) are symmetrically installed on both sides of the laying machine (1), and both ends of the protective cover plates (706) are fixedly connected with protective side plates (707).

9. The automatic paving machine for double-roll paving according to claim 8, characterized in that: The buffer ring (703) is sleeved on the surface of the fixed cylinder (701), and the inner wall of the buffer ring (703) is in contact with the surface of the fixed cylinder (701).

10. The automatic paving machine for double-roll paving according to claim 8, characterized in that: The top and bottom of the protective cover plate (706) are provided with mounting holes at positions corresponding to the fixed cylinder (701), the fixed cylinder (701) is movably inserted through the mounting holes, and the protective cover plate (706) is tightly attached to the surface of the buffer ring (703); The locking knob (705) is connected to the threaded column (704) via threads, and the locking knob (705) is tightly attached to the surface of the protective cover plate (706).

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