A compacting device for roof slope leveling layer

Abstract

The present invention relates to a compacting device for a roof slope leveling layer, which belongs to the technical field of roof compaction; it comprises a front fixing frame and a rear fixing frame distributed front and back, the front fixing frame and the rear fixing frame are connected by a telescopic mechanism; a handle and two walking wheels are provided on the rear fixing frame, the handle and the walking wheels are connected by a steering mechanism; a first pressure roller, a second pressure roller and a third pressure roller are sequentially provided between the front fixing frame and the rear fixing frame from front to back, wherein the first pressure roller is rotatably provided on the front fixing frame, the first pressure roller and the third pressure roller are both connected to the second pressure roller by a folding mechanism, the folding mechanism comprises a first folding arm and a second folding arm, the first folding arm is provided between the first pressure roller and the second pressure roller, and the second folding arm is provided between the second pressure roller and the third pressure roller; it solves the problem that the current roof slope leveling layer compacting equipment is difficult to adjust the compaction effect and difficult to enter the construction elevator.

Description

Technical Field

[0001] The invention belongs to the technical field of roof compaction, and in particular relates to a compaction device for a roof slope leveling layer. Background Art

[0002] During roof grade layer construction, compaction is a critical step in ensuring its quality. Traditional roof grade layer compaction equipment typically has a rigid structure, making it difficult to adjust the compaction effect to suit varying construction requirements. For example, when varying degrees of compaction (such as extremely tight, moderately tight, or averagely tight) are required, traditional equipment often lacks the flexibility to adapt its structure. This requires repeated compaction or the use of different compaction equipment, which not only increases construction costs and time, but also reduces efficiency.

[0003] Furthermore, due to the limited space inside the construction elevator, the compaction device is bulky and difficult to fold when transporting to the roof. This makes it difficult to transport the device inside the elevator, increasing transportation complexity and labor costs. Furthermore, the traditional compaction device lacks convenient steering, making it difficult for operators to quickly and flexibly control the device's direction, which affects the smoothness of the compaction operation and the overall compaction effect on the roof's slope leveling layer. Summary of the Invention

[0004] The present invention overcomes the deficiencies of the prior art and proposes a compacting device for a roof slope leveling layer, solving the problems that the current roof slope leveling layer compacting equipment is difficult to adjust the compacting effect and difficult to enter a construction elevator.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0006] A compacting device for a roof slope leveling layer comprises a front fixing frame and a rear fixing frame distributed front and back, the front fixing frame and the rear fixing frame being connected by a telescopic mechanism; a handle and two running wheels are provided on the rear fixing frame, the handle and the running wheels being connected by a steering mechanism; a first pressing roller, a second pressing roller and a third pressing roller are sequentially provided between the front fixing frame and the rear fixing frame from front to back, wherein the first pressing roller is rotatably provided on the front fixing frame, the first pressing roller and the third pressing roller are both connected to the second pressing roller by a folding mechanism, the folding mechanism comprising a first folding arm and a second folding arm, the first folding arm being provided between the first pressing roller and the second pressing roller, and the second folding arm being provided between the second pressing roller and the third pressing roller.

[0007] Furthermore, a battery is provided inside the rear end of the rear fixing frame, and an installation cavity is provided inside the front end of the rear fixing frame; two running wheels are provided on the left and right sides of the rear end of the rear fixing frame, and the running wheels have hub motors inside, and an outer shell is provided at the upper end of the rear fixing frame, and the steering mechanism is provided inside the outer shell.

[0008] Furthermore, the handle includes a fixed rod, a folding rod, and a holding rod. The fixed rod remains vertical, the lower end of the fixed rod is rotatably connected to the upper end surface of the rear fixed frame, and the upper end of the fixed rod is hinged to the lower end of the folding rod; the holding rod is horizontally arranged along the left and right directions, the upper end of the folding rod is fixedly connected to the middle part of the holding rod, and a holding portion is respectively provided at the left and right ends of the holding rod.

[0009] Furthermore, the steering mechanism includes a steering gear, a steering rack, a sliding seat, a sliding rod, a first connecting rod, a second connecting rod, and a mounting seat; a steering gear is fixedly sleeved on the outer side of the lower end of the fixed rod, a sliding seat is fixedly provided on the upper end surface of the rear fixed frame in front of the steering gear, a sliding rod is provided inside the sliding seat to slide along the left and right directions, a steering rack is fixed on the sliding rod, and the steering rack is meshed with the steering gear; the two walking wheels are respectively mounted on the two mounting seats, and the two mounting seats are respectively rotatably arranged at the left and right ends of the rear fixed frame; a first connecting rod is respectively rotatably provided at the left and right ends of the sliding rod, a second connecting rod is respectively rotatably provided at the end of the two first connecting rods away from the sliding rod, and the ends of the two second connecting rods away from the first connecting rod are respectively fixedly connected to the two mounting seats.

[0010] Furthermore, the front side fixing frame is a square box structure with an open lower end and a rear end, and a partition plate is fixedly arranged at the middle height of the inner side of the front side fixing frame; the first pressure roller, the second pressure roller, and the third pressure roller are all cylindrical structures, the first pressure roller is rotatably sleeved on the outside of the first rotating shaft, and the left and right ends of the first rotating shaft are respectively rotatably inserted into the left plate and the lower end of the right plate of the front side fixing frame; the second pressure roller is rotatably sleeved on the outside of the second rotating shaft; the third pressure roller is rotatably sleeved on the outside of the third rotating shaft; the front ends of the two first folding arms are respectively fixedly sleeved on the left and right outside ends of the first rotating shaft, and the rear ends of the two second folding arms are respectively fixedly sleeved on the left and right outside ends of the third rotating shaft; the first folding arm and the second folding arm on the same side are symmetrical front and back, and the lengths of the first folding arm and the second folding arm remain equal.

[0011] Furthermore, the folding mechanism also includes a first folding motor, a first transmission shaft, a first driving gear, a first driven gear, a chain transmission mechanism, a first folding gear, and a second folding gear; a first folding motor is fixedly arranged at the upper end of the partition plate; a left and right horizontal first transmission shaft is rotatably arranged above the partition plate, and the left and right ends of the first transmission shaft respectively extend to the outer sides of the left plate and the right plate of the front fixed frame; a first driving gear is fixedly arranged on the output shaft of the first folding motor, and a first driven gear is fixedly arranged on the first transmission shaft, and the first driving gear is meshed with the first driven gear; a group of chain transmission mechanisms are respectively arranged between the same end of the first transmission shaft and the first rotating shaft, and a first folding gear is rotatably arranged at the rear end of the first folding arm through the first hinge shaft, the first hinge shaft is fixedly inserted into the inside of the first folding gear, the first hinge shaft is rotatably arranged at the front end of the first folding arm, and a second folding gear is fixedly arranged at the front end of the second folding arm through the second hinge shaft, the second hinge shaft is fixedly inserted into the inside of the second folding gear, the second hinge shaft is fixedly arranged at the front end of the second folding arm, and the first folding gear is meshed with the second folding gear.

[0012] Furthermore, the folding mechanism also includes a third connecting rod and an adapter frame; a adapter frame is provided between the rear end of the first folding arm and the front end of the second folding arm, and the adapter frame includes a horizontal section and an inclined section, the horizontal section is horizontally arranged along the front-to-back direction, the front end of the inclined section is inclined toward the upper side, and the rear end of the inclined section is fixedly connected to the front end of the horizontal section; the front and rear ends of the horizontal section of the adapter frame are hinged to the first hinge shaft and the end of the second hinge shaft respectively; a third connecting rod is provided above the first folding arm; the rear end of the third connecting rod is hinged to the front end of the inclined section of the adapter frame, and the front end of the third connecting rod is hinged to the inner wall of the front fixed frame; a parallelogram connecting rod mechanism is formed between the connecting line between the hinge axis of the front end of the third connecting rod and the axis of the first rotating shaft, the first folding arm, the inclined section of the adapter frame, and the third connecting rod; the left and right ends of the second rotating shaft are fixedly connected to the middle parts of the horizontal sections of the left and right adapter frames respectively.

[0013] Furthermore, the folding mechanism also includes a mounting frame and a second folding motor; a mounting frame is fixedly arranged on the outer side of the rear end of the first folding arm, and the mounting frame is located on the outer side of the front of the adapter frame; a second folding motor is fixedly arranged on the mounting frame, and the output shaft of the second folding motor is fixedly connected to one end of the first hinge shaft.

[0014] Furthermore, the telescopic mechanism includes a telescopic arm; two telescopic arms are symmetrical between the front and rear fixed frames; the front ends of the two telescopic arms are fixedly connected to the left and right sides of the front fixed frame respectively, and the rear ends of the two telescopic arms are fixedly connected to the left and right sides of the front end surface of the rear fixed frame respectively; the telescopic arm includes a fixed arm, a first-level telescopic arm, a second-level telescopic arm, and a third-level telescopic arm, the rear end of the fixed arm is fixedly arranged on the front end surface of the rear fixed frame, the rear end of the first-level telescopic arm is slidably inserted into the front end opening of the fixed arm, the rear end of the second-level telescopic arm is slidably inserted into the front end opening of the first-level telescopic arm, and the rear end of the third-level telescopic arm is slidably inserted into the front end opening of the second-level telescopic arm; a first rack extending horizontally front and back is fixedly provided on the left and right inner walls of the fixed arm respectively, A second rack extending horizontally front and back is fixedly provided on the left and right outer walls of the retractable arm respectively, a first connecting groove extending horizontally front and back is provided on the left and right side walls of the first-stage telescopic arm respectively, a first telescopic gear is rotatably provided inside each first connecting groove, the first telescopic gear is meshed with the first rack and the second rack on the same side; a third rack extending horizontally front and back is fixedly provided on the left and right inner walls of the first-stage telescopic arm respectively, a fourth rack extending horizontally front and back is fixedly provided on the left and right outer walls of the third-stage telescopic arm respectively, a second connecting groove extending horizontally front and back is provided on the left and right side walls of the second-stage telescopic arm respectively, a second telescopic gear is rotatably provided inside each second connecting groove, the second telescopic gear is meshed with the third rack and the fourth rack on the same side.

[0015] Furthermore, the telescopic mechanism also includes a telescopic motor, a second transmission shaft, a second driving gear, a second driven gear, and a screw; a front and rear horizontal screw is screwed on the rear side plate of each first-level telescopic arm, and the rear ends of the two screws are rotatably inserted into the mounting cavity of the rear fixing frame; a telescopic motor is fixedly installed inside the mounting cavity of the rear fixing frame, and a left and right horizontal second transmission shaft is also rotatably installed inside the mounting cavity of the rear fixing frame, a second driving gear is fixed on the output shaft of the telescopic motor, a second driven gear is fixed on the second transmission shaft, and the second driving gear is meshed with the second driven gear; both ends of the second transmission shaft are transmission-connected to the rear ends of the two screws through a pair of bevel gears.

[0016] The beneficial effects of the present invention compared to the prior art are:

[0017] (1) The present invention can flexibly adjust the structure of the compacting device according to different compaction requirements through the cooperation of the folding mechanism and the telescopic mechanism; when it is necessary to compact particularly hard, the folding mechanism can be controlled to be in the secondary folding state, so that the gravity of the second and third pressing rollers is concentrated on the first pressing roller, thereby increasing the pressure of the first pressing roller on the roof slope layer; when it is necessary to compact relatively hard, it can be adjusted to the primary folding state and the telescopic arm can be appropriately extended, so that the gravity of the second pressing roller acts on the first and third pressing rollers, thereby obtaining a greater pressure; when it is necessary to compact moderately hard, the folding mechanism can be adjusted to the initial state and the telescopic arm can be extended to the longest, so that the gravity of the three pressing rollers acts evenly on the roof slope layer, thereby achieving a smaller pressure, thereby meeting diverse construction requirements and improving construction quality and efficiency.

[0018] (2) The device can be adjusted to the minimum volume state by controlling the folding rod, folding mechanism and telescopic arm of the handle, which is convenient for transportation when the internal space of the construction elevator is limited, reducing the transportation difficulty and labor cost, and improving the convenience and flexibility of construction.

[0019] (3) The setting of the steering mechanism allows the operator to drive the two walking wheels to rotate to the same side through the steering gear, steering rack and other components by simply turning the handle, thereby realizing the overall steering of the device. The operation is simple and convenient, and the compaction device can better perform comprehensive and efficient compaction operations on the roof, thereby improving the smoothness of the compaction operation and construction efficiency.

[0020] (4) The folding mechanism adopts a parallelogram linkage mechanism and other designs to ensure the relative position stability of each component during the folding process. For example, the adapter frame always remains horizontal when the first folding arm rotates, ensuring the stable operation and compaction effect of the pressure roller; the telescopic mechanism realizes the stable extension and retraction of the telescopic arm through the combination of gear rack transmission and screw transmission, ensuring the stability and reliability of the overall structure of the device.

[0021] (5) The operation of the device, such as walking, folding, telescopic and steering, is controlled by motors, such as the hub motor inside the walking wheel, the first folding motor, the second folding motor, the telescopic motor, etc., which reduces the intensity and complexity of manual operation, improves the degree of automation and work efficiency of construction, and also reduces human operation errors, ensuring the stability of construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below with reference to the accompanying drawings:

[0023] Figure 1 It is a three-dimensional schematic diagram of the present invention in a preliminary state;

[0024] Figure 2 is a side view of the present invention in its preliminary state;

[0025] Figure 3 It is a schematic diagram of the connection between the rear fixing frame, the handle and the steering mechanism;

[0026] Figure 4 is a schematic diagram of the connection between the fixed rod and the folding rod;

[0027] Figure 5 This is a three-dimensional diagram of the connection between the first pressing roller, the second pressing roller, the third pressing roller and the folding mechanism. Figure 1 ;

[0028] Figure 6 yes Figure 5 A partial enlarged schematic diagram of point A in the middle;

[0029] Figure 7 is a side view of the connection between the first pressing roller, the second pressing roller, the third pressing roller and the folding mechanism;

[0030] Figure 8 is a top view of the connection between the first pressing roller, the second pressing roller, the third pressing roller and the folding mechanism;

[0031] Figure 9 This is a three-dimensional diagram of the connection between the first pressing roller, the second pressing roller, the third pressing roller and the folding mechanism. Figure 2 ;

[0032] Figure 10 yes Figure 9 A partial enlarged schematic diagram of point B in the middle;

[0033] Figure 11 It is a three-dimensional schematic diagram when the first pressing roller, the second pressing roller and the third pressing roller are all in contact with the roof slope leveling layer;

[0034] Figure 12 It is a schematic diagram of the connection between the front fixing frame, the rear fixing frame and the telescopic mechanism;

[0035] Figure 13 It is a three-dimensional schematic diagram of the telescopic mechanism;

[0036] Figure 14 This is a three-dimensional diagram of the telescopic arm Figure 1 ;

[0037] Figure 15 This is a three-dimensional diagram of the telescopic arm Figure 2 ;

[0038] Figure 16 This is a three-dimensional diagram of the telescopic arm after being cut Figure 1 ;

[0039] Figure 17 This is a three-dimensional diagram of the telescopic arm after being cut Figure 2 ;

[0040] Figure 18 It is a three-dimensional schematic diagram of the fixed arm;

[0041] Figure 19 It is a three-dimensional schematic diagram of the first-level telescopic arm;

[0042] Figure 20 It is a three-dimensional schematic diagram of the secondary telescopic arm;

[0043] Figure 21 It is a three-dimensional schematic diagram of a three-stage telescopic arm;

[0044] Figure 22 is a three-dimensional schematic diagram of the present invention in a first-level folded state;

[0045] Figure 23 is a side view of the present invention in a first-level folded state;

[0046] Figure 24 Schematic diagram of the connection between the first pressing roller, the second pressing roller, and the third pressing roller when the present invention is in the first-level folding state;

[0047] Figure 25 is a three-dimensional schematic diagram of the present invention in a secondary folded state;

[0048] Figure 26 is a side view of the present invention in a secondary folded state;

[0049] Figure 27 It is a schematic diagram of the connection between the first pressing roller, the second pressing roller, and the third pressing roller when the present invention is in the secondary folding state;

[0050] Figure 28 is a three-dimensional schematic diagram of the present invention in a minimum volume state;

[0051] Among them, 1 is the front fixing frame, 2 is the rear fixing frame, 3 is the telescopic mechanism, 4 is the first pressure roller, 5 is the second pressure roller, 6 is the third pressure roller, 7 is the handle, 8 is the walking wheel, 9 is the steering mechanism, 10 is the folding mechanism, 11 is the first folding arm, 12 is the second folding arm, 13 is the shell, 14 is the fixing rod, 15 is the folding rod, 16 is the holding rod, 17 is the outer folding seat, 18 is the inner folding seat, 19 is the locking rod, 20 is the spring, 21 is the locking groove, 22 is the steering gear, 23 is the sliding seat, 24 is the sliding rod, 25 is the steering rack, 26 is the mounting seat, 27 is the first connecting rod, 28 is the second connecting rod, 29 is the partition plate, 30 is the first rotating shaft, 31 is the second rotating shaft, 32 is the third rotating shaft, 33 is the first folding motor , 34 is the first transmission shaft, 35 is the first driving gear, 36 is the first driven gear, 37 is the chain transmission mechanism, 38 is the protective shell, 39 is the first folding gear, 40 is the second folding gear, 41 is the adapter frame, 42 is the horizontal section, 43 is the inclined section, 44 is the third connecting rod, 45 is the mounting frame, 46 is the second folding motor, 47 is the fixed arm, 48 is the first telescopic arm, 49 is the second telescopic arm, 50 is the third telescopic arm, 51 is the first rack, 52 is the second rack, 53 is the first telescopic gear, 54 is the third rack, 55 is the fourth rack, 56 is the second telescopic gear, 57 is the screw, 58 is the telescopic motor, 59 is the second transmission shaft, 60 is the second driving gear, 61 is the second driven gear, and 62 is the bevel gear. DETAILED DESCRIPTION

[0052] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. The technical solutions of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0053] like Figure 1 As shown in FIG. 28 , the present invention provides a compacting device for a roof slope leveling layer, comprising a front fixing frame 1 and a rear fixing frame 2 distributed front and back, the front fixing frame 1 and the rear fixing frame 2 being connected via a telescopic mechanism 3; a handle 7 and two running wheels 8 are provided on the rear fixing frame 2, the handle 7 and the running wheels 8 being connected via a steering mechanism 9; a first pressing roller 4, a second pressing roller 5, and a third pressing roller 6 are sequentially provided between the front fixing frame 1 and the rear fixing frame 2 from front to back, wherein the first pressing roller 4 is rotatably provided on the front fixing frame 1, the first pressing roller 4 and the third pressing roller 6 are both connected to the second pressing roller 5 via a folding mechanism 10, the folding mechanism 10 comprising a first folding arm 11 and a second folding arm 12, the first folding arm 11 being provided between the first pressing roller 4 and the second pressing roller 5, the second folding arm 12 being provided between the second pressing roller 5 and the third pressing roller 6.

[0054] The rear mounting frame 2 is a horizontally arranged box-shaped structure. A battery is housed within the rear end of the frame, and a hollow mounting cavity is provided within the front end. Two running wheels 8 are located on either side of the rear end of the frame. These running wheels 8 incorporate in-wheel motors, which rotate when the motors rotate. A housing 13 is located at the upper end of the frame, housing the steering mechanism 9.

[0055] The handle 7 includes a fixed rod 14, a folding rod 15, and a gripping rod 16. The fixed rod 14 is held vertically, with its lower end pivotally connected to the upper end of the rear fixing frame 2, and its upper end hinged to the lower end of the folding rod 15. The gripping rod 16 is arranged horizontally in the left-right direction, with the upper end of the folding rod 15 fixedly connected to the middle portion of the gripping rod 16. A gripping portion is provided at each of the left and right ends of the gripping rod 16.

[0056] Specifically, an outer folding seat 17 is fixedly mounted on the upper end of the fixed rod 14, and an inner folding seat 18 is fixedly mounted on the lower end of the folding rod 15. The inner folding seat 18 is rotatably mounted inside the outer folding seat 17, with the rotation axis between the inner folding seat 18 and the outer folding seat 17 being horizontally arranged along the left-right direction. A locking hole is provided in the outer folding seat 17, and an annular spring groove is provided in the middle of the inner wall of the locking hole. A locking rod 19 is slidably mounted inside the locking hole, and a locking ring is fixedly mounted on the outer side of the locking rod 19, and the locking ring is located inside the spring groove. A spring 20 is mounted on the outer side of the locking rod 19, and the spring 20 is located on the side of the locking ring away from the inner folding seat 18. The two ends of the spring 20 are respectively connected to the inner wall of the spring groove and the locking ring. Two locking grooves 21 are provided in the inner folding seat 18, and the inner end of the locking rod 19 is inserted into one of the locking grooves 21.

[0057] When the outer end of locking rod 19 is pulled outward, spring 20 is compressed, disengaging the inner end of locking rod 19 from locking slot 21 on inner folding seat 18, allowing folding rod 15 to rotate freely. When the other locking slot 21 on inner folding seat 18 aligns with the inner end of locking rod 19, locking rod 19 is released. Under the rebound force of spring 20, the inner end of locking rod 19 engages with locking slot 21, relocking folding rod 15. When the inner end of locking rod 19 engages the first locking slot 21, folding rod 15 remains upright. When the inner end of locking rod 19 engages the second locking slot 21, the upper end of folding rod 15 tilts backward. By inserting and removing locking rod 19, the two folding rods 15 can be controlled to switch between two angles.

[0058] The steering mechanism 9 includes a steering gear 22 , a steering rack 25 , a sliding seat 23 , a sliding rod 24 , a first connecting rod 27 , a second connecting rod 28 , and a mounting seat 26 .

[0059] A steering gear 22 is fixedly sleeved on the outer side of the lower end of the fixed rod 14. A sliding seat 23 is fixedly mounted on the upper end surface of the rear fixed frame 2 in front of the steering gear 22. A sliding rod 24 is mounted inside the sliding seat 23, sliding in the left-right direction. A steering rack 25 is fixedly mounted on the sliding rod 24 and meshes with the steering gear 22. The two running wheels 8 are respectively mounted on two mounting seats 26, which are rotatably mounted on the left and right ends of the rear fixed frame 2. A first connecting rod 27 is rotatably mounted on the left and right ends of the sliding rod 24. A second connecting rod 28 is rotatably mounted on the ends of the two first connecting rods 27 away from the sliding rod 24. The ends of the two second connecting rods 28 away from the first connecting rod 27 are fixedly connected to the two mounting seats 26. The two first connecting rods 27 and the two second connecting rods 28 are symmetrical. The two mounting seats 26 are also symmetrical.

[0060] When the handle 7 is not rotated, the steering gear 22 is located in the middle of the steering rack 25. At this time, the sliding rod 24 is located in the middle of the sliding seat 23. The two first connecting rods 27, the two second connecting rods 28, and the two mounting seats 26 all maintain bilateral symmetry. The two running wheels 8 all maintain a forward angle. At this time, when the two running wheels 8 are in operation, they can drive the entire device to move forward or backward. When the handle 7 is turned, the handle 7 drives the steering gear 22 to rotate, the steering gear 22 drives the steering rack 25 to slide to one side, the steering rack 25 drives the sliding rod 24 to slide to one side, the sliding rod 24 drives the two mounting seats 26 to rotate to the same side through the first connecting rods 27 and the second connecting rod 28 at both ends, and the two mounting seats 26 drive the two running wheels 8 to rotate to the same side, thereby achieving the steering of the entire device.

[0061] The front fixing frame 1 is a square box structure with an open lower end and a rear end. A horizontal partition plate 29 is fixedly provided at the middle height of the inner side of the front fixing frame 1 .

[0062] The first, second, and third pressure rollers 4, 5, and 6 are all cylindrical in structure, with their axes arranged horizontally in the left-right direction. The first pressure roller 4 is rotatably mounted on the outside of a first rotating shaft 30. The left and right ends of the first rotating shaft 30 are respectively rotatably connected to the lower ends of the left and right plates of the front fixing frame 1. The second pressure roller 5 is rotatably mounted on the outside of a second rotating shaft 31. The third pressure roller 6 is rotatably mounted on the outside of a third rotating shaft 32.

[0063] The two first folding arms 11 are symmetrically arranged on the left and right sides of the first pressure roller 4, and the two second folding arms 12 are symmetrically arranged on the left and right sides of the third pressure roller 6. The front ends of the two first folding arms 11 are fixedly sleeved on the left and right outer sides of the first rotating shaft 30, respectively. The first folding arms 11 are located between the first pressure roller 4 and the inner wall of the front fixed frame 1, and the two first folding arms 11 rotate synchronously with the first rotating shaft 30. The rear ends of the two second folding arms 12 are fixedly sleeved on the left and right outer sides of the third rotating shaft 32, respectively. The first folding arms 11 and second folding arms 12 on the same side are symmetrical front-to-back, and the first folding arms 11 and second folding arms 12 are of equal length.

[0064] The folding mechanism 10 further includes a first folding motor 33 , a first transmission shaft 34 , a first driving gear 35 , a first driven gear 36 , a chain transmission mechanism 37 , a first folding gear 39 , a second folding gear 40 , a third connecting rod 44 , an adapter frame 41 , a second folding motor 46 , and a mounting frame 45 .

[0065] A first folding motor 33 is fixedly mounted on the upper end of the partition plate 29. A first horizontal transmission shaft 34 is rotatably mounted above the partition plate 29. The left and right ends of the first transmission shaft 34 extend outward from the left and right sides of the front fixed frame 1, respectively. A first driving gear 35 is fixedly mounted on the output shaft of the first folding motor 33, and a first driven gear 36 is fixedly mounted on the first transmission shaft 34. The first driving gear 35 meshes with the first driven gear 36. A set of chain transmission mechanisms 37 are respectively disposed between the same end of the first transmission shaft 34 and the first rotating shaft 30. The first transmission shaft 34 drives the first rotating shaft 30 to rotate through the chain transmission mechanisms 37 at both ends. A protective shell 38 is respectively disposed on the outside of each set of chain transmission mechanisms 37. The two protective shells 38 are respectively fixedly mounted on the outer surfaces of the left and right sides of the front fixed frame 1.

[0066] A first folding gear 39 is rotatably mounted at the rear end of the first folding arm 11 via a first hinge shaft. The first hinge shaft is fixedly inserted into the interior of the first folding gear 39. The first hinge shaft is rotatably mounted at the front end of the first folding arm 11, with the left and right ends of the first hinge shaft extending outward from the first folding arm 11. A second folding gear 40 is fixedly mounted at the front end of the second folding arm 12 via a second hinge shaft. The second hinge shaft is fixedly inserted into the interior of the second folding gear 40. The second hinge shaft is fixedly mounted at the front end of the second folding arm 12, with the left and right ends of the second hinge shaft extending outward from the second folding arm 12. The first folding gear 39 meshes with the second folding gear 40.

[0067] An adapter frame 41 is disposed between the rear end of the first folding arm 11 and the front end of the second folding arm 12. The adapter frame 41 includes a horizontal section 42 and an inclined section 43. The horizontal section 42 is arranged horizontally along the front-to-back direction, and the front end of the inclined section 43 is tilted upward. The rear end of the inclined section 43 is fixedly connected to the front end of the horizontal section 42. The front and rear ends of the horizontal section 42 of the adapter frame 41 are hinged to the ends of the first hinge shaft and the second hinge shaft, respectively. A third connecting rod 44 is disposed above the first folding arm 11 and remains parallel to the first folding arm 11. The rear end of the third connecting rod 44 is hinged to the front end of the inclined section 43 of the adapter frame 41, and the front end of the third connecting rod 44 is hinged to the inner wall of the front fixed frame 1. The line connecting the hinge axis at the front end of the third link 44 and the axis of the first rotating shaft 30 is parallel to the inclined section 43 of the adapter frame 41. The line connecting the hinge axis at the front end of the third link 44 and the axis of the first rotating shaft 30, the first folding arm 11, the inclined section 43 of the adapter frame 41, and the third link 44 form a parallelogram linkage mechanism. When the first folding arm 11 rotates, the angle of the adapter frame 41 remains unchanged, that is, the horizontal section 42 of the adapter frame 41 always remains horizontal.

[0068] The left and right ends of the second rotating shaft 31 are fixedly connected to the middle portions of the horizontal sections 42 of the left and right adapter frames 41 respectively.

[0069] A mounting bracket 45 is fixedly mounted on the rear end and outside of the first folding arm 11, located in front of and outside the adapter frame 41. A second folding motor 46 is fixedly mounted on the mounting bracket 45, with its output shaft fixedly connected to one end of the first hinge shaft. This second folding motor 46 is a brake-type servo motor. When it stops, its output shaft remains stationary, preventing the first hinge shaft and the first folding gear 39 from rotating.

[0070] In the initial state, the first folding arm 11 and the second folding arm 12 are kept horizontal, and the first pressing roller 4, the second pressing roller 5 and the third pressing roller 6 are kept in contact with the ground.

[0071] The first folding motor 33 is started, and the first folding motor 33 drives the first transmission shaft 34 to rotate through the intermeshing first driving gear 35 and the first driven gear 36. The first transmission shaft 34 drives the first rotating shaft 30 to rotate through the chain transmission mechanism 37 at both ends. The first rotating shaft 30 drives the two first folding arms 11 to rotate upward by 60 degrees. When the first folding arms 11 rotate upward, because the line connecting the hinge axis of the front end of the third connecting rod 44 and the axis of the first rotating shaft 30, the first folding arm 11, the inclined section 43 of the adapter frame 41, and the third connecting rod 44 form a parallelogram linkage mechanism, the horizontal section 42 of the adapter frame 41 remains horizontal during the upward lifting process of the adapter frame 41, and the second pressure roller 5 remains separated from the ground. During the upward rotation of the first folding arm 11, the second folding motor 46 is always stopped, and the first folding gear 39 is always unable to rotate. This is equivalent to the first folding gear 39 being fixed to the rear end of the first folding arm 11, and the second folding gear 40 being fixed to the front end of the second folding arm 12. The first folding gear 39 and the second folding gear 40 are meshed with each other, so that the second folding arm 12 always maintains front-to-back symmetry with the first folding arm 11, and the third pressure roller 6 always maintains rolling contact with the ground. At this time, the first pressure roller 4, the second pressure roller 5, and the third pressure roller 6 form a triangular layout. The first pressure roller 4 and the third pressure roller 6 maintain rolling contact with the ground, and the second pressure roller 5 is separated from the ground. This is the first-level folding state.

[0072] Start the second folding motor 46, and the second folding motor 46 drives the first folding gear 39 to rotate through the first hinge shaft. Since the second folding gear 40 is engaged with the first folding gear 39, and the second folding gear 40 is fixed to the front end of the second folding arm 12, it drives the rear end of the second folding arm 12 to rotate upward around the second hinge shaft, so that the third pressure roller 6 is separated from the ground until the third pressure roller 6 moves above the second pressure roller 5. At this time, it is in the secondary folding state.

[0073] By controlling the second folding motor 46 to rotate in the reverse direction, the folding mechanism 10 can be controlled to change from the secondary folding state to the primary folding state.

[0074] By controlling the second folding motor 46 to stop running and controlling the first folding motor 33 to rotate in the reverse direction, the folding mechanism 10 can be controlled to change from the primary folding state to the preliminary state.

[0075] The telescopic mechanism 3 includes a telescopic motor 58 , a second transmission shaft 59 , a second driving gear 60 , a second driven gear 61 , a telescopic arm, and a screw 57 .

[0076] Two bilaterally symmetrical telescopic arms are provided between the front fixing frame 1 and the rear fixing frame 2. The front ends of the two telescopic arms are fixedly connected to the left and right panels of the front fixing frame 1, respectively, and the rear ends of the two telescopic arms are fixedly connected to the left and right sides of the front end surface of the rear fixing frame 2, respectively.

[0077] The telescopic arm includes a fixed arm 47, a first-level telescopic arm 48, a second-level telescopic arm 49, and a third-level telescopic arm 50. The fixed arm 47, the first-level telescopic arm 48, the second-level telescopic arm 49, and the third-level telescopic arm 50 are all square cylindrical structures extending forward and backward. The rear end of the fixed arm 47 is fixedly arranged on the front end surface of the rear side fixed frame 2, the rear end of the first-level telescopic arm 48 is slidably inserted into the front end opening of the fixed arm 47, the rear end of the second-level telescopic arm 49 is slidably inserted into the front end opening of the first-level telescopic arm 48, and the rear end of the third-level telescopic arm 50 is slidably inserted into the front end opening of the second-level telescopic arm 49.

[0078] A first rack 51 extending horizontally back and forth is fixedly mounted on the left and right inner walls of the fixed arm 47, with the two first racks 51 being symmetrical. A second rack 52 extending horizontally back and forth is fixedly mounted on the left and right outer walls of the secondary telescopic arm 49, with the two second racks 52 being symmetrical. A first connecting groove extending horizontally back and forth is provided on the left and right side walls of the primary telescopic arm 48, with a first telescopic gear 53 rotatably mounted within each first connecting groove. The first telescopic gear 53 meshes with the first rack 51 and the second rack 52 on the same side.

[0079] A third rack 54 extending horizontally forward and backward is fixedly mounted on the left and right inner walls of the first telescopic arm 48, with the two third racks 54 being symmetrical. A fourth rack 55 extending horizontally forward and backward is fixedly mounted on the left and right outer walls of the third telescopic arm 50, with the two fourth racks 55 being symmetrical. A second connecting groove extending horizontally forward and backward is provided on the left and right side walls of the second telescopic arm 49, with a second telescopic gear 56 rotatably mounted within each second connecting groove. The second telescopic gear 56 meshes with the third rack 54 and fourth rack 55 on the same side.

[0080] A horizontal screw rod 57 is screwed onto the rear side panel of each primary telescopic arm 48. The rear ends of the two screw rods 57 are rotatably inserted into the mounting cavity of the rear mounting frame 2. A telescopic motor 58 is fixedly mounted within the mounting cavity of the rear mounting frame 2. A second horizontal second transmission shaft 59 is also rotatably mounted within the mounting cavity of the rear mounting frame 2. A second driving gear 60 is fixedly mounted on the output shaft of the telescopic motor 58. A second driven gear 61 is fixedly mounted on the second transmission shaft 59, and the second driving gear 60 meshes with the second driven gear 61. The ends of the second transmission shaft 59 are connected to the rear ends of the two screw rods 57 via a pair of bevel gears 62.

[0081] Start the telescopic motor 58, which drives the second transmission shaft 59 to rotate through the second driving gear 60 and the second driven gear 61 that are meshed with each other. The second transmission shaft 59 drives the two screws 57 to rotate through a pair of bevel gears 62 at both ends. Since the screws 57 are screwed to the rear side plate of the first-stage telescopic arm 48, the first-stage telescopic arm 48 of the two telescopic arms is driven to slide inside the fixed arm 47. The first-stage telescopic arm 48 drives the second-stage telescopic arm 49 and the third-stage telescopic arm 50 inside it to slide at the same time. When the first-stage telescopic arm 48 slides, the first telescopic gear 53 slides synchronously with the first-stage telescopic arm 48; since the first telescopic gear 53 is engaged with the first rack 51 on the inner wall of the fixed arm 47, the first telescopic gear 53 keeps rotating during the process of synchronous sliding with the first-stage telescopic arm 48; since the first telescopic gear 53 is simultaneously engaged with the second rack 52 on the outer wall of the second-stage telescopic arm 49, the rotating first telescopic gear 53 drives the second-stage telescopic arm 49 to slide relative to the first-stage telescopic arm 48, and the second-stage telescopic arm 49 drives the third-stage telescopic arm 50 inside it to slide synchronously. When the secondary telescopic arm 49 slides relative to the primary telescopic arm 48, the second telescopic gear 56 slides synchronously with the secondary telescopic arm 49; since the second telescopic gear 56 is engaged with the third rack 54 on the inner wall of the primary telescopic arm 48, the second telescopic gear 56 keeps rotating during the synchronous sliding of the secondary telescopic arm 49; since the second telescopic gear 56 is simultaneously engaged with the fourth rack 55 on the outer wall of the tertiary telescopic arm 50, the rotating second telescopic gear 56 drives the tertiary telescopic arm 50 to slide relative to the secondary telescopic arm 49.

[0082] When the first telescopic arm 48 slides outward from the fixed arm 47, the second telescopic arm 49 slides outward from the first telescopic arm 48, and the third telescopic arm 50 slides outward from the second telescopic arm 49. The overall length of the telescopic arm is lengthened, and the distance between the front fixing frame 1 and the rear fixing frame 2 becomes larger.

[0083] When the first telescopic arm 48 is retracted toward the inside of the fixed arm 47, the second telescopic arm 49 is retracted toward the inside of the first telescopic arm 48, and the third telescopic arm 50 is retracted toward the inside of the second telescopic arm 49, the overall length of the telescopic arm becomes shorter, and the distance between the front fixing frame 1 and the rear fixing frame 2 becomes smaller.

[0084] The battery is electrically connected to the hub motor, the first folding motor 33 , the second folding motor 46 , and the telescopic motor 58 inside the running wheel 8 .

[0085] The working principle of the present invention is:

[0086] When the roof slope layer needs to be constructed, the compaction device needs to be transported to the roof. However, the internal space of the construction elevator is limited, so the compaction device needs to be folded to the minimum volume (such as Figure 28 Only when the folding lever 15 of the control handle 7 is in the vertical position, the folding mechanism 10 is in the secondary folding position, and the left and right telescopic arms are in the shortest position, the compacting device is now at its smallest size, making it easy to move into the construction elevator.

[0087] When the compacting device is moved onto the roof, the folding rod 15 of the control handle 7 is in a backward tilted state (such as Figure 25 As shown), it is convenient for construction workers to hold the handle 7. Then the folding mechanism 10 is controlled to change according to the degree of compaction required.

[0088] If it is necessary to press it very hard, the folding mechanism 10 is controlled to be in the secondary folding state (eg Figure 25 、 26 As shown), while controlling the lengths of the left and right telescopic arms to remain unchanged, the second pressing roller 5 and the third pressing roller 6 are now separated from the roof slope leveling layer, and the gravity of the second pressing roller 5 and the third pressing roller 6 acts on the first pressing roller 4, so that the pressure exerted by the first pressing roller 4 on the roof slope leveling layer is maximized, thus ensuring that the roof slope leveling layer is pressed particularly firmly.

[0089] If a firmer press is required, the left and right telescopic arms are controlled to be extended for a certain distance, and then the folding mechanism 10 is controlled to be adjusted to the first-level folding state (such as Figure 22 、 23 As shown), the left and right telescopic arms are shortened again for a distance. At this time, the first pressing roller 4 and the third pressing roller 6 are in contact with the roof slope layer, and the second pressing roller 5 is separated from the roof slope layer. The gravity of the second pressing roller 5 acts on the first pressing roller 4 and the third pressing roller 6 at the same time, so that the pressure exerted by the first pressing roller 4 and the third pressing roller 6 on the roof slope layer is relatively large, which can ensure that the roof slope layer is pressed more firmly.

[0090] If the pressing is generally solid, the left and right telescopic arms are controlled to be extended to the longest state, and then the folding mechanism 10 is controlled to be adjusted to the initial state (such as Figure 1 、 2 As shown), at this time, the first pressing roller 4, the second pressing roller 5 and the third pressing roller 6 are all in contact with the roof slope layer, and the gravity of the first pressing roller 4, the second pressing roller 5 and the third pressing roller 6 acts evenly on the roof slope layer, so that the pressure of the first pressing roller 4, the second pressing roller 5 and the third pressing roller 6 on the roof slope layer is minimized, which can ensure the general solidity of the roof slope layer.

[0091] Once the folding mechanism 10 is adjusted, the operator grips the handle 7 and controls the two running wheels 8 to start moving, thereby controlling the entire device to move. As the compaction device moves, the rollers in contact with the roof slope layer begin to rotate, thereby compacting the roof slope layer. While the compaction device is moving, the operator turns the handle 7 to control the steering mechanism 9, which in turn controls the two running wheels 8 to rotate in the same direction, steering the compaction device and thereby better compacting the roof slope layer.

[0092] When the roof slope layer is compacted, adjust the compaction device to the minimum volume state (such as Figure 28 As shown in the figure, the compacting device can be transported down through the construction elevator.

[0093] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A compacting device for a roof slope leveling layer, characterized by: The invention comprises a front fixing frame (1) and a rear fixing frame (2) which are arranged front and back, wherein the front fixing frame (1) and the rear fixing frame (2) are connected via a telescopic mechanism (3); a handle (7) and two running wheels (8) are provided on the rear fixing frame (2), and the handle (7) and the running wheels (8) are connected via a steering mechanism (9); a first pressing roller (4), a second pressing roller (5), a third pressing roller (6) and a fourth pressing roller (7) are provided between the front fixing frame (1) and the rear fixing frame (2) from front to back. Pressure rollers (6), wherein the first pressure roller (4) is rotatably arranged on the front fixed frame (1), the first pressure roller (4) and the third pressure roller (6) are connected to the second pressure roller (5) through a folding mechanism (10), the folding mechanism (10) includes a first folding arm (11) and a second folding arm (12), the first folding arm (11) is arranged between the first pressure roller (4) and the second pressure roller (5), and the second folding arm (12) is arranged between the second pressure roller (5) and the third pressure roller (6).

2. A compacting device for a roof slope leveling layer according to claim 1, characterized in that: A battery is provided inside the rear end of the rear fixing frame (2), and a mounting cavity is provided inside the front end of the rear fixing frame (2); two running wheels (8) are provided on the left and right sides of the rear end of the rear fixing frame (2), and the running wheels (8) have hub motors inside. A housing (13) is provided at the upper end of the rear fixing frame (2), and the steering mechanism (9) is provided inside the housing (13).

3. The compacting device for a roof slope leveling layer according to claim 1, characterized in that: The handle (7) includes a fixed rod (14), a folding rod (15), and a gripping rod (16). The fixed rod (14) is kept vertical, the lower end of the fixed rod (14) is rotatably connected to the upper end surface of the rear fixing frame (2), and the upper end of the fixed rod (14) is hinged to the lower end of the folding rod (15); the gripping rod (16) is horizontally arranged along the left and right directions, the upper end of the folding rod (15) is fixedly connected to the middle part of the gripping rod (16), and a gripping portion is respectively provided at the left and right ends of the gripping rod (16).

4. A compacting device for a roof slope leveling layer according to claim 3, characterized in that: The steering mechanism (9) includes a steering gear (22), a steering rack (25), a sliding seat (23), a sliding rod (24), a first connecting rod (27), a second connecting rod (28), and a mounting seat (26); the steering gear (22) is fixedly sleeved on the outer side of the lower end of the fixed rod (14); the sliding seat (23) is fixedly provided on the upper end surface of the rear side fixed frame (2) in front of the steering gear (22); a sliding rod (24) is provided inside the sliding seat (23) so as to slide along the left and right directions; the steering rack (25) is fixedly provided on the sliding rod (24); The steering rack (25) is meshed with the steering gear (22); the two running wheels (8) are respectively mounted on the two mounting seats (26), and the two mounting seats (26) are respectively rotatably mounted on the left and right ends of the rear fixed frame (2); a first connecting rod (27) is rotatably mounted on the left and right ends of the sliding rod (24), and a second connecting rod (28) is rotatably mounted on the ends of the two first connecting rods (27) away from the sliding rod (24), and the ends of the two second connecting rods (28) away from the first connecting rod (27) are respectively fixedly connected to the two mounting seats (26).

5. The compacting device for a roof slope leveling layer according to claim 1, characterized in that: The front fixing frame (1) is a square box structure with an open lower end and a rear end, and a partition plate (29) is fixedly provided at a height of the middle portion of the inner side of the front fixing frame (1); the first pressing roller (4), the second pressing roller (5), and the third pressing roller (6) are all cylindrical structures, the first pressing roller (4) is rotatably sleeved on the outer side of the first rotating shaft (30), and the left and right ends of the first rotating shaft (30) are rotatably inserted into the left plate and the lower end of the right plate of the front fixing frame (1); the second pressing roller (5) is rotatably sleeved on the outer side of the first rotating shaft (30). The outer side of the second rotating shaft (31); the third pressing roller (6) is rotatably sleeved on the outer side of the third rotating shaft (32); the front ends of the two first folding arms (11) are fixedly sleeved on the outer sides of the left and right ends of the first rotating shaft (30), and the rear ends of the two second folding arms (12) are fixedly sleeved on the outer sides of the left and right ends of the third rotating shaft (32); the first folding arm (11) and the second folding arm (12) on the same side are symmetrical in front and back, and the lengths of the first folding arm (11) and the second folding arm (12) are kept equal.

6. The compacting device for a roof slope leveling layer according to claim 5, characterized in that: The folding mechanism (10) further comprises a first folding motor (33), a first transmission shaft (34), a first driving gear (35), a first driven gear (36), a chain transmission mechanism (37), a first folding gear (39), and a second folding gear (40); the first folding motor (33) is fixedly provided at the upper end of the partition plate (29); a left and right horizontal first transmission shaft (34) is rotatably provided above the partition plate (29), and the left and right ends of the first transmission shaft (34) extend to the outside of the left plate and the right plate of the front fixed frame (1) respectively; a first driving gear (35) is fixedly provided on the output shaft of the first folding motor (33), a first driven gear (36) is fixedly provided on the first transmission shaft (34), and a first driven gear (39) is fixedly provided on the second folding gear (40). The driving gear (35) is meshed with the first driven gear (36); a group of chain transmission mechanisms (37) are respectively provided between the same end of the first transmission shaft (34) and the first rotating shaft (30); a first folding gear (39) is rotatably provided at the rear end of the first folding arm (11) through a first hinge shaft, the first hinge shaft is fixedly inserted into the inside of the first folding gear (39), the first hinge shaft is rotatably provided at the front end of the first folding arm (11), a second folding gear (40) is fixedly provided at the front end of the second folding arm (12) through a second hinge shaft, the second hinge shaft is fixedly inserted into the inside of the second folding gear (40), the second hinge shaft is fixedly provided at the front end of the second folding arm (12), and the first folding gear (39) is meshed with the second folding gear (40).

7. The compacting device for a roof slope leveling layer according to claim 6, characterized in that: The folding mechanism (10) further includes a third connecting rod (44) and an adapter frame (41); the adapter frame (41) is provided between the rear end of the first folding arm (11) and the front end of the second folding arm (12); the adapter frame (41) includes a horizontal section (42) and an inclined section (43); the horizontal section (42) is horizontally provided along the front-back direction; the front end of the inclined section (43) is inclined upward; the rear end of the inclined section (43) is fixedly connected to the front end of the horizontal section (42); the front and rear ends of the horizontal section (42) of the adapter frame (41) are hinged to the ends of the first hinge shaft and the second hinge shaft respectively; A third connecting rod (44) is provided above the folding arm (11); the rear end of the third connecting rod (44) is hinged to the front end of the inclined section (43) of the adapter frame (41), and the front end of the third connecting rod (44) is hinged to the inner wall of the front fixed frame (1); a connecting line between the hinge axis of the front end of the third connecting rod (44) and the axis of the first rotating shaft (30), the first folding arm (11), the inclined section (43) of the adapter frame (41), and the third connecting rod (44) forms a parallelogram connecting rod mechanism; the left and right ends of the second rotating shaft (31) are fixedly connected to the middle parts of the horizontal sections (42) of the left and right adapter frames (41), respectively.

8. The compacting device for a roof slope leveling layer according to claim 7, characterized in that: The folding mechanism (10) further comprises a mounting frame (45) and a second folding motor (46); the mounting frame (45) is fixedly arranged on the outside of the rear end of the first folding arm (11), and the mounting frame (45) is located on the outside of the front of the adapter frame (41); the second folding motor (46) is fixedly arranged on the mounting frame (45), and the output shaft of the second folding motor (46) is fixedly connected to one end of the first hinge shaft.

9. The compacting device for a roof slope leveling layer according to claim 2, characterized in that: The telescopic mechanism (3) includes a telescopic arm; two telescopic arms are symmetrically arranged between the front fixing frame (1) and the rear fixing frame (2); the front ends of the two telescopic arms are fixedly connected to the left and right sides of the front fixing frame (1), and the rear ends of the two telescopic arms are fixedly connected to the left and right sides of the front end surface of the rear fixing frame (2); the telescopic arm includes a fixed arm (47), a first telescopic arm (48), a second telescopic arm (49), and a third telescopic arm (50); the rear end of the fixed arm (47) is fixedly arranged on the front end surface of the rear fixing frame (2); the rear end of the first telescopic arm (48) is slidably inserted into the interior of the front end opening of the fixed arm (47); the rear end of the second telescopic arm (49) is slidably inserted into the interior of the front end opening of the first telescopic arm (48); and the rear end of the third telescopic arm (50) is slidably inserted into the interior of the front end opening of the second telescopic arm (49); a first rack (51) extending horizontally forward and backward is fixedly arranged on the left and right inner walls of the fixed arm (47), and a first rack (51) extending horizontally forward and backward is fixedly arranged on the left and right inner walls of the fixed arm (47). A second rack (52) extending horizontally forward and backward is fixedly provided on the left and right outer walls of the retractable arm (49), a first connecting groove extending horizontally forward and backward is provided on the left and right side walls of the first telescopic arm (48), a first telescopic gear (53) is rotatably provided in each first connecting groove, and the first telescopic gear (53) is meshed with the first rack (51) and the second rack (52) on the same side; a third rack (54) extending horizontally forward and backward is fixedly provided on the left and right inner walls of the first telescopic arm (48), a fourth rack (55) extending horizontally forward and backward is fixedly provided on the left and right outer walls of the third telescopic arm (50), a second connecting groove extending horizontally forward and backward is provided on the left and right side walls of the second telescopic arm (49), a second telescopic gear (56) is rotatably provided in each second connecting groove, and the second telescopic gear (56) is meshed with the third rack (54) and the fourth rack (55) on the same side.

10. The compacting device for a roof slope leveling layer according to claim 9, characterized in that: The telescopic mechanism (3) further comprises a telescopic motor (58), a second transmission shaft (59), a second driving gear (60), a second driven gear (61), and a screw (57); a front-to-rear horizontal screw (57) is screwed onto the rear side plate of each first-stage telescopic arm (48), and the rear ends of the two screws (57) are rotatably inserted into the mounting cavity of the rear fixing frame (2); a telescopic motor (58) is fixedly arranged inside the mounting cavity of the rear fixing frame (2), and a left-to-right horizontal second transmission shaft (59) is also rotatably arranged inside the mounting cavity of the rear fixing frame (2); a second driving gear (60) is fixedly arranged on the output shaft of the telescopic motor (58), and a second driven gear (61) is fixedly arranged on the second transmission shaft (59), and the second driving gear (60) is meshed with the second driven gear (61); and both ends of the second transmission shaft (59) are transmission-connected to the rear ends of the two screws (57) through a pair of bevel gears (62).

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