Pavement maintenance film laying device

Abstract

The utility model provides a pavement maintenance film laying device which comprises a vehicle body frame and further comprises a wheel set. A film releasing mechanism; film rolling; and a synchronous transmission mechanism. The rotating shaft of the film unwinding mechanism is in transmission connection with the transmission shaft of one of the wheel sets through the synchronous transmission mechanism, so that unwinding of a film roll by the film unwinding mechanism is associated with the moving speed of the wheel sets, the unwinding speed can be matched with the moving speed, unwinding work is smoother, and meanwhile compared with traditional unwinding through tension, the unwinding efficiency is improved. The traction force on the die body is effectively reduced, and unnecessary damage to the die body is avoided.

Description

Technical Field

[0001] This utility model relates to the field of road maintenance, and in particular to a road maintenance film laying device. Background Technology

[0002] In existing road maintenance membrane laying devices, the unwinding structure typically relies on the tension of the membrane material itself for unfolding. That is, as the vehicle moves forward, the membrane material is released from the roll due to traction, with tension rollers or braking devices providing a certain degree of tension control. However, this traditional method has significant limitations: First, during the unwinding process, the membrane material needs to withstand considerable traction, which can easily cause tensile deformation or even breakage, especially for some maintenance membranes with lower strength or thinner thickness; second, due to uneven friction between the membrane material and the ground, or changes in vehicle speed, problems such as unstable membrane tension, uneven laying, and wrinkles are prone to occur, affecting construction quality. Therefore, a road maintenance membrane laying device is proposed to solve the above problems. Utility Model Content

[0003] The main purpose of this utility model is to provide a road maintenance membrane laying device to solve the problems that existing membrane laying devices require the membrane material to withstand a large traction force during the unwinding process, and are prone to unstable membrane tension, uneven laying, wrinkles, etc., which affect the construction quality.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a road maintenance mulching device, including a vehicle frame, and further including:

[0005] The wheelset consists of two wheels, arranged front and rear at the bottom of the vehicle frame. The wheelset includes two mounting seats symmetrically arranged at the corners of the vehicle frame. A drive shaft is rotatably arranged between the two mounting seats, and the end of the drive shaft passes through the mounting seat to provide a wheel.

[0006] The film-laying mechanism consists of two parts, which are symmetrically arranged in the middle of the vehicle frame. The film-laying mechanism includes a rotating seat arranged on the side of the vehicle frame. A rotating shaft is rotatably and through the rotating seat, and a docking structure is provided in the rotating shaft.

[0007] The membrane roll is positioned between two membrane delivery mechanisms via a docking structure.

[0008] The synchronous transmission mechanism consists of two gears, which are respectively located between two rotating shafts and the transmission shaft of the same gear set. The synchronous transmission mechanism includes a first gear and a second gear respectively located outside the rotating shaft and the transmission shaft. A connecting plate is provided between the rotating seat and the mounting seat. A transmission gear is rotatably mounted on the connecting plate. The transmission gear meshes with the first gear and the second gear simultaneously.

[0009] In a preferred embodiment, the membrane roll includes a winding shaft, and the membrane body is wound around the outside of the winding shaft.

[0010] In the preferred embodiment, the docking structure includes a telescopic cavity disposed in the rotating shaft. Both ends of the telescopic cavity are open, and the diameter of the outer opening is smaller than its own diameter. The end of the winding shaft is provided with a docking cavity that can communicate with the telescopic cavity. Multiple communicating docking grooves are provided on the inner end of the telescopic cavity and the inner wall surface of the docking cavity. A docking shaft that can be inserted into the docking cavity is telescopically disposed in the telescopic cavity. A limiting strip that slides with the docking groove is provided on the outside of the docking shaft. The other end of the docking shaft passes through the outer end of the telescopic cavity through a connecting rod and is connected to a limiting plate. A handle is provided on the outside of the limiting plate. A telescopic spring is sleeved on the outside of the connecting rod. The telescopic spring is located between the docking shaft and the inner wall of the outer end of the telescopic cavity.

[0011] In the preferred embodiment, a pin hole is provided through the inner end of the telescopic cavity and the telescopic cavity itself. The mating shaft is provided with through holes corresponding to the two pin holes respectively, and bolts and nuts are provided between the pin holes and the through holes.

[0012] When the docking shaft is fully retracted into the telescopic cavity, the pin hole at the front end aligns with the through hole on it.

[0013] In the preferred embodiment, a pressing mechanism is also provided on the vehicle body frame, which includes two spring telescopic rods symmetrically arranged at the bottom of the vehicle body frame, and a pressing rod arranged at the telescopic ends of the two spring telescopic rods.

[0014] In the preferred embodiment, the spring telescopic rod includes an outer sleeve with one end open, and symmetrical limit grooves are provided on the inner wall surfaces of the outer sleeve. A telescopic shaft is movably inserted into the open end of the outer sleeve, and a limit block that slides with the limit groove is provided outside the insertion end of the telescopic shaft. A tension spring that abuts against the insertion end of the telescopic shaft is provided in the outer sleeve.

[0015] In the preferred embodiment, the vehicle frame is also equipped with a hoisting mechanism for hoisting the film roll. The hoisting mechanism includes two symmetrically arranged hoisting components. Each hoisting component includes a lifting telescopic cylinder located at the top of the vehicle frame. The telescopic end of the lifting telescopic cylinder is equipped with a rotating seat. A rotating shaft is rotatably threaded through the rotating seat. The end of the rotating shaft is equipped with a hook rod for hooking the take-up shaft.

[0016] In the preferred embodiment, the bottom of the vehicle frame is also provided with a mounting bracket opposite to the hook rod hook. A push cylinder is installed on the mounting bracket, and the telescopic end of the push cylinder is provided with a push part for pushing the hook rod.

[0017] In the preferred embodiment, a handlebar is also provided on one side of the top of the vehicle frame.

[0018] This utility model provides a road maintenance film laying device. By connecting the rotating shaft of the film laying mechanism with the transmission shaft of one of the wheel sets through a synchronous transmission mechanism, the unwinding speed of the film roll by the film laying mechanism can be correlated with the moving speed of the wheel set. This allows the unwinding speed to match the moving speed, making the unwinding work smoother. At the same time, compared with the traditional method of unwinding by tension, it effectively reduces the traction force on the mold body and avoids unnecessary damage to the mold body. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is an overall structural diagram of the present invention;

[0021] Figure 2 This is a connection structure diagram of one of the wheel sets, film feeding mechanism, film roll and synchronous transmission mechanism of this utility model;

[0022] Figure 3 This is a connection structure diagram of the synchronous transmission mechanism of this utility model;

[0023] Figure 4 This is a partially exploded cross-sectional view of the docking structure of this utility model;

[0024] Figure 5 This is a structural diagram of the film pressing mechanism of this utility model;

[0025] Figure 6 This is a half-sectional structural diagram of the spring telescopic rod of this utility model;

[0026] Figure 7 This is a structural diagram of the hoisting mechanism of this utility model;

[0027] In the diagram: 1. Vehicle frame; 2. Wheel set; 201. Mounting seat; 202. Drive shaft; 3. Film unloading mechanism; 301. Rotating seat; 302. Rotating shaft; 303. Docking structure; 3030. Telescopic cavity; 3031. Docking groove; 3032. Docking shaft; 3033. Limiting strip; 3034. Connecting rod; 3035. Limiting plate; 3036. Handle; 3037. Telescopic spring; 3038. Through hole; 3039. Pin hole; 3040. Bolt and nut; 3041. Film roll; 401. Rewinding shaft; 402. Film body. Synchronous transmission mechanism 5; First gear 501; Second gear 502; Connecting plate 503; Transmission gear 504; Pressing mechanism 6; Spring telescopic rod 601; Outer sleeve 6010; Limiting groove 6011; Telescopic shaft 6012; Limiting block 6013; Tension spring 6014; Pressure rod 602; Lifting mechanism 7; Lifting telescopic cylinder 701; Rotating seat 702; Rotating shaft 703; Hook rod 704; Mounting bracket 705; Pushing cylinder 706; Pushing part 707; Handlebar 8. Detailed Implementation

[0028] Example 1

[0029] like Figure 1-4 As shown, a road maintenance film laying device includes a vehicle frame 1, a wheel set 2, a film laying mechanism 3, a film roll 4, and a synchronous transmission mechanism 5.

[0030] The wheel set 2 consists of two wheels, which are arranged front and rear at the bottom of the vehicle frame 1 to form an effective walking mechanism. The wheel set 2 specifically includes two mounting seats 201 symmetrically arranged at the corners of the vehicle frame 1. A drive shaft 202 is rotatably arranged between the two mounting seats 201. The end of the drive shaft 202 passes through the mounting seat 201 and is provided with a wheel body 2, thereby realizing the synchronous rotation between the two wheels through the drive shaft 202.

[0031] There are two film-laying mechanisms 3, which are symmetrically arranged in the middle of the vehicle frame 1. The film-laying mechanism 3 includes a rotating seat 301 arranged on the side of the vehicle frame 1. A rotating shaft 302 is rotatably arranged through the rotating seat 301, and a docking structure 303 is arranged in the rotating shaft 302.

[0032] The membrane roll 4 is set between the two film unwinding mechanisms 3 through the docking structure 303, and the unwinding is achieved by the rotation of the rotating shaft 302 on the rotating seat 301. It should be noted that after the membrane roll 4 is installed, its height is higher than that of the wheel set 2.

[0033] There are two synchronous transmission mechanisms 5, which are respectively set between the two rotating shafts 302 and the transmission shaft 202 of the same wheel set 2. The unwinding of the film roll 4 and the movement of the wheel set 2 are associated through the synchronous transmission mechanism 5. In this embodiment, the synchronous transmission mechanism 5 is set between the rotating shaft 302 and the transmission shaft 202 of the rear wheel set 2.

[0034] The synchronous transmission mechanism 5 specifically includes a first gear 501 and a second gear 502 respectively disposed outside the rotating shaft 302 and the transmission shaft 202. A connecting plate 503 is disposed between the rotating seat 301 and the mounting seat 201. A transmission gear 504 is rotatably disposed on the connecting plate 503. The transmission gear 504 meshes with the first gear 501 and the second gear 502 simultaneously.

[0035] In this embodiment, both the mounting base 201 and the rotating base 301 are inverted "L"-shaped plates, and bearings for rotatably mounting the transmission shaft 202 and the rotating shaft 302 are also provided on them.

[0036] This design allows the unwinding of the membrane roll 4 to be linked to the movement of the wheel set 2 via the synchronous transmission mechanism 5, thereby reducing the demand for traction and preventing damage to the membrane roll 4 during the pulling process. At the same time, it allows the unwinding speed to change with the speed of the wheels, avoiding problems such as unstable membrane tension, uneven laying, and wrinkles when the vehicle speed changes.

[0037] In a preferred embodiment, the membrane roll 4 includes a winding shaft 401, and the membrane body 402 is wound around the outside of the winding shaft 401.

[0038] In a preferred embodiment, to facilitate the assembly and disassembly of the membrane roll 4, the docking structure 303 includes a telescopic cavity 3030 disposed in the rotating shaft 302. Both ends of the telescopic cavity 3030 are open, with the outer opening diameter smaller than its own diameter and the inner diameter the same as its own diameter. The end of the winding shaft 401 is provided with a docking cavity 3031 that can communicate with the telescopic cavity 3030. Multiple communicative docking grooves 3032 are provided on the inner walls of both the inner end of the telescopic cavity 3030 and the docking cavity 3031. In this embodiment, the number of docking grooves 3032 is four. The telescopic cavity 3030 is retractably provided with... A docking shaft 3033 is inserted into the docking cavity 3031. A limiting strip 3034 is provided on the outside of the docking shaft 3033 to slide with the docking groove 3032. The other end of the docking shaft 3033 passes through the outer end of the telescopic cavity 3030 through the connecting rod 3035 and is connected to the limiting plate 3036. A handle 3037 is provided on the outer side of the limiting plate 3036. A telescopic spring 3038 is fitted on the outside of the connecting rod 3035. The telescopic spring 3038 is located between the docking shaft 3033 and the inner wall of the outer end of the telescopic cavity 3030. The diameter of the telescopic spring 3038 is larger than the diameter of the outer end opening of the telescopic cavity 3030.

[0039] This design allows the docking shaft 3033 to remain inserted into the docking cavity 3031 under the tension of the telescopic spring 3038, connecting the rotating shaft 302 and the take-up shaft 401. At the same time, the connection between the limiting strip 3034 and the docking groove 3032 allows the rotating shaft 302 and the take-up shaft 401 to rotate synchronously. When it is necessary to remove the film roll 4, the docking shaft 3033 can be pulled outward by the handle 3037 to remove it from the docking cavity 3031, thereby severing the connection between the two.

[0040] In the preferred embodiment, to ensure the stability of the connection, a pin hole 3040 is provided through the inner end of the telescopic cavity 3030 and the telescopic cavity 3030. The mating shaft 3033 is provided with through holes 3039 corresponding to the two pin holes 3040 respectively. A bolt and nut 3041 is provided between the pin hole 3040 and the through hole 3039, so that the stability of the connection between the two can be further enhanced by the setting of the bolt and nut 3041.

[0041] In addition, when the docking shaft 3033 is fully retracted into the telescopic cavity 3030, the pin hole 3040 at the front end is aligned with the through hole 3039 on it. Thus, by installing bolts and nuts 3041 in the through hole 3039 and pin hole 3040 at this time, the docking shaft 3033 is kept in the unlocked state, which facilitates the installation of the membrane roll 4 next time.

[0042] In the preferred embodiment, a handle 8 is also provided on one side of the top of the vehicle frame 1 to facilitate the movement and operation of the staff.

[0043] Example 2

[0044] Further explanation in conjunction with Example 1, such as Figure 1 , 5 As shown in Figure 6, the vehicle frame 1 is also equipped with a film pressing mechanism 6. The film pressing mechanism 6 presses the unwound film roll 4 to further improve the flatness of the unwound roll. It includes two spring telescopic rods 601 symmetrically arranged at the bottom of the vehicle frame 1, and a pressure rod 602 arranged at the telescopic ends of the two spring telescopic rods 601. Under the tension of the spring telescopic rods 601, the pressure rod 602 provides a downward pressing force to the unwound mold body 402, thereby maintaining the tension of the mold body 402 when the front end of the mold body 402 is fixed during unwound roll, so that the mold body 402 is flatter during the unwound roll process.

[0045] In a preferred embodiment, the spring telescopic rod 601 includes an outer sleeve 6010 with one end open. Limiting grooves 6011 are symmetrically arranged on the inner wall surfaces of the outer sleeve 6010. A telescopic shaft 6012 is movably inserted into the open end of the outer sleeve 6010. A limiting block 6013 is provided outside the insertion end of the telescopic shaft 6012, which slides with the limiting groove 6011. A tension spring 6014 is provided in the outer sleeve 6010, which abuts against the insertion end of the telescopic shaft 6012. With this design, the tension spring 6014 can provide the tension required to keep the telescopic shaft 6012 in the extended state.

[0046] Example 3

[0047] Further explanation in conjunction with Examples 1 and 2, such as Figure 1 and 7 As shown in the structure, since the installation position of the membrane roll 4 is a certain distance from the ground, and the membrane roll 4 has a certain weight, in order to facilitate the installation of the membrane roll 4, the vehicle frame 1 in this embodiment is also provided with a hoisting mechanism 7 for hoisting the membrane roll 4. The hoisting mechanism 7 can lift the membrane roll 4 from the ground to the installation height, thereby avoiding manual lifting.

[0048] The hoisting mechanism 7 includes two symmetrically arranged hoisting components. Each hoisting component includes a lifting telescopic cylinder 701 located on the top of the vehicle frame 1. The telescopic end of the lifting telescopic cylinder 701 is provided with a rotating seat 702. A rotating shaft 703 is rotatably passed through the rotating seat 702. The end of the rotating shaft 703 is provided with a hook rod 704 that can hook the winding shaft 401.

[0049] With this design, the hook rod 704 can be lowered to the height of the winding shaft 401 when the film roll 4 is placed on the ground by the lifting telescopic cylinder 701. Then, by rotating the hook rod 704 to hook the winding shaft 401, it can be raised to the installation height.

[0050] In addition, the bottom of the vehicle frame 1 is also provided with a mounting bracket 705 opposite to the hook of the hook rod 704. A push cylinder 706 is installed on the mounting bracket 705. The telescopic end of the push cylinder 706 is provided with a push part 707 for pushing the hook rod 704. Thus, when the hook rod 704 is not in use, the push part 707 of the push cylinder 706 can be used to push the hook rod 704, so that it rotates away from the winding shaft 401. When it is needed, the push part 707 can be retracted to make it leave the hook rod 704.

[0051] It should be noted that when the membrane roll 4 is raised to the installation height, if the mating groove 3032 on its winding shaft 401 is not aligned with the mating groove 3032 of the telescopic cavity 3030, the two can be aligned by using the forward and backward moving device.

[0052] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A road maintenance paver comprising a vehicle frame (1), characterized in that it further comprises include: Two wheel sets (2) are arranged at the bottom of the vehicle frame (1) and at the front and rear. The wheel set (2) includes two mounting seats (201) symmetrically arranged at the corners of the vehicle frame (1). A drive shaft (202) is rotatably arranged between the two mounting seats (201). The end of the drive shaft (202) passes through the mounting seat (201) and is provided with a wheel body. There are two film-laying mechanisms (3), which are symmetrically arranged in the middle of the vehicle frame (1). The film-laying mechanism (3) includes a rotating seat (301) arranged on the side of the vehicle frame (1). A rotating shaft (302) is rotatably arranged through the rotating seat (301). A docking structure (303) is arranged in the rotating shaft (302). The membrane roll (4) is disposed between the two membrane delivery mechanisms (3) via a docking structure (303); There are two synchronous transmission mechanisms (5), which are respectively set between two rotating shafts (302) and the transmission shaft (202) of the same wheel set (2). The synchronous transmission mechanism (5) includes a first gear (501) and a second gear (502) respectively set outside the rotating shaft (302) and the transmission shaft (202). A connecting plate (503) is set between the rotating seat (301) and the mounting seat (201). A transmission gear (504) is rotatably set on the connecting plate (503). The transmission gear (504) meshes with the first gear (501) and the second gear (502) at the same time.

2. The pavement maintenance and overlay distribution device of claim 1, wherein: The membrane roll (4) includes a winding shaft (401) on which the membrane body (402) is wound up.

3. The pavement maintenance and overlay distribution device of claim 2, wherein: The docking structure (303) includes a telescopic cavity (3030) disposed in a rotating shaft (302). Both ends of the telescopic cavity (3030) are open, and the diameter of the opening at the outer end is smaller than its own diameter. The end of the winding shaft (401) is provided with a docking cavity (3031) that can communicate with the telescopic cavity (3030). The inner end of the telescopic cavity (3030) and the inner wall surface of the docking cavity (3031) are provided with multiple interconnectable docking grooves (3032). A docking shaft that can be inserted into the docking cavity (3031) is telescopically disposed in the telescopic cavity (3030). (3033) The docking shaft (3033) is provided with a limiting strip (3034) that slides with the docking groove (3032). The other end of the docking shaft (3033) passes through the outer end of the telescopic cavity (3030) through the connecting rod (3035) and is connected to the limiting plate (3036). The outer side of the limiting plate (3036) is provided with a handle (3037). The connecting rod (3035) is fitted with a telescopic spring (3038). The telescopic spring (3038) is located between the docking shaft (3033) and the inner wall of the outer end of the telescopic cavity (3030).

4. The pavement maintenance and overlay distribution device of claim 3, wherein: A pin hole (3040) is provided through the inner end of the telescopic cavity (3030) and the telescopic cavity (3030). A through hole (3039) corresponding to the two pin holes (3040) is provided on the front and rear of the docking shaft (3033). A bolt and nut (3041) are provided between the pin hole (3040) and the through hole (3039). When the docking shaft (3033) is fully retracted into the telescopic cavity (3030), the pin hole (3040) at the front end is aligned with the through hole (3039) on it.

5. The pavement maintenance and overlay distribution device of claim 1, wherein: The vehicle frame (1) is also provided with a pressing mechanism (6), which includes two spring telescopic rods (601) symmetrically arranged at the bottom of the vehicle frame (1) and a pressing rod (602) arranged at the telescopic ends of the two spring telescopic rods (601).

6. The pavement maintenance and overlay distribution device of claim 5, wherein: The spring telescopic rod (601) includes an outer sleeve (6010) with one end open. Limiting grooves (6011) are symmetrically arranged on the inner wall surfaces of the outer sleeve (6010). A telescopic shaft (6012) is movably inserted into the open end of the outer sleeve (6010). A limiting block (6013) that slides with the limiting groove (6011) is provided outside the insertion end of the telescopic shaft (6012). A tension spring (6014) is provided in the outer sleeve (6010) that abuts against the insertion end of the telescopic shaft (6012).

7. The pavement maintenance and overlay apparatus of claims 3 or 4, wherein: The vehicle frame (1) is also provided with a hoisting mechanism (7) for hoisting the film roll (4). The hoisting mechanism (7) includes two symmetrically arranged hoisting components. The hoisting components include a lifting telescopic cylinder (701) set on the top of the vehicle frame (1). The telescopic end of the lifting telescopic cylinder (701) is provided with a rotating seat (702). A rotating shaft (703) is rotatably passed through the rotating seat (702). The end of the rotating shaft (703) is provided with a hook rod (704) that can hook the take-up shaft (401).

8. The pavement maintenance and overlay distribution device of claim 7, wherein: The bottom of the vehicle frame (1) is also provided with a mounting bracket (705) opposite to the hook of the hook rod (704). A push cylinder (706) is installed on the mounting bracket (705). The telescopic end of the push cylinder (706) is provided with a push part (707) for pushing the hook rod (704).

9. The pavement maintenance and overlay distribution device of claim 1, wherein: A handlebar (8) is also provided on one side of the top of the vehicle frame (1).

Images