A road roller for construction engineering

Abstract

The present invention relates to a road roller, and in particular to a road roller for construction engineering, wherein the transmission wheels in the main shaft of the upper wheel group and the main shaft of the lower wheel group of the road roller drive the scraper chain to drive, and under the action of the vibration of the vibrating roller and the adhesive on the vibrating roller, the angle between the upper wheel group bracket and the lower wheel group bracket changes, and when the angle changes, the scraper chain is driven to expand and contract, and when the scraper chain is in the transmission and expansion and contraction change, the scraper in the scraper bracket on the scraper chain scrapes off the adhesive on the vibrating roller. The present invention effectively utilizes the vibration of the vibrating roller of the road roller to clean the adhesive, thereby improving the cleaning efficiency.

Description

Technical Field

[0001] This invention relates to road rollers, and more specifically to a road roller for construction engineering. Background Art

[0002] When a road roller compacts the ground, due to the ground's moisture level, some dirt, asphalt, or aggregate particles adhere to the roller, resulting in an uneven surface. CN118257177A and CN220665876U both disclose a road roller for construction engineering, both capable of scraping off these adhering materials from the roller.

[0003] However, existing methods for removing adhesive residue cannot effectively utilize the vibration of the roller to remove the residue, resulting in residue remaining on the roller and low removal efficiency. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a road roller for construction engineering.

[0005] One embodiment of the present invention provides a road roller for construction engineering, including a vehicle body, a vibrating roller, and a support arm connecting the vehicle body and the vibrating roller. An upper roller assembly shaft and a lower roller assembly shaft are respectively installed above and below the support arm. A drive wheel is fixed in the upper roller assembly shaft and the lower roller assembly shaft. The drive wheels in the upper roller assembly shaft and the lower roller assembly shaft are connected by a scraper chain.

[0006] The scraper chain is composed of several scraper supports arranged in series. Each scraper support contains a scraper shaft and a scraper that rotates around the scraper shaft. The scraper is connected to the scraper support through a return spring. One scraper in two adjacent scraper supports is connected to the other scraper support through an elastic rope.

[0007] The upper wheel assembly shaft and the lower wheel assembly shaft are rotatably connected to the upper wheel assembly bracket and the lower wheel assembly bracket respectively through the second bearing sleeve. The upper wheel assembly bracket and the lower wheel assembly bracket are rotatably connected to the support arm beam of the support arm respectively through different first bearing sleeves.

[0008] When the road roller is working, the transmission wheels in the upper wheel set shaft and the lower wheel set shaft drive the scraper chain. Under the action of the vibration of the vibrating roller and the adhesive on the vibrating roller, the included angle between the upper wheel set support and the lower wheel set support changes. When the included angle changes, it drives the scraper chain to extend and retract. When the scraper chain is in transmission and extension and retraction, the scraper in the scraper support scrapes off the adhesive on the vibrating roller.

[0009] Preferably, each scraper bracket includes a scraper shaft and a scraper that rotates around the scraper shaft, and the scraper is connected to the scraper bracket via a return spring. The specific steps are as follows:

[0010] The scraper shaft divides the scraper into two parts. One part is inside the scraper support, referred to as the lower part, and the other part extends out of the scraper support, referred to as the upper part. The upper part is used to scrape off the adhesive on the vibrating roller.

[0011] The upper and lower parts are respectively connected to the scraper bracket by two return springs. Under the tension of the two return springs, the scraper is in a state of force balance and is placed at an angle in the scraper bracket.

[0012] Preferably, one of the two adjacent scraper supports is connected to the other scraper support by an elastic rope, and the specific steps are as follows:

[0013] Along the direction of the scraper's inclination, any two adjacent scraper supports are successively labeled A and B;

[0014] The upper part of the scraper in B is connected to A by an elastic cord, and the lower part of the scraper in A is connected to B by an elastic cord.

[0015] Preferably, the upper wheel assembly shaft and the lower wheel assembly shaft are rotatably connected to the upper wheel assembly bracket and the lower wheel assembly bracket respectively via second bearing sleeves. The upper wheel assembly bracket and the lower wheel assembly bracket are rotatably connected to the support arm beam of the support arm via different first bearing sleeves. The specific steps are as follows:

[0016] For either the upper wheel assembly axle or the lower wheel assembly axle, the wheel assembly axle is fixed to the inner wall of the second bearing sleeve; for either the upper wheel assembly bracket or the lower wheel assembly bracket, one end of the wheel assembly bracket is fixed to the outer wall of the second bearing sleeve, and the inner wall of the second bearing sleeve and the outer wall of the second bearing sleeve are connected by rolling balls.

[0017] The other end of the wheel set bracket is fixed to the outer wall of the first bearing sleeve, the inner wall of the first bearing sleeve is fixed to the crossbeam of the support arm, the crossbeam of the support arm is welded to the support arm, and the outer wall of the first bearing sleeve and the inner wall of the first bearing sleeve are connected by rolling balls.

[0018] When the upper wheel assembly bracket and the lower wheel assembly bracket are rotatably connected to the support arm beam through the first bearing sleeve, the upper wheel assembly bracket and the lower wheel assembly bracket are respectively connected to the outer wall of different first bearing sleeves.

[0019] Preferably, one end of the main shaft of the upper wheel assembly is fixed with a main shaft drive wheel, which is driven by an electric motor.

[0020] Preferably, a main shaft friction wheel is installed on the main shaft of the upper or lower wheel group, and the main shaft friction wheel is in rolling connection with the main shaft of the upper or lower wheel group, while the main shaft friction wheel is in direct contact with the vibrating roller.

[0021] Preferably, a wheel assembly bracket spring is installed between the upper wheel assembly bracket and the lower wheel assembly bracket. A tension sensor is installed at one end of the wheel assembly bracket spring. The processor reads the tension output by the tension sensor and controls the vibration frequency of the vibrating roller and the speed of the motor.

[0022] Preferably, the transmission wheel in the upper wheel assembly shaft drives the scraper chain to rotate counterclockwise; at the same time, for two adjacent scraper supports A and B, the direction in which A moves to B is the counterclockwise direction of the scraper chain.

[0023] Preferably, the processor reads the tension output by the tension sensor and controls the vibration frequency of the vibrating roller and the rotation speed of the motor, including the following specific steps:

[0024] The processor acquires a time sequence of tension output by the tension sensor within a preset time period, and uses a Fourier transform algorithm to remove the target frequency from the time sequence to obtain a filtered sequence. The target frequency is the vibration frequency of the vibrating roller.

[0025] The vibration frequency of the vibrating roller and the speed of the motor are increased by a×100%, respectively. a is positively correlated with the difference in tension in the filter sequence.

[0026] Preferably, when the vibratory roller is stationary and there is no adhesive material, the angle between the upper roller support and the lower roller support is less than 30 degrees.

[0027] The beneficial effects of the technical solution of the present invention are:

[0028] In this invention, as the vibratory roller of the road roller rolls, the drive wheels in the upper and lower roller shafts drive the scraper chain. When the vibratory roller vibrates, because the scraper chain is tightly attached to the roller, the drive wheels in the upper and lower roller shafts also vibrate back and forth. At this time, the upper and lower roller shafts also drive the upper and lower roller supports to rotate back and forth (i.e., the angle between the upper and lower roller supports changes at a certain frequency). Furthermore, under the vibration of the vibratory roller, the elastic ropes between the scraper supports in the scraper chain will extend and retract, and the scraper, under the action of the return spring and the elastic ropes, will also extend and retract, thus removing the adhesive material from the vibratory roller.

[0029] Driven by the scraper chain and through its scraping action, the adhesive material on the vibrating roller can be removed. Furthermore, because the scraper chain has a large contact area with the vibrating roller, it can efficiently remove the adhesive material. Attached Figure Description

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a schematic diagram of the overall structure of a road roller for construction engineering provided in one embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the positional relationship between the scraper chain and the vibrating roller of a road roller for construction engineering, provided in one embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the scraper chain structure of a road roller for construction engineering provided in one embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the scraper position relationship structure of a road roller for construction engineering provided in one embodiment of the present invention.

[0035] In the diagram: 1. Vehicle body; 2. Vibrating roller; 3. Support arm; 4. Support arm crossbeam; 5. First bearing sleeve; 6. Upper wheel assembly bracket; 7. Drive wheel; 8. Scraper chain; 9. Processor; 10. Lower wheel assembly bracket; 11. Wheel assembly bracket spring; 12. Tension sensor; 13. Second bearing sleeve; 14. Upper wheel assembly main shaft; 15. Lower wheel assembly main shaft; 16. Main shaft drive wheel; 17. Main shaft friction wheel; 81. Scraper; 82. Scraper bracket; 83. Elastic rope; 84. Return spring; 85. Scraper shaft. Detailed Implementation

[0036] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of a road roller for construction engineering proposed according to the present invention. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0037] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0038] The following description, in conjunction with the accompanying drawings, details a specific solution for a road roller used in construction engineering provided by the present invention.

[0039] Example 1:

[0040] Please see Figures 1 to 4 This invention illustrates a road roller for construction engineering provided by an embodiment of the present invention, including a vehicle body 1, a vibrating roller 2, and a support arm 3 connecting the vehicle body 1 and the vibrating roller 2. The vibrating roller 2 includes a vibration device for generating vibration to compact the road surface. The vehicle body 1, the vibrating roller 2, and the support arm 3 are existing technologies, and will not be described in detail in this embodiment.

[0041] like Figure 2 As shown, a support arm crossbeam 4 is welded onto the support arm 3. Two wheel assembly brackets are mounted on the support arm crossbeam 4, namely an upper wheel assembly bracket 6 and a lower wheel assembly bracket 10. The upper wheel assembly bracket 6 is rotatably connected to the support arm crossbeam 4 through a first bearing sleeve 5. The specific connection method is as follows:

[0042] One end of the upper wheel assembly bracket 6 is welded and fixed to the outer wall of the first bearing sleeve 5. The inner wall of the first bearing sleeve 5 is welded to the support arm beam 4. The outer wall of the first bearing sleeve 5 and the inner wall of the first bearing sleeve 5 are connected by rolling balls.

[0043] This connection method ensures that the upper wheel assembly bracket 6 can rotate around the support arm beam 4.

[0044] The lower wheel assembly bracket 10 also rotates with the support arm beam 4 via the first bearing sleeve 5: one end of the lower wheel assembly bracket 10 is welded and fixed to the outer wall of the first bearing sleeve 5, and the inner wall of the first bearing sleeve 5 is welded to the support arm beam 4.

[0045] It should be noted that the upper wheel assembly bracket 6 and the lower wheel assembly bracket 10 are connected to the support arm beam 4 via different first bearing sleeves 5, ensuring that the upper wheel assembly bracket 6 and the lower wheel assembly bracket 10 can rotate independently around the support arm beam 4, thereby ensuring that the included angle between the upper wheel assembly bracket 6 and the lower wheel assembly bracket 10 can be changed. The upper wheel assembly bracket 6 is located above the support arm beam 4, and the lower wheel assembly bracket 10 is located below the support arm beam 4.

[0046] like Figure 2 As shown, the other end of the upper wheel assembly bracket 6 is rotatably connected to the upper wheel assembly main shaft 14 via the second bearing sleeve 13. Specifically:

[0047] The other end of the upper wheel assembly bracket 6 is welded to the outer wall of the second bearing sleeve 13, and the inner wall of the second bearing sleeve 13 is welded to the upper wheel assembly shaft 14. The inner wall of the second bearing sleeve 13 and the outer wall of the second bearing sleeve 13 are connected by rolling balls. This connection method can ensure that the upper wheel assembly shaft 14 can rotate freely relative to the upper wheel assembly bracket 6.

[0048] The other end of the lower wheel assembly bracket 10 is rotatably connected to the lower wheel assembly main shaft 15 through the second bearing sleeve 13. That is, the other end of the lower wheel assembly bracket 10 is welded and fixed to the outer wall of the second bearing sleeve 13, and the inner wall of the second bearing sleeve 13 is welded to the lower wheel assembly main shaft 15. The lower wheel assembly main shaft 15 can rotate freely relative to the lower wheel assembly bracket 10.

[0049] Furthermore, a number of transmission wheels 7 are installed on the upper wheel assembly shaft 14. Each transmission wheel 7 is fixed on the upper wheel assembly shaft 14. In this embodiment, it is fixed by welding. In other embodiments, it can be fixed by other methods, such as directly casting the transmission wheel 7 onto the wheel assembly shaft 14. When the upper wheel assembly shaft 14 rotates, the transmission wheel 7 also rotates synchronously.

[0050] The same number of drive wheels 7 are also fixed on the lower wheel assembly shaft 15 using the same method.

[0051] like Figure 1 As shown, the transmission wheel 7 on the upper wheel assembly shaft 14 and the transmission wheel 7 on the lower wheel assembly shaft 15 are connected by a scraper chain 8.

[0052] The scraper chain 8 is composed of several scraper supports 82 arranged in series to form a closed chain.

[0053] Each scraper support 82 includes a scraper shaft 85 and a scraper 81 that rotates around the scraper shaft 85, such as Figure 3 As shown, the scraper shaft 85 divides the scraper 81 into two parts. One part is inside the scraper support 82, referred to as the lower part, and the other part extends out of the scraper support 82, referred to as the upper part. The upper part is used to scrape off the adhesive on the vibrating roller 2. In this embodiment, when the scraper 81 rotates around the scraper shaft 85, the length of the extended upper part of the scraper 81 will change.

[0054] In this embodiment, the scraper bracket 82 is a metal housing. In other embodiments, the scraper bracket 82 can also be designed with other structures, such as a metal frame structure, which can reduce weight. In all embodiments, the scraper bracket 82 only needs to be able to install the scraper shaft 85 and ensure that the scraper 81 can rotate and that the upper part can extend to different lengths when rotating.

[0055] In each scraper bracket 82, the lower and upper parts of the scraper 81 are connected to the scraper bracket 82 (metal housing) via two return springs 84. Under the tension of the two return springs 84, the scraper 81 is in a state of force balance and is tilted within the scraper bracket 82. Figure 3 As shown.

[0056] One scraper 81 of two adjacent scraper supports 82 is connected to the other scraper support 82 by an elastic rope 83, specifically:

[0057] Along the inclined direction of scraper 81, any two adjacent scraper supports 82 are successively labeled A and B, such as... Figure 3 As shown, the upper part of scraper 81 in B is connected to the metal shell of A (using elastic rope 83), and the lower part of scraper 81 in A is connected to the metal shell of B (using elastic rope 83).

[0058] After the scraper supports 82 in the scraper chain 8 are connected using the above method, when the elastic rope 83 between the scraper supports 82 is stretched, the scraper 81 will rotate around the scraper shaft 85, the tilt angle of the upper part of the scraper 81 will decrease, and it will extend further. When the elastic rope 83 is not stretched, the scraper supports 82 in the scraper chain 8 are close together, and under the pulling action of the return spring 84, the tilt angle of the upper part of the scraper 81 will increase, and the extended length will decrease.

[0059] The scraper chain 8 is installed on the drive wheel 7 on the upper wheel assembly shaft 14 and the lower wheel assembly shaft 15. At this time, a portion of the scraper 81 in the scraper chain 8 is in contact with the vibrating roller 2.

[0060] At the same time, when the transmission wheels 7 on the upper wheel assembly shaft 14 and the lower wheel assembly shaft 15 rotate, the scraper chain 8 also performs transmission motion, and the scraper 81 in the scraper chain 8 scrapes off the adhesive on the vibrating roller 2.

[0061] As a preferred example, the method for driving the transmission wheels 7 on the upper wheel assembly shaft 14 and the lower wheel assembly shaft 15 to rotate includes:

[0062] A main shaft drive wheel 16 is fixedly installed at one end of the main shaft 14 of the upper wheel assembly. The main shaft drive wheel 16 is connected to the motor. In this embodiment, a belt is used for transmission. In other embodiments, a chain drive or gear drive can be used. The motor drives the main shaft drive wheel 16, which in turn drives the transmission wheel 7 on the main shaft 14 of the upper wheel assembly to rotate. When the transmission wheel 7 rotates, it drives the transmission wheel 7 on the main shaft 15 of the lower wheel assembly to rotate through the transmission action of the scraper chain 8.

[0063] It should be noted that when the transmission wheel 7 on the upper wheel assembly shaft 14 rotates, the friction between the transmission wheel 7 and the scraper chain 8 drives the scraper chain 8 to rotate, which in turn drives the transmission wheel 7 on the lower wheel assembly shaft 15 to rotate. Therefore, in this embodiment, the contact point between the scraper bracket 82 in the scraper chain 8 and the transmission wheel 7 needs to have a large friction force. Therefore, the transmission wheel 7 is a pulley, and the contact point between the scraper bracket 82 and the transmission wheel 7 is inlaid or fixed with a belt (or a belt material).

[0064] In some other embodiments, the drive wheel 7 can be configured as a gear, and a chain can be embedded or fixed where the scraper bracket 82 contacts the drive wheel 7. In this case, the drive of the scraper chain 8 is chain drive.

[0065] In some embodiments, a chain can be inlaid or fixed on both sides of the drive scraper chain 8, and gears can be set on both sides of the transmission wheel 7. The gears and the chain form a chain drive, which in turn drives the scraper chain 8.

[0066] Other transmission methods may be used in other embodiments, but this embodiment does not impose specific limitations.

[0067] As an alternative example, a method for driving the transmission wheels 7 on the upper wheel assembly shaft 14 and the lower wheel assembly shaft 15 to rotate includes:

[0068] The aforementioned main shaft drive wheel 16 is configured as a gear, and a gear ring that meshes with the main shaft drive wheel 16 is installed on the vibrating roller 2. When the vibrating roller 2 rotates, the transmission wheel 7 on the upper roller group main shaft 14 and the lower roller group main shaft 15 is driven to rotate through the meshing action of the main shaft drive wheel 16.

[0069] As another alternative example, the method of driving the transmission wheels 7 on the upper wheel assembly shaft 14 and the lower wheel assembly shaft 15 to rotate includes:

[0070] The main shaft drive wheel 16 is made of a rough rubber wheel. The friction between the vibrating roller 2 and the main shaft drive wheel 16 drives the transmission wheel 7 on the upper wheel set main shaft 14 and the lower wheel set main shaft 15 to rotate.

[0071] The working principle of the road roller in this embodiment is as follows:

[0072] When the road roller is started, the vibratory roller 2 of the road roller rolls and vibrates to compact the road surface. While the vibratory roller 2 is rolling, the drive wheels 7 in the upper roller group main shaft 14 and the lower roller group main shaft 15 drive the scraper chain 8. When the vibratory roller 2 vibrates, since the scraper chain 8 is in close contact with the vibratory roller 2, the drive wheels 7 in the upper roller group main shaft 14 and the lower roller group main shaft 15 will also vibrate back and forth. At this time, the upper roller group main shaft 14 and the lower roller group main shaft 15 will also drive the upper roller group support 6 and the lower roller group support 10 to rotate back and forth (that is, the included angle between the upper roller group support 6 and the lower roller group support 10 will change at a certain frequency). Furthermore, under the vibration of the vibrating roller 2, the elastic rope 83 between the scraper supports 82 in the scraper chain 8 will extend and retract, and the scraper 81 will also extend and retract under the action of the return spring 84 and the elastic rope 83, thus removing the adhesive on the vibrating roller 2. When the elastic rope 83 is stretched, the scraper 81 extends out and sticks tightly to the vibrating roller 2. The larger the amplitude of the vibrating roller 2, the tighter it sticks to the roller. The higher the vibration frequency of the vibrating roller 2, the faster the removal action.

[0073] In summary, the scraper chain 8, through its transmission and scraping action, can remove the adhesive material from the vibrating roller 2. Furthermore, because the scraper chain 8 has a large contact area with the vibrating roller 2, it can efficiently remove the adhesive material.

[0074] Example 2:

[0075] The difference between this embodiment and Embodiment 1 is that the main shaft drive wheel 16 is mounted on the main shaft 15 of the lower wheel assembly and is driven by an electric motor.

[0076] It should be noted that in this embodiment, when the main shaft drive wheel 16 is mounted on the lower wheel assembly main shaft 15 and is driven by a motor, Figure 1 The transmission wheel 7 on the lower wheel assembly shaft 15 shown drives the scraper chain 8 clockwise, while... Figure 3 The direction from A to B is used as the clockwise transmission direction of the scraper chain 8 (when the scraper chain 8 rotates clockwise, A moves to B), which makes it easier to remove or scrape off the adhesive. Of course, in other embodiments, the direction from B to A can also be used as the clockwise transmission direction of the scraper chain 8, but the efficiency of removing or scraping off the adhesive will be relatively low.

[0077] Further explanation of Embodiment 1: When the main shaft drive wheel 16 is installed on the main shaft 14 of the upper wheel assembly, the transmission wheel 7 of the main shaft 14 of the upper wheel assembly drives the scraper chain 8 to rotate counterclockwise. Simultaneously, the direction from A to B serves as the counterclockwise rotation direction of the scraper chain 8, making it easier to remove or scrape off adhesive substances. Of course, in other embodiments, the direction from B to A can also be used as the counterclockwise rotation direction of the scraper chain 8.

[0078] Example 3:

[0079] The difference between this embodiment and Embodiment 1 and Embodiment 2 is that:

[0080] A main shaft friction wheel 17 is installed on either the upper wheel assembly main shaft 14 or the lower wheel assembly main shaft 15. The axle of the main shaft friction wheel 17 is a bearing sleeve. The inner wall of the bearing sleeve is fixed to the upper wheel assembly main shaft 14 or the lower wheel assembly main shaft 15, and the outer wall of the bearing sleeve is fixed to the wheel body of the main shaft friction wheel 17. The outer wall and the inner wall of the bearing sleeve are in a rolling connection. This structure ensures that the wheel body of the main shaft friction wheel 17 can rotate freely relative to the upper wheel assembly main shaft 14 or the lower wheel assembly main shaft 15.

[0081] Furthermore, the wheel body of the main shaft friction wheel 17 is in direct contact with the vibrating roller 2. The wheel body of the main shaft friction wheel 17 is made of rubber or wear-resistant plastic. In some embodiments, it can also be made of metal.

[0082] The purpose of installing the main shaft friction wheel 17 is to better transmit the vibration signal of the vibrating roller 2 to the main shaft 14 of the upper wheel group or the main shaft 15 of the lower wheel group through the direct contact between the main shaft friction wheel 17 and the vibrating roller 2. This ensures that the scraper chain 8 can more easily and significantly expand and contract under the influence of the vibration of the vibrating roller 2, thereby enabling the scraper 81 on the scraper chain 8 to perform more obvious and powerful scraping or shoveling actions.

[0083] In other embodiments, multiple shaft friction wheels 17 may be installed on the upper wheel assembly shaft 14 or the lower wheel assembly shaft 15.

[0084] Example 4:

[0085] The difference between this embodiment and Embodiment 1 above is that:

[0086] In this embodiment, a wheel assembly bracket spring 11 is installed between the upper wheel assembly bracket 6 and the lower wheel assembly bracket 10, and a tension sensor 12 is installed at one end of the wheel assembly bracket spring 11.

[0087] In this embodiment, it is considered that the adhesive on the vibrating roller 2 will lift the upper wheel assembly shaft 14 or the lower wheel assembly shaft 15 to a certain height through the scraper chain 8. At this time, the included angle between the upper wheel assembly bracket 6 and the lower wheel assembly bracket 10 becomes larger, and the wheel assembly bracket spring 11 is further stretched. The tension of the wheel assembly bracket spring 11 sensed by the tension sensor 12 includes the adhesion and distribution information of the adhesive on the vibrating roller 2.

[0088] In this embodiment, the processor 9 reads the tension output by the tension sensor 12, and controls the rotation speed of the motor driving the drive shaft drive wheel 16 and the vibration frequency of the vibrating roller 2 according to the magnitude of the tension, thereby removing the adhesive on the vibrating roller 2 more efficiently.

[0089] As an example, the method for reading the tension output by the tension sensor 12 and controlling the rotational speed of the motor driving the main shaft drive wheel 16 and the vibration frequency of the vibrating roller 2 based on the magnitude of the tension is as follows:

[0090] The tension sensor 12 outputs a tension data every 0.5 seconds.

[0091] The tensile forces within a recent period (e.g., within the last 5 seconds) are obtained, forming a time series. The frequency signals in the time series are obtained using the Fourier transform algorithm. The frequency signals that are equal to the vibration frequency of the vibrating roller 2 are deleted (that is, the signal amplitude of the frequency signal is reset to 0). Then, the inverse Fourier transform algorithm is used to transform the remaining frequency signals into a time series in the time domain, which is recorded as the filtered sequence.

[0092] The filtered sequence does not contain data on tension changes caused by the vibration of the vibrating roller 2. Therefore, the tension changes in the filtered sequence describe the distribution of the adhesive material that is stuck to the vibrating roller 2 and has not yet been removed.

[0093] The tension data in the filtered sequence is linearly normalized, and the variance 'a' of the tension after linear normalization is calculated. The larger 'a' is, the more adhesive material is stuck to the vibrating roller 2 and has not yet been removed.

[0094] At this point, the speed of the motor and the vibration frequency of the vibrating roller 2 are increased by w×a×100%, respectively.

[0095] Where w is a preset coefficient. In this embodiment, w=0.6 is used as an example. Other values ​​can be set in other embodiments. This embodiment does not impose specific limitations. Alternatively, different w values ​​can be set for the motor speed and vibration frequency.

[0096] In other embodiments, the variance can be replaced with the difference between the maximum and minimum values ​​of the tension after linear normalization.

[0097] The variance and the difference between the maximum and minimum values ​​described above describe the difference in tension in the filter sequence. The greater the difference, the more necessary it is to increase the cleaning force of the adhesive (that is, to increase the speed of the motor and the vibration frequency of the vibrating roller 2).

[0098] In some other embodiments, the method for obtaining the above-mentioned filtered sequence further includes obtaining the residual terms of the above-mentioned time series sequence using the STL (Time Series Decomposition) algorithm, and using the residual terms as the filtered sequence. The filtered sequence obtained by this method does not contain the tensile change data caused by the vibration of the vibrating roller 2, and can describe the distribution of the adhesives that are stuck on the vibrating roller 2 and have not yet been cleaned off.

[0099] The Fourier transform algorithm and STL (Time Series Decomposition) algorithm mentioned above are well-known technologies, and will not be described in detail in this embodiment.

[0100] In some embodiments, if no motor is installed or the vibration frequency cannot be adjusted, then the motor speed or vibration frequency does not need to be adjusted. In other embodiments, if the vibration amplitude can be adjusted, the vibration amplitude can be increased by w×a×100%. For example, CN1240909C discloses a composite vibratory roller with stepless amplitude adjustment, wherein the vibration amplitude of the roller can be adjusted.

[0101] It should also be noted that in all embodiments of the present invention, the number, width, and spacing of the drive wheels 7 on the upper wheel assembly shaft 14 or the lower wheel assembly shaft 15 are not limited. For example, in some embodiments, only one drive wheel 7 of the same width as the vibrating roller 2 can be installed on the upper wheel assembly shaft 14 or the lower wheel assembly shaft 15. Furthermore, the contact area between the scraper chain 8 and the vibrating roller 2 is not limited. For example, in other embodiments, the length of the upper wheel assembly bracket 6 and the lower wheel assembly bracket 10 can be reduced, the spacing between the upper wheel assembly shaft 14 and the lower wheel assembly shaft 15 can be reduced, or the included angle between the upper wheel assembly bracket 6 and the lower wheel assembly bracket 10 can be reduced to decrease the contact area between the scraper chain 8 and the vibrating roller 2, thereby reducing costs.

[0102] In some embodiments of the present invention, when the vibrating roller 2 is stationary and there is no adhesive, the angle between the upper roller bracket 6 and the lower roller bracket 10 is less than 30 degrees, avoiding excessive cost and weight due to the large area of ​​the scraper chain 8. In all embodiments of the present invention, the scraper chain 8 does not need to have too much contact area with the vibrating roller 2 to efficiently remove adhesive. Of course, in other embodiments, the angle between the upper roller bracket 6 and the lower roller bracket 10 can be set to other values ​​according to the specific application scenario.

[0103] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A road roller for construction engineering, comprising a vehicle body (1), a vibrating roller (2), and a support arm (3) connecting the vehicle body (1) and the vibrating roller (2), characterized in that: An upper wheel assembly main shaft (14) and a lower wheel assembly main shaft (15) are respectively installed above and below the support arm (3), and a transmission wheel (7) is respectively fixed in the upper wheel assembly main shaft (14) and the lower wheel assembly main shaft (15), and the transmission wheels (7) in the upper wheel assembly main shaft (14) and the lower wheel assembly main shaft (15) are connected by a scraper chain (8); The scraper chain (8) is composed of a plurality of scraper brackets (82) arranged in series, each scraper bracket (82) comprising a scraper rotating shaft (85) and a scraper (81) rotating around the scraper rotating shaft (85), and the scraper (81) is connected to the scraper bracket (82) via a return spring (84); one scraper (81) in two adjacent scraper brackets (82) is connected to the other scraper bracket (82) via an elastic rope (83); The upper wheel assembly main shaft (14) and the lower wheel assembly main shaft (15) are rotatably connected to the upper wheel assembly bracket (6) and the lower wheel assembly bracket (10) respectively through the second bearing sleeve (13); the upper wheel assembly bracket (6) and the lower wheel assembly bracket (10) are rotatably connected to the support arm crossbeam (4) of the support arm (3) respectively through different first bearing sleeves (5); When the roller is working, the driving wheels (7) in the upper wheel assembly main shaft (14) and the lower wheel assembly main shaft (15) drive the scraper chain (8) to drive, and under the action of the vibration roller (2) and the adhesive on the vibration roller (2), the angle between the upper wheel assembly bracket (6) and the lower wheel assembly bracket (10) changes, and when the angle changes, the scraper chain (8) is driven to expand and contract, and when the scraper chain (8) is driven and expanded and contracted, the scraper (81) in the scraper bracket (82) scrapes off the adhesive on the vibration roller (2); Each scraper support (82) comprises a scraper rotating shaft (85) and a scraper (81) rotating around the scraper rotating shaft (85), and the scraper (81) is connected to the scraper support (82) via a return spring (84), and the specific steps are as follows: The scraper rotating shaft (85) divides the scraper (81) into two parts, one part of which is located in the scraper bracket (82) and is denoted as the lower part, and the other part extends out of the scraper bracket (82) and is denoted as the upper part. The upper part is used to scrape off adhesives on the vibrating roller (2); The upper part and the lower part are respectively connected to the scraper support (82) via two return springs (84); under the pulling force of the two return springs (84), the scraper (81) is in a force-balanced state and is tilted in the scraper support (82).

2. A road roller for construction engineering according to claim 1, characterized in that: One scraper (81) of the two adjacent scraper brackets (82) is connected to the other scraper bracket (82) via an elastic rope (83), and the specific steps include the following: Along the inclination direction of the scraper (81), any two adjacent scraper brackets (82) are marked as A and B in sequence; The upper part of the scraper (81) in B is connected to A using an elastic rope (83), and the lower part of the scraper (81) in A is connected to B using an elastic rope (83).

3. A road roller for construction engineering according to claim 1, characterized in that: The upper wheel assembly main shaft (14) and the lower wheel assembly main shaft (15) are rotatably connected to the upper wheel assembly bracket (6) and the lower wheel assembly bracket (10) respectively through the second bearing sleeve (13); the upper wheel assembly bracket (6) and the lower wheel assembly bracket (10) are rotatably connected to the support arm cross beam (4) of the support arm (3) through different first bearing sleeves (5), and the specific steps are as follows: For any one of the upper wheel assembly shaft (14) and the lower wheel assembly shaft (15), the wheel assembly shaft is fixed on the inner wall of the second bearing sleeve (13); for any one of the upper wheel assembly bracket (6) and the lower wheel assembly bracket (10), one end of the wheel assembly bracket is fixed on the outer wall of the second bearing sleeve (13), and the inner wall of the second bearing sleeve (13) and the outer wall of the second bearing sleeve (13) are rollingly connected via balls; The other end of the wheel set bracket is fixed to the outer wall of the first bearing sleeve (5), the inner wall of the first bearing sleeve (5) is fixed to the support arm crossbeam (4), the support arm crossbeam (4) is welded to the support arm (3), and the outer wall of the first bearing sleeve (5) and the inner wall of the first bearing sleeve (5) are rollingly connected via balls; When the upper wheel assembly bracket (6) and the lower wheel assembly bracket (10) are rotatably connected to the support arm crossbeam (4) via the first bearing sleeve (5), the upper wheel assembly bracket (6) and the lower wheel assembly bracket (10) are respectively connected to the outer walls of different first bearing sleeves (5).

4. A road roller for construction engineering according to claim 1, characterized in that: A main shaft driving wheel (16) is fixed to one end of the upper wheel assembly main shaft (14), and the main shaft driving wheel (16) is driven by a motor.

5. A road roller for construction engineering according to claim 1, characterized in that: A main shaft friction wheel (17) is installed on the main shaft (14) of the upper wheel group or the main shaft (15) of the lower wheel group. The main shaft friction wheel (17) is rollingly connected with the main shaft (14) of the upper wheel group or the main shaft (15) of the lower wheel group, and the main shaft friction wheel (17) is in direct contact with the vibrating roller (2).

6. A road roller for construction engineering according to claim 4, characterized in that: A wheel support spring (11) is installed between the upper wheel support (6) and the lower wheel support (10), and a tension sensor (12) is installed at one end of the wheel support spring (11). The processor (9) reads the tension output by the tension sensor (12) and controls the vibration frequency of the vibrating roller (2) and the rotation speed of the motor.

7. A road roller for construction engineering according to claim 2, characterized in that: The driving wheel (7) in the main shaft (14) of the upper wheel assembly drives the scraper chain (8) to drive counterclockwise; at the same time, for two adjacent scraper brackets (82) A and B, the direction in which A moves to B serves as the counterclockwise direction of the scraper chain (8).

8. A road roller for construction engineering according to claim 6, characterized in that: The processor (9) reads the tension output by the tension sensor (12) and controls the vibration frequency of the vibrating roller (2) and the rotation speed of the motor, and the specific steps include the following: The processor (9) obtains a time series consisting of the tension output by the tension sensor (12) within a preset time period, and uses a Fourier transform algorithm to remove a target frequency in the time series to obtain a filter sequence, wherein the target frequency is the vibration frequency of the vibrating roller (2); The vibration frequency of the vibrating roller (2) and the rotation speed of the motor are increased by a×100% respectively, and a is positively correlated with the difference in the tension in the filter sequence.

9. A road roller for construction engineering according to claim 1, characterized in that: When the vibrating roller (2) is in a stationary state and has no adhesive, the angle between the upper wheel assembly bracket (6) and the lower wheel assembly bracket (10) is less than 30 degrees.

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