Protective device for road maintenance oil spraying vehicle

Abstract

The application relates to a protective device of a highway maintenance oil spraying vehicle and belongs to the technical field of highway maintenance equipment. The application comprises an oil spraying vehicle body, a spraying assembly arranged on the oil spraying vehicle body, a telescopic sleeve arranged on the oil spraying vehicle body, telescopic rods arranged on both ends of the telescopic sleeve, a protective baffle detachably arranged on the end of the telescopic rod far from the telescopic sleeve, and a fixing structure for fixedly connecting the protective baffle and the telescopic rod. The application has the effect of improving the situation that the existing highway maintenance oil spraying vehicle is easy to contaminate the identification line with maintenance oil during operation and reducing the identification clarity of the identification line.

Description

Technical Field

[0001] This application relates to the field of highway maintenance equipment technology, and in particular to a protective device for a highway maintenance spraying vehicle. Background Technology

[0002] As a core piece of equipment in road construction and maintenance, the spraying truck provides crucial technical support for the maintenance of transportation infrastructure such as highways, urban roads, and airport runways by precisely controlling the amount and uniformity of the sprayed maintenance oil. With the rapid development of transportation infrastructure construction, the industry has placed higher demands on the efficiency of maintenance operations in preventing marking line contamination.

[0003] Currently, highway maintenance spray trucks on the market typically consist of a main spray truck body and spraying components. Workers can send signals to the spraying components via a control panel inside the cab to adjust their position. During operation, operators visually observe or use an onboard camera to identify the position of marking lines in real time and manually control the height of the spray boom or the on / off status of specific nozzles.

[0004] Despite the aforementioned technologies, some maintenance oils may still stain the marking lines, reducing their clarity. Utility Model Content

[0005] In order to improve the situation where maintenance oil easily stains road markings and reduces the clarity of road markings during the operation of existing road maintenance spraying vehicles, this application provides a protective device for road maintenance spraying vehicles.

[0006] The protective device for a highway maintenance fuel spraying vehicle provided in this application adopts the following technical solution: A protective device for a highway maintenance spraying vehicle includes a spraying vehicle body and a spraying assembly disposed on the spraying vehicle body. It also includes a telescopic sleeve disposed on the spraying vehicle body, telescopic rods slidably disposed at both ends of the telescopic sleeve, a protective baffle detachably disposed at the end of the telescopic rod away from the telescopic sleeve, and a fixing structure for fixing the protective baffle and the telescopic rod.

[0007] By adopting the above technical solution, the sliding cooperation between the telescopic sleeve and the telescopic rod can adjust the length of the protective baffle extending out of the telescopic sleeve, so that the protective baffle forms a physical block on the marking line, effectively preventing the maintenance oil splashed or spread during the spraying process from contaminating the marking line; the protective baffle and the telescopic rod are detachably connected through a fixed structure, which is convenient for subsequent maintenance, replacement or storage, and ensures the clarity of the marking line identification.

[0008] Optionally, the outer wall of the telescopic rod is provided with an elastic plunger, and the telescopic sleeve is provided with a plurality of plunger ball grooves along its length that are locked in place with the elastic plunger.

[0009] By adopting the above technical solution, during operation, the telescopic rod can be slid to the appropriate length according to the distance between the marking line and the spraying component, so that the elastic plunger can be inserted into the corresponding plunger ball groove, and the position of the telescopic rod can be quickly fixed; the adjustment process does not require tools, the operation is convenient, and the adaptability of the device to different scenarios is improved.

[0010] Optionally, the protective barrier is provided with a tracked chassis facing the road side for abutting the marking line.

[0011] By adopting the above technical solution, the tracked chassis comes into contact with the surface of the road marking line. On the one hand, this keeps the protective baffle and the marking line in close contact, enhancing the protective effect and preventing maintenance oil from leaking from the gap between the protective baffle and the road and contaminating the marking line. On the other hand, the tracked chassis can roll synchronously with the oil spraying vehicle, preventing the bottom of the protective baffle from rubbing against the surface of the marking line and ensuring the structural integrity of the marking line, thus balancing protection and safety.

[0012] Optionally, the protective baffle includes a first baffle fixedly connected to the telescopic rod and a second baffle slidably disposed on the first baffle, with the tracked chassis disposed on the second baffle.

[0013] By adopting the above technical solution, the sliding cooperation between the first baffle and the second baffle can adjust the overall height of the protective baffle. When the extension length of the telescopic rod is adjusted, the track chassis is moved away from the marking line to prevent the track chassis from rubbing against the ground in a direction perpendicular to its own movement, thereby reducing track wear.

[0014] Optionally, the second baffle is provided with an adjusting bolt for fixed connection with the first baffle, the side wall of the first baffle is provided with a strip-shaped through hole for the adjusting bolt to pass through, and the second baffle is provided with a threaded hole that is threadedly engaged with the adjusting bolt.

[0015] By adopting the above technical solution, after sliding the second baffle to the target height, tighten the adjusting bolt so that the adjusting bolt abuts against the side wall of the strip-shaped through hole of the first baffle, locking the position of the second baffle and preventing the second baffle from shifting due to vibration during operation; the strip-shaped through hole provides space for the adjusting bolt to move, taking into account both adjustment flexibility and fixed stability.

[0016] Optionally, the fixing structure includes a snap-fit ​​block disposed on the end of the telescopic rod near the first baffle, an insertion groove opened on the first baffle for the end of the telescopic rod to be inserted into, a snap-fit ​​groove opened on the inner wall of the insertion groove and locked in cooperation with the snap-fit ​​block, and an unlocking component disposed on the first baffle for releasing the locking state of the snap-fit ​​block. The telescopic rod is provided with a first spring for fixed connection with the snap-fit ​​block, and the telescopic rod is provided with an installation groove for installing the first spring and the snap-fit ​​block.

[0017] By adopting the above technical solution, when installing the protective baffle, the end of the telescopic rod is inserted into the insertion slot, and the locking block pops out and locks into the locking slot under the elastic force of the first spring, thereby locking and fixing the telescopic rod and the protective baffle. When disassembling, the locking state of the locking block is released by the unlocking component, and disassembly and assembly can be completed without tools, which meets the convenience requirements of outdoor operations.

[0018] Optionally, the unlocking component includes an unlocking button disposed on the outer wall of the first baffle away from the telescopic rod, a push post disposed on the unlocking button facing the locking block, and a second spring for resetting the unlocking button. The first baffle has an unlocking cavity for the push post to move, and the unlocking cavity is in communication with the locking groove.

[0019] By adopting the above technical solution, pressing the unlock button pushes the column to move along the unlock cavity and squeezes the locking block, causing the locking block to compress the first spring and retract into the mounting groove, disengaging from the locking engagement with the locking groove, and the telescopic rod can be pulled out to complete the disassembly; after releasing the unlock button, the second spring drives the unlock button and the push column to reset. The whole unlocking process is simple to operate, further improving the ease of use of the device.

[0020] Optionally, the snap-fit ​​block is provided with a guide ramp for retracting into the mounting groove, and the end of the push post facing the snap-fit ​​block is provided with a drive ramp for driving the snap-fit ​​block to disengage from the snap-fit ​​groove.

[0021] By adopting the above technical solution, when the telescopic rod is inserted into the insertion slot by the guide slope, the locking block can automatically retract into the installation slot under the pressure of the inner wall of the insertion slot, eliminating the need to manually press the locking block and simplifying the installation operation; the driving slope increases the contact area between the pushing column and the locking block, so that the force when pressing the unlock button is transmitted to the locking block more evenly, avoiding unlocking jamming and improving the smoothness of the disassembly and assembly process.

[0022] Optionally, the fixing structure includes a fixing sleeve disposed on the side of the first baffle facing the telescopic rod, a fixing bolt disposed on the fixing sleeve, a first through hole opened in the fixing sleeve for the fixing bolt to pass through, a second through hole opened in the telescopic rod and corresponding to the first through hole, and a fixing nut that locks into the fixing bolt.

[0023] By adopting the above technical solution, another structural form of the fixing structure is disclosed. The end of the telescopic rod is inserted into the fixing sleeve, the first through hole is aligned with the second through hole, the fixing bolt is inserted and the fixing nut is tightened. The locking force of the bolt and nut thread is used to achieve rigid fixing of the telescopic rod and the protective baffle, so as to avoid the protective baffle from loosening and displacement and ensure the reliability of protection.

[0024] Optionally, the telescopic rod is provided with a positioning ring for positioning the second through hole and the first through hole, and the inner wall of the fixed sleeve is provided with a positioning surface that abuts against the positioning ring.

[0025] By adopting the above technical solution, during installation, the telescopic rod is inserted into the fixing sleeve until the positioning ring abuts against the positioning surface. At this time, the first through hole and the second through hole are aligned, which simplifies the bolt installation process and improves assembly efficiency. At the same time, the positioning ring can limit the insertion depth of the telescopic rod, avoid excessive insertion that may cause component interference, and ensure the accuracy of structural assembly.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By forming a physical barrier through protective baffles, combined with the fit design of the tracked chassis, it effectively prevents maintenance oil from staining the marking lines, improving the situation of marking lines being contaminated and reduced in clarity in existing technologies, and ensuring the standardization of highway maintenance operations; 2. The length adjustment of the telescopic sleeve and telescopic rod, and the contact between the tracked chassis and the marking line, make the protective device adaptable to various operating scenarios such as marking lines with different spacing and roads with elevation differences, thereby improving the versatility and flexible adaptability of the device. 3. The two disclosed fixing structures take into account both convenience and stability. The snap-fit ​​structure facilitates quick disassembly and maintenance, while the bolt structure ensures connection reliability in complex environments. At the same time, the design of the unlocking components and positioning structure optimizes the assembly process, improves ease of use and assembly accuracy, and is highly practical. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0028] Figure 2 This is a cross-sectional view of the telescopic rod in an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the structure of the protective baffle in Embodiment 1 of this application.

[0030] Figure 4 This is a cross-sectional view of the fixed structure in Embodiment 1 of this application.

[0031] Figure 5 This is a schematic diagram of the tracked chassis in Embodiment 1 of this application.

[0032] Figure 6 This is a cross-sectional view of the fixed structure in Embodiment 2 of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Main body of the fuel injection vehicle; 2. Spraying assembly; 3. Telescopic sleeve; 31. Plunger ball groove; 4. Telescopic rod; 41. Elastic plunger component; 42. Snap-fit ​​block; 421. Guide ramp; 43. Second through hole; 44. Positioning ring; 45. Plunger groove; 5. Protective baffle; 51. First baffle; 511. Strip-shaped through hole; 512. Insertion groove; 5121. Snap-fit ​​groove; 513. First spring; 514. Mounting groove; 515. Unlocking cavity; 516. Fixing sleeve; 5161. First through hole; 5162. Positioning surface; 517. Fixing bolt; 518. Fixing nut; 52. Second baffle; 521. Adjusting bolt; 522. Threaded hole; 523. Tracked chassis; 524. Flexible baffle; 6. Unlocking button; 61. Push column; 611. Drive ramp; 62. Second spring. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0035] This application discloses a protective device for a highway maintenance spraying vehicle.

[0036] Example 1: Reference Figure 1 The protective device for the highway maintenance spraying truck includes a main body 1 and a spraying assembly 2 installed on the main body 1. The main body 1 is a conventional intelligent asphalt spraying truck, differing only in that the tank contains highway maintenance oil. The spraying assembly 2 is a conventional component of this truck, and operators can adjust its operation via a control panel in the driver's cab. This application also includes a telescopic sleeve 3 installed on the main body 1, telescopic rods 4 slidably installed at both ends of the telescopic sleeve 3, a protective baffle 5 detachably installed at the end of the telescopic rods 4 away from the telescopic sleeve 3, and a fixing structure for securely connecting the protective baffle 5 and the telescopic rods 4.

[0037] Reference Figure 2 The telescopic sleeve 3 is a hollow cylinder, which is fixed to the fuel injection vehicle body 1 by welding. Several elastic plunger components 41 are installed at one end of the telescopic rod 4 near the telescopic sleeve 3. The telescopic rod 4 has plunger grooves 45 for the elastic plunger components 41 to be installed, and the elastic plunger components 41 are fixed to the telescopic rod 4 by interference fit. The elastic plunger component 41 is a ball-head elastic plunger as in the prior art. The telescopic sleeve 3 has plunger ball grooves 31 that lock into the elastic plunger components 41, and the plunger ball grooves 31 are evenly spaced along the length of the telescopic sleeve 3. During operation, the telescopic rod 4 can be slid to the appropriate length according to the spacing of the marking lines, so that the elastic plunger component 41 engages with the corresponding plunger ball groove 31, quickly fixing the position of the telescopic rod 4.

[0038] Reference Figure 3The protective baffle 5 includes a first baffle 51 and a second baffle 52. The second baffle 52 is slidably mounted on the first baffle 51, and the first baffle 51 has a cavity inside for the second baffle 52 to move. The second baffle 52 is provided with an adjusting bolt 521 for fixed connection with the first baffle 51. The first baffle 51 has a strip-shaped through hole 511 through which the adjusting bolt 521 passes, and the second baffle 52 has a threaded hole 522 that is threaded to engage with the adjusting bolt 521. The adjusting bolt 521 passes through the strip-shaped through hole 511 and locks with the threaded hole 522, thereby fixing the first baffle 51 and the second baffle 52. At the same time, the length of the second baffle 52 extending out of the first baffle 51 can be adjusted along the length direction of the strip-shaped through hole 511, thereby adjusting the overall height of the protective baffle 5.

[0039] Reference Figure 4 The fixing structure includes a locking block 42 installed on the end of the telescopic rod 4 near the first baffle 51, an insertion slot 512 formed in the first baffle 51 for the telescopic rod 4 to be inserted into, a locking groove 5121 formed in the inner wall of the insertion slot 512 and engaging with the locking block 42, and an unlocking component installed on the first baffle 51 for releasing the locking block 42 from locking. The locking blocks 42 are symmetrically arranged on the telescopic rod 4 along the axial direction of the telescopic rod 4. The telescopic rod 4 is equipped with a first spring 513 for fixed connection with the locking blocks 42, and the telescopic rod 4 has an installation groove 514 for mounting the first spring 513 and the locking blocks 42. The first spring 513 is a compression spring, one end of which is fixed to the inner wall of the installation groove 514, and the other end is fixedly connected to the locking block 42. The locking block 42 has a guide slope 421, which faces the first baffle 51. When the telescopic rod 4 is inserted into the first baffle 51, the inner wall of the opening of the insertion slot 512 just abuts against the guide slope 421, squeezing the locking block 42 and compressing the first spring 513, causing the locking block 42 to retract into the mounting slot 514. After the locking block 42 is aligned with the locking slot 5121, the locking block 42 automatically embeds into the locking slot 5121 under the elastic action of the first spring 513, realizing the fixed connection between the telescopic rod 4 and the first baffle 51.

[0040] Reference Figure 4The unlocking assembly includes an unlocking button 6 located on the side of the first baffle 51 away from the telescopic rod 4, a push post 61 mounted on the unlocking button 6 facing the locking block 42, and a second spring 62 for resetting the unlocking button 6. The first baffle 51 has an unlocking cavity 515 for the push post 61 to move in, and the unlocking cavity 515 is connected to the locking groove 5121. The push post 61 and the unlocking button 6 are integrally formed, and the end of the push post 61 near the locking block 42 has a driving slope 611 for driving the locking block 42 to disengage from the locking groove 5121. The driving slope 611 is adapted to the guide slope 421. When the end of the push post 61 with the driving slope 611 abuts against the inner wall of the locking groove 5121, the locking block 42 just disengages from the locking groove 5121, thereby unlocking the telescopic rod 4 from the first baffle 51. The second spring 62 is a compression spring, one end of which is fixedly connected to the inner wall of the unlocking cavity 515, and the other end of which is fixed to the side wall of the push column 61.

[0041] Reference Figure 5 A tracked chassis 523 is installed at the end of the second baffle 52 near the marking line, and the tracked chassis 523 is fixedly connected to the second baffle 52 by bolts. The structure of the tracked chassis 523 is consistent with that of the tracked chassis 523 in the prior art, the difference being that the tracked chassis 523 rolls synchronously with the movement of the fuel injection vehicle body 1. A flexible baffle 524 is installed on the side of the second baffle 52 near the road, and the flexible baffle 524 is fixed to the second baffle 52 by bolts. The flexible baffle 524 abuts against the marking line to prevent maintenance oil from leaking from the gap between the protective baffle 5 and the road and contaminating the marking line.

[0042] The implementation principle of the protective device for a highway maintenance spraying vehicle according to an embodiment of this application is as follows: Before the operation begins, the length of the telescopic rod 4 extending beyond the telescopic sleeve 3 is adjusted by the cooperation of the elastic plunger 41 of the telescopic rod 4 and the plunger ball groove 31, so that the protective baffles 5 at both ends of the telescopic rod 4 are above the marking lines on both sides of the highway. Then, along the length direction of the strip-shaped through hole 511, the position of the fixing bolt 517 is adjusted, thereby adjusting the tracked chassis 523 on the second baffle 52 to make it fit with the marking lines. Then, the main body 1 of the spraying vehicle is started and moved along the highway. At the same time, the spraying assembly 2 is started to spray maintenance oil onto the highway. Under the physical obstruction formed by the protective baffles 5 and the tracked chassis 523, the contamination of the marking lines by the maintenance oil is reduced. Example 2: Except for the different form of the fixed structure, the structure of this example is the same as that of Example 1.

[0043] Reference Figure 6The fixing structure includes a fixing sleeve 516 installed on the side of the first baffle 51 facing the telescopic rod 4, a fixing bolt 517 installed on the fixing sleeve 516, a first through hole 5161 opened in the fixing sleeve 516 for the fixing bolt 517 to pass through, a second through hole 43 opened in the telescopic rod 4 corresponding to the first through hole 5161, and a fixing nut 518 that locks into the fixing bolt 517. The end of the telescopic rod 4 near the first baffle 51 has a positioning ring 44 for positioning the first through hole 5161 and the second through hole 43, and the inner wall of the fixing sleeve 516 has a positioning surface 5162 that abuts against the positioning ring 44. After the fixing bolt 517 passes through the first through hole 5161 and the second through hole 43, it engages with the fixing nut 518 by thread, thereby achieving a fixed connection between the first baffle 51 and the telescopic rod 4.

[0044] The implementation principle of the protective device for a highway maintenance spraying vehicle according to an embodiment of this application is as follows: When installing the telescopic rod 4 and the protective baffle 5, the telescopic rod 4 is inserted into the fixing sleeve 516, and the positioning ring 44 of the telescopic rod 4 abuts against the positioning surface 5162 of the fixing sleeve 516. At this time, the first through hole 5161 of the fixing sleeve 516 is aligned with the second through hole 43 of the telescopic rod 4. After the fixing bolt 517 passes through the first through hole 5161 and the second through hole 43, it engages with the fixing nut 518 to fix the telescopic rod 4 and the first baffle 51, thereby completing the installation of the telescopic rod 4 and the protective baffle 5. Then, the operation in Embodiment 1 above is repeated to achieve the protection of the marking line.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A protective device for a highway maintenance spray truck, comprising a spray truck body (1) and a spraying assembly (2) disposed on the spray truck body (1), characterized in that, It also includes a telescopic sleeve (3) disposed on the main body (1) of the fuel injection vehicle, a telescopic rod (4) slidably disposed at both ends of the telescopic sleeve (3), a protective baffle (5) detachably disposed at the end of the telescopic rod (4) away from the telescopic sleeve (3), and a fixing structure for fixing the protective baffle (5) and the telescopic rod (4).

2. The protective device for a highway maintenance spraying vehicle according to claim 1, characterized in that, The telescopic rod (4) has an elastic plunger (41) on its outer side wall, and the telescopic sleeve (3) has a plurality of plunger ball grooves (31) along its length that are locked and fitted with the elastic plunger (41).

3. The protective device for a highway maintenance spraying vehicle according to claim 1, characterized in that, The protective baffle (5) is provided with a tracked chassis (523) facing the road side for abutting the marking line.

4. The protective device for a highway maintenance spraying vehicle according to claim 3, characterized in that, The protective baffle (5) includes a first baffle (51) fixedly connected to the telescopic rod (4) and a second baffle (52) slidably disposed on the first baffle (51), and the tracked chassis (523) is disposed on the second baffle (52).

5. A protective device for a highway maintenance spraying vehicle according to claim 4, characterized in that, The second baffle (52) is provided with an adjusting bolt (521) for fixed connection with the first baffle (51). The side wall of the first baffle (51) is provided with a strip-shaped through hole (511) for the adjusting bolt (521) to pass through. The second baffle (52) is provided with a threaded hole (522) that is threaded to the adjusting bolt (521).

6. A protective device for a highway maintenance spraying vehicle according to claim 5, characterized in that, The fixing structure includes a snap-fit ​​block (42) disposed on the end of the telescopic rod (4) near the first baffle (51), a plug groove (512) opened on the first baffle (51) for the end of the telescopic rod (4) to be inserted, a snap-fit ​​groove (5121) opened on the inner wall of the plug groove (512) and locked in cooperation with the snap-fit ​​block (42), and an unlocking component disposed on the first baffle (51) for releasing the locking state of the snap-fit ​​block (42). The telescopic rod (4) is provided with a first spring (513) for fixed connection with the snap-fit ​​block (42), and the telescopic rod (4) is provided with an installation groove (514) for installing the first spring (513) and the snap-fit ​​block (42).

7. A protective device for a highway maintenance spraying vehicle according to claim 6, characterized in that, The unlocking assembly includes an unlocking button (6) disposed on the outer wall of the first baffle (51) away from the telescopic rod (4), a push post (61) disposed on the unlocking button (6) facing the locking block (42), and a second spring (62) for resetting the unlocking button (6). The first baffle (51) has an unlocking cavity (515) for the push post (61) to move, and the unlocking cavity (515) is in communication with the locking groove (5121).

8. A protective device for a highway maintenance spraying vehicle according to claim 7, characterized in that, The snap-fit ​​block (42) is provided with a guide ramp (421) for retracting into the mounting groove (514), and the end of the push post (61) facing the snap-fit ​​block (42) is provided with a drive ramp (611) for driving the snap-fit ​​block (42) to disengage from the snap-fit ​​groove (5121).

9. A protective device for a highway maintenance spraying vehicle according to claim 5, characterized in that, The fixing structure includes a fixing sleeve (516) disposed on the side of the first baffle (51) facing the telescopic rod (4), a fixing bolt (517) disposed on the fixing sleeve (516), a first through hole (5161) opened in the fixing sleeve (516) and through which the fixing bolt (517) passes, a second through hole (43) opened in the telescopic rod (4) and corresponding to the first through hole (5161), and a fixing nut (518) that locks into the fixing bolt (517).

10. A protective device for a highway maintenance spraying vehicle according to claim 9, characterized in that, The telescopic rod (4) is provided with a positioning ring (44) for positioning the second through hole (43) and the first through hole (5161), and the inner wall of the fixed sleeve (516) is provided with a positioning surface (5162) that abuts against the positioning ring (44).

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