A lifting device of a front water spraying frame of a road maintenance vehicle and the road maintenance vehicle

Abstract

The utility model discloses a kind of lifting devices of road maintenance vehicle front water spray frame, comprising: two guide shafts are arranged on front water spray frame mounting bracket left and right parallelly;Transition lifting frame and main lifting frame left and right ends are slidably connected two guide shafts respectively, to make transition lifting frame and main lifting frame can move up and down along guide shaft;Front electric push rod and rear electric push rod are respectively arranged in transition lifting frame front and back side, transition lifting frame moves up and down by the telescopic of front electric push rod, and the spray pole spray frame assembly connected with main lifting frame moves up and down by the initiative and / or passive of rear electric push rod. The utility model carries out two section structure lifting to road maintenance vehicle front water spray frame, under the action of two lifting power sources, improve the ground clearance of maintenance vehicle front water spray frame under non-operation condition, and enough to improve lifting speed.

Description

Technical Field

[0001] This utility model relates to the field of sanitation equipment technology, specifically, it is a lifting device for the front spray frame of a road maintenance vehicle and the road maintenance vehicle itself. Background Technology

[0002] Currently, in the municipal sanitation sector, road maintenance vehicles are widely used for street cleaning due to their small size and comprehensive functions. However, due to the complexity of road conditions, the front water spray frame of most road maintenance vehicles on the market is generally too low to the ground when not in operation due to the limitations of the chassis. This can cause the front water spray frame to come into hard contact with speed bumps and potholes during operation, resulting in damage to the front water spray frame.

[0003] Existing road maintenance vehicles use a single electric actuator to lift the front water spray frame, with the lifting height limited to the actuator's specified stroke. However, these vehicles typically use high-load electric actuators for lifting the front water spray frame. Using a long-stroke actuator results in a longer lifting time to the specified height due to its low operating speed, impacting work efficiency. Conversely, using a short-stroke actuator leads to insufficient lifting height, a smaller approach angle, and a risk of damage to the front water spray frame. Utility Model Content

[0004] To address the technical problems of low operating speed or insufficient lifting height of the electric push rods used in the front water spray frame lifting of existing technologies, the purpose of this utility model is to provide a lifting device for the front water spray frame of a road maintenance vehicle and a road maintenance vehicle in general. The device involves lifting the front water spray frame of the road maintenance vehicle in two stages. Using two electric push rods as power sources, a short-stroke electric push rod is employed to lift the front water spray frame in two stages. The two electric push rods operate synchronously, achieving a higher lifting height simultaneously without affecting efficiency, thereby increasing the vehicle's approach angle and improving its passability.

[0005] The present invention solves the above problems through the following technical solution:

[0006] A lifting device for the front spray frame of a road maintenance vehicle includes: a front spray frame mounting bracket, a front electric push rod, a guide shaft, a transition lifting frame, a main lifting frame, and a rear electric push rod; two guide shafts are arranged parallel to each other on the front spray frame mounting bracket; the two guide shafts are slidably connected to the left and right ends of the transition lifting frame and the main lifting frame, so that the transition lifting frame and the main lifting frame can move up and down along the guide shafts; the front electric push rod and the rear electric push rod are respectively arranged on the front and rear sides of the transition lifting frame, one end of the front electric push rod is connected to the front spray frame mounting bracket, and the other end is connected to the transition lifting frame, so that the transition lifting frame can move up and down through the extension and retraction of the front electric push rod; one end of the rear electric push rod is connected to the transition lifting frame, and the other end is connected to the main lifting frame, so that the spray boom and spray frame assembly connected to the main lifting frame can move up and down through the active and / or passive movement of the rear electric push rod.

[0007] As a further improvement, the lifting device is also equipped with guide shaft fixing seats, which are fixed in pairs on the upper and lower sides of the front water spray frame mounting bracket to facilitate the installation of the guide shaft.

[0008] As a further improvement, both the transition lifting frame and the main lifting frame are equipped with sliding bearings, which are sleeved on the outside of the guide shaft.

[0009] As a further improvement, the front electric push rod is located on the front side of the transition lifting frame, and has a first rod end and a first tail end connected together. The first tail end is connected to the upper side of the front water spray frame mounting bracket, and the first rod end is connected to the middle of the front side of the transition lifting frame.

[0010] As a further improvement, the first tail end is hinged to the upper side of the front water spray bracket mounting bracket.

[0011] As a further improvement, the rear electric push rod is located on the rear side of the transition lifting frame and has a second rod end and a second tail end connected to each other. The second rod end is connected to the middle of the rear side of the transition lifting frame, and the second tail end is connected to the lower rear side of the main lifting frame.

[0012] As a further improvement, the rear electric push rod is hinged to the main lifting frame and / or the transition lifting frame.

[0013] As a further improvement, the transition lifting frame is T-shaped; and / or the main lifting frame has grooves on both the top and bottom to facilitate the installation and avoidance of the second rod end and the second tail end.

[0014] As a further improvement, the front electric actuator communicates with the rear electric actuator to achieve synchronous operation.

[0015] Furthermore, this utility model also solves the above problems through the following technical solutions:

[0016] A road maintenance vehicle is provided with a spray boom and spray frame assembly, and a lifting device for the front water spray frame of the road maintenance vehicle as described above, which is connected to the spray boom and spray frame assembly, so as to drive the spray boom and spray frame assembly to move up and down through the lifting device.

[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0018] This invention features a two-section lifting structure for the front water spray frame of a road maintenance vehicle. With the assistance of two lifting power sources, the ground clearance of the front water spray frame is increased when not in operation, thereby increasing the vehicle's approach angle and improving its passability. This design also prevents damage to the front water spray frame when encountering potholes or speed bumps during operation, especially when not in operation. Furthermore, the simultaneous operation of the two lifting power sources increases the lifting speed. Attached Figure Description

[0019] Figure 1 This is a front view of the lifting device of the front water spray frame during operation of this utility model;

[0020] Figure 2 This is a schematic diagram of the rear of the lifting device of the front water spray frame during operation of this utility model;

[0021] Figure 3 This is a front view of the lifting device of the front water spray frame when not in operation according to this utility model;

[0022] Figure 4 This is a schematic diagram of the rear of the lifting device of the front water spray frame when not in operation.

[0023] Reference numerals in the attached drawings: 1. Front spray frame mounting bracket; 2. Front electric push rod; 2-1. First rod end; 2-2. First tail end; 3. Guide shaft fixing seat; 4. Guide shaft; 5. Sliding bearing; 6. Transition lifting frame; 7. Main lifting frame; 8. Spray bar and spray frame assembly; 9. Rear electric push rod; 9-1. Second rod end; 9-2. Second tail end. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example:

[0026] Combined with appendix Figure 1-4As shown, a lifting device for the front water spray frame of a road maintenance vehicle includes: a front water spray frame mounting bracket 1, a front electric push rod 2, a guide shaft fixing seat 3, a guide shaft 4, a sliding bearing 5, a transition lifting frame 6, a main lifting frame 7, a spray bar and spray frame assembly 8, and a rear electric push rod 9, etc.

[0027] The guide shaft fixing seats 3 are fixed in pairs on the upper and lower sides of the front spray frame mounting bracket 1 to facilitate the installation of the guide shafts 4, so that the two guide shafts are arranged parallel to each other. The left and right ends of the transition lifting frame 6 and the main lifting frame 7 are respectively connected to the left and right guide shafts, and the transition lifting frame 6 and the main lifting frame 7 can move up and down along the guide shafts; preferably, the transition lifting frame 6 and the main lifting frame 7 are each equipped with a sliding bearing 5. The guide shaft 4 passes through the upper guide shaft fixing seat 3, then through the transition lifting frame 6 and the main lifting frame 7, and then connects to the lower guide shaft fixing seat 3 to limit the installation of the transition lifting frame 6 and the main lifting frame 7.

[0028] The front electric push rod 2 has a first rod end 2-1 and a first tail end 2-2 connected together, which are disposed on the front side of the transition lifting frame 6. The first tail end 2-2 of the front electric push rod 2 is connected to the upper side of the front water spray frame mounting bracket 1. Preferably, it is hinged to the upper side of the front water spray frame mounting bracket 1 so that the front electric push rod 2 can rotate back and forth along the front water spray frame mounting bracket 1. The first rod end 2-1 of the front electric push rod 2 is connected to the middle of the front side of the transition lifting frame 6 so that the transition lifting frame 6 can be moved up and down by the extension and retraction of the front electric push rod 2.

[0029] The rear electric push rod 9 has a second rod end 9-1 and a second tail end 9-2 connected to each other, and is located on the rear side of the transition lifting frame 6. The second rod end 9-1 of the rear electric push rod 9 is connected to the middle of the rear side of the transition lifting frame 6, preferably hinged to the transition lifting frame 6, and can rotate left and right along the transition lifting frame 6; the second tail end 9-2 of the rear electric push rod 9 is connected to the lower rear side of the main lifting frame 7, preferably hinged to the main lifting frame 7; the main lifting frame 7 is connected to the spray bar and spray frame assembly 8, so that the spray bar and spray frame assembly 8 can be moved up and down through the main lifting frame 7.

[0030] When the front water spray frame needs to operate, the first end 2-1 of the front electric push rod 2 extends, driving the transition lifting frame 6 to slide down along the guide shaft 4. The lifting frame 6, through the rear electric push rod 9, drives the main lifting frame 7 and the spray boom assembly to slide down passively. At the same time, the second end 9-1 of the rear electric push rod 9 extends, driving the main lifting frame 7 and the spray boom assembly 8 to slide down further actively. After the two electric push rods work simultaneously to reach the specified stroke, the ground clearance of the front water spray frame is met during operation.

[0031] When the front spray frame is not needed, the first end 2-1 of the front electric push rod 2 and the second end 9-1 of the rear electric push rod 9 retract synchronously. The front electric push rod 2 drives the transition lifting frame 6 to slide upward. The lifting frame 6 drives the main lifting frame 7 and the spray bar and spray frame assembly to slide upward through the rear electric push rod 9. At the same time, the rear electric push rod 9 drives the main lifting frame 7 and the spray bar and spray frame assembly 8 to slide upward. After the two electric push rods work and retract into place at the same time, the front spray frame is raised to the highest position.

[0032] In another optional embodiment, the transition lift frame 6 is T-shaped; the front spray frame mounting bracket 1 is n-shaped; and the main lift frame 7 has grooves on both the top and bottom to facilitate the installation and avoidance of the second rod end 9-1 and the second tail end 9-2. In this embodiment, the middle part of the transition lift frame 6 is installed on the front side of the middle part of the main lift frame 7.

[0033] Preferably, the front electric push rod 2 and the rear electric push rod 9 communicate with the controller of the front water spray frame, so that the front electric push rod 2 and the rear electric push rod 9 can be controlled separately according to the operating status of the front water spray frame.

[0034] This invention features a two-section lifting structure for the front water spray frame of a road maintenance vehicle. With the assistance of two lifting power sources, the ground clearance of the front water spray frame is increased when not in operation, thereby increasing the vehicle's approach angle and improving its passability. This design also prevents damage to the front water spray frame when encountering potholes or speed bumps during operation, especially when not in operation. Furthermore, the simultaneous operation of the two lifting power sources increases the lifting speed.

[0035] In another embodiment, a road maintenance vehicle is provided with a spray boom and spray frame assembly and a lifting device connected to the spray boom and spray frame assembly, so as to drive the spray boom and spray frame assembly to move up and down through the lifting device.

[0036] Although the present invention has been described herein with reference to illustrative embodiments, the above embodiments are merely preferred embodiments of the present invention, and the implementation of the present invention is not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A lifting device for the front spray frame of a road maintenance vehicle, characterized in that, include: Front water spray bracket mounting bracket, front electric push rod, guide shaft, transition lifting bracket, main lifting bracket, and rear electric push rod; Two guide shafts are set parallel to each other on the front spray frame mounting bracket; the two guide shafts are slidably connected to the left and right ends of the transition lift frame and the main lift frame, so that the transition lift frame and the main lift frame can move up and down along the guide shafts; The front electric push rod and the rear electric push rod are respectively installed on the front and rear sides of the transition lift frame. One end of the front electric push rod is connected to the front spray frame mounting bracket, and the other end is connected to the transition lift frame, so as to drive the transition lift frame to move up and down through the extension and retraction of the front electric push rod; one end of the rear electric push rod is connected to the transition lift frame, and the other end is connected to the main lift frame, so as to actively and / or passively drive the spray bar and spray frame assembly connected to the main lift frame to move up and down through the rear electric push rod.

2. The lifting device for the front spray frame of a road maintenance vehicle according to claim 1, characterized in that, The lifting device is also equipped with guide shaft fixing seats, which are fixed in pairs on the upper and lower sides of the front water spray frame mounting bracket to facilitate the installation of the guide shaft.

3. The lifting device for the front spray frame of a road maintenance vehicle according to claim 1, characterized in that, Both the transition lifting frame and the main lifting frame are equipped with sliding bearings, which are sleeved on the outside of the guide shaft.

4. The lifting device for the front spray frame of a road maintenance vehicle according to claim 1, characterized in that, The front electric push rod is located on the front side of the transition lifting frame and has a first rod end and a first tail end connected together. The first tail end is connected to the upper side of the front water spray frame mounting bracket, and the first rod end is connected to the middle of the front side of the transition lifting frame.

5. The lifting device for the front spray frame of a road maintenance vehicle according to claim 4, characterized in that, The first tail end is hinged to the upper side of the front water spray bracket mounting bracket.

6. The lifting device for the front spray frame of a road maintenance vehicle according to claim 1, characterized in that, The rear electric push rod is located on the rear side of the transition lifting frame and has a second rod end and a second tail end connected to each other. The second rod end is connected to the middle of the rear side of the transition lifting frame, and the second tail end is connected to the lower rear side of the main lifting frame.

7. The lifting device for the front spray frame of a road maintenance vehicle according to claim 6, characterized in that, The rear electric push rod is hinged to the main lifting frame and / or the transition lifting frame.

8. The lifting device for the front spray frame of a road maintenance vehicle according to claim 6, characterized in that, The transition lifting frame is T-shaped; and / or The main lifting frame has grooves on both the top and bottom to facilitate the installation and avoidance of the second rod end and the second tail end.

9. A lifting device for the front spray frame of a road maintenance vehicle according to any one of claims 1-8, characterized in that, The front electric push rod communicates with the rear electric push rod to achieve synchronous operation.

10. A road maintenance vehicle, characterized in that, The vehicle is equipped with a spray boom and spray frame assembly and a lifting device for the front water spray frame of a road maintenance vehicle as described in any one of claims 1-9, which is connected to the spray boom and spray frame assembly so as to drive the spray boom and spray frame assembly to move up and down.

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