Work vehicle

Abstract

The utility model discloses an operation vehicle, and relates to the technical field of special operation. The working vehicle comprises a vehicle body, a guardrail assembly and a driving assembly, the guardrail assembly is arranged at the front end and / or the rear end of the vehicle body, the guardrail assembly has a supporting state and a guardrail state, the guardrail assembly supports a road surface in the supporting state, and an anti-collision guardrail of the vehicle body is constructed in the guardrail state; the driving assembly drives the guardrail assembly to be switched between the guardrail state and the supporting state. According to the working vehicle and the guardrail assembly of the working vehicle, the vehicle body is protected in the guardrail state and supported in the supporting state, multiple functions of the guardrail assembly are achieved, and the cost and the weight of the working vehicle are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to special operation technical field especially relates to a kind of operation vehicles. BACKGROUND

[0002] In related art, the lifting platform of operation vehicle (such as aerial working truck, multi-functional road maintenance truck etc.) with lifting platform can be elevated to carry out high-altitude operation, but the lifting of lifting platform can lead to the center of gravity of the vehicle body rising, when operating, only rely on the support of tire, when the activity amplitude of person on lifting platform is too large, it can lead to the swing of vehicle body, and the swing of vehicle body can make the personnel of high-altitude operation feel unsafe, and when tire appears blowout or deflation, vehicle body can also have the possibility of overturning, for this, adding support leg device on the vehicle can increase the safety of the operation of the vehicle.But support leg device needs to be separately set, which can lead to the increase of cost. SUMMARY

[0003] The utility model aims at at least one of the technical problems in the related art.

[0004] Therefore, one purpose of the utility model is to provide an operation vehicle, the guardrail assembly of operation vehicle protects vehicle body in guardrail state, and supports vehicle body in support state, realizes the multifunction of guardrail assembly, reduces the cost and weight of operation vehicle.

[0005] According to the operation vehicle of the utility model embodiment, the operation vehicle includes vehicle body, guardrail assembly and drive assembly, the vehicle body is provided with lifting platform, the guardrail assembly is arranged at the front end and / or rear end of the vehicle body, the guardrail assembly has support state and guardrail state, the guardrail assembly supports road surface when in the support state, and is configured as the crash barrier of the vehicle body when in the guardrail state, and the drive assembly drives the guardrail assembly to convert between the guardrail state and the support state.

[0006] According to the operation vehicle of the utility model embodiment, the guardrail assembly of operation vehicle protects vehicle body in guardrail state, and supports vehicle body in support state, realizes the multifunction of guardrail assembly, reduces the cost and weight of operation vehicle.

[0007] In addition, the operation vehicle according to the above embodiment of the utility model can also have the following additional technical features:

[0008] Optionally, the guardrail assembly includes at least one guardrail, the guardrail is rotatably connected to the vehicle body, the guardrail has support end and drive end, the drive end is rotatably connected to the drive assembly, and the support end supports road surface in the support state and is separated from ground in the guardrail state.

[0009] Optionally, the guardrail assembly includes a first guardrail and a second guardrail, the first guardrail and the second guardrail are rotatably connected to the vehicle body, the drive assembly transmission-connects the drive end of the first guardrail and the drive end of the second guardrail, and the drive assembly synchronously drives the first guardrail and the second guardrail.

[0010] Optionally, in the supporting state, one of the first guardrail and the second guardrail is inclined in a direction gradually away from the other in a top-down direction; in the guardrail state, the first guardrail and the second guardrail are constructed as strips distributed in the left-right direction.

[0011] Optionally, the driving assembly includes a transmission member and a driving member that drives the transmission member to move in the up and down directions, the transmission member is provided with a first slide groove and a second slide groove, the first slide groove and the second slide groove extend in the left and right directions, the driving end of the first guardrail has a first slider, the driving end of the second guardrail has a second slider, the first slider is rotatably and slidably arranged in the first slide groove, and the second slider is rotatably and slidably arranged in the second slide groove.

[0012] Optionally, in the supporting state, the first slider and the second slider are relatively far apart, and in the guardrail state, the first slider and the second slider are relatively close.

[0013] Optionally, the driving member is rotationally connected to the vehicle body; and / or, the driving member is rotationally connected to the transmission member.

[0014] Optionally, the guardrail assembly includes a guardrail and a support pad, the guardrail has a driving end and a supporting end, the vehicle body is rotatably connected to the guardrail, and the rotation connection point is located between the driving end and the supporting end, the driving end is transmission-connected to the driving assembly, and the support pad is spherically hinged to the supporting end.

[0015] Optionally, the work vehicle further includes a cantilever assembly, which extends in an up-down direction, with an upper end of the cantilever assembly connected to the vehicle body and a lower end rotatably connected to the guardrail assembly.

[0016] Optionally, the guardrail assembly includes at least one guardrail, the guardrail includes a first telescopic part and a second telescopic part, the second telescopic part is telescopically arranged on the first telescopic part, and the first telescopic part is driven to rotate by the driving assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a working vehicle in some embodiments of the present utility model.

[0018] Figure 2 It is a schematic diagram of a working vehicle in some embodiments of the present invention (support state).

[0019] Figure 3 is a schematic view of the work vehicle in some embodiments of the present application (first transition state).

[0020] Figure 4 is a schematic view of the work vehicle in some embodiments of the present application (second transition state).

[0021] Figure 5 is a schematic view of the work vehicle in some embodiments of the present application (guardrail state).

[0022] Figure 6 is a side view of the work vehicle in some embodiments of the present application.

[0023] Figure 7 is a schematic view of the drive assembly, the cantilever assembly and the guardrail assembly in some embodiments of the present application.

[0024] Figure 8 is a schematic view of the work vehicle in some other embodiments of the present application (guardrail state).

[0025] Figure 9 is a schematic view of the work vehicle in some other embodiments of the present application (third transition state).

[0026] Figure 10 is a schematic view of the work vehicle in some other embodiments of the present application (support state).

[0027] Reference signs:

[0028] Work vehicle 100, vehicle body 10, guardrail assembly 20, first guardrail 21, first sliding block 211, first support pad 212, second guardrail 22, second sliding block 221, second support pad 222, first telescopic part 201, second telescopic part 202, drive assembly 30, drive member 31, transmission member 32, first sliding groove 321, second sliding groove 322, cantilever assembly 40, first cantilever 41, second cantilever 42, lifting platform 50. DETAILED DESCRIPTION

[0029] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0030] In the related art, the work vehicle is provided with a lifting platform and a supporting leg device, when the work personnel performs high-altitude work through the lifting platform, the supporting leg device can be supported on the road surface to stabilize the work vehicle, avoid safety hazards of the work personnel, and the work vehicle is provided with a guardrail for protecting the vehicle body; however, the setting of the guardrail and the supporting leg device greatly increases the weight and cost of the work vehicle. The work vehicle can be a high-altitude work vehicle, a cleaning vehicle, a road maintenance vehicle or other environmental sanitation vehicles with a lifting platform.

[0031] Therefore, the utility model provides a work vehicle 100, the guardrail assembly 20 of work vehicle 100 protects vehicle body 10 in guardrail state and supports vehicle body 10 in supporting state, realizes the multifunction of guardrail assembly 20, reduces the cost and weight of work vehicle 100.

[0032] As Figures 1 to 7 , according to the work vehicle 100 of the utility model embodiment, the work vehicle 100 includes a vehicle body 10, a guardrail assembly 20 and a driving assembly 30.

[0033] Among them, the vehicle body 10 is provided with a lifting platform 50, the guardrail assembly 20 is arranged at the front end and / or rear end of the vehicle body 10, the guardrail assembly 20 has a supporting state and a guardrail state, the guardrail assembly 20 supports the road surface in the supporting state, which is convenient for stabilizing the vehicle body when the work vehicle 100 performs high-altitude work, meets the safety requirements of special equipment work, the guardrail assembly 20 is constructed as a crash barrier of the vehicle body 10 in the guardrail state, so as to play a role in protecting the vehicle body 10, avoiding damage to the vehicle body 10 by external impact, and the driving assembly 30 drives the guardrail assembly 20 to move, so as to convert the guardrail assembly 20 between the guardrail state and the supporting state, meeting the stable support and crash protection requirements of the work vehicle 100.

[0034] Therefore, the guardrail assembly 20 of the work vehicle 100 protects the vehicle body 10 in the guardrail state and supports the vehicle body 10 in the supporting state, realizes the multifunction of the guardrail assembly 20, and reduces the cost and weight of the work vehicle 100.

[0035] The guardrail assembly 20 also has a first transition state and a second transition state, and the guardrail assembly 20 is sequentially converted into the supporting state, the first transition state, the second transition state and the guardrail state in order. Figures 2 to 5 Specifically, the guardrail assembly 20 rotates a first predetermined angle in the supporting state to convert to the first transition state, then rotates a second predetermined angle in the first transition state to convert to the second transition state, and finally rotates a third predetermined angle in the second transition state to convert to the guardrail state.

[0036] As Figures 1 to 7In some embodiments of the utility model, guardrail assembly 20 includes at least one guardrail, guardrail rotationally connects car body 10, guardrail has support end and drive end, drive end is rotationally connected with drive assembly 30, the rotationally connected point of car body 10 and guardrail is located between the support end and drive end of guardrail, drive assembly 30 drives guardrail assembly 20 to switch to guardrail state, in this process, drive assembly 30 drives the drive end of guardrail to rotate around rotationally connected point, makes the support end of guardrail rotate around rotationally connected point to support on the road surface, drive assembly 30 drives guardrail assembly 20 to switch to guardrail state, in this process, drive assembly 30 drives the drive end of guardrail to rotate around rotationally connected point, makes the support end of guardrail rotate around rotationally connected point to separate from the ground, in this way, can greatly improve the applicability of guardrail assembly 20, makes guardrail assembly 20 can support on the road surface of unevenness by drive assembly 30 drive guardrail to rotate different angles, to improve the operation stability of operation vehicle 100.

[0037] As Figures 1 to 5 In some embodiments of the utility model, guardrail assembly 20 includes first guardrail 21 and second guardrail 22.

[0038] Wherein, first guardrail 21 and second guardrail 22 rotationally connect car body 10, drive assembly 30 is transmission connected the drive end (such as Figure 1 the upper end of first guardrail 21) of first guardrail 21 and the drive end (such as Figure 1 the upper end of second guardrail 22) of second guardrail 22, and drive assembly 30 synchronously drives first guardrail 21 and second guardrail 22, can further improve the operation stability of operation vehicle 100.

[0039] It can be understood that when operation vehicle 100 needs to be supported, drive assembly 30 drives first guardrail 21 and second guardrail 22 to rotate relative to car body 10, makes the support end (such as Figure 1 the lower end of first guardrail 21) of first guardrail 21 and the support end (such as Figure 1 the lower end of second guardrail 22) of second guardrail 22 support on the road surface, to increase the support area of guardrail assembly 20 and road surface, provide stability for the high-altitude operation of operation vehicle 100, guarantee the safety of high-altitude operation, when operation vehicle 100 needs to be prevented from colliding, drive assembly 30 drives first guardrail 21 and second guardrail 22 to rotate relative to each other, makes the support end of first guardrail 21 and the support end of second guardrail 22 away from the road surface, to make first guardrail 21 and second guardrail 22 constitute the anticollision guardrail of car body 10, to realize the anticollision of car body 10, in addition, by drive assembly 30 synchronously driving first guardrail 21 and second guardrail 22 to rotate, the gravity center of operation vehicle 100 supported on the road surface is stable, avoids operation vehicle 100 to tip over.

[0040] As Figures 1 to 5In some embodiments of the utility model, one of first guardrail 21 and second guardrail 22 is inclined to the direction gradually far away from the other in the direction from top to bottom in the supporting state;In guardrail state, first guardrail 21 and second guardrail 22 are configured as strip along the left and right direction;In this way, the support stability of guardrail assembly 20 can be further improved, and the anti-collision effect of guardrail assembly 20 is improved.

[0041] In detail, first guardrail 21 and second guardrail 22 are driven to rotate by driving assembly 30 to switch to the supporting state, at this time, one of first guardrail 21 and second guardrail 22 is inclined to the direction gradually far away from the other in the direction from top to bottom;For example, first guardrail 21 is inclined to the direction gradually far away from second guardrail 22 in the direction from top to bottom, and second guardrail 22 is inclined to the direction gradually far away from first guardrail 21 in the direction from top to bottom, in this way, first guardrail 21 and second guardrail 22 can provide support for vehicle body 10 of working vehicle 100 in the up-down direction and the left-right direction, to further improve the stability of guardrail assembly 20.

[0042] In addition, first guardrail 21 and second guardrail 22 are driven to rotate by driving assembly 30 to switch to the guardrail state, at this time, first guardrail 21 and second guardrail 22 are configured as strip along the left and right direction;For example, first guardrail 21 extends along the left and right direction in the guardrail state, and second guardrail 22 extends along the left and right direction in the guardrail state, and first guardrail 21 and second guardrail 22 are distributed along the left and right direction to form strip along the left and right direction, in this way, guardrail assembly 20 can shield vehicle body 10 in the front and rear direction to increase the anti-collision area of vehicle body 10, thereby improving the anti-collision effect.

[0043] The driving mode of driving assembly 30 to synchronously drive first guardrail 21 and second guardrail 22 has many kinds, the utility model provides the following implementation mode to explain.

[0044] Implementation mode 1

[0045] The driving assembly 30 comprises a transmission member 32 and a driving member 31 driving the transmission member 32 to move in the up-down direction, the transmission member 32 is provided with a first sliding groove 321 extending in the left-right direction, the driving end of the first guardrail 21 is provided with a first sliding block 211 rotatably and slidably arranged in the first sliding groove 321, the transmission member 32 is rotatably connected with the second guardrail 22, and the driving member 31 is rotatably connected with the vehicle body 10 and the transmission member 32; in this way, when the driving member 31 drives the transmission member 32 to move in the up-down direction, the first sliding block 211 can slide left and right along the first sliding groove 321 and rotate relative to the first sliding groove 321, so that the up-down movement of the transmission member 32 is converted into the rotary movement of the first guardrail 21, and the driving member 31 drives the second guardrail 22 to rotate through the transmission member 32, so that the first guardrail 21 and the second guardrail 22 rotate synchronously under the action of the driving member 31 to convert between the supporting state and the guardrail state, the structure is simple, synchronous driving is realized through the cooperation of the driving member 31, the transmission member 32, the first sliding groove 321 and the first sliding block 211, and the cost of the working vehicle 100 is greatly reduced.

[0046] Embodiment 2

[0047] The driving assembly 30 comprises a transmission member 32 and a driving member 31 driving the transmission member 32 to move in the up-down direction, the transmission member 32 is provided with a second sliding groove 322 extending in the left-right direction, the driving end of the second guardrail 22 is provided with a second sliding block 221 rotatably and slidably arranged in the second sliding groove 322, the transmission member 32 is rotatably connected with the first guardrail 21, and the driving member 31 is rotatably connected with the vehicle body 10 and the transmission member 32; in this way, when the driving member 31 drives the transmission member 32 to move in the up-down direction, the second sliding block 221 can slide left and right along the second sliding groove 322 and rotate relative to the second sliding groove 322, so that the up-down movement of the transmission member 32 is converted into the rotary movement of the second guardrail 22, and the driving member 31 drives the first guardrail 21 to rotate through the transmission member 32, so that the first guardrail 21 and the second guardrail 22 rotate synchronously under the action of the driving member 31 to convert between the supporting state and the guardrail state, the structure is simple, synchronous driving is realized through the cooperation of the driving member 31, the transmission member 32, the second sliding groove 322 and the second sliding block 221, and the cost of the working vehicle 100 is greatly reduced.

[0048] Embodiment 3

[0049] As Figures 1 to 5The driving assembly 30 comprises a transmission member 32 and a driving member 31 driving the transmission member 32 to move in the up-down direction, the transmission member 32 is provided with a first sliding groove 321 and a second sliding groove 322, the first sliding groove 321 and the second sliding groove 322 extend in the left-right direction, the driving end of the first guardrail 21 is provided with a first sliding block 211, the driving end of the second guardrail 22 is provided with a second sliding block 221, the first sliding block 211 is rotatably and slidably arranged in the first sliding groove 321, and the second sliding block 221 is rotatably and slidably arranged in the second sliding groove 322; in this way, when the driving member 31 drives the transmission member 32 to move in the up-down direction, the first sliding block 211 can slide left and right along the first sliding groove 321 and rotate relative to the first sliding groove 321, and the second sliding block 221 can slide left and right along the second sliding groove 322 and rotate relative to the second sliding groove 322, so that the up-down movement of the transmission member 32 is converted into the rotary movement of the first guardrail 21 and the second guardrail 22, the guardrail assembly 20 is convenient to convert between the supporting state and the guardrail state, the structure is simple, synchronous driving is realized through the cooperation of the driving member 31, the transmission member 32, the sliding grooves and the sliding blocks, and the cost of the working vehicle 100 is greatly reduced.

[0050] In addition, the sliding blocks and the guardrails can be arranged in various modes, and the rotation and sliding of the sliding blocks in the sliding grooves can be realized; for example, the first sliding block 211 is welded with the first guardrail 21, the second sliding block 221 is welded with the second guardrail 22, the first sliding block 211 and the second sliding block 221 are in a cylindrical shape, and the first sliding groove 321 and the second sliding groove 322 are in a waist hole shape, so that the first sliding block 211 is rotatably and slidably arranged in the first sliding groove 321, and the second sliding block 221 is rotatably and slidably arranged in the second sliding groove 322, so as to realize synchronous driving of the driving member 31 on the first guardrail 21 and the second guardrail 22; for another example, the first sliding block 211 is rotatably connected with the first guardrail 21, the second sliding block 221 is rotatably connected with the second guardrail 22, the first sliding block 211 is rotatably and slidably arranged in the first sliding groove 321, and the second sliding block 221 is rotatably and slidably arranged in the second sliding groove 322, through the rotatable connection between the sliding blocks and the guardrails, the relative friction between the sliding blocks and the sliding grooves can be reduced, and thus the service life of the working vehicle 100 is prolonged.

[0051] As Figures 1 to 5 In some embodiments of the utility model, the first sliding block 211 and the second sliding block 221 are relatively far away in the supporting state, and the first sliding block 211 and the second sliding block 221 are relatively close in the guardrail state; in this way, the supporting stability of the guardrail assembly 20 can be further improved, and thus the safety of the working of the working vehicle 100 is improved.

[0052] It can be understood that the driving assembly 30 drives the first guardrail 21 and the second guardrail 22 to rotate, and when switched to the supporting state, the first sliding block 211 and the second sliding block 221 relatively move away along the left-right direction, the driving end of the first guardrail 21 and the driving end of the second guardrail 22 are relatively moved away, and the supporting end of the first guardrail 21 and the supporting end of the second guardrail 22 are relatively moved close, so that the first guardrail 21 and the second guardrail 22 can form a stable structure similar to a triangle, thereby further improving the supporting stability of the guardrail assembly 20.

[0053] In addition, when switched to the guardrail state, the first sliding block 211 and the second sliding block 221 relatively move close along the left-right direction, the driving end of the first guardrail 21 and the driving end of the second guardrail 22 are relatively moved close, and the supporting end of the first guardrail 21 and the supporting end of the second guardrail 22 are relatively moved away, so that the first guardrail 21 and the second guardrail 22 can be configured as anti-collision guardrails distributed along the left-right direction.

[0054] As Figures 1 to 5 In some embodiments of the utility model, the driving part 31 is rotationally connected with the vehicle body 10, so that the driving part 31 can rotate relative to the vehicle body 10 to reduce the lateral force on the driving part 31 and avoid damage to the driving part 31; wherein the driving part 31 can be an oil cylinder.

[0055] In addition, the driving part 31 is rotationally connected with the transmission part 32; it can be understood that, due to the unevenness of the road surface, in order to adapt to the road environment, the driving part 31 can be rotationally connected with the transmission part 32, so that when the first guardrail 21 and the second guardrail 22 are switched to the supporting state, the transmission part 32 can rotate relative to the driving part 31, so that the rotation amplitude of the first guardrail 21 and the second guardrail 22 is different, to meet different road surface requirements.

[0056] As Figures 1 to 5 In some embodiments of the utility model, the guardrail assembly 20 comprises a guardrail and a supporting pad, the guardrail has a driving end and a supporting end, the vehicle body 10 is rotationally connected with the guardrail, and the rotation connection point is located between the driving end and the supporting end, the driving end is in transmission connection with the driving assembly 30, and the supporting pad is spherically articulated with the supporting end; in this way, the supporting stability of the guardrail assembly 20 can be improved, and the wear of the guardrail assembly 20 can be reduced.

[0057] Specifically, in combination with the foregoing, the guardrail includes a first guardrail 21 and a second guardrail 22, the support pad includes a first support pad 212 and a second support pad 222, the first support pad 212 is connected to the support end of the first guardrail 21, the second support pad 222 is connected to the support end of the second guardrail 22, the driving end of the first guardrail 21 and the driving end of the second guardrail 22 are in transmission connection with the driving assembly 30, the driving assembly 30 drives the first guardrail 21 and the second guardrail 22 to rotate, so that the guardrail assembly 20 is switched to the support state, at this time, the support end of the first guardrail 21 can be supported on the road surface through the first support pad 212, and the support end of the second guardrail 22 can be supported on the road surface through the second support pad 222, so that the wear of the first guardrail 21 and the second guardrail 22 on the road surface can be reduced through the first support pad 212 and the second support pad 222, and the service life of the guardrail assembly 20 is prolonged.

[0058] In addition, the support end of the first guardrail 21 is in spherical articulation with the first support pad 212, for example, one of the support end of the first guardrail 21 and the first support pad 212 is provided with a first ball, and the other is provided with a first ball seat, the first ball is rotatably arranged in the first ball seat, so that the first support pad 212 can rotate in multiple directions relative to the first guardrail 21 to adapt to complex road surfaces; similarly, the support end of the second guardrail 22 is in spherical articulation with the second support pad 222, for example, one of the support end of the second guardrail 22 and the second support pad 222 is provided with a second ball, and the other is provided with a second ball seat, the second ball is rotatably arranged in the second ball seat, so that the second support pad 222 can rotate in multiple directions relative to the second guardrail 22 to adapt to complex road surfaces.

[0059] As Figures 1 to 7 In some embodiments of the utility model, the working vehicle 100 further includes a cantilever assembly 40, the cantilever assembly 40 extends along the up-down direction, the upper end of the cantilever assembly 40 is connected to the vehicle body 10, and the lower end is rotatably connected to the guardrail assembly 20; in this way, the ground clearance of the guardrail assembly 20 can be adjusted through the cantilever assembly 40, so that the ground clearance of the guardrail assembly 20 in the working vehicle 100 meets the requirements of national standards.

[0060] Further, the cantilever assembly 40 includes a first cantilever 41 and a second cantilever 42, the first cantilever 41 and the second cantilever 42 extend along the up-down direction, the upper end of the first cantilever 41 is connected to the vehicle body 10, and the lower end is rotatably connected to the first guardrail 21, the upper end of the second cantilever 42 is connected to the vehicle body 10, and the lower end is rotatably connected to the second guardrail 22, so that the first guardrail 21 and the second guardrail 22 respectively meet the requirements of the ground clearance of the crash barrier in the national standards.

[0061] As Figures 8 to 10In some embodiments of the utility model, guardrail assembly 20 includes at least one guardrail, the guardrail includes first telescopic part 201 and second telescopic part 202, second telescopic part 202 is telescopically arranged in first telescopic part 201, first telescopic part 201 is driven to rotate by drive assembly 30;In this way, by the telescopic cooperation of first telescopic part 201 and second telescopic part 202, work vehicle 100 can adapt to complex road surface, and the applicability of work vehicle 100 is improved.

[0062] It can be understood that due to the complexity of road surface, the length of guardrail cannot meet the support demand of work vehicle 100, and the length of guardrail is limited by national standard specification, therefore, the guardrail can include first telescopic part 201 and second telescopic part 202, and second telescopic part 202 and first telescopic part 201 are telescopically cooperated;In the support state, second telescopic part 202 can be lengthened and shortened relative to first telescopic part 201 to meet the support demand of work vehicle 100;In the guardrail state, second telescopic part 202 can be lengthened and shortened relative to first telescopic part 201 to meet the requirement of standard specification. Figure 8 The guardrail state of work vehicle 100 is shown;Second telescopic part 202 can be lengthened relative to first telescopic part 201 to be from Figure 8 The third transition state of work vehicle 100 is shown;First telescopic part 201 is rotated relative to car body 10 to be from Figure 9 The third transition state of work vehicle 100 is shown;First telescopic part 201 is rotated relative to car body 10 to be from Figure 9 The support state of work vehicle 100 is shown;Second telescopic part 202 is lengthened relative to first telescopic part 201 to be from Figure 10 The support state of work vehicle 100 is shown;Second telescopic part 202 is lengthened relative to first telescopic part 201 to be from

[0063] The utility model provides a kind of work vehicle 100, it includes the structure of variable support leg rear guardrail, it can be changed into support leg structure by rear guardrail structure, can exert the characteristics of rear guardrail structure big strength, two functions of support leg and rear guardrail are combined into one, one mechanism two functions, while increasing the safety and comfort of aerial work platform operation, also can take into account the function of rear guardrail. Figure 6 As shown in the sanitary cleaning work vehicle with water tank structure and lifting platform 50, one variable support leg rear guardrail is installed at vehicle head and tail.

[0064] Among them, variable support leg rear guardrail structure (i. e. guardrail assembly 20) is retracted in driving state, in rear guardrail mode (i. e. guardrail state), mainly play the role of rear guardrail anti-collision safety, hydraulic cylinder (i. e. driving part 31) is extended to adjust left and right two rear guardrails (first guardrail 21 and second guardrail 22) to the state of horizontal with ground.

[0065] Before lifting platform 50 is lifted, variable support leg rear guardrail structure (i. e. guardrail assembly 20) is switched to support state, as shown inFigure 2 As shown, at this time, the hydraulic cylinder (i.e. the driving member 31) is shortened, and the pull plate (i.e. the transmission member 32) with a waist-shaped hole is pulled to move upward, the pull plate (i.e. the transmission member 32) with a waist-shaped hole is provided with a waist-shaped hole (i.e. the first sliding groove 321 and the second sliding groove 322), and one end (i.e. the driving end) of the half rear guardrail slides in the waist-shaped hole and rotates around the rotating hinge point of the rear guardrail support plate (i.e. the cantilever assembly 40), and the half rear guardrail appears the posture change as shown in the sequence of Figure 5 、 Figure 4 、 Figure 3 and Figure 2 Finally, the posture is switched to a supporting state, until the ball hinge and the support leg pad plate (i.e. the supporting pad) structure are in contact with the ground, and the simple support leg plays a role, and the tires of the vehicle body ensure the stability and safety of the vehicle during operation, and the stability of the vehicle body can be ensured if the tires leak.

[0066] Therefore, the embodiment of the utility model can change the original single-function rear guardrail into a support leg structure by the connecting rod mechanism, realize multiple purposes of a structure, and for a small-tonnage work vehicle 100 with a lifting platform 50, the installation of a support leg can be avoided, the structure is simplified, the cost is reduced, and the safety of special equipment operation is improved; and the structure is simple, and one oil cylinder can complete the posture change of left and right support legs.

[0067] By the connecting rod structure, the whole rear guardrail structure in the related art is broken, so that the rear guardrail mechanism is changed into a support leg structure, the function of the rear guardrail is expanded without installing a support leg, two purposes of one mechanism are realized, the safety of a small-tonnage multifunctional cleaning vehicle with a lifting platform 50 can be improved without increasing the cost, and the utility model is economical and practical.

[0068] In the description of the utility model, the terms "first" and "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one feature. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0069] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through intermediate medium, can be the communication of two element internals or the interaction of two elements, unless another definite limitation.For ordinary skilled in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances.

[0070] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through intermediate medium, can be the communication of two element internals or the interaction of two elements, unless another definite limitation.For ordinary skilled in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances.

[0071] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0072] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.

Claims

1. A work vehicle characterized by, The utility model relates to a vehicle body (10) is provided with the lifting platform (50), the guardrail assembly (20) is provided with the front end and / or rear end of vehicle body (10), the guardrail assembly (20) has support state and guardrail state, the guardrail assembly (20) supports road surface when support state, and is configured as the crash barrier of vehicle body (10) when guardrail state, drive assembly (30) drives the guardrail assembly (20) between guardrail state and support state conversion, the guardrail assembly (20) includes at least one guardrail, the guardrail is pivotally connected vehicle body (10), and the guardrail has support end and drive end, and drive end is pivotally connected drive assembly (30), and support end supports road surface in support state and is separated from ground in guardrail state, the guardrail assembly (20) includes first guardrail (21) and second guardrail (22), and first guardrail (21) and second guardrail (22) are pivotally connected vehicle body (10), and drive assembly (30) is drivingly connected the drive end of first guardrail (21) and the drive end of second guardrail (22), and drive assembly (30) synchronously drives first guardrail (21) and second guardrail (22), drive assembly (30) includes transmission part (32) and drive part (31) of drive transmission part (32) along up and down direction movement, and transmission part (32) is equipped with first sliding slot (321) and second sliding slot (322), and first sliding slot (321) and second sliding slot (322) extend along left and right directions, and the drive end of first guardrail (21) has first sliding block (211), and the drive end of second guardrail (22) has second sliding block (221), and first sliding block (211) is rotatably and slidably arranged in first sliding slot (321), and second sliding block (221) is rotatably and slidably arranged in second sliding slot (322). In the support state, one of the first guardrail (21) and the second guardrail (22) is inclined in the downward direction away from the other; in the guardrail state, the first guardrail (21) and the second guardrail (22) are configured as strips distributed in the left and right directions. In the support state, the first sliding block (211) and the second sliding block (221) are relatively far apart, and in the guardrail state, the first sliding block (211) and the second sliding block (221) are relatively close. The drive part (31) is pivotally connected to the vehicle body (10); and / or, the drive part (31) is pivotally connected to the transmission part (32). The guardrail assembly (20) includes a guardrail and a support pad, the guardrail has a drive end and a support end, the vehicle body (10) is pivotally connected to the guardrail, and the pivot connection point is located between the drive end and the support end, the drive end is drivingly connected to the drive assembly (30), and the support pad is spherically articulated to the support end. ​ ​ 2. The work vehicle of claim 1, characterized in that, ​ 3. The work vehicle of claim 2, characterized in that, ​ 4. The work vehicle of claim 2, characterized in that, ​ 5. The work vehicle of claim 1, wherein, ​ 6. The work vehicle of claim 1, characterized in that, Further comprising a cantilever assembly (40) extending in up-down direction, an upper end of the cantilever assembly (40) is connected to the vehicle body (10), and a lower end of the cantilever assembly (40) is rotatably connected to the guardrail assembly (20).

7. The work vehicle of claim 1, wherein The guardrail assembly (20) comprises at least one guardrail, the guardrail comprises a first telescopic part (201) and a second telescopic part (202), the second telescopic part (202) is telescopically arranged in the first telescopic part (201), and the first telescopic part (201) is driven to rotate by the driving assembly (30).

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