Aerial work vehicle straight arm type boom telescopic oil cylinder guiding device and action method

Abstract

The application provides a high-altitude operation vehicle straight-arm type boom telescopic oil cylinder guiding device and action method, and relates to the technical field of high-altitude operation vehicles.The high-altitude operation vehicle straight-arm type boom telescopic oil cylinder guiding device and action method of the application, when the first roller rolls from a first-stage boom to another-stage boom, the second roller keeps rolling contact with the cylinder body of the telescopic oil cylinder, the cylinder body of the telescopic oil cylinder swings relative to the second-stage boom through the second hinge, the telescopic rod of the telescopic oil cylinder swings relative to the first-stage boom through the first hinge, the telescopic rod of the telescopic oil cylinder moves along the up and down directions relative to the first-stage boom, the second wheel seat moves along the up and down directions relative to the support seat, and the buffer mechanism buffers the movement of the second wheel seat along the up and down directions relative to the support seat; in this way, the coordinated action of multiple components is used to avoid the telescopic oil cylinder from being subjected to a large impact and from continuously swinging and shaking.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-altitude operation vehicles, in particular to a straight-arm type boom telescopic oil cylinder guiding device and action method of a high-altitude operation vehicle. BACKGROUND

[0002] With the continuous development of technology, various types of engineering vehicles have been widely used in engineering construction, which can greatly improve the work efficiency and work quality of engineering construction. For example, the high-altitude operation vehicle for high-altitude operation construction, which transports workers and equipment to the high-altitude operation area through the working platform. At present, the high-altitude operation vehicle mainly includes vertical lifting type high-altitude operation vehicle, folding arm type high-altitude operation vehicle, self-propelled high-altitude operation platform, telescopic arm (straight arm) type high-altitude operation vehicle and curved arm type high-altitude operation vehicle. Among them, the straight arm type high-altitude operation vehicle drives the working platform at the end of the multi-stage arm through the relative telescoping of the straight arm type boom. The multi-stage arm is generally of a nested structure, and the telescopic oil cylinder is arranged in the arm. The telescoping of the arm is driven by the telescopic oil cylinder and transmitted by the steel wire rope or chain, so as to realize the relative telescoping of the multi-stage arm. During the relative telescoping of the multi-stage arm, the telescopic oil cylinder is lapped on the inner wall of the arm and moves along the multi-stage arm. Since the end of the arm has a certain thickness, and considering the design strength, size and other requirements of the arm, the end of the arm cannot be designed to be too thin, too long and too thin. When the telescopic oil cylinder is lapped from one stage of the arm to another stage of the arm, the telescopic oil cylinder will be subjected to a large impact and continuous swinging and shaking, which will cause the arm to have a jerky feeling during telescoping. In addition, the arm of the high-altitude operation vehicle is generally several tens of meters long, and the telescopic oil cylinder is generally arranged at the lower end of the arm. The continuous swinging and shaking of the telescopic oil cylinder will cause the whole arm to vibrate, and the longer the arm, the more obvious the amplification of the vibration at the bottom. The working platform at the end of the arm will shake obviously, which will affect the accuracy and stability of the operation of the high-altitude operation vehicle and directly affect the quality of the high-altitude operation vehicle. In addition, the telescopic oil cylinder will also be subjected to a large impact and continuous swinging and shaking, which will cause interference between the telescopic rod and the cylinder body of the telescopic oil cylinder, affecting the service life of the telescopic oil cylinder. SUMMARY

[0003] The purpose of the present application is to provide a straight-arm type boom telescopic oil cylinder guiding device and action method of a high-altitude operation vehicle, so as to avoid the telescopic oil cylinder from being subjected to a large impact and continuous swinging and shaking during the relative telescoping of the multi-stage arm.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:

[0005] A straight-arm type boom telescopic oil cylinder guiding device of a high-altitude operation vehicle, comprising at least four stages of arms arranged in a nested structure from outside to inside, and further comprising a telescopic oil cylinder.

[0006] The tail end of the telescopic arm of the telescopic oil cylinder is hinged to the tail end of the first-stage arm frame through a first hinge, the tail end of the telescopic oil cylinder can move along the up-down direction relative to the first-stage arm frame, one end of the cylinder body of the telescopic oil cylinder close to the telescopic arm is hinged to the tail end of the second-stage arm frame through a second hinge, and the other end of the cylinder body of the telescopic oil cylinder away from the telescopic arm is provided with a first wheel seat, and the lower end of the first wheel seat is rotationally connected with a first roller.

[0007] The first roller rolls against the lower inner wall of the third-stage arm frame and the arm frame after the third-stage arm frame.

[0008] The tail end of the third-stage arm frame is provided with a support seat, the support seat is located below the telescopic oil cylinder, the upper end of the support seat is connected with a second wheel seat through a buffering mechanism, the second wheel seat can move along the up-down direction relative to the support seat, the buffering mechanism buffers the movement of the second wheel seat along the up-down direction relative to the support seat, and the upper end of the second wheel seat is rotationally connected with a second roller.

[0009] The second roller rolls against the cylinder body of the telescopic oil cylinder.

[0010] Preferably, the buffering mechanism comprises a first guide limiting column, a spring and a second guide limiting column.

[0011] The upper end of the support seat is provided with a buffering groove and a guide limiting groove, respectively, the opening direction of the buffering groove is arranged along the up-down direction, and the opening direction of the guide limiting groove is arranged along the up-down direction.

[0012] The lower end of the second wheel seat is provided with a guide opening.

[0013] The upper end of the first guide limiting column is provided with a blocking block, the lower end of the first guide limiting column sequentially penetrates through the guide opening and the spring, the blocking block is located at the upper edge position of the guide opening, the lower end of the first guide limiting column is assembled and connected to the support seat, the first guide limiting column is arranged along the up-down direction, the first guide limiting column is located in the buffering groove, the spring is located in the buffering groove, the lower end of the spring is connected to the bottom of the buffering groove, and the upper end of the spring is connected to the lower end of the second wheel seat.

[0014] The lower end of the second wheel seat is provided with the second guide limiting column, the second guide limiting column is arranged along the up-down direction, and the second guide limiting column is slidingly connected in the guide limiting groove.

[0015] Preferably, the lower end of the first guide limiting column is provided with an external thread, the support seat is provided with a first threaded hole below the buffering groove, the lower end of the first guide limiting column is threadedly connected in the first threaded hole, the length of the lower end of the first guide limiting column connected to the first threaded hole is changed to change the height of the first guide limiting column.

[0016] The support base is provided with a second threaded hole below the guide limiting groove, the second threaded hole is through the guide limiting groove, an adjusting screw is assembled into the second threaded hole from below the support base, the adjusting screw can pass through the second threaded hole, the upper end of the adjusting screw is located in the guide limiting groove, the height of the upper end of the adjusting screw exposed from the bottom of the guide limiting groove is changed by changing the position of the adjusting screw connected to the second threaded hole.

[0017] Preferably, the lower end of the first guide limiting column is threadedly connected with a locking nut.

[0018] Preferably, the tail end of the fourth stage arm support and the arm support after the fourth stage are provided with a sliding block, the sliding block is provided with an inclined surface, and the inclined surface is connected to the lower inner wall of the adjacent arm support.

[0019] Preferably, the first hinge includes a hinge shaft assembled on the first stage arm support and a hinge hole provided at the end of the telescopic rod of the telescopic oil cylinder, the hinge hole is provided as a long hole extending in the up-down direction.

[0020] Preferably, the left end and the right end of the first wheel seat are rotatably connected with third rollers, the third rollers rollingly contact the left and right inner walls of the third stage arm support and the arm support after the third stage.

[0021] Preferably, the outer end of the first wheel seat is provided with a tapered guide.

[0022] Preferably, the cylinder body of the telescopic oil cylinder is a cylinder, and the circumferential side profile of the second roller is provided as an arc shape with high in the middle and low at both ends matched with the cylinder body of the telescopic oil cylinder.

[0023] A straight arm type arm support telescopic oil cylinder guiding action method is provided for the above-mentioned high-altitude working vehicle straight arm type arm support telescopic oil cylinder guiding device, and the action process is as follows:

[0024] 1. Arm support extension

[0025] The telescopic rod of the telescopic oil cylinder extends relative to the cylinder body, the second stage arm support extends outward relative to the first stage arm support, at the same time, the second stage arm support extends outward relative to the first stage arm support to drive the third stage arm support and the arm support after the third stage to extend outward, and the first roller rolls along the lower inner walls of the last stage arm support to the third stage arm support in sequence.

[0026] When the first roller rolls from the first stage arm support to another stage arm support, the second roller keeps rolling contact with the cylinder body of the telescopic oil cylinder, the cylinder body of the telescopic oil cylinder swings relative to the second stage arm support through the second hinge, the telescopic rod of the telescopic oil cylinder swings relative to the first stage arm support through the first hinge, the telescopic rod of the telescopic oil cylinder moves along the up-down direction relative to the first stage arm support, the second wheel seat moves along the up-down direction relative to the support seat, and the buffer mechanism buffers the movement of the second wheel seat along the up-down direction relative to the support seat.

[0027] 2. Arm support retraction

[0028] The telescopic rod of the telescopic oil cylinder retracts relative to the cylinder body, and the second stage arm support retracts inward relative to the first stage arm support, and meanwhile, the second stage arm support retracts inward relative to the first stage arm support to drive the third stage and the arm supports after the third stage to retract inward, and the first roller rolls along the inner wall below the third stage arm support to the last stage arm support in sequence.

[0029] When the first roller rolls from the first stage arm support to another stage arm support, the second roller keeps rolling contact with the cylinder body of the telescopic oil cylinder, the cylinder body of the telescopic oil cylinder swings relative to the second stage arm support through the second hinge, the telescopic rod of the telescopic oil cylinder swings relative to the first stage arm support through the first hinge, the telescopic rod of the telescopic oil cylinder moves along the up-down direction relative to the first stage arm support, the second wheel seat moves along the up-down direction relative to the support seat, and the buffer mechanism buffers the movement of the second wheel seat along the up-down direction relative to the support seat.

[0030] The beneficial technical effects of the present application are:

[0031] The telescopic rod of the telescopic oil cylinder extends or retracts relative to the cylinder body to drive the second stage arm support to extend outward or retract inward relative to the first stage arm support, and meanwhile, the transmission through the steel wire rope or chain drives the third stage and the arm supports after the third stage to extend outward or retract inward, and the first roller rolls along the inner wall below the third stage arm support to the last stage arm support; when the first roller rolls from the first stage arm support to another stage arm support, the second roller keeps rolling contact with the cylinder body of the telescopic oil cylinder, the cylinder body of the telescopic oil cylinder swings relative to the second stage arm support through the second hinge, the telescopic rod of the telescopic oil cylinder swings relative to the first stage arm support through the first hinge, the telescopic rod of the telescopic oil cylinder moves along the up-down direction relative to the first stage arm support, the second wheel seat moves along the up-down direction relative to the support seat, and the buffer mechanism buffers the movement of the second wheel seat along the up-down direction relative to the support seat; in this way, the coordinated action of multiple components avoids large impact on the telescopic oil cylinder and avoids continuous swinging and shaking. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a top view of the telescopic oil cylinder guiding device of the embodiment of the present application.

[0033] Figure 2 is Figure 1 A-A sectional view in the middle;

[0034] Figure 3 is the left view of the telescopic oil cylinder guide device of the straight arm type boom of the aerial work platform vehicle of the embodiment of the present application;

[0035] Figure 4 is the right view of the telescopic oil cylinder guide device of the straight arm type boom of the aerial work platform vehicle of the embodiment of the present application;

[0036] Figure 5 is the front view of the telescopic oil cylinder, the first roller and the second roller etc. in the telescopic oil cylinder guide device of the straight arm type boom of the aerial work platform vehicle of the embodiment of the present application;

[0037] Figure 6 is the top view of the telescopic oil cylinder, the first roller and the second roller etc. in the telescopic oil cylinder guide device of the straight arm type boom of the aerial work platform vehicle of the embodiment of the present application;

[0038] Figure 7 is the left view of the telescopic oil cylinder, the first roller and the second roller etc. in the telescopic oil cylinder guide device of the straight arm type boom of the aerial work platform vehicle of the embodiment of the present application;

[0039] Figure 8 is the right view of the telescopic oil cylinder, the first roller and the second roller etc. in the telescopic oil cylinder guide device of the straight arm type boom of the aerial work platform vehicle of the embodiment of the present application;

[0040] Figure 9 is the perspective view of the support seat, the second wheel seat and the second roller etc. in the telescopic oil cylinder guide device of the straight arm type boom of the aerial work platform vehicle of the embodiment of the present application;

[0041] Figure 10 is the front view of the support seat, the second wheel seat and the second roller etc. in the telescopic oil cylinder guide device of the straight arm type boom of the aerial work platform vehicle of the embodiment of the present application;

[0042] Figure 11 is the left view of the support seat, the second wheel seat and the second roller etc. in the telescopic oil cylinder guide device of the straight arm type boom of the aerial work platform vehicle of the embodiment of the present application;

[0043] Figure 12 is Figure 11 B-B sectional view in the middle;

[0044] Figure 13 is the top view of the support seat, the second wheel seat and the second roller etc. in the telescopic oil cylinder guide device of the straight arm type boom of the aerial work platform vehicle of the embodiment of the present application;

[0045] Figure 14A perspective view of the first wheel seat, the first roller and the third roller in the straight-arm-boom telescopic oil cylinder guiding device of the aerial work platform vehicle according to the embodiment of the present application is shown in the figure.

[0046] Figure 15 A front view of the first wheel seat, the first roller and the third roller in the straight-arm-boom telescopic oil cylinder guiding device of the aerial work platform vehicle according to the embodiment of the present application is shown in the figure.

[0047] Figure 16 A right view of the first wheel seat, the first roller and the third roller in the straight-arm-boom telescopic oil cylinder guiding device of the aerial work platform vehicle according to the embodiment of the present application is shown in the figure.

[0048] Figure 17 A top view of the first wheel seat, the first roller and the third roller in the straight-arm-boom telescopic oil cylinder guiding device of the aerial work platform vehicle according to the embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0049] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the specific embodiments and the accompanying drawings. Some but not all of the embodiments of the present application will be shown in the drawings. In fact, various embodiments of the present application can be implemented in many different forms, and should not be interpreted as being limited to the embodiments described herein; on the contrary, these embodiments are provided to meet the applicable legal requirements.

[0050] In the description of the present application, it should be noted that the terms "inner", "outer", "upper", "lower", "front", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0051] In the embodiment of the present application, a straight-arm-boom telescopic oil cylinder guiding device and action method of an aerial work platform vehicle are provided, as shown in the figure. Figures 1 to 17

[0052] A straight-arm-boom telescopic oil cylinder guiding device of an aerial work platform vehicle comprises seven-stage booms arranged in sequence from outside to inside, and further comprises a telescopic oil cylinder 1, wherein the seven-stage booms are specifically a first-stage boom 21, a second-stage boom 22, a third-stage boom 23, a fourth-stage boom 24, a fifth-stage boom 25, a sixth-stage boom 26 and a seventh-stage boom 27.

[0053] ​The telescopic rod 11 of the telescopic oil cylinder 1 is hingedly connected to the tail end of the first-stage arm support 21 through a first hinge (hinge shaft 311 and hinge hole 312), and the telescopic rod 11 of the telescopic oil cylinder 1 can move relative to the first-stage arm support 21 in the up-down direction. The cylinder body 12 of the telescopic oil cylinder 1 is hingedly connected to the tail end of the second-stage arm support 22 through a second hinge 32, and the end of the cylinder body 12 away from the telescopic rod 11 is provided with a first wheel seat 41. The lower end of the first wheel seat 41 is rotatably connected to a first roller 431 through a bearing.

[0054] The first roller 431 rolls against the inner walls below the third-stage arm support 23, the fourth-stage arm support 24, the fifth-stage arm support 25, the sixth-stage arm support 26 and the seventh-stage arm support 27.

[0055] The left and right ends of the first wheel seat 41 are rotatably connected to third rollers 433, and the third rollers 433 roll against the left and right inner walls of the third-stage arm support 23, the fourth-stage arm support 24, the fifth-stage arm support 25, the sixth-stage arm support 26 and the seventh-stage arm support 27. In this way, the left and right inner walls of the third-stage arm support 23, the fourth-stage arm support 24, the fifth-stage arm support 25, the sixth-stage arm support 26 and the seventh-stage arm support 27 are avoided from being bumped by the first wheel seat 41.

[0056] In addition, the outer end of the first wheel seat 41 is provided with a guide 411 with a narrowed end, and the guide 411 in this embodiment has a triangular structure. In this way, the inner walls of the third-stage arm support 23, the fourth-stage arm support 24, the fifth-stage arm support 25, the sixth-stage arm support 26 and the seventh-stage arm support 27 are contacted by the guide 411 in special cases to guide the first wheel seat 41.

[0057] The first hinge includes a hinge shaft 311 and a hinge hole 312. The hinge shaft 311 is fitted to the tail end of the first-stage arm support 21, and the hinge hole 312 is formed in the end of the telescopic rod 11 of the telescopic oil cylinder 1. The hinge hole 312 is a long slot extending in the up-down direction. When the first roller 431 rolls from one stage of the arm support to another stage of the arm support, the cylinder body 12 of the telescopic oil cylinder 1 will swing relative to the second-stage arm support 22 through the second hinge 32, and the telescopic rod 11 of the telescopic oil cylinder 1 will also swing relative to the first-stage arm support 21 through the first hinge. By setting the hinge hole 312 as a long slot extending in the up-down direction, the telescopic rod 11 of the telescopic oil cylinder 1 can move relative to the first-stage arm support 21 in the up-down direction while swinging. In this way, the telescopic rod 11 of the telescopic oil cylinder 1 is avoided from being bent in the radial direction relative to the cylinder body 12.

[0058] The tail end inner wall of the third-stage arm support 23 is provided with a support seat 421, which is below the telescopic oil cylinder 1. The upper side of the support seat 421 is connected with a second wheel seat 422 through a buffer mechanism. The second wheel seat 422 can move along the up-down direction relative to the support seat 421. The buffer mechanism buffers the movement of the second wheel seat 422 along the up-down direction relative to the support seat 421. The upper end of the second wheel seat 422 is rotationally connected with a second roller 432 through a bearing.

[0059] The second roller 432 rolls in contact with the cylinder body 12 of the telescopic oil cylinder 1. The cylinder body 12 of the telescopic oil cylinder 1 is a cylinder. The circumferential side profile of the second roller 432 is arc-shaped with a high middle and low ends, so that the circumferential side of the second roller 432 cooperates with the cylinder body 12 of the telescopic oil cylinder 1. In this way, the guidance of the second roller 432 along the cylinder body 12 is realized through the shape profile of the cylinder body 12 itself and the arc-shaped shape profile of the circumferential side of the second roller 432.

[0060] The buffer mechanism includes a first guide limiting column 51, a spring 52, and a second guide limiting column 53.

[0061] The upper end of the support seat 421 is provided with a buffer groove 54 and a guide limiting groove 55. The opening direction of the buffer groove 54 is arranged along the up-down direction. The opening direction of the guide limiting groove 55 is arranged along the up-down direction.

[0062] The lower end of the second wheel seat 422 is provided with a guide opening 56.

[0063] The upper end of the first guide limiting column 51 is provided with a blocking block 511. The lower end of the first guide limiting column 51 sequentially passes through the guide opening 56 and the spring 52. The blocking block 511 is located at the upper side edge position of the guide opening 56. The lower end of the first guide limiting column 51 is assembled and connected with the support seat 421. The first guide limiting column 51 is arranged along the up-down direction. The first guide limiting column 51 is located inside the buffer groove 54. The spring 52 is located inside the buffer groove 54. The lower end of the spring 52 is connected with the bottom of the buffer groove 54. The upper end of the spring 52 is connected with the lower end of the second wheel seat 422.

[0064] The lower end of the second wheel seat 422 is provided with the second guide limiting column 53. The second guide limiting column 53 is arranged along the up-down direction. The second guide limiting column 53 is slidingly connected in the guide limiting groove 55.

[0065] The second wheel seat 422 can move up and down along the first guide limiting column 51 through the guide hole 56, and can also move up and down along the guide limiting slot 55 through the second guide limiting column 53, so that the second wheel seat 422 moves up and down relative to the support seat 421. Wherein, the upward movement of the second wheel seat 422 is blocked by the blocking block 511, and the blocking block 511 limits the limit position of the upward movement of the second wheel seat 422, and the second guide limiting column 53 moves downward, and the end of the second guide limiting column 53 is blocked by the bottom of the guide limiting slot 55, and the guide limiting slot 55 limits the limit position of the downward movement of the second wheel seat 422.

[0066] During the movement of the second wheel seat 422 relative to the support seat 421 along the up and down direction, the spring 52 elastically supports and buffers the second wheel seat 422. In this way, when the telescopic oil cylinder 1 swings upward or downward, the second wheel seat 422 drives the second roller 432 to keep in contact with the cylinder body 12 of the telescopic oil cylinder 1 under the action of the spring 52, which can avoid the rigid contact of the second roller 432 with the cylinder body 12 and also can avoid the disengagement of the second roller 432 from the cylinder body 12.

[0067] One guide limiting slot 55 is arranged on each side of the buffer slot 54, and each guide limiting slot 55 cooperates with one second guide limiting column 53. In this way, the movement of the second wheel seat 422 relative to the support seat 421 along the up and down direction is more stable, and the second wheel seat 422 is prevented from being skewed to one side.

[0068] The lower end of the first guide limiting column 51 is provided with external threads, the support seat 421 is provided with a first threaded hole 571 below the buffer slot 54, and the lower end of the first guide limiting column 51 is threadedly connected in the first threaded hole 571. The length of the lower end of the first guide limiting column 51 connected to the first threaded hole 571 is changed to change the height of the first guide limiting column 51. In this way, the height of the blocking block 511 is adjusted to adjust the limit position of the upward movement of the second wheel seat 422. In addition, a locking nut 59 is threadedly connected to the lower end of the first guide limiting column 51 to fix the adjusted position of the first guide limiting column 51.

[0069] The support seat 421 is provided with a second threaded hole 572 below the guide limiting slot 55, the second threaded hole 572 penetrates the guide limiting slot 55, the adjusting screw 58 is assembled into the second threaded hole 572 from below the support seat 421, the adjusting screw 58 can penetrate the second threaded hole 572, and the upper end of the adjusting screw 58 is located in the guide limiting slot 55. The position of the adjusting screw 58 connected to the second threaded hole 572 is changed to change the height of the upper end of the adjusting screw 58 exposed from the bottom of the guide limiting slot 55. In this way, the limit position of the downward movement of the second wheel seat 422 is adjusted.

[0070] The tail end of the fourth-stage arm frame 24, the fifth-stage arm frame 25, the sixth-stage arm frame 26 and the seventh-stage arm frame 27 is provided with a sliding block 6, and the sliding block 6 at the tail end of the fourth-stage arm frame 24, the fifth-stage arm frame 25, the sixth-stage arm frame 26 and the seventh-stage arm frame 27 is provided with an inclined surface, which is connected to the lower inner wall of the adjacent arm frame. Specifically, the inclined surface on the sliding block 6 at the tail end of the fourth-stage arm frame 24 is connected to the lower inner wall of the third-stage arm frame 23 and the lower inner wall of the fourth-stage arm frame 24, the inclined surface on the sliding block 6 at the tail end of the fifth-stage arm frame 25 is connected to the lower inner wall of the fourth-stage arm frame 24 and the lower inner wall of the fifth-stage arm frame 25, the inclined surface on the sliding block 6 at the tail end of the sixth-stage arm frame 26 is connected to the lower inner wall of the fifth-stage arm frame 25 and the lower inner wall of the sixth-stage arm frame 26. The inclined surface on the sliding block 6 at the tail end of the seventh-stage arm frame 27 is connected to the lower inner wall of the sixth-stage arm frame 26 and the lower inner wall of the seventh-stage arm frame 27. In this way, when the first roller 431 rolls and contacts the lower inner walls of the third-stage arm frame 23, the fourth-stage arm frame 24, the fifth-stage arm frame 25, the sixth-stage arm frame 26 and the seventh-stage arm frame 27, the first roller 431 can move along the inclined surface on the sliding block 6 between the lower inner walls of the adjacent arm frames. The first roller 431 is prevented from directly falling or rising between the lower inner walls of the adjacent arm frames, thereby avoiding the violent vibration of the telescopic oil cylinder 1. It should be noted that even if the tail end of the fourth-stage arm frame 24, the fifth-stage arm frame 25, the sixth-stage arm frame 26 and the seventh-stage arm frame 27 is provided with the sliding block 6 and the inclined surface on the sliding block 6, the telescopic oil cylinder 1 will still swing and shake.

[0071] The slider 6 at the tail end of the fourth-stage arm support 24 is also located between the fourth-stage arm support 24 and the third-stage arm support 23, the slider 6 at the tail end of the fifth-stage arm support 25 is also located between the fifth-stage arm support 25 and the fourth-stage arm support 24, the slider 6 at the tail end of the sixth-stage arm support 26 is also located between the sixth-stage arm support 26 and the fifth-stage arm support 25, and the slider 6 at the tail end of the seventh-stage arm support 27 is also located between the seventh-stage arm support 27 and the sixth-stage arm support 26. Correspondingly, the sixth-stage arm support 26 is provided with a slider 6 at the head end, the slider 6 at the head end of the sixth-stage arm support 26 is located between the seventh-stage arm support 27 and the sixth-stage arm support 26, the fifth-stage arm support 25 is provided with a slider 6 at the head end, the slider 6 at the head end of the fifth-stage arm support 25 is located between the sixth-stage arm support 26 and the fifth-stage arm support 25, and the fourth-stage arm support 24 is provided with a slider 6 at the head end, the slider 6 at the head end of the fourth-stage arm support 24 is located between the fifth-stage arm support 25 and the fourth-stage arm support 24. In addition, the third-stage arm support 23 is provided with a slider 6 at the tail end, the slider 6 at the tail end of the third-stage arm support 23 is located between the third-stage arm support 23 and the second-stage arm support 22, the third-stage arm support 23 is provided with a slider 6 at the head end, the slider 6 at the head end of the third-stage arm support 23 is located between the fourth-stage arm support 24 and the third-stage arm support 23, the second-stage arm support 22 is provided with a slider 6 at the tail end, the slider 6 at the tail end of the second-stage arm support 22 is located between the second-stage arm support 22 and the first-stage arm support 21, the second-stage arm support 22 is provided with a slider 6 at the head end, the slider 6 at the head end of the second-stage arm support 22 is located between the third-stage arm support 23 and the second-stage arm support 22, and the first-stage arm support 22 is provided with a slider 6 at the head end, the slider 6 at the head end of the first-stage arm support 22 is located between the second-stage arm support 22 and the first-stage arm support 22. In this way, the support and sliding fit between the adjacent arm supports are realized through the slider 6. The slider 6 can be made of nylon material, and the slider 6 can be replaced when it is seriously worn, so as to avoid wear between the adjacent arm supports.

[0072] A straight-arm type arm support telescopic oil cylinder guiding action method is provided for the straight-arm type arm support telescopic oil cylinder guiding device of the aerial work vehicle described above in the embodiment, and the action process is as follows:

[0073] 1. Arm support extension

[0074] The telescopic rod 11 of the telescopic oil cylinder 1 extends relative to the cylinder body 12, the second-stage arm support 22 extends outward relative to the first-stage arm support 21, and at the same time, the second-stage arm support 22 extends outward relative to the first-stage arm support 21 to drive the third-stage and the arm supports after the third-stage to extend outward, and the first roller 431 rolls along the lower inner wall of the last-stage arm support (the seventh-stage arm support 27) to the third-stage arm support 23 in sequence;

[0075] When the first roller 431 rolls from one stage of the arm support to another stage, the second roller 432 keeps rolling in contact with the cylinder 12 of the telescopic oil cylinder 1, the cylinder 12 of the telescopic oil cylinder 1 swings (first swings downward and then continuously swings up and down) relative to the second stage of the arm support 22 through the second hinge 32, the telescopic rod 11 of the telescopic oil cylinder 1 swings relative to the first stage of the arm support 21 through the first hinge, the telescopic rod 11 of the telescopic oil cylinder 1 moves along the up and down direction relative to the first stage of the arm support 21, the second wheel seat 422 moves along the up and down direction relative to the support seat 421, and the buffer mechanism buffers the movement of the second wheel seat 422 relative to the support seat 421 along the up and down direction.

[0076] 2. Arm support retraction

[0077] The telescopic rod 11 of the telescopic oil cylinder 1 retracts relative to the cylinder 12, and the second stage of the arm support 22 retracts inward relative to the first stage of the arm support 21, at the same time, the second stage of the arm support 22 retracts inward relative to the first stage of the arm support 21 to drive the third stage and the arm supports after the third stage to retract inward, and the first roller 431 successively rolls along the lower inner wall of the third stage of the arm support 23 to the last stage of the arm support (the seventh stage of the arm support 27).

[0078] When the first roller 431 rolls from one stage of the arm support to another stage, the second roller 432 keeps rolling in contact with the cylinder 12 of the telescopic oil cylinder 1, the cylinder 12 of the telescopic oil cylinder 1 swings (first swings upward and then continuously swings up and down) relative to the second stage of the arm support 22 through the second hinge 32, the telescopic rod 11 of the telescopic oil cylinder 1 swings relative to the first stage of the arm support 21 through the first hinge, the telescopic rod 11 of the telescopic oil cylinder 1 moves along the up and down direction relative to the first stage of the arm support 21, the second wheel seat 422 moves along the up and down direction relative to the support seat 421, and the buffer mechanism buffers the movement of the second wheel seat 422 relative to the support seat 421 along the up and down direction.

[0079] During the extension and retraction of the arm support, the first hinge (hinge shaft 311 and hinge hole 312), the second hinge 32, the first roller 431, the second roller 432, the buffer mechanism, and the like cooperate with the telescopic oil cylinder 1 and the arm supports to avoid large impact on the telescopic oil cylinder 1 and continuous swinging and shaking.

[0080] So far, the embodiment has been described in detail in combination with the drawings. According to the above description, those skilled in the art should have a clear understanding of the high-altitude operation vehicle straight-arm type boom telescopic oil cylinder guiding device. The high-altitude operation vehicle straight-arm type boom telescopic oil cylinder guiding device and the action method, the telescopic rod 11 of the telescopic oil cylinder 1 extends or retracts relative to the cylinder body 12 to drive the second-stage boom 22 to extend outward or retract inward relative to the first-stage boom 21, at the same time, the third-stage and the third-stage after boom are driven to extend outward or retract inward through the transmission of the steel wire rope or chain, the first roller 431 rolls along the inner wall below the third-stage boom 23 to the last-stage boom; when the first roller 431 rolls from the first-stage boom to another-stage boom, the second roller 432 keeps rolling contact with the cylinder body 12 of the telescopic oil cylinder 1, the cylinder body 12 of the telescopic oil cylinder 1 swings relative to the second-stage boom 22 through the second hinge 32, the telescopic rod 11 of the telescopic oil cylinder 1 swings relative to the first-stage boom 21 through the first hinge, the telescopic rod 11 of the telescopic oil cylinder 1 moves along the up and down directions relative to the first-stage boom 21, the second wheel seat 422 moves along the up and down directions relative to the support seat 421, and the buffer mechanism buffers the movement of the second wheel seat 422 relative to the support seat 421 along the up and down directions; in this way, through the coordinated action of multiple components, the telescopic oil cylinder 1 is prevented from being subjected to a larger impact and from continuous swinging and shaking.

[0081] The above-described specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application, and it should be understood that the above-described specific embodiments are only for the specific embodiments of the present application and are not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-altitude operation vehicle straight-arm type boom telescopic oil cylinder guiding device, characterized in that: It includes at least four levels of boom arranged in a nested manner from the outside in, and also includes telescopic cylinders; The telescopic rod end of the telescopic cylinder is hinged to the tail end of the first-stage boom via a first hinge. The first hinge includes a hinge shaft mounted on the first-stage boom and a hinge hole opened at the end of the telescopic rod of the telescopic cylinder. The hinge hole is configured as an elongated hole extending in the up and down direction. The telescopic rod end of the telescopic cylinder can move relative to the first-stage boom in the up and down direction. The cylinder body of the telescopic cylinder is hinged to the tail end of the second-stage boom via a second hinge at one end near the telescopic rod. A first wheel seat is provided at the end of the cylinder body of the telescopic cylinder away from the telescopic rod. A first roller is rotatably connected to the lower end of the first wheel seat. The first roller rolls into contact with the lower inner wall of the third stage and the boom after the third stage; The inner wall of the tail end of the third-stage boom is provided with a support seat, which is located below the telescopic cylinder. A second wheel seat is connected above the support seat via a buffer mechanism. The second wheel seat can move relative to the support seat in the up and down direction. The buffer mechanism buffers the movement of the second wheel seat relative to the support seat in the up and down direction. A second roller is rotatably connected to the upper end of the second wheel seat. The buffer mechanism includes a first guide limiting post, a spring, and a second guide limiting post; The upper end of the support base is provided with a buffer groove and a guide limiting groove, the opening direction of the buffer groove is arranged along the upper and lower directions, and the opening direction of the guide limiting groove is arranged along the upper and lower directions. A guide opening is provided at the lower end of the second wheel seat; The upper end of the first guide limiting post is provided with a blocking block, and the lower end of the first guide limiting post passes through the guide opening and the spring in sequence. The blocking block is located at the upper edge of the guide opening. The lower end of the first guide limiting post is assembled and connected to the support base. The first guide limiting post is arranged in the up and down direction. The first guide limiting post is located inside the buffer groove. The spring is located inside the buffer groove. The lower end of the spring is connected to the bottom of the buffer groove. The upper end of the spring is connected to the lower end of the second wheel seat. The lower end of the second wheel seat is provided with the second guide limiting post, which is arranged along the upper and lower directions and is slidably connected in the guide limiting groove. The second roller rolls into contact with the cylinder body of the telescopic hydraulic cylinder.

2. The aerial work platform boom telescopic cylinder guide device according to claim 1, characterized in that: The lower end of the first guide limiting post is provided with an external thread, and the support seat has a first threaded hole below the buffer groove. The lower end of the first guide limiting post is threaded into the first threaded hole. Changing the length of the lower end of the first guide limiting post connected to the first threaded hole can change the height of the first guide limiting post. The support seat is provided with a second threaded hole below the guide limiting groove, the second threaded hole is through the guide limiting groove, the adjusting screw is assembled into the second threaded hole from below the support seat, the adjusting screw can pass through the second threaded hole, the upper end of the adjusting screw is located in the guide limiting groove, the position of the adjusting screw connected to the second threaded hole is changed to change the height of the upper end of the adjusting screw exposed from the bottom of the guide limiting groove.

3. The straight-boom telescopic oil cylinder guiding device of the overhead working truck according to claim 2, characterized in that: The lower end of the first guide limiting column is threadedly connected with a locking nut.

4. The straight arm type boom telescopic oil cylinder guiding device of the overhead working truck according to claim 1, characterized in that: The tail end of the fourth stage arm support and the arm support after the fourth stage are provided with sliding blocks, the sliding blocks are provided with inclined surfaces, and the inclined surfaces are connected to the lower inner walls of the adjacent arm supports.

5. The straight arm type boom telescopic oil cylinder guiding device of the overhead working truck according to claim 1, characterized in that: The left end and the right end of the first wheel seat are rotatably connected with third rollers, and the third rollers rollingly contact the left and right inner walls of the third stage and the arm support after the third stage.

6. The straight arm type boom telescopic oil cylinder guiding device of the overhead working truck according to claim 1, characterized in that: The outer end of the first wheel seat is provided with a guide member with a narrowed tail end.

7. The straight-boom telescopic oil cylinder guiding device of the overhead working truck according to claim 1, characterized in that: The cylinder body of the telescopic oil cylinder is a cylinder, and the circumferential side profile of the second roller is an arc with a high middle and low ends matched with the cylinder body of the telescopic oil cylinder.

8. A method for guiding the telescopic boom cylinder of a straight-arm type aerial platform vehicle, the telescopic boom cylinder guiding device of the straight-arm type aerial platform vehicle according to any one of claims 1 to 7, characterized in that, The action process is as follows:

1. The arm support is extended The telescopic rod of the telescopic oil cylinder is extended relative to the cylinder body, the second stage arm support is extended outward relative to the first stage arm support, at the same time, the second stage arm support is extended outward relative to the first stage arm support to drive the third stage and the arm support after the third stage to extend outward, and the first roller rolls along the lower inner walls of the last stage arm support to the third stage arm support in sequence; When the first roller rolls from the first stage arm support to another stage arm support, the second roller keeps rolling contact with the cylinder body of the telescopic oil cylinder, the cylinder body of the telescopic oil cylinder swings relative to the second stage arm support through the second hinge, the telescopic rod of the telescopic oil cylinder swings relative to the first stage arm support through the first hinge, the telescopic rod of the telescopic oil cylinder moves along the up-down direction relative to the first stage arm support, the second wheel seat moves along the up-down direction relative to the support seat, and the buffer mechanism buffers the movement of the second wheel seat relative to the support seat along the up-down direction; 2. The arm support is retracted The telescopic rod of the telescopic oil cylinder is retracted relative to the cylinder body, the second stage arm support is retracted inward relative to the first stage arm support, at the same time, the second stage arm support is retracted inward relative to the first stage arm support to drive the third stage and the arm support after the third stage to retract inward, and the first roller rolls along the lower inner walls of the third stage arm support to the last stage arm support in sequence; When the first roller rolls from the first stage arm support to another stage arm support, the second roller keeps rolling contact with the cylinder body of the telescopic oil cylinder, the cylinder body of the telescopic oil cylinder swings relative to the second stage arm support through the second hinge, the telescopic rod of the telescopic oil cylinder swings relative to the first stage arm support through the first hinge, the telescopic rod of the telescopic oil cylinder moves along the up-down direction relative to the first stage arm support, the second wheel seat moves along the up-down direction relative to the support seat, and the buffer mechanism buffers the movement of the second wheel seat relative to the support seat along the up-down direction.

Images