CN219217472U

CN219217472U - Aerial work platform lightweight fly jib and aerial work platform

Info

Publication number: CN219217472U
Application number: CN202320706925.2U
Authority: CN
Inventors: 左志永; 王德红; 赵忠立; 杨振宁; 苏超飞
Original assignee: Lingong Heavy Machinery Co Ltd
Current assignee: Lingong Heavy Machinery Co Ltd
Priority date: 2023-04-03
Filing date: 2023-04-03
Publication date: 2023-06-20
Anticipated expiration: 2033-04-03

Abstract

The utility model belongs to the technical field of aerial platforms, and discloses a lightweight fly arm of an aerial work platform and the aerial work platform. The lightweight fly jib of the aerial working platform comprises an upper connecting rod, a lower connecting rod, a first bracket, a second bracket and an amplitude variation oil cylinder. The upper connecting rod and the lower connecting rod are arranged in parallel, the first support is hinged to one end of the upper connecting rod and one end of the lower connecting rod, which are located on the same side, the second support is hinged to the other end of the upper connecting rod and the other end of the lower connecting rod, the upper connecting rod, the lower connecting rod, the first support and the second support form a parallelogram structure, the luffing cylinder is arranged between the upper connecting rod and the lower connecting rod, one end of the upper connecting rod, which is hinged to the first support, is hinged to the telescopic arm, and the second support is connected with the operating platform through the swing cylinder. The upper connecting rod comprises a first bending plate and a second bending plate, the first bending plate and the second bending plate are mutually buckled and welded, and the plate thickness of the first bending plate is larger than that of the second bending plate, so that the light weight design of the light weight fly jib of the aerial working platform is realized.

Description

Aerial work platform lightweight fly jib and aerial work platform

Technical Field

The utility model relates to the technical field of aerial work platforms, in particular to a lightweight fly arm of an aerial work platform and the aerial work platform.

Background

With the technical development of the boom type aerial work platform industry, the design of lightweight products and the operation comfort become more and more the technical development direction of the aerial work platform.

The cost of raw materials of the product is continuously increased, and along with the development trend of engineering machinery dynamoelectric, the lightweight design is increasingly prominent in the product development process. The fly arm structure is arranged at the tail end of the arm support structure of the arm type aerial working platform and plays a role in connecting the telescopic arm and the platform. Because the position is positioned at the tail end of the telescopic frame, when the telescopic arm stretches, the weight of the fly arm structure seriously affects the stability of the whole machine, and plays an important role in designing the weight of the whole machine. Therefore, the fly arm structure with the light weight design is an important content of the light weight design of the existing aerial working platform, and the weight reduction of the fly arm structure plays a vital role in the weight of the whole aerial working platform.

The upper connecting rod of the fly arm structure in the prior art is of an integral structure, which is not beneficial to realizing the lightweight design of the fly arm structure.

Disclosure of Invention

The utility model aims to provide a lightweight fly jib of an aerial work platform and the aerial work platform, wherein an upper connecting rod is provided with a first bending plate and a second bending plate which are mutually buckled and welded, and the thicknesses of the first bending plate and the second bending plate are different, so that the lightweight design is realized.

To achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an aerial working platform lightweight fly jib, includes connecting rod, lower connecting rod, first support, second support and change width of cloth hydro-cylinder, the connecting rod with the mutual parallel arrangement of lower connecting rod, first support articulates the connecting rod with the one end that lower connecting rod is located the homonymy down, the second support articulates the connecting rod with the other end that lower connecting rod is located the homonymy down, change width of cloth hydro-cylinder set up in between the connecting rod with the lower connecting rod, the connecting rod with the articulated one end of first support articulates in the flexible arm, the operation platform is connected to the second support, the connecting rod includes first bent plate and second bent plate, first bent plate with the mutual lock welding of second bent plate, just first bent plate with in the second bent plate, be close to change width of cloth hydro-cylinder's plate is greater than keeping away from change width of cloth hydro-cylinder's another plate.

As an alternative, the upper link further includes two first ear plates, the two first ear plates are symmetrically and fixedly disposed on two side surfaces of the upper link, the first ear plates and the second ear plates are fixedly connected with the first bending plate and the second bending plate at the same time, and the two first ear plates are hinged between the two end plates of the telescopic arm through pin shafts.

As an alternative, a shaft sleeve is arranged between the two first ear plates, and the pin shaft is arranged in the shaft sleeve in a penetrating manner.

As an alternative scheme, go up the connecting rod still including first shrouding, second shrouding and third shrouding, first shrouding set up in two between the first otic placode and be located two the upper end of first otic placode, just first shrouding deviate from the one end of flexible arm with the second is folded the bent plate and is connected, the second shrouding with the third shrouding is sealed respectively go up the connecting rod along its length direction's both ends.

As an alternative scheme, still include proximity switch sensor, proximity switch sensor set up in on the flexible arm, when last connecting rod rotates to the settlement position, proximity switch sensor can be triggered, and then control the flexible speed of luffing cylinder.

As an alternative, the proximity switch sensor is arranged on the telescopic arm through a sleeve, an internal thread is arranged on the inner surface of the sleeve, and the proximity switch sensor is in threaded connection with the sleeve.

As an alternative, the proximity switch sensor is further provided with a nut, and when the proximity switch sensor is screwed to the sleeve, the nut can be screwed to the proximity switch sensor and fix the position of the proximity switch sensor relative to the sleeve.

As an alternative, two proximity switch sensors are provided, and the two proximity switch sensors are symmetrically arranged on the two end plates of the telescopic arm.

As an alternative scheme, the amplitude variation oil cylinder is controlled by a proportional electromagnetic valve, and after the proximity switch sensor is triggered, the expansion speed of the amplitude variation oil cylinder is realized by controlling the opening of the proportional electromagnetic valve.

The aerial work platform comprises the aerial work platform lightweight fly arm in any scheme.

The utility model has the beneficial effects that:

according to the lightweight fly arm for the aerial working platform, the first bending plate and the second bending plate are mutually buckled and welded to form the integral upper connecting rod, and the first bending plate and the second bending plate with different plate thicknesses are selected, so that the bearing capacity is met, and meanwhile, the weight of the upper connecting rod is reduced. This aerial working platform lightweight fly jib is through the first bent plate and the second bent plate welding of components of a whole that can function independently and plate thickness difference become the connecting rod, has realized the lightweight design of aerial working platform lightweight fly jib, and can satisfy the requirement of bearing simultaneously, structural design is reasonable.

Drawings

FIG. 1 is a schematic illustration I of a lightweight fly jib for an aerial work platform according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram II of a lightweight fly jib for an aerial work platform according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the structure of an upper link according to an embodiment of the present utility model;

FIG. 4 is an exploded view of an upper link according to an embodiment of the present utility model;

fig. 5 is an enlarged view of the structure at H in fig. 1;

fig. 6 is a cross-sectional view of A-A in fig. 2.

In the figure:

1. an upper connecting rod; 11. a first bending plate; 12. a second bending plate; 13. a first ear plate; 14. a shaft sleeve; 15. a first sealing plate; 16. a second sealing plate; 17. a third sealing plate; 18. a second ear plate; 19. an oil cylinder ear plate; 2. a lower connecting rod; 3. a first bracket; 4. a second bracket; 5. a luffing cylinder; 6. a pin shaft; 7. a proximity switch sensor; 71. a nut; 8. a sleeve; 9. swinging the oil cylinder; 100. a telescoping arm; 101. an end plate; 200. an operating platform; 201. a controller; 202. and operating the handle.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be interpreted broadly, as for example, they may be fixedly connected, or may be detachably connected, or may be electrically connected, or may be directly connected, or may be indirectly connected through an intermediary, or may be in communication with one another in two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

As shown in fig. 1-6, the embodiment of the utility model provides a lightweight fly arm for an aerial work platform, which comprises an upper connecting rod 1, a lower connecting rod 2, a first bracket 3, a second bracket 4 and an amplitude cylinder 5. The upper connecting rod 1 and the lower connecting rod 2 are arranged in parallel, the first bracket 3 is hinged to one end of the upper connecting rod 1 and one end of the lower connecting rod 2, which are positioned on the same side, the second bracket 4 is hinged to the other end of the upper connecting rod 1 and the other end of the lower connecting rod 2, which are positioned on the same side, the upper connecting rod 1, the lower connecting rod 2, the first bracket 3 and the second bracket 4 form a parallelogram structure, the luffing cylinder 5 is arranged between the upper connecting rod 1 and the lower connecting rod 2, one end of the upper connecting rod 1 and one end of the first bracket 3 are hinged to the telescopic arm 100, the second bracket 4 is connected with the operating platform 200 through the swinging cylinder 9, the ascending and the descending of the operating platform 200 can be realized through the extension and the retraction of the luffing cylinder 5, and the swinging cylinder 9 can drive the operating platform 200 to swing in the horizontal direction; in order to realize the light weight design of the light weight fly jib of the aerial work platform, the upper connecting rod 1 comprises a first bending plate 11 and a second bending plate 12, the first bending plate 11 and the second bending plate 12 are concave channel steel, the first bending plate 11 and the second bending plate 12 are mutually buckled and welded to form the upper connecting rod 1 with a box-shaped structure, and the first bending plate 11 and the second bending plate 12 can be manufactured by adopting different plate thickness processing; optionally, the first bending plate 11 close to the amplitude cylinder 5 is a concave channel steel with a thicker plate thickness, the second bending plate 12 far away from the amplitude cylinder 5 is a concave channel steel with a thinner plate thickness, the thickness of 4mm can be adopted, the section width of the first bending plate 11 is smaller than the section width of the second bending plate 12, and the second bending plate 12 can be sleeved on the first bending plate 11 during welding so as to enable mutual welding to be firmer; the first bending plate 11 has a thicker plate thickness for ensuring the bearing capacity of the upper connecting rod 1, and the second bending plate 12 adopts concave channel steel with a thinner plate thickness for realizing the light weight design of the upper connecting rod 1.

This aerial working platform lightweight fly jib is through the first bent plate 11 and the second bent plate 12 welding that will separate body and board thickness are different become upper connecting rod 1, has realized the lightweight design of aerial working platform lightweight fly jib, and can satisfy the bearing requirement simultaneously, structural design is reasonable.

With continued reference to fig. 2-4, the upper link 1 further includes two first ear plates 13 and two second ear plates 18, the first ear plates 13 and the second ear plates 18 are respectively and fixedly disposed at two ends of the upper link 1 along the length direction thereof, the two first ear plates 13 are symmetrically disposed at two side surfaces of the upper link 1 along the width direction thereof, and the first bending plate 11 and the second bending plate 12 are simultaneously welded with the first ear plates 13; the two second lug plates 18 are symmetrically arranged on two side surfaces of the upper connecting rod 1 along the width direction, and the first bending plate 11 and the second bending plate 12 are simultaneously welded and connected with the second lug plates 18. The two first ear plates 13 are arranged between the two end plates 101 of the telescopic arm 100, the first bracket 3 comprises two hinge plates, the two hinge plates are respectively clamped between the end plates 101 and the first ear plates 13 at two sides, and the pin shaft 6 sequentially passes through one end plate 101, one hinge plate, one first ear plate 13, the other hinge plate and the other end plate 101, so that the upper connecting rod 1 is hinged to the telescopic arm 100 through the two first ear plates 13, and meanwhile, the first bracket 3 is hinged to the telescopic arm 100; two second ear panels 18 are hinged to the second bracket 4. This structural design is reasonable, simple to operate.

In order to improve the connection strength of the two first ear plates 13, with continued reference to fig. 4, a shaft sleeve 14 is disposed between the two first ear plates 13, two ends of the shaft sleeve 14 are fixedly connected with the two first ear plates 13 respectively, and when the two first ear plates 13 are hinged between the two end plates 101 through the pin shaft 6, the pin shaft 6 can be inserted into the shaft sleeve 14. Through setting up axle sleeve 14 between two first otic placodes 13, can make round pin axle 6 rotate more nimble, and improved first otic placode 13's bearing capacity, improved tensile strength.

In order to further improve the overall strength of the upper connecting rod 1, the upper connecting rod 1 further comprises a first sealing plate 15, a second sealing plate 16 and a third sealing plate 17, wherein the first sealing plate 15 is welded between the two first ear plates 13 and is positioned at the upper ends of the two first ear plates 13, one end of the first sealing plate 15, which is away from the telescopic arm 100, is welded with the second bending plate 12, and the second sealing plate 16 and the third sealing plate 17 are respectively sealed and welded at two ends of the upper connecting rod 1 along the length direction thereof; further, the third shrouding 17 is the shrouding of bending, and the one side board of the shrouding of bending seals the tip of connecting rod 1, and another curb plate welds in the bottom surface of first bending board 11, reinforcing joint strength.

The middle parts of the first bending plate 11 and the second bending plate 12 are also welded with two oil cylinder lug plates 19, the two oil cylinder lug plates 19 are symmetrically arranged on two side surfaces of the first bending plate 11 and the second bending plate 12 along the width direction of the upper connecting rod 1, one end of the amplitude changing oil cylinder 5 is hinged with the two oil cylinder lug plates 19, and the other end is hinged with the hinged part of the lower connecting rod 2 and the first bracket 3.

In order to reduce the impact force when the operation platform 200 is lowered to the low point or lifted upwards from the low point, the shaking of the operation platform 200 is reduced, the lightweight fly arm for the aerial work platform further comprises a proximity switch sensor 7, the proximity switch sensor 7 is arranged on the end plates 101, the detection head of the proximity switch sensor 7 stretches into the space between the two end plates 101, when the lightweight fly arm for the aerial work platform drives the operation platform 200 to descend to the low point, the upper connecting rod 1 rotates to a set position, the detection head of the proximity switch sensor 7 is opposite to the first lug 13, the proximity switch sensor 7 is triggered, and the telescopic speed of the amplitude cylinder 5 is controlled by the controller 201, so that the operation platform 200 has a certain buffer.

The control principle is as follows: when the operation platform 200 descends, before the proximity switch sensor 7 is triggered, the shrinkage speed of the luffing cylinder 5 keeps the maximum speed action so as to ensure that the operation platform 200 descends rapidly, after the operation platform descends to a set position, the proximity switch sensor 7 is triggered, at this time, the controller 201 controls the shrinkage speed of the luffing cylinder 5 to decrease linearly until the operation platform 200 descends to the lowest point, and the speed of the luffing cylinder 5 descends to zero; when the operation platform 200 is lifted, at this time, the proximity switch sensor 7 is in a triggered state, and the controller 201 controls the extension speed of the luffing cylinder 5 to be linearly increased to the maximum.

For convenient control, the operation platform 200 is provided with an operation handle 202, the extension and the contraction of the luffing cylinder 5 can be realized through the operation handle 202, the luffing cylinder 5 is controlled through a proportional electromagnetic valve, and the controller 201 controls the opening degree of the proportional electromagnetic valve to control the expansion and contraction speed of the luffing cylinder 5. Illustratively, when the operator pushes the operating handle 202 forward, the controller 201 outputs an upward amplitude signal, the controller 201 detects whether the proximity switch sensor 7 has a signal, if the proximity switch sensor 7 has a signal, it indicates that the first ear plate 13 is located at the position of the detection head of the proximity switch sensor 7, the proportional value of the proportional solenoid valve is linearly increased from zero, the proportional value of the proportional solenoid valve is controlled by the current value, and is detected once every certain time, if the proximity switch sensor 7 can still detect a signal, the current value is continuously linearly increased until the current value reaches a constant value; if the controller 201 detects that the proximity switch sensor 7 has no signal, it controls the proportional solenoid valve to be opened at a constant current value. When an operator pulls the operation handle 202 backwards, the controller 201 outputs a downward amplitude signal, the controller 201 detects whether a proximity switch has a signal, and if the proximity switch sensor 7 has a signal, the proportional value of the proportional solenoid valve is linearly reduced, namely the current value is linearly reduced until the current value is reduced to zero; if the proximity switch sensor 7 has no signal, the proportional solenoid valve is controlled to be opened at a constant current value, and the proportional solenoid valve is detected at regular intervals until the proximity switch sensor 7 has a signal, and the control current value is linearly reduced.

For the installation of convenient proximity switch sensor 7, refer to fig. 5 and 6, the medial surface welding of end plate 101 has sleeve 8, sleeve 8 internal surface is ladder structure including intercommunication first hole and second hole, the diameter of first hole is greater than the diameter of second hole, and be provided with the through-hole with first hole intercommunication on the end plate 101, the internal surface of second hole is provided with the internal thread, proximity switch sensor 7 pass through-hole and first hole after with second hole threaded connection, proximity switch sensor 7's detection head can run through sleeve 8, and proximity switch sensor 7's other part can be located sleeve 8, can effectively provide the protection for proximity switch sensor 7, prevent that it from taking place to collide with and damage.

In order to further fix the proximity switch sensor 7, after the proximity switch sensor 7 is screwed to the sleeve 8, the distance between the detection head and the first ear plate 13 can be adjusted by rotating the proximity switch sensor 7 to make the detection accuracy higher, and after the position of the proximity switch sensor 7 is adjusted, the proximity switch sensor 7 is screwed into the detection head through the nut 71 and screwed into contact with the sleeve 8 to fix the proximity switch sensor 7 to the sleeve 8.

Optionally, two proximity switch sensors 7 are provided, the two proximity switch sensors 7 are symmetrically disposed on the two end plates 101, when one of the two proximity switch sensors 7 fails, signals sent by the two proximity switch sensors 7 are inconsistent, the controller 201 can send out a failure alarm prompt, and meanwhile control the expansion speed of the amplitude cylinder 5 or limit the action of the amplitude cylinder to improve safety.

The utility model also provides an aerial working platform, which comprises the lightweight fly arm of the aerial working platform.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. The utility model provides an aerial working platform lightweight fly jib, includes connecting rod (1), lower connecting rod (2), first support (3), second support (4) and become width of cloth hydro-cylinder (5), go up connecting rod (1) with lower connecting rod (2) each other parallel arrangement, first support (3) are articulated go up connecting rod (1) with lower connecting rod (2) are located the one end of homonymy, second support (4) are articulated go up connecting rod (1) with lower connecting rod (2) are located the other end of homonymy, become width of cloth hydro-cylinder (5) set up in go up connecting rod (1) with down between connecting rod (2), go up connecting rod (1) with first support (3) articulated one end articulates in flexible arm (100), operation platform (200) are connected to second support (4), its characterized in that go up connecting rod (1) include first bent plate (11) and second bent plate (12), first bent plate (11) with second bent plate (12) are located the other one end of homonymy, become width of cloth hydro-cylinder (1) with become width of cloth (2) is close to each other, become width of cloth hydro-cylinder (11) is close to one another bent plate (5) become width of cloth.

2. The aerial working platform lightweight fly jib according to claim 1, wherein the upper connecting rod (1) further comprises two first lug plates (13), the two first lug plates (13) are symmetrically and fixedly arranged on two side surfaces of the upper connecting rod (1), the first lug plates (13) are fixedly connected with the first bending plates (11) and the second bending plates (12) at the same time, and the two first lug plates (13) are hinged between the two end plates (101) of the telescopic arm (100) through pin shafts (6).

3. The aerial work platform lightweight fly arm according to claim 2, wherein a shaft sleeve (14) is arranged between the two first ear plates (13), and the pin shaft (6) is arranged in the shaft sleeve (14) in a penetrating manner.

4. The aerial working platform lightweight fly jib according to claim 2, wherein the upper connecting rod (1) further comprises a first sealing plate (15), a second sealing plate (16) and a third sealing plate (17), the first sealing plate (15) is arranged between the two first ear plates (13) and positioned at the upper ends of the two first ear plates (13), one end of the first sealing plate (15) deviating from the telescopic arm (100) is connected with the second bending plate (12), and the second sealing plate (16) and the third sealing plate (17) respectively seal the two ends of the upper connecting rod (1) along the length direction thereof.

5. The aerial work platform lightweight fly jib according to claim 1, further comprising a proximity switch sensor (7), wherein the proximity switch sensor (7) is disposed on the telescopic boom (100), and when the upper link (1) rotates to a set position, the proximity switch sensor (7) can be triggered to further control the telescopic speed of the luffing cylinder (5).

6. The aerial work platform lightweight fly jib according to claim 5, wherein said proximity switch sensor (7) is disposed on said telescopic jib (100) by means of a sleeve (8), an inner surface of said sleeve (8) is provided with an internal thread, and said proximity switch sensor (7) is screwed to said sleeve (8).

7. The aerial work platform lightweight fly jib according to claim 6, wherein the proximity switch sensor (7) is further provided with a nut (71), and when the proximity switch sensor (7) is screwed to the sleeve (8), the nut (71) can be screwed to the proximity switch sensor (7) to fix the position of the proximity switch sensor (7) relative to the sleeve (8).

8. The aerial work platform lightweight fly jib according to claim 5, wherein two proximity switch sensors (7) are provided, and two proximity switch sensors (7) are symmetrically provided on two end plates (101) of the telescopic boom (100).

9. The aerial work platform lightweight fly jib according to claim 5, characterized in that the luffing cylinder (5) is controlled by a proportional solenoid valve, and the expansion and contraction speed of the luffing cylinder (5) is realized by controlling the opening of the proportional solenoid valve after the proximity switch sensor (7) is triggered.

10. An aerial work platform comprising the aerial work platform lightweight fly arm of any of claims 1-9.