CN211847051U

CN211847051U - Bridge expanding mechanism of self-propelled aerial work platform

Info

Publication number: CN211847051U
Application number: CN201922168857.5U
Authority: CN
Inventors: 许志伟; 徐春华; 邹彩珍
Original assignee: Suzhou Weilipu Hydraulic Machinery Equipment Co ltd
Current assignee: Suzhou Weilipu Hydraulic Machinery Equipment Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-11-03
Anticipated expiration: 2029-12-06

Abstract

The utility model provides a self-propelled aerial working platform expand bridge mechanism, the on-line screen storage device comprises a base, the interior chamber of base is provided with expands bridge device, expand bridge device including through the bolt fastening be the driving motor that the level set up on the bottom plate of the interior chamber of base, driving motor's output is connected with positive and negative threaded rod, all be connected with the movable block on the positive and negative threaded rod one end thread section, two the bearing frame, two all have welded on the top surface of movable block all be connected with crank link mechanism in the bearing frame, two crank link mechanism's top all is equipped with the bearing frame, two crank link mechanism's top is connected with the sliding block, two the push rod has all been welded on the opposite one end surface of sliding block, two the one end of push rod all has the gyro wheel through the leg joint. The utility model is not only simple in structure is compact, and space utilization is high moreover to can realize increaseing or dwindling the operation scope, improve the operating efficiency.

Description

Bridge expanding mechanism of self-propelled aerial work platform

Technical Field

The utility model relates to an aerial working platform equipment technical field mainly relates to a self-propelled aerial working platform expand bridge construction.

Background

From walking aerial working platform for realizing the maximum range of operation radius, need to make the width of automobile body as big as possible to guarantee the stability of operation, but consider long-distance transport and trafficability characteristic, conventional automobile body width is restricted, just so need increase an expansion bridge function, and the wheel base accessible hydraulic control of two sets of tires increases. Therefore self-propelled aerial working platform generally is provided with expands bridge mechanism, and current bridge mechanism that expands is mostly horizontal extending structure, and its primary structure is pneumatic cylinder and hydraulic telescoping rod etc. drives hydraulic telescoping rod work through the pneumatic cylinder, promotes axle axial motion and realizes expanding the bridge and contracting the bridge, and extending mechanism itself has just taken a lot of automobile body widths, leads to the equipment width can't further reduce, and is more troublesome during the while use. Therefore, a bridge expanding mechanism of a self-propelled aerial work platform with small occupied space needs to be developed.

SUMMERY OF THE UTILITY MODEL

The utility model mainly provides a self-propelled aerial working platform expand bridge mechanism for solve the technical problem who provides among the above-mentioned background art.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

a bridge expanding mechanism of a self-propelled aerial working platform comprises a base, wherein an inner chamber of the base is provided with a bridge expanding device, the bridge expanding device comprises a driving motor which is horizontally arranged and fixed on a bottom plate of the inner chamber of the base through bolts, the output end of the driving motor is connected with a positive threaded rod and a negative threaded rod, positive threaded threads and negative threaded threads at one end, far away from the driving motor, of the positive threaded rod and the negative threaded rod are respectively connected with a moving block, a first limit baffle is arranged between the two moving blocks, the bottom of the first limit baffle is welded on the bottom plate of the inner chamber of the base, bearing seats are respectively welded on the surfaces of the top ends of the two moving blocks, crank connecting rod mechanisms are respectively connected in the two bearing seats through bearings in a rotating manner, the top ends of the two crank connecting rod mechanisms are respectively provided with a bearing seat, and the, two the opposite one end surface of sliding block all welds there is the push rod, two the push rod is kept away from the one end of sliding block all has the gyro wheel through the leg joint.

Preferably, the two ends of the positive and negative threaded rod are symmetrically and penetratingly connected with fixing pieces, the two fixing pieces are correspondingly arranged on one sides of the two moving blocks far away from the first limiting baffle respectively, and the bottom ends of the two fixing pieces are fixed on the bottom plate of the inner cavity of the base through bolts.

Preferably, the bilateral symmetry welding of sliding block has the fixture block.

Preferably, the top of sliding block is equipped with the fixed plate, the top welding of fixed plate is in the top of cavity in the base, the spout has been seted up to the bottom of fixed plate, the spout with sliding block sliding connection, the center of spout is provided with second limit baffle, second limit baffle's both sides all are provided with two reset spring, every reset spring keeps away from second limit baffle's one end all with one side of sliding block is connected.

Preferably, the inner walls of the two sides of the sliding groove are symmetrically provided with clamping grooves, and the clamping grooves are clamped with the clamping blocks.

Preferably, the both ends symmetry of cavity in the base is equipped with strutting arrangement, two strutting arrangement is all including setting up the cavity top is the pneumatic cylinder of perpendicular setting in the base, two the output of pneumatic cylinder all is connected with hydraulic telescoping rod, two hydraulic telescoping rod's bottom all is connected with the lifter plate, two the both ends bottom symmetric connection of lifter plate has a plurality of first cushion columns, and is a plurality of first cushion column is kept away from the one end fixedly connected with buffer board of lifter plate.

Preferably, the bottom center department of buffer board is connected with the second cushion column, the second cushion column is kept away from the one end of buffer board runs through be connected with the sucking disc behind the base bottom casing.

Compared with the prior art, the beneficial effects of the utility model are that:

one is as follows: when the bridge needs to be expanded, the driving motor is started to work, so that the positive and negative threaded rods drive the two moving blocks to move in opposite directions, the crank-link mechanism drives the sliding blocks to slide outwards along the sliding grooves, and the rollers can be pushed to the degree needing to be expanded through the push rods;

when the roller needs to be contracted, the sliding block is pulled back inwards under the action of the reset spring, the driving motor drives the positive and negative threaded rod to rotate, so that the positive and negative threaded rod drives the two moving blocks to move in opposite directions, the roller can be pulled to the required contraction degree through the push rod, the structure is simple and compact, the space utilization rate is high, the operation range can be enlarged or reduced, and the operation efficiency is improved;

the second step is as follows: through starting two pneumatic cylinder work for two hydraulic telescoping rod drive the lifter plate motion simultaneously, thereby accessible second cushion column and sucking disc support the base, stability when improving high altitude construction guarantees the safety when the staff constructs.

The present invention will be explained in detail with reference to the drawings and specific embodiments.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram of the bridge expansion device of the present invention;

fig. 3 is a schematic structural view of the fixing plate of the present invention;

fig. 4 is a schematic structural view of the supporting device of the present invention.

Reference numerals: 1. a base; 11. a fixing plate; 111. a chute; 112. a card slot; 113. a second limit baffle; 114. a return spring; 2. a roller; 3. a bridge expansion device; 31. a drive motor; 311. a positive and negative threaded rod; 32. a moving block; 33. a first limit baffle; 34. a fixing member; 35. a crank link mechanism; 351. a bearing seat; 36. a slider; 361. a clamping block; 37. a push rod; 4. a support device; 41. a hydraulic cylinder; 411. a hydraulic telescopic rod; 42. a lifting plate; 421. a first buffer column; 43. a buffer plate; 431. a second buffer column; 44. and (4) sucking discs.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully with reference to the accompanying drawings, in which several embodiments of the present invention are shown, but the present invention can be implemented in different forms, and is not limited to the embodiments described in the text, but rather, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the use of the term knowledge in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to the attached drawings 1-4, a bridge expanding mechanism of a self-propelled aerial work platform comprises a base 1, wherein an inner chamber of the base 1 is provided with a bridge expanding device 3, the bridge expanding device 3 comprises a driving motor 31 fixed on a bottom plate of the inner chamber of the base 1 through bolts and horizontally arranged, an output end of the driving motor 31 is connected with a positive and negative threaded rod 311, positive and negative threaded segments of one end of the positive and negative threaded rod 311, which is far away from the driving motor 31, are both connected with moving blocks 32, a first limit baffle 33 is arranged between the two moving blocks 32, the bottom of the first limit baffle 33 is welded on the bottom plate of the inner chamber of the base 1, bearing seats 351 are welded on the surfaces of the top ends of the two moving blocks 32, crank link mechanisms 35 are rotatably connected in the two bearing seats 351 through bearings, and bearing seats 351 are arranged on the top ends of the two crank link mechanisms 35, and the top ends of the two crank link mechanisms 35 are fixedly connected with sliding blocks 36 through the bearing seats 351, push rods 37 are welded on the surfaces of the two opposite ends of the sliding blocks 36, and one ends, far away from the sliding blocks 36, of the two push rods 37 are connected with idler wheels 2 through supports.

Referring to fig. 2, two ends of the positive and negative threaded rod 311 are symmetrically connected with fixing members 34 through a penetrating manner, the two fixing members 34 are respectively and correspondingly disposed on one sides of the two moving blocks 32 far away from the first limit baffle 33, and bottom ends of the two fixing members 34 are fixed on a bottom plate of an inner cavity of the base 1 through bolts. In this embodiment, the fixing member 34 is designed to effectively fix the positive and negative threaded rod 311, thereby preventing the motor from driving the rotation to cause danger.

Referring to fig. 3, a fixed plate 11 is disposed at the top end of the sliding block 36, the top end of the fixed plate 11 is welded to the top end of the inner cavity of the base 1, a sliding groove 111 is disposed at the bottom end of the fixed plate 11, the sliding groove 111 is slidably connected to the sliding block 36, a second limiting baffle 113 is disposed at the center of the sliding groove 111, two return springs 114 are disposed on two sides of the second limiting baffle 113, and one end of each return spring 114, which is far away from the second limiting baffle 113, is connected to one side of the sliding block 36. In the present embodiment, the design of the return spring 114 can facilitate the reduction of power consumption and energy saving when the roller 2 is retracted.

Referring to fig. 2 and 3, the sliding block 36 has two symmetrical sides welded with the fixture blocks 361; the inner walls of the two sides of the sliding groove 111 are symmetrically provided with clamping grooves 112, and the clamping grooves 112 are clamped with the clamping blocks 361. In the present embodiment, the slide block 36 can be prevented from falling from the slide groove 111 by the engagement of the engaging groove 112 and the engaging block 361.

Referring to fig. 4, two ends of the inner chamber of the base 1 are symmetrically provided with supporting devices 4, each of the two supporting devices 4 includes a hydraulic cylinder 41 which is vertically arranged at the top end of the inner chamber of the base 1, output ends of the two hydraulic cylinders 41 are connected with hydraulic telescopic rods 411, bottom ends of the two hydraulic telescopic rods 411 are connected with a lifting plate 42, bottoms of two ends of the lifting plate 42 are symmetrically connected with a plurality of first buffer columns 421, and one ends of the first buffer columns 421, which are far away from the lifting plate 42, are fixedly connected with buffer plates 43; the bottom center of buffer plate 43 is connected with second buffer column 431, the one end that second buffer column 431 is kept away from buffer plate 43 runs through be connected with sucking disc 44 behind the base 1 bottom casing. In this embodiment, by starting the two hydraulic cylinders 41 to work, the two hydraulic telescopic rods 411 simultaneously drive the lifting plate 42 to move, so that the base 1 can be supported by the second buffer column 431 and the suction cup 44, and the stability during high-altitude operation is improved; further, through the effect of first cushion column 421, buffer board 43 and second cushion column 431, the vibrations that can effectual reduction during operation brought to improve the stability of device, ensure staff's personal safety.

The utility model discloses a concrete operation as follows:

when the utility model is needed to be used, firstly, the device is moved to a designated position, when the bridge needs to be expanded, the driving motor 31 is started to work, the driving motor 31 drives the positive and negative threaded rod 311 to rotate, the positive and negative threaded rod 311 drives the two movable blocks 32 to move in opposite directions, the crank connecting rod mechanism 35 drives the sliding block 36 to slide outwards along the sliding chute 111 until the push rod 37 pushes the roller 2 to the degree required to be expanded, when the bridge needs to be contracted, the sliding block 36 is pulled back inwards under the action of the reset spring 114, meanwhile, the driving motor 31 drives the positive and negative threaded rod 311 to rotate, the positive and negative threaded rod 311 drives the two movable blocks 32 to move in opposite directions until the push rod 37 pulls the roller 2 to the degree;

when the expansion degree is increased to a specified degree, the two hydraulic cylinders 41 are started to work, the two hydraulic telescopic rods 411 simultaneously drive the lifting plate 42 to move downwards until the second buffer column 431 drives the suction cup 44 to contact with the ground and support the device, and the roller 2 is ensured not to contact with the ground.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents, and thus the embodiments of the invention are intended only as illustrative examples of the invention and no limitation of the invention is intended whatsoever to be construed by the embodiments of the invention.

Claims

1. The utility model provides a self-propelled aerial working platform expand bridge mechanism, includes base (1), its characterized in that: the inner cavity of the base (1) is provided with a bridge expanding device (3), the bridge expanding device (3) comprises a driving motor (31) which is horizontally arranged on a bottom plate of the inner cavity of the base (1) through bolts, the output end of the driving motor (31) is connected with a positive and negative threaded rod (311), the positive and negative threaded rod (311) is far away from positive and negative threaded sections at one end of the driving motor (31) and is connected with moving blocks (32), a first limit baffle (33) is arranged between the two moving blocks (32), the bottom of the first limit baffle (33) is welded on the bottom plate of the inner cavity of the base (1), the top surfaces of the two moving blocks (32) are welded with bearing seats (351), two crank connecting rod mechanisms (35) are rotatably connected in the bearing seats (351) through bearings, and the top ends of the crank connecting rod mechanisms (35) are provided with bearing seats (351), and the top of two crank link mechanism (35) all is through bearing frame (351) fixedly connected with sliding block (36), two the opposite one end surface of sliding block (36) all welds push rod (37), two push rod (37) are kept away from the one end of sliding block (36) all has gyro wheel (2) through leg joint.

2. The bridge expansion mechanism of the self-propelled aerial work platform as claimed in claim 1, wherein: two ends of the positive and negative threaded rod (311) are symmetrically connected with fixing pieces (34) in a penetrating mode, the two fixing pieces (34) are correspondingly arranged on one sides, far away from the first limiting baffle (33), of the two moving blocks (32), and the bottom ends of the two fixing pieces (34) are fixed on a bottom plate of the inner cavity of the base (1) through bolts.

3. The bridge expansion mechanism of the self-propelled aerial work platform as claimed in claim 1, wherein: the two sides of the sliding block (36) are symmetrically welded with clamping blocks (361).

4. The bridge expansion mechanism of a self-propelled aerial work platform as claimed in claim 3, wherein: the top of sliding block (36) is equipped with fixed plate (11), the top welding of fixed plate (11) the top of inner chamber of base (1), spout (111) have been seted up to the bottom of fixed plate (11), spout (111) with sliding block (36) sliding connection, the center of spout (111) is provided with second limit baffle (113), the both sides of second limit baffle (113) all are provided with two reset spring (114), every reset spring (114) are kept away from the one end of second limit baffle (113) all with one side of sliding block (36) is connected.

5. The bridge expansion mechanism of the self-propelled aerial work platform as claimed in claim 4, wherein: clamping grooves (112) are symmetrically formed in the inner walls of the two sides of the sliding groove (111), and the clamping grooves (112) are clamped with the clamping blocks (361).

6. The bridge expansion mechanism of the self-propelled aerial work platform as claimed in claim 1, wherein: the both ends symmetry of interior cavity of base (1) is equipped with strutting arrangement (4), two strutting arrangement (4) all are including setting up pneumatic cylinder (41) that the cavity top was perpendicular setting in base (1), two the output of pneumatic cylinder (41) all is connected with hydraulic telescoping rod (411), two the bottom of hydraulic telescoping rod (411) all is connected with lifter plate (42), two the both ends bottom symmetry of lifter plate (42) is connected with a plurality of first buffer column (421), and is a plurality of first buffer column (421) are kept away from the one end fixedly connected with buffer plate (43) of lifter plate (42).

7. The bridge expansion mechanism of a self-propelled aerial work platform as claimed in claim 6, wherein: the bottom center department of buffer board (43) is connected with second cushion column (431), second cushion column (431) are kept away from the one end of buffer board (43) is run through be connected with sucking disc (44) behind base (1) bottom casing.