阅读说明：本技术 一种机械结构承重升降平台及使用方法 (Mechanical structure bearing lifting platform and use method ) 是由 杨子英 彭会文 李硕 唐晓东 孙丽丽 于 2021-08-10 设计创作，主要内容包括：一种机械结构承重升降平台及使用方法,包括底座,底座下表面边缘均布设置有支腿,内定位环和导向座位于底座的环形凹槽内且通过螺栓安装在底座上,导向座上沿周向均布的平槽槽底靠近内圆面一侧安装有挡销,导向座的多个平槽内分别设置有楔形块,楔形块与挡销正对的侧壁上钻有弹簧安装孔,在弹簧安装孔与挡销之间安装弹簧,导向座凸台外圆面与外定位环内圆面滑动间隙配合,外定位环下端面设置的斜槽与楔形块的斜面配合,传动环套在底座顶部的外圆面处,限位螺钉穿过传动环的腰型通孔与底座螺接,且在腰型通孔的设置下使传动环可沿底座转动,所述传动环的内部型面与楔形块的尾部的圆弧面相切。本发明升降平台操作轻便结构稳定精度高且制造成本低。(A mechanical structure bearing lifting platform and a using method thereof comprise a base, wherein supporting legs are uniformly distributed on the edge of the lower surface of the base, an inner positioning ring and a guide seat are positioned in an annular groove of the base and are arranged on the base through bolts, stop pins are arranged at one side, close to an inner circular surface, of the bottom of a flat groove which is uniformly distributed on the guide seat along the circumferential direction, wedge blocks are respectively arranged in a plurality of flat grooves of the guide seat, spring mounting holes are drilled on the side wall of each wedge block, which is opposite to the stop pins, a spring is arranged between the spring mounting hole and the stop pin, the outer circle surface of the boss of the guide seat is in sliding clearance fit with the inner circle surface of the outer positioning ring, a chute arranged on the lower end surface of the outer positioning ring is matched with the inclined surface of the wedge block, the transmission ring is sleeved on the outer circle surface of the top of the base, the limit screw passes through the waist-shaped through hole of the transmission ring and is in threaded connection with the base, and the transmission ring can rotate along the base under the arrangement of the waist-shaped through hole, and the inner molded surface of the transmission ring is tangent to the arc surface at the tail part of the wedge-shaped block. The lifting platform is convenient to operate, stable in structure, high in precision and low in manufacturing cost.)

1. A mechanical structure bearing lifting platform is characterized by comprising a base, a limiting screw, an outer positioning ring, an inner positioning ring and a guide seat, wherein supporting legs are uniformly arranged at the edge of the lower surface of the base, an annular groove is processed on the upper surface of the base, the inner positioning ring and the guide seat are positioned in the annular groove, the inner positioning ring is positioned at the inner side of the guide seat, the inner circular surface of the inner positioning ring and the outer circular surface of the guide seat are positioned through the groove surfaces of the annular groove, the inner positioning ring and the guide seat are fixedly arranged on the base through bolts, flat grooves which are uniformly distributed along the circumferential direction are formed in the guide seat, a stop pin is arranged at one side, close to the inner circular surface, of the bottom of each flat groove, wedge blocks are respectively arranged in a plurality of flat grooves of the guide seat, a spring mounting hole is drilled in the side wall, opposite to the stop pin, of each wedge block, a spring is arranged in each spring mounting hole, and one end of each spring abuts against the stop pin, the circular surface of guide holder boss and the interior disc sliding clearance fit of outer holding ring, the chute that the terminal surface set up under the outer holding ring and the inclined plane cooperation of wedge, the groove cover that the transmission ring set up through its lower surface is in the outer disc department at base top, and be clearance fit between the base, stop screw passes the waist type through-hole and the base spiro union of transmission ring, and makes the transmission ring can follow the base rotation under the setting of waist type through-hole, the inside profile of transmission ring is tangent with the arc surface of the afterbody of wedge.

2. A mechanical structure load-bearing lifting platform according to claim 1, characterized in that: waist type through-hole is seted up along the circumference equipartition to transmission ring body upper surface edge, makes the transmission ring rotate on the base through setting up of waist type through-hole, the inside profile of transmission ring comprises four eccentric arc surfaces, and four eccentric arc surfaces cooperate with four wedges respectively.

3. A mechanical structure load-bearing lifting platform according to claim 1, characterized in that: and a handle is screwed on the outer circular surface of the transmission ring.

4. Use of a mechanical structure load-bearing lifting platform according to claim 1, characterized in that it comprises the following steps:

placing the casing unit on an outer positioning ring, positioning the casing unit through a boss of the outer positioning ring, placing the rotor unit on an inner positioning ring, and positioning the rotor unit through a boss of the inner positioning ring; when the casing unit needs to be lifted to a certain height relative to the rotor unit, the transmission ring is rotated anticlockwise through the handle, the transmission ring forces the wedge block to move towards the side close to the circle center along the radial direction, the inclined surface of the wedge block is matched with the inclined groove of the outer positioning ring to push the outer positioning ring to move upwards, after the casing unit is lifted to a certain height relative to the rotor unit, the inner molded surface of the transmission ring is tangent to the arc surface of the wedge block to realize self-locking, so that the outer positioning ring is fixed at the required height, and meanwhile, the spring is gradually compressed when the wedge block moves towards the circle center side; after the engine blade is installed and debugged; the transmission ring is clockwise rotated through the handle, and under the action of elastic potential energy of the spring, the wedge-shaped block moves towards the side far away from the circle center along the radial direction under the action of the spring and returns to the initial height, so that the relative height conversion of the outer positioning ring relative to the inner positioning ring is realized.

Technical Field

The invention belongs to the technical field of mechanical structure lifting platforms, and particularly relates to a mechanical structure bearing lifting platform and a using method thereof.

Background

In the process of assembling the engine, the casing and the rotor unit body are firstly positioned according to the height of the size of a design drawing for preliminary assembly according to the requirements of a new process route, and then the casing unit is required to be lifted by a certain height relative to the rotor unit body for installing and debugging the engine blade. The unit of the aeroengine part is large in size and heavy in weight, the requirement of a new assembly process route for realizing accurate positioning of a casing and a rotor unit body and free conversion of relative height of the casing and the rotor unit body is high in difficulty, and no mature design case exists in the past industry. The problems can not be solved in an electric and hydraulic mode, but the scheme has a complex design structure and high cost, and the transmission precision and reliability can not be ensured.

Disclosure of Invention

In order to achieve the purpose, the invention adopts the following technical scheme:

a mechanical structure bearing lifting platform comprises a base, a limiting screw, an outer positioning ring, an inner positioning ring and a guide seat, wherein supporting legs are uniformly arranged at the edge of the lower surface of the base, an annular groove is processed on the upper surface of the base, the inner positioning ring and the guide seat are positioned in the annular groove, the inner positioning ring is positioned at the inner side of the guide seat, the inner circular surface of the inner positioning ring and the outer circular surface of the guide seat are positioned through the groove surfaces of the annular groove, the inner positioning ring and the guide seat are fixedly arranged on the base through bolts, flat grooves which are uniformly distributed along the circumferential direction are formed in the guide seat, a stop pin is arranged at one side, close to the inner circular surface, of the bottom of each flat groove, wedge blocks are respectively arranged in the plurality of flat grooves of the guide seat, spring mounting holes are drilled in the side walls, opposite to the stop pins, springs are arranged in the spring mounting holes, one ends of the springs abut against the stop pins, the boss outer circular surface of the guide seat is in sliding clearance fit with the inner circular surface of the outer positioning ring, the inclined plane cooperation of chute and wedge that the terminal surface set up under the outer holding ring, the driving ring through the recess cover that its lower surface set up in the outer disc department at base top, and with the base between be clearance fit, stop screw passes the waist type through-hole and the base spiro union of driving ring, and makes the driving ring can follow the base rotation under the setting of waist type through-hole, the inside profile of driving ring is tangent with the arc surface of the afterbody of wedge.

Waist type through-hole is seted up along the circumference equipartition to transmission ring body upper surface edge, makes the transmission ring rotate on the base through setting up of waist type through-hole, the inside profile of transmission ring comprises four eccentric arc surfaces, and four eccentric arc surfaces cooperate with four wedges respectively.

And a handle is screwed on the outer circular surface of the transmission ring.

A use method of a mechanical structure bearing lifting platform comprises the following steps:

placing the casing unit on an outer positioning ring, positioning the casing unit through a boss of the outer positioning ring, placing the rotor unit on an inner positioning ring, and positioning the rotor unit through a boss of the inner positioning ring; when the casing unit needs to be lifted to a certain height relative to the rotor unit, the transmission ring is rotated anticlockwise through the handle, the transmission ring forces the wedge block to move towards the side close to the circle center along the radial direction, the inclined surface of the wedge block is matched with the inclined groove of the outer positioning ring to push the outer positioning ring to move upwards, after the casing unit is lifted to a certain height relative to the rotor unit, the inner molded surface of the transmission ring is tangent to the arc surface of the wedge block to realize self-locking, so that the outer positioning ring is fixed at the required height, and meanwhile, the spring is gradually compressed when the wedge block moves towards the circle center side; after the engine blade is installed and debugged; the transmission ring is clockwise rotated through the handle, and under the action of elastic potential energy of the spring, the wedge-shaped block moves towards the side far away from the circle center along the radial direction under the action of the spring and returns to the initial height, so that the relative height conversion of the outer positioning ring relative to the inner positioning ring is realized.

The invention has the technical effects that:

1. the lifting platform consists of a fixed inner positioning ring and an outer positioning ring with the height switched, and the height of the outer positioning ring can be switched between two heights with the difference of 3mm, so that the parallelism of the outer positioning ring and the inner positioning ring is ensured.

2. The lifting platform can easily push up a weight of not less than 300 kilograms and ensure higher positioning precision. The structure that the lever, the eccentric circle and the wedge block are combined is utilized, the thrust is amplified by tens of times, hundreds of jin of heavy objects are easily pushed up, and the device is light in operation, stable in structure and high in positioning accuracy.

3. The lifting platform is light in operation, stable in structure, high in precision and low in manufacturing cost, and provides stable and reliable technical support and guarantee for the assembly process of the aircraft engine.

Drawings

FIG. 1 is a top view of a mechanical structure load bearing lift platform of the present invention;

FIG. 2 is a C-C sectional view of the mechanical structure load-bearing elevating platform of the present invention;

FIG. 3 is a top view of the drive ring of the mechanical structure load bearing lift platform of the present invention;

FIG. 4 is a front view of a wedge block of the mechanical structure load bearing lift platform of the present invention;

FIG. 5 is a top view of a wedge block of the mechanical structure load-bearing elevating platform of the present invention;

FIG. 6 is a top view of a guide base of the mechanical structure load-bearing elevating platform of the present invention;

FIG. 7 is a sectional view of the guide base B-B of the mechanical structure load-bearing elevating platform of the present invention;

FIG. 8 is a bottom view of an outer positioning ring of the mechanical structure load bearing lift platform of the present invention;

FIG. 9 is a cross-sectional view of the outer positioning ring A-A of the mechanical load bearing elevating platform of the present invention;

1-base, 2-transmission ring, 201-waist-shaped through hole, 202-inner profile, 3-wedge-shaped block, 301-spring mounting hole, 302-arc surface, 4-outer positioning ring, 401-chute, 5-inner positioning ring, 6-guide seat, 601-stop pin hole, 602-flat groove, 7-limit screw, 8-supporting leg, 9-stop pin, 10-spring and 11-handle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1 to 9, a mechanical structure bearing lifting platform comprises a base 1, a limit screw 7, an outer positioning ring 4, an inner positioning ring 5 and a guide seat 6, wherein the lower surface edge of the base 1 is uniformly provided with supporting legs 8 along the circumferential direction, the supporting legs 8 are in threaded connection with the base 1, the upper surface of the base 1 is processed with an annular groove, the inner positioning ring 5 and the guide seat 6 are positioned in the annular groove, the inner positioning ring 5 is positioned inside the guide seat 6, the inner circular surface of the inner positioning ring 5 and the outer circular surface of the guide seat 6 are both positioned through the groove surface of the annular groove, the inner positioning ring 5 and the guide seat 6 are both fixedly installed on the base 1 through bolts, the guide seat 6 is provided with flat grooves 602 uniformly distributed along the circumferential direction, stop pins 9 are installed in stop pin holes 601 at the bottom of the flat grooves 602 near the inner circular surface, wedge blocks 3 are respectively arranged in the four flat grooves 602 of the guide seat 6, wedge 3 has drilled spring mounting hole 301 with the lateral wall that stop pin 9 is just right, installs spring 10 in spring mounting hole 301, and spring 10 stretches out spring mounting hole 301 part end and supports in the blind hole that stops pin 9, the outer disc of 6 bosss of guide holder and the interior disc sliding clearance fit of outer holding ring 4, and the inclined plane cooperation of chute 401 and wedge 3 that the terminal surface set up under the outer holding ring 4, the groove cover that transmission ring 2 set up through its lower surface is in the outer disc department at base 1 top, and be clearance fit between the base 1, stop screw 7 passes the waist type through-hole and the base 1 spiro union of transmission ring 2, and makes transmission ring 2 can follow base 1 constant angle rotation under the setting of waist type through-hole, the inside profile of transmission ring 2 is tangent with the arc surface 302 of the afterbody of wedge 3.

Waist type through-hole 201 is seted up along the circumference equipartition to transmission ring 2 body upper surface edge, makes transmission ring 2 rotate on base 1 through setting up of waist type through-hole 201, transmission ring 2's inside profile 202 comprises four eccentric arc surfaces, and four eccentric arc surfaces cooperate with four wedge 3 respectively.

The outer circular surface of the transmission ring 2 is in threaded connection with a handle 11.

A use method of a mechanical structure bearing lifting platform comprises the following steps:

placing the casing unit on an outer positioning ring 4, positioning the casing unit through a boss of the outer positioning ring 4, placing the rotor unit on an inner positioning ring 5, and positioning the rotor unit through a boss of the inner positioning ring 5; when the box unit needs to be lifted to a certain height relative to the rotor unit, the handle 11 rotates the transmission ring 2 anticlockwise, the transmission ring 2 forces the wedge block 3 to move towards the circle center side along the radial direction, the inclined surface of the wedge block 3 is matched with the inclined groove 401 of the outer positioning ring 4 to push the outer positioning ring 4 to move upwards, the box unit is lifted to a certain height relative to the rotor unit, the inner molded surface of the transmission ring 2 is tangent to the arc surface of the wedge block 3 to realize self-locking, so that the outer positioning ring 4 is fixed at the required height, and meanwhile, the spring 10 is gradually compressed when the wedge block 3 moves towards the circle center side; after the engine blade is installed and debugged; the driving ring 2 is clockwise rotated through the handle 11, and under the action of elastic potential energy of the spring 10, the wedge-shaped block 3 moves to the side far away from the circle center along the radial direction and returns to the initial height, so that the conversion of the relative height of the outer positioning ring 4 to the inner positioning ring 5 is realized, and the smooth retraction of the wedge-shaped block 3 is ensured due to the arrangement of the spring 10 and the stop pin 9; through accurate calculation and guarantee of process accuracy, the four wedge blocks 3 are synchronously and stably pushed, the parallelism and height accuracy between the positioning surfaces of the outer positioning ring 4 and the inner positioning ring 5 are further guaranteed, and the lifting platform is good in stability, low in manufacturing cost and convenient to maintain.