CN210101955U

CN210101955U - Self-adaptive four-point uniform bearing vehicle body mechanism

Info

Publication number: CN210101955U
Application number: CN201822163873.0U
Authority: CN
Inventors: 杜林宝; 龚卫民; 王晨; 李�杰; 程檀; 刘一博
Original assignee: Research Institute of Nuclear Power Operation; China Nuclear Power Operation Technology Corp Ltd
Current assignee: Research Institute of Nuclear Power Operation; China Nuclear Power Operation Technology Corp Ltd
Priority date: 2018-12-21
Filing date: 2018-12-21
Publication date: 2020-02-21
Anticipated expiration: 2028-12-21

Abstract

The utility model belongs to nuclear power station maintenance field relates to a self-adaptation four-point evenly bears car body mechanism. In the nuclear power station maintenance process, various crawlers of a vehicle body structure have uneven stress on each wheel in the operation process due to the fact that the structure or the crawling plane is uneven, and the maintenance effect is affected. The utility model discloses a include: bottom plate A, connecting seat, slide bearing A, axle head baffle 1, connecting screw A, wheel, connecting axle, slide bearing B, nylon ring, bottom plate B, axle head baffle 2, connecting screw B, bottom plate B, maintenance tool connecting seat. The connecting seats are divided into a left connecting seat A and a right connecting seat B; the connecting seat A is fixed on the bottom plate A through a screw; the connecting seat B is fixed on the bottom plate B through a screw; connecting seat A and connecting seat B are connected through the connecting axle, separate through the nylon ring in the middle of connecting seat A and connecting seat B. After using this patent, place the automobile body in four wheels also can contact with ground simultaneously behind the ground of unevenness, and four wheel atress are even.

Description

Self-adaptive four-point uniform bearing vehicle body mechanism

Technical Field

The invention belongs to the field of nuclear power station maintenance, and relates to a self-adaptive four-point uniform bearing vehicle body mechanism.

Background

In order to ensure safe and reliable operation of equipment in the operation process of a nuclear power plant, the equipment is required to be overhauled frequently, a plurality of overhauling works are carried out underwater, and an overhauling tool needs to be moved to a proper place underwater. The stability of the maintenance tool must be guaranteed in the moving process. At present, a maintenance tool is generally sent to a maintenance area through a manual long-rod tool or various crawlers during nuclear power maintenance. The long rod tool is large in limitation due to the structural reason, and crawlers of a plurality of vehicle body structures are uneven in stress of each wheel in the operation process due to the structure or the unevenness of a crawling plane and the like, and even are not in contact with the ground simultaneously, so that the maintenance tool is unstable in the moving process, and the maintenance effect is influenced.

The self-adaptive four-point uniform bearing vehicle body mechanism suitable for underwater maintenance operation can ensure that four points are simultaneously contacted with the ground and uniformly stressed during the walking process of a vehicle body, ensures the stable moving process of a maintenance tool and improves the maintenance quality.

Disclosure of Invention

The purpose is as follows:

the invention aims to solve the technical problem of providing a self-adaptive four-point uniform bearing vehicle body mechanism suitable for underwater maintenance operation, and the self-adaptive four-point uniform bearing vehicle body mechanism can solve the problems that four wheels are not contacted with the ground at the same time and the stress is not uniform in the motion process of a maintenance tool moving vehicle body during nuclear power underwater maintenance.

The technical scheme is as follows:

a self-adaptive four-point uniform bearing vehicle body mechanism comprises: bottom plate A, connecting seat, connecting screw A, omniwheel, bottom plate B, connecting screw B, bottom plate B. The connecting seat is divided into a left side and a right side which are respectively a connecting seat A and a connecting seat B; the connecting seat A is fixed on the bottom plate A through a screw; the connecting seat B is fixed on the bottom plate B through a screw; the connecting seat A and the connecting seat B are connected through a connecting shaft, and the connecting seat A and the connecting seat B are separated by a nylon ring; screw holes are formed at two ends of the connecting shaft; the left end of the connecting shaft is tightly pressed with the connecting seat A through the shaft end baffle 1 and the connecting screw A; the right end of the connecting shaft is tightly pressed with the connecting seat B through the shaft end baffle 2 and the connecting screw B.

The middle of the connecting seat A is provided with a shaft hole, the upper side and the lower side of the two ends of the shaft hole are respectively provided with a counter bore, and the sliding bearing A and the sliding bearing B are embedded into the counter bores at the two ends of the shaft hole of the connecting seat A.

The base plate A and the base plate B form a quadrilateral panel, and four corners of the quadrilateral panel are respectively provided with an omnidirectional wheel.

And a screw hole is reserved above the bottom plate B, and the maintenance tool connecting seat is arranged above the bottom plate B through a bolt.

The maintenance tool mounting seat is fixed above the bottom plate B and is positioned at the symmetrical center of a polygon formed by the four omnidirectional wheels.

The effect is as follows:

because the bottom plate A and the bottom plate B can rotate relatively around the connecting shaft, the four omnidirectional wheels are distributed symmetrically, and the bearing point of the vehicle body, namely the mounting seat of the maintenance tool, is positioned at the symmetrical center of a polygon formed by the four omnidirectional wheels. When the vehicle body is placed on the ground, the load is evenly distributed to the bottom plate a and the bottom plate B through the connecting shaft when the service tool is mounted on the service tool mounting seat. The state of three point atress of bottom plate A lower surface department (three stress point is 2 omniwheels and connecting seat A and bottom plate A's junction respectively), therefore 2 omniwheels on the bottom plate A all can contact with ground. The 2 wheels are symmetrically distributed relative to the connecting shaft, so that the force borne by the 2 omnidirectional wheels is the same. In a similar way, the bottom plate B is also in a three-point stressed state (the 2 omnidirectional wheels and the joint of the connecting seat B and the bottom plate B), so that the 2 omnidirectional wheels connected to the bottom plate B are all in contact with the ground. Because the

omnidirectional wheels

3 and 4 are symmetrically distributed relative to the connecting shaft, the stress of the

omnidirectional wheels

3 and 4 is the same. Therefore, the stress of the 4 omnidirectional wheels is equal in magnitude during working.

Four wheels are the omniwheel in this scheme, also can adopt other wheels, need consider the installation direction of wheel when adopting other wheels.

Drawings

FIG. 1 is a self-adaptive four-point uniform bearing vehicle body mechanism diagram

FIG. 2 is a top view of the vehicle body structure

FIG. 3 is a partial enlarged view of a sliding bearing portion

FIG. 4 is a partial enlarged view of the connection portion of the connector A and the connector B

FIG. 5 is a partial enlarged view of the right end of the connecting seat B

In the figure: 1. the tool comprises base plates A, 2, a connecting seat, 3, sliding bearings A, 4,

shaft end baffles

1, 5, connecting screws A, 6, an omnidirectional wheel, 7, a connecting shaft, 8, sliding bearings B, 9, a nylon ring, 10, base plates B, 11,

shaft end baffles

2, 12, connecting screws B, 13, base plates B, 14 and an overhauling tool connecting seat.

Detailed Description

The following detailed description of the patent refers to the accompanying drawings and specific embodiments:

as shown in fig. 1, includes: bottom plate A, connecting seat, slide bearing A, axle head baffle 1, connecting screw A, omniwheel, connecting axle, slide bearing B, nylon ring, bottom plate B, axle head baffle 2, connecting screw B, bottom plate B, maintenance tool connecting seat. The connecting seats are divided into a left connecting seat A and a right connecting seat B; the connecting seat A is fixed on the bottom plate A through a screw; the connecting seat B is fixed on the bottom plate B through a screw; connecting seat A and connecting seat B are connected through the connecting axle, separate through the nylon ring in the middle of connecting seat A and connecting seat B. As shown in fig. 3 and 5, screw holes are formed at two ends of the connecting shaft; the left end of the connecting shaft is tightly pressed with the connecting seat A through the shaft end baffle 1 and the connecting screw A; the right end of the connecting shaft is tightly pressed with the connecting seat B through the shaft end baffle 2 and the connecting screw B.

As shown in fig. 3 and 4, a shaft hole is formed in the middle of the connecting seat a, counterbores are respectively formed in the upper side and the lower side of each of the two ends of the shaft hole, and the sliding bearing a and the sliding bearing B are embedded into the counterbores of the two ends of the shaft hole of the connecting seat a.

As shown in fig. 2, the base plate a and the base plate B form a quadrangular panel, and an omni wheel is mounted at each of four corners of the quadrangular panel.

And a screw hole is reserved above the bottom plate B, and the maintenance tool connecting seat is arranged above the bottom plate B through a bolt. The maintenance tool mounting seat is fixed at a designated position on the bottom plate B and is positioned at the symmetrical center of a polygon formed by the four wheels.

The specific installation process is as follows:

step 1: mounting a connecting seat A on a bottom plate A, and mounting a connecting seat B on a bottom plate B;

step 2: embedding a sliding bearing 1 and a sliding bearing 2 into two ends of a central hole of a base A, connecting the connecting seat A and the connecting seat B into a whole through a connecting shaft, and isolating the connecting seat A and the connecting seat B through a nylon ring during connection;

and 3, step 3: the two ends of the connecting shaft are respectively pressed on the connecting seat A, B through the shaft end baffle and the connecting screw, and the bottom plate A and the bottom plate B are connected into a whole and can relatively rotate around the connecting shaft;

and 4, step 4: 4 omni-directional wheels with the same size and other wheels can be symmetrically and uniformly arranged on the bottom plate A and the bottom plate B according to a certain mode, and the vehicle body is placed on the ground, so that the four wheels can be simultaneously contacted with the ground, and even if the ground is uneven, the four wheels can be simultaneously contacted.

And 5, step 5: install the maintenance tool connecting seat on the bottom plate, and be in on the symmetry center of four wheels, the maintenance tool is installed on maintenance tool connecting seat after, and on the weight of maintenance tool transmitted 4 wheels through the body construction, 4 wheels atress size is the same and even atress.

Claims

1. A self-adaptive four-point uniform bearing vehicle body mechanism comprises: bottom plate A (1), connecting seat (2), connecting screw A (5), omniwheel (6), bottom plate B (10), connecting screw B (12), bottom plate B (10), its characterized in that: the connecting seats (2) are divided into a left connecting seat A and a right connecting seat B; the connecting seat A is fixed on the bottom plate A (1) through a screw; the connecting seat B is fixed on the bottom plate B (10) through a screw; the connecting seat A and the connecting seat B are connected through a connecting shaft (7), and the middle of the connecting seat A and the middle of the connecting seat B are separated through a nylon ring (9); screw holes are formed at two ends of the connecting shaft (7); the left end of the connecting shaft (7) is pressed tightly with the connecting seat A through a shaft end baffle 1(4) and a connecting screw A (5); the right end of the connecting shaft (7) is pressed tightly with the connecting seat B through a shaft end baffle 2(11) and a connecting screw B (12).

2. The adaptive four-point uniform bearing vehicle body mechanism of claim 1, wherein: the middle of the connecting seat A is provided with a shaft hole, the upper side and the lower side of the two ends of the shaft hole are respectively provided with a section of counter bore, and the sliding bearing A (3) and the sliding bearing B (8) are embedded into the counter bores at the two ends of the shaft hole of the connecting seat A.

3. The adaptive four-point uniform bearing vehicle body mechanism of claim 1, wherein: the bottom plate A (1) and the bottom plate B (10) form a quadrilateral panel; the bottom plate A (1) and the bottom plate B (10) can rotate relatively around the connecting shaft.

4. The adaptive four-point uniform bearing vehicle body mechanism of claim 3, wherein: four corners of the quadrilateral panel are respectively provided with an omnidirectional wheel (6).

5. The adaptive four-point uniform bearing vehicle body mechanism of claim 3, wherein: and a screw hole is reserved above the bottom plate B (10), and the overhauling tool connecting seat (14) is arranged above the bottom plate B (10) through a bolt and is positioned at the symmetrical center of a polygon formed by the four omnidirectional wheels.