CN207644071U - Adjustable movable universal wheel - Google Patents

Abstract

The utility model relates to the technical field of bearing machinery, in particular to a telescopic movable universal wheel. Includes sleeve, sleeve adapter ring, positioning bayonet. Two through holes are opened at both ends of the side wall connecting the fixed end sleeve, and an annular plate is connected outward along the outer wall at the lower end, which is connected with the annular plate connected to one end of the movable sleeve to form an annular cavity, and the two sleeves pass through the cavity. Balls are placed in the cavity to form an upper and lower body, and can rotate relative to each other in the axial direction. The extension or retraction of the wheel body from the opening of the movable sleeve is controlled by rotating the positioning bayonet inserted into the through hole. The utility model can realize the opening and closing of the roller only by rotating the positioning bayonet, which solves the contradiction between the stability and the mobility of the traditional universal wheel, and makes the universal wheel have strong dynamic and Determine controllability. And easy to operate, has strong practicability.

Description

Telescopic movable caster

technical field

The utility model relates to the technical field of bearing machinery, in particular to a telescopic movable universal wheel.

Background technique

In order to prevent the movement and instability of the existing universal wheels in a stationary state, the wheel brake device is used to lock the wheel body. The defect of this method is that the wheel body is in point contact. On the ground, even if the wheels do not rotate, they are not stable enough, and the load-bearing universal wheels are easily deformed when they are stationary for a long time, which affects the use and shortens the life.

Utility model content

In order to solve the defects that the universal wheel in the prior art is unstable in a static state and the wheel body is still easy to slide when locked, the utility model provides a telescopic movable universal wheel that has strong stability and is easy to roll. wheel.

By rotating the positioning bayonet, the universal wheel can be used in the same way as the general universal wheel when it is extended out of the sleeve. When it is stationary, the sleeve is retracted and no force is applied, and the sleeve touches the ground to bear force, which improves the stability of the load Stability and the wheel body is not easily deformed.

The technical solution adopted by the utility model to solve the technical problem is: a telescopic movable universal wheel, comprising a sleeve, a sleeve connecting ring, and a positioning bayonet. Among them, the fixed end is the part of the utility model connected with the carrier, and the two ends of the side wall of the sleeve connected with the fixed end are opened with two through holes along the diameter line of the sleeve, and the lower end is connected with an annular plate outward along the outer wall. The annular plate connected inwardly with one end of the movable sleeve forms an annular cavity connection. The two sleeves are connected as a whole by placing balls in the cavity and can rotate relative to each other in the axial direction. The outer diameter of the universal wheel column is smaller than that of the fixed end sleeve. The inner diameter of the cylinder and the movable sleeve, the rotating positioning bayonet is inserted into the through hole, and the wheel column can slide up and down in the sleeve through opening and closing, and the wheel body protrudes or retracts from the opening of the movable sleeve.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a schematic front view of the structure of the utility model (opened state).

Fig. 2 is a schematic side view of the structure of the utility model (closed state).

In the figure 1. Fixed end, 2. Fixed end connecting sleeve, 3. Rotary positioning bayonet, 4. Ball, 5. Movable sleeve, 6. Universal wheel, 7. Wheel frame, 8. Roller shaft, 9. Roller, 10. movable end sleeve annular plate, 11. fixed end sleeve annular plate, 12. through hole, 13. movable sleeve opening.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

The telescopic movable universal wheel consists of a fixed end 1, a sleeve connected to the fixed end 2, a rotating positioning pin 3, a ball 4, a movable sleeve 5 at the lower opening, a universal wheel 6, a wheel frame 7, a roller shaft 8, and a roller 9. An annular plate 10 at the movable sleeve end, an annular plate 11 at the fixed sleeve end, a through hole 12 and an opening 13 for the movable sleeve are formed. Wherein, the fixed end 1 is fixed to the bottom of the load with bolts. There are two through holes 12 on both sides of the side wall connecting the fixed end sleeve 2, and the lower end is connected with an annular plate 11 outward along the outer wall, and the annular plate 10 connected inwardly with one end of the movable sleeve forms an annular cavity. The barrel can rotate axially relative to each other by placing balls in the cavity. The extension or retraction of the roller 9 from the movable sleeve opening 13 is controlled by rotating the positioning bayonet 3 inserted into the through hole.

When it needs to move, the rotating positioning bayonet forces the roller downward, the wheel body stretches out to touch the ground, the movable sleeve hangs in the air by gravity, and the annular plate and the ball form a bearing to follow the roller horizontally. When it needs to be stationary, rotate the positioning bayonet to move the roller upwards, the roller retracts to the sleeve and no longer bears force, and the sleeve supports the object.

Claims (1)

1. A telescopic movable universal wheel, including a sleeve, a sleeve connecting ring, and a positioning bayonet, characterized in that two through holes are respectively opened on both sides of the side wall of the fixed end connecting the sleeve, and the other end is along the outer wall. There is an annular plate connected to the outside, and the annular plate connected to one end of the movable sleeve forms an annular cavity. By placing balls in the cavity, the two sleeves are connected as a whole, and can be rotated relative to each other in the axial direction. The positioning detent of the hole controls the roller below the wheel column to protrude or retract from the movable sleeve opening.