A caster with lifting function

Abstract

The utility model provides a trundle with lifting function, including electric push rod, the guide bush end part of electric push rod is connected with the sliding sleeve, the sliding sleeve is slidably matched with the sliding block, the sliding block is connected in the push rod of electric push rod, install the support frame on the sliding block, rotatably be provided with the pivot on the support frame, the pivot is along its axial symmetry and is provided with the support foot plate, the wheel is rotatably arranged between two support foot plates. The utility model has the advantages of: through electric push rod to drive the lifting of wheel, realizes the switching of air flow bed movement and floor state, avoids the accidental displacement of bed body.

Description

Technical Field

[0001] This utility model relates to the technical field of casters, and in particular to a caster with a lifting function. Background Technology

[0002] Air-flow beds are important clinical devices for controlling wound infection after skin grafting surgery, rescuing patients with large-area and severe burns, promoting flap maturation, and assisting in the treatment of patients with severe pressure injuries. The patient lies on the bed cover, and air is compressed into high-pressure gas by a compressor and blown into a mattress composed of microparticles. These microparticles are agitated, creating levitation force that lifts the patient, achieving a levitation function. The levitation force of the microparticles is similar to that of water; as the patient floats on these microparticles, the pressure distribution across the body is optimized.

[0003] Currently, most air-flow beds have fixed casters at the bottom, meaning the casters are rigidly connected to the bottom of the bed and the height is not adjustable. Although these casters allow the bed to move, once the bed reaches the designated position, the casters remain in contact with the ground. Casters subjected to long-term weight are prone to deformation and can easily shift due to collisions or pushing by people, thus failing to guarantee the stability of patients during treatment and rest. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a caster with a lifting function.

[0005] This utility model provides a caster with lifting function, including an electric push rod 4, a sliding sleeve 5 connected to the guide sleeve end of the electric push rod 4, a slider 6 slidably mounted inside the sliding sleeve 5, the slider 6 being connected to the push rod of the electric push rod 4, a support frame 3 mounted on the slider 6, a rotating shaft 8 rotatably mounted on the support frame 3, foot plates 2 symmetrically arranged along the axis of the rotating shaft 8, and a wheel 1 rolling between the two foot plates 2.

[0006] Furthermore, the cross-section of the sliding sleeve 5 is a hollow square, and chamfers are provided on all four sides of the sliding sleeve 5.

[0007] Furthermore, a buffer pad 7 is provided between the slider 6 and the support frame 3.

[0008] Furthermore, the bottom of the buffer pad 7 is provided with a countersunk hole, and a fixing bolt screwed to the slider 6 is provided in the countersunk hole.

[0009] Furthermore, the rotating shaft 8 is symmetrically provided with notches along its axis, and the support plate 2 is connected to the notches.

[0010] Furthermore, the wheel 1 is a 5-inch rubber wheel.

[0011] The advantages of this invention are as follows: The electric push rod drives the wheels to rise and fall, enabling the switching between the moving and grounded states of the air-flow bed, preventing accidental displacement; the sliding fit structure of the sliding sleeve and slider allows the electric push rod to lift and lower the wheels via the slider, with the slider and sliding sleeve acting as guides while bearing lateral forces on the electric push rod; the electric push rod achieves automated lifting and lowering via electric power, suitable for large and heavy air-flow beds; when the air-flow bed needs to be moved, the electric push rod can be extended, driving the wheels to descend until they contact the ground and lift the bed, thus moving the air-flow bed by the wheels; once the air-flow bed reaches the designated position, the electric push rod retracts, causing the wheels to rise and return to their original position, ensuring a smooth landing of the air-flow bed; a buffer pad is provided between the slider and the support frame; the rotating shaft can rotate the support plates and their wheels to change direction. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present utility model; Figure 2 This is the front view of the present invention; Figure 3 This is the right view of the present invention; Figure 4 for Figure 3 AA section view; Figure 5 for Figure 1 Enlarged view of part B. Detailed Implementation

[0013] The present invention will now be described in detail with reference to the accompanying drawings.

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0015] See Figures 1 to 5This utility model provides a caster with lifting function, which includes an electric push rod 4. The electric push rod is installed around the bottom of the air-flow bed. The upper end of the electric push rod is horizontally attached to the lower end of the bed to keep the electric push rod vertical. The guide sleeve end of the electric push rod 4 is connected to a sliding sleeve 5. A slider 6 is slidably mounted inside the sliding sleeve 5. The slider 6 is connected to the push rod of the electric push rod 4. The sliding sleeve and the slider have a sliding fit structure. The push rod of the electric push rod lifts and lowers through the slider, which plays a guiding role and bears the lateral force of the push rod of the electric push rod. A support frame 3 is installed on the slider 6. A rotating shaft 8 is rotatably arranged on the support frame 3. The rotating shaft 8 is symmetrically arranged with foot plates 2 along its axis. A wheel 1 is rolled between the two foot plates 2. The wheel 1 is a 5-inch rubber wheel. The electric actuator enables automated lifting and lowering via electric power. It is suitable for large and heavy air-flow beds. When the air-flow bed needs to be moved, the actuator extends, driving the wheels to descend until they contact the ground and lift the bed. This allows the air-flow bed to be moved by the wheels. Once the air-flow bed reaches the designated position, the actuator retracts, causing the wheels to rise and return to their original position. The bottom of the air-flow bed lands smoothly. Due to the weight of the air-flow bed, stability during use is ensured.

[0016] The cross-section of the sliding sleeve 5 is a hollow square, and chamfers are provided on all four sides of the sliding sleeve 5.

[0017] See Figure 5 A buffer pad 7 is provided between the slider 6 and the support frame 3.

[0018] The bottom of the buffer pad 7 has a countersunk hole, and a fixing bolt that is screwed into the slider 6 is installed in the countersunk hole.

[0019] The pivot 8 has notches symmetrically arranged along its axis, and the support plate 2 is connected to the notches. The pivot can rotate the support plate and its wheels to change direction.

[0020] Its working principle is as follows: When the air-flowing bed needs to be moved, the electric push rod can be extended. The push rod drives the slider to descend along the sliding sleeve. The slider, along with the buffer pad and wheels, descends until the wheels contact the ground and lift the bed. In this way, the air-flowing bed can be moved by the wheels. The rotating shaft can rotate the support plate and its wheels to change direction. When the air-flowing bed reaches the designated position, the electric push rod retracts. The push rod drives the slider to rise along the sliding sleeve. The slider, along with the buffer pad and wheels, rises and returns to its original position. The bottom of the air-flowing bed lands smoothly, ensuring the stability of the air-flowing bed during use, without the wheels having to bear the weight of the air-flowing bed for a long time.

[0021] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A caster with a lifting function, characterized in that: The device includes an electric push rod, the end of which is connected to a sliding sleeve. A slider is slidably mounted inside the sliding sleeve. The slider is connected to the push rod of the electric push rod. A support frame is mounted on the slider. A rotating shaft is rotatably mounted on the support frame. Support plates are symmetrically arranged along the axis of the rotating shaft. A wheel is rolled between the two support plates.

2. A caster with lifting function as described in claim 1, characterized in that: The cross-section of the sliding sleeve is a hollow square, and chamfers are provided on all four sides of the sliding sleeve.

3. A caster with lifting function as described in claim 1, characterized in that: A buffer pad is provided between the slider and the support frame.

4. A caster with lifting function as described in claim 3, characterized in that: The bottom of the buffer pad has a countersunk hole, and a fixing bolt screwed into the slider is installed in the countersunk hole.

5. A caster with lifting function as described in claim 1, characterized in that: The pivot shaft has notches symmetrically arranged along its axis, and the support plate is connected to the notches.

6. A caster with lifting function as described in claim 1, characterized in that: The wheels are 5-inch rubber wheels.

Images