Adjustable trundle

Abstract

The utility model discloses an adjustable trundle which comprises a supporting seat, a side plate is connected to one side of the bottom of the supporting seat in a welded mode, a moving wheel is connected to the inner side of the bottom of the side plate, a motor is fixedly installed in the middle of the bottom end of the supporting seat, the output end of the motor is connected with a threaded rod, and threaded sleeves are distributed above the threaded rod. By means of combined use of the motor, the threaded rod and the guide plate, the supporting height of the whole trundle can be conveniently adjusted subsequently according to actual use requirements, and therefore equipment can be conveniently and better moved subsequently, higher practicability is achieved, when the motor works, the threaded rod rotates along with the motor, and the supporting height of the whole trundle can be adjusted conveniently. The position height of the whole mounting base can be adjusted through threaded connection between the threaded rod and the threaded sleeve, and the stability of the mounting base in the longitudinal movement process can be improved through the combined arrangement of the guide plate.

Description

Technical Field

[0001] The utility model relates to the field of adjustable casters, in particular to an adjustable caster. Background Art

[0002] Casters include movable casters and fixed casters. Casters are usually installed directly as a standard part. In some applications, it is necessary to brake the casters, such as setting brakes or other braking structures to limit the rotation of the casters;

[0003] For example, an adjustable caster disclosed in the utility model with authorization announcement number CN216033529U can limit the rotation of the auxiliary mounting frame by setting a locking mechanism, so as to ensure the stability and safety of the supporting legs as the main supporting structure when the hydraulic cylinder is used as the main power. However, most of the current casters are directly installed on the bottom of the equipment when in use, and most of the current casters do not have an adjustment structure themselves, which leads to certain limitations in the use of the entire caster and poor overall practicality. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an adjustable caster, which can solve the problem that the existing casters can limit the rotation of the auxiliary mounting frame by setting a locking mechanism, and can ensure the stability and safety of using the supporting feet as the main supporting structure when using the hydraulic cylinder as the main power. However, most of the current casters are directly installed on the bottom of the equipment when in use, and most of the current casters themselves do not have an adjustment structure, which leads to certain limitations in the use of the entire caster and poor overall practicality.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: an adjustable caster, comprising a support seat, a side plate welded to one side of the bottom of the support seat, and a movable wheel is connected to the inner side of the bottom of the side plate, a motor is fixedly installed in the middle of the bottom end of the support seat, and a threaded rod is connected to the output end of the motor, a threaded sleeve is distributed above the threaded rod, and a mounting seat is fixedly installed on the other end of the threaded sleeve, an insertion rod is fixedly installed in the middle of the top rear end of the mounting seat, a guide frame is fixedly installed on one side of the bottom of the mounting seat, and a clamping structure is provided on the inner side of the guide frame, and a guide plate is distributed on one side of the threaded rod.

[0006] As a preferred technical solution of the utility model, the engaging structure includes a guide groove and a lock hole, the guide groove is arranged on the inner side of the guide frame, and one side of the guide groove is connected to the lock hole.

[0007] As a preferred technical solution of the utility model, a return spring is fixedly connected to the inner side of the top end of the guide plate, and the other end of the return spring is fixedly connected to a locking block, and an auxiliary slide is sleeved on the outer side of one end of the locking block.

[0008] As a preferred technical solution of the present utility model, the moving wheel and the side panels are rotationally connected, and the side panels are symmetrically distributed along the vertical center line of the moving wheel.

[0009] As a preferred technical solution of the utility model, the lock holes are distributed equidistantly along one side of the guide frame, and the lock holes and the guide frame form an integrated structure.

[0010] As a preferred technical solution of the utility model, the locking block is slidably connected to the guide plate through the return spring, and the outer diameter of the locking block is matched with the inner diameter of the locking hole.

[0011] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0012] 1. By using the motor, threaded rod and guide plate in combination, the support height of the entire caster can be adjusted according to the actual use requirements, so as to facilitate the subsequent movement of the equipment and have higher practicality. When the motor is working, the threaded rod will rotate accordingly, and then the threaded connection between the threaded rod and the threaded sleeve can realize the adjustment of the height of the entire mounting seat, and the guide plate can improve the stability of the mounting seat during the longitudinal movement.

[0013] 2. By using the reset spring, the locking block and the auxiliary slide in combination, the interface facilitates the subsequent quick engagement connection between the guide plate and the guide frame. When the reverse force generated by the deformation of the reset spring pushes the locking block, the locking block will slide laterally on the inner side of the guide plate, and then the locking block drives the auxiliary slide to move laterally. The auxiliary slide can improve the stability of the locking block during lateral movement. Then, when one end of the locking block is input into the inner side of the lock hole, the guide plate and the guide frame can be quickly engaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the adjustable caster of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the adjustable caster support seat of the utility model when viewed from above;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the adjustable caster guide plate of the utility model;

[0017] Figure 4This is a schematic diagram of the structure of the adjustable caster mounting seat of the utility model when viewed from above;

[0018] Among them: 1. Support seat; 2. Side plate; 3. Moving wheel; 4. Motor; 5. Threaded rod; 6. Threaded sleeve; 7. Mounting seat; 8. Insert rod; 9. Guide frame; 10. Guide groove; 11. Locking hole; 12. Guide plate; 13. Reset spring; 14. Locking block; 15. Auxiliary slide. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0020] Example

[0021] Please refer to Figure 1 As shown, the utility model provides an adjustable caster, including a support seat 1, a side plate 2 is welded to one side of the bottom of the support seat 1, and a moving wheel 3 is connected to the inner side of the bottom of the side plate 2, the moving wheel 3 and the side plate 2 are rotatably connected, and the side plate 2 is symmetrically distributed along the vertical center line of the moving wheel 3, a motor 4 is fixedly installed in the middle of the bottom end of the support seat 1, and a threaded rod 5 is connected to the output end of the motor 4, a threaded sleeve 6 is distributed above the threaded rod 5, and a mounting seat 7 is fixedly installed on the other end of the threaded sleeve 6, an insertion rod 8 is fixedly installed in the middle of the top rear end of the mounting seat 7, a guide frame 9 is fixedly installed on one side of the bottom of the mounting seat 7, and a clamping structure is provided on the inner side of the guide frame 9, and a guide plate 12 is distributed on one side of the threaded rod 5;

[0022] When in use, the entire device is fixedly installed on the bottom of the mobile device to be moved by the insertion rod 8, and then the position height of the mounting seat 7 is adjusted, and then the movable wheel 3 is used to realize the movement of the entire device, and the two side plates 2 symmetrically distributed along the movable wheel 3 can improve the structural strength of the entire caster itself, and play the purpose of bearing weight;

[0023] As a further implementation of this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a motor 4 is fixedly installed in the middle of the bottom end of the support seat 1, and a threaded rod 5 is connected to the output end of the motor 4, a threaded sleeve 6 is distributed above the threaded rod 5, and a mounting seat 7 is fixedly installed on the other end of the threaded sleeve 6, and a plug rod 8 is fixedly installed in the middle of the top rear end of the mounting seat 7, and a guide frame 9 is fixedly installed on one side of the bottom of the mounting seat 7, and a clamping structure is opened on the inner side of the guide frame 9, and the clamping structure includes a guide groove 10 and a lock hole 11, the guide groove 10 is opened on the inner side of the guide frame 9, and one side of the guide groove 10 is connected to The lock hole 11 is evenly distributed along one side of the guide frame 9, and the lock hole 11 and the guide frame 9 form an integrated structure. A guide plate 12 is distributed on one side of the threaded rod 5. A reset spring 13 is fixedly connected to the inner side of the top end of the guide plate 12, and a lock block 14 is fixedly connected to the other end of the reset spring 13. The lock block 14 is slidably connected to the guide plate 12 through the reset spring 13, and the outer diameter of the lock block 14 is adapted to the inner diameter of the lock hole 11. An auxiliary slide plate 15 is sleeved on the outer side of one end of the lock block 14;

[0024] The motor 4 is electrically connected to the power source installed inside the mobile device through a wire, so as to provide driving current for the motor 4 in the future. When adjusting the height of the mounting seat 7, the locking block 14 will be retracted to the inside of the guide plate 12 in advance.

[0025] When the support height of the entire caster needs to be adjusted, the motor 4 works to rotate the threaded rod 5 connected to its output end. Since the threaded rod 5 is threadedly connected to the threaded sleeve 6 through the threaded groove opened on its outer surface, the threaded sleeve 6 can be longitudinally moved when the threaded rod 5 rotates, and then the threaded sleeve 6 moves longitudinally to realize the longitudinal movement of the mounting seat 7 installed at its top height, thereby realizing the adjustment of the support height of the entire caster. At the same time, when the mounting seat 7 moves longitudinally, it will drive the guide frame 9 symmetrically arranged at its bottom to move longitudinally along the guide plate 12, thereby improving the installation The stability of the seat 7 during the longitudinal movement, and then when the position height adjustment is completed, the lateral force applied to the locking block 14 disappears, and then the reverse force generated by the deformation of the return spring 13 will push the locking block 14 in the reverse direction, and then the locking block 14 drives the auxiliary slide plate 15 to slide laterally on the inner side of the top of the guide plate 12, and the auxiliary slide plate 15 provided in combination can improve the stability of the locking block 14 during the lateral movement, and then when one end of the locking block 14 is input into the inner side of the locking hole 11, the mounting seat 7 and the supporting seat 1 can be connected by a snap-fit ​​connection, thereby improving the stability of the entire caster structure itself;

[0026] Specific working principle:

[0027] First, the entire caster structure is plugged into the bottom of the mobile device by setting the plug rod 8. Then, when the support height of the entire caster needs to be adjusted, the motor 4 works to rotate the threaded rod 5 connected to its output end. Since the threaded rod 5 is threadedly connected to the threaded sleeve 6 through the threaded groove opened on its outer surface, the threaded sleeve 6 can be longitudinally moved when the threaded rod 5 rotates. Then, the threaded sleeve 6 moves longitudinally to realize the longitudinal movement of the mounting seat 7 installed at its top height, thereby realizing the adjustment of the support height of the entire caster. At the same time, when the mounting seat 7 moves longitudinally, it will drive the guide frame 9 symmetrically arranged at its bottom to move along the guide plate 12 Then, the locking block 14 is moved laterally, thereby improving the stability of the mounting base 7 during the longitudinal movement. After the position height adjustment is completed, the lateral force applied to the locking block 14 disappears, and the reverse force generated by the deformation of the return spring 13 pushes the locking block 14 in the reverse direction. Then, the locking block 14 drives the auxiliary slide plate 15 to slide laterally on the inner side of the top end of the guide plate 12. The auxiliary slide plate 15 provided in combination can improve the stability of the locking block 14 during the lateral movement. Then, when one end of the locking block 14 is input into the inner side of the locking hole 11, the mounting base 7 and the supporting base 1 can be snapped together to improve the stability of the entire caster structure itself.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An adjustable caster, comprising a support base (1), characterized in that: A side plate (2) is welded to one side of the bottom of the support seat (1), and a moving wheel (3) is connected to the inner side of the bottom of the side plate (2). A motor (4) is fixedly mounted in the middle of the bottom end of the support seat (1), and a threaded rod (5) is connected to the output end of the motor (4). A threaded sleeve (6) is distributed above the threaded rod (5), and a mounting seat (7) is fixedly mounted on the other end of the threaded sleeve (6). An insertion rod (8) is fixedly mounted in the middle of the top rear end of the mounting seat (7). A guide frame (9) is fixedly mounted on one side of the bottom of the mounting seat (7), and a snap-fit ​​structure is provided on the inner side of the guide frame (9). A guide plate (12) is distributed on one side of the threaded rod (5).

2. The adjustable caster according to claim 1, characterized in that: The engaging structure comprises a guide groove (10) and a locking hole (11); the guide groove (10) is arranged on the inner side of the guide frame (9), and one side of the guide groove (10) is connected to the locking hole (11).

3. The adjustable caster according to claim 2, characterized in that: A return spring (13) is fixedly connected to the inner side of the top end of the guide plate (12), and a locking block (14) is fixedly connected to the other end of the return spring (13). An auxiliary sliding plate (15) is sleeved on the outer side of one end of the locking block (14).

4. The adjustable caster according to claim 1, characterized in that: The moving wheel (3) and the side plate (2) are rotatably connected, and the side plates (2) are symmetrically distributed along the vertical center line of the moving wheel (3).

5. The adjustable caster according to claim 2, characterized in that: The locking holes (11) are distributed at equal distances along one side of the guide frame (9), and the locking holes (11) and the guide frame (9) form an integrated structure.

6. The adjustable caster according to claim 3, characterized in that: The locking block (14) is slidably connected to the guide plate (12) via the return spring (13), and the outer diameter of the locking block (14) is matched to the inner diameter of the locking hole (11).

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