Lifting placing wheel

Abstract

The utility model discloses a lifting placing wheel which comprises a mounting base, a mounting frame, a swing rod and a limiting rod. One end of the mounting frame is rotationally connected to the mounting base, the mounting frame is provided with a roller and a first rotating shaft, the mounting frame is provided with a long-strip through hole, and the first rotating shaft penetrates through the long-strip through hole and can reciprocate in the extending direction of the long-strip through hole; one end of the swing rod is rotationally connected to the mounting seat, and the other end of the swing rod is rotationally connected to the first rotating shaft; the limiting rod is rotationally connected to the mounting frame; the mounting frame rotates to drive the roller to be switched between a first position and a second position, when the roller is located at the first position, the roller is lower than the mounting base and exerts upward force on the roller through the supporting face, the first rotating shaft has the trend of moving towards the second end so that the first rotating shaft can abut against one end of the limiting rod, and the other end of the limiting rod abuts against the mounting frame; the mounting rack realizes self-locking; the lifting and placing wheel is simple in structure, convenient to operate and convenient for a user to use.

Description

Technical Field

[0001] The utility model relates to the technical field of roller devices, in particular to a lifting and placing wheel. Background Art

[0002] Rollers are usually installed on various equipment to facilitate the movement and transportation of the equipment. Some roller devices have a folding structure. When they do not need to be moved, the roller device can be folded up so that the equipment can be placed directly on the ground. The existing roller device has a complex structure and is inconvenient to operate. Utility Model Content

[0003] The utility model is intended to solve one of the technical problems in the related art at least to a certain extent. For this reason, the utility model proposes a lifting and placing wheel.

[0004] The present invention provides a lifting and placing wheel, which comprises:

[0005] Mounting seat;

[0006] A mounting frame, one end of the mounting frame is rotatably connected to the mounting base, the mounting frame is provided with a roller and a first rotating shaft, the roller is located on the lower side of the mounting frame, the mounting frame is provided with a long through hole, the first rotating shaft is passed through the long through hole, the first rotating shaft can reciprocate along the extension direction of the long through hole, the two ends of the long through hole are respectively a first end and a second end, the first end is located between the second end and the connection point between the mounting frame and the mounting base;

[0007] a swing rod, one end of which is rotatably connected to the mounting seat, and the other end of which is rotatably connected to the first rotating shaft;

[0008] a limiting rod, rotatably connected to the mounting frame;

[0009] The rotation of the mounting frame can drive the roller to switch between the first position and the second position, wherein:

[0010] When the roller is in the first position, the roller is lower than the mounting seat and the supported surface exerts an upward force on the roller, and the first rotating shaft has a tendency to move toward the second end so that the first rotating shaft abuts against one end of the limiting rod, and the other end of the limiting rod abuts against the mounting bracket, so that the mounting bracket is self-locking;

[0011] When the limiting rod is disengaged from the first rotating shaft, the first rotating shaft can move toward the second end, and the rotation of the mounting bracket drives the roller to move upward to the second position. When the roller is in the second position, the roller is higher than the lowermost end of the mounting seat.

[0012] The lifting and placing wheel of the present invention has at least the following technical effects: the mounting base of the lifting and placing wheel is mounted at the lower end of the side wall of the device; when the roller is needed, the mounting frame is rotated to move the roller to a first position, at which point the roller is lower than the mounting base and contacts the ground, thereby supporting the device. The roller is subjected to an upward force exerted by the ground, causing the end of the mounting frame away from the mounting base to swing upward, and the end of the swing arm away from the mounting base to swing upward, i.e., the first rotating shaft has a tendency to move toward the second end. Because the two ends of the limit rod respectively abut the first rotating shaft and the mounting frame, the first rotating shaft is blocked by the limit rod and cannot move toward the second end, thereby achieving self-locking of the mounting frame; when the roller is no longer needed, the limit rod is disengaged from the first rotating shaft, and the first rotating shaft moves toward the second end, causing the swing arm and the mounting frame to swing upward, and the roller swings upward to a second position, at which point the roller is higher than the lowest end of the mounting base and no longer supports the device. The lifting and placing wheel has a simple structure, is easy to operate, and is convenient for users to use.

[0013] According to some embodiments of the present invention, the mounting bracket is located on the left side of the mounting seat, a second rotating shaft is fixedly provided on the mounting bracket, and the middle portion of the limiting rod is rotatably connected to the second rotating shaft.

[0014] According to some embodiments of the present invention, when the roller is in the first position, the second rotating shaft is located above the long through hole, and the right end of the limiting rod is located below the first rotating shaft. The first rotating shaft applies a leftward force to the limiting rod so that the limiting rod has a tendency to rotate clockwise. The mounting bracket abuts against the left end of the limiting rod to limit the rotation of the limiting rod, and the mounting bracket realizes self-locking.

[0015] According to some embodiments of the present invention, when the mounting bracket is in a self-locking state, when the limit rod rotates counterclockwise, the limit rod pushes the first rotating shaft to move toward the first end, so that the right end of the limit rod moves to above the first rotating shaft, and the first rotating shaft moves toward the second end, and the mounting bracket swings upward to move the roller to the second position.

[0016] According to some embodiments of the present invention, a through hole is provided at the upper end of the mounting bracket, and the left end of the limiting rod can be rotated upward or downward through the through hole.

[0017] According to some embodiments of the present invention, the lifting and placing wheel also includes a return spring, one end of the return spring is connected to the mounting bracket, and the other end of the return spring is connected to the first rotating shaft. The return spring is always in a stretched state, and the return spring applies a force to the first rotating shaft to move toward the second end.

[0018] According to some embodiments of the present invention, when the roller is in the first position, the connection end of the rocker arm and the mounting seat is higher than the first rotating shaft. When the limit rod is disengaged from the first rotating shaft, the first rotating shaft moves toward the second end with the cooperation of the return spring and the roller, and the rocker arm and the mounting bracket rotate in a clockwise direction.

[0019] According to some embodiments of the present invention, the lifting and placing wheel further includes a torsion spring, which is installed on the limiting rod. The torsion spring applies a torsion force to the limiting rod so that the limiting rod tends to rotate in a clockwise direction.

[0020] According to some embodiments of the present invention, when the roller is in the second position, the lower end of the limit rod is in contact with the first rotating shaft, and when the first rotating shaft moves toward the first end so that the right end of the limit rod is located on the left side of the first rotating shaft, the limit rod rotates clockwise under the action of the torsion spring so that the right end of the limit rod is lower than the first rotating shaft, and the left end of the limit rod abuts against the mounting bracket, the roller moves to the first position, and the mounting bracket is self-locking.

[0021] According to some embodiments of the present invention, when the roller is in the first position, the elongated through hole extends in the left-right direction, the right end of the elongated through hole is the first end, and the left end of the elongated through hole is the second end.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic structural diagram of the lifting and placing wheels of some embodiments of the present invention;

[0025] Figure 2 is a schematic structural diagram of some embodiments of the present invention in which the roller is located in the first position;

[0026] Figure 3 This is a schematic structural diagram of some embodiments of the present invention in which the roller is located in the second position.

[0027] Figure Number:

[0028] Mounting base 100, mounting frame 110, roller 120, first rotating shaft 130, long through hole 140, second rotating shaft 150, through hole 160;

[0029] The rocker arm 200 , the limiting rod 210 , the return spring 220 , and the torsion spring 230 . DETAILED DESCRIPTION

[0030] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0032] In the description of this utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] The following is a further description of the embodiments of the present invention with reference to the accompanying drawings.

[0035] According to some embodiments of the present invention, referring to Figures 1 to 3 , the lifting and placing wheel includes a mounting base 100, a mounting frame 110, a rocker arm 200 and a limiting rod 210. The mounting frame 110 is located on the left side of the mounting base 100, and the right end of the mounting frame 110 is rotatably connected to the mounting base 100. A roller 120 is provided at the bottom of the mounting frame 110, and a first rotating shaft 130 is provided on the mounting frame 110. A long through hole 140 is provided on the side wall of the mounting frame 110. The first rotating shaft 130 passes through the long through hole 140, and the first rotating shaft 130 can move back and forth along the extension direction of the long through hole 140. The two ends of the long through hole 140 are respectively a first end and a second end. The first end is located between the second end and the connection point of the mounting frame 110 and the mounting base 100. The connection point of the mounting frame 110 and the mounting base 100 is point B, that is, the first end is located between the second end and point B. Figure 1 and Figure 2When the roller 120 is in the first position, the elongated through hole 140 extends in the left-right direction. The first end is the right end of the elongated through hole 140, and the second end is the left end of the elongated through hole 140. The right end of the swing arm 200 is rotatably connected to the mounting base 100. The connection point between the swing arm 200 and the mounting base 100 is point A. The left end of the swing arm 200 is rotatably connected to the first rotating shaft 130. The limiting rod 210 is located within the mounting frame 110 and is rotatably connected to the mounting frame 110.

[0036] The mounting frame 110 rotates to drive the roller 120 to switch between the first position and the second position, wherein:

[0037] Reference Figure 2 When the roller 120 is in the first position, the roller 120 is lower than the mounting base 100 and the supported surface exerts an upward force on it. The first rotating shaft 130 has a tendency to move toward the second end so that the first rotating shaft 130 abuts against one end of the limiting rod 210, and the other end of the limiting rod 210 abuts against the mounting bracket 110, so that the mounting bracket 110 is self-locking.

[0038] Reference Figure 3 When the limiting rod 210 is separated from the first rotating shaft 130, the first rotating shaft 130 can move toward the second end, and the rotation of the mounting frame 110 drives the roller 120 to move upward. The roller 120 is higher than the lower end of the mounting base 100, and the roller 120 is in the second position.

[0039] It can be understood that the mounting base 100 for the lifting wheel is installed at the lower end of the side wall of the device. When the roller 120 is in the first position, the roller 120 can support the device and drive the device to move; when the roller 120 is in the second position, the roller 120 no longer supports the device.

[0040] Reference Figure 2 and Figure 3When the roller 120 needs to be used, the mounting frame 110 is rotated counterclockwise to move the roller 120 to the first position. At this time, the roller 120 is lower than the mounting base 100, and the roller 120 contacts the ground to support the device. The roller 120 is subjected to the upward force applied by the ground, so that the end of the mounting frame 110 away from the mounting base 100 has a tendency to swing upward, and the end of the pendulum rod 200 away from the mounting base 100 also has a tendency to swing upward, that is, the mounting frame 110 has a tendency to rotate clockwise around point B, and the pendulum rod 200 has a tendency to rotate clockwise around point A. That is, the first rotating shaft 130 has a tendency to move to the left. At this time, the first rotating shaft 130 abuts against the right end of the limit rod 210 and applies force to the limit rod 210 to make the limit rod 210 rotate in the clockwise direction, so that the other end of the limit rod 210 abuts against the mounting bracket 110, and the mounting bracket 110 blocks the limit rod 210 from continuing to rotate in the clockwise direction, and finally the first rotating shaft 130 is blocked by the limit rod 210 and cannot move to the left, so that the mounting bracket 110 is self-locked and the roller 120 remains lower than the mounting base 100.

[0041] Reference Figure 2 and Figure 3 When the roller 120 is no longer needed, the limit rod 210 is disengaged from the first rotating shaft 130, the first rotating shaft 130 moves to the left, the mounting bracket 110 rotates clockwise around point B, and the swing arm 200 rotates clockwise around point A, thereby driving the roller 120 to swing upward to the second position. The roller 120 is higher than the lower end of the mounting base 100. At this time, the roller 120 no longer supports the device.

[0042] It should be noted that there are two ways for the limiting rod 210 to be separated from the first rotating shaft 130: the first way is to directly disassemble the limiting rod 210 so that the limiting rod 210 is separated from the mounting bracket 110. The second way is to refer to Figure 2 , a downward force is applied to the left end of the limit rod 210, so that the limit rod 210 overcomes the force of the first rotating shaft 130 and rotates counterclockwise. At this time, the limit rod 210 pushes the first rotating shaft 130 to move to the right. When the right end of the limit rod 210 is gradually higher than the first rotating shaft 130, the limit rod 210 no longer blocks the first rotating shaft 130, and the first rotating shaft 130 can move toward the second end of the long through hole 140, that is, move to the left. At the same time, the mounting frame 110 rotates clockwise around point B, and the rocker arm 200 rotates clockwise around point A, thereby driving the roller 120 to swing upward to the second position.

[0043] The lifting and placing wheel has a simple structure and is easy to operate and is convenient for users to use.

[0044] According to some embodiments of the present invention, referring to Figure 2The mounting bracket 110 is located on the left side of the mounting seat 100 , and the mounting bracket 110 is fixedly provided with a second rotating shaft 150 . The axial direction of the second rotating shaft 150 is the front-to-back direction, and the middle part of the limiting rod 210 is rotatably connected to the second rotating shaft 150 .

[0045] Reference Figure 2 When the roller 120 is in the first position, the second rotating shaft 150 is located above the long through hole 140, and the right end of the limiting rod 210 is located below the first rotating shaft 130. The first rotating shaft 130 applies a leftward force to the limiting rod 210, causing the limiting rod 210 to tend to rotate clockwise. The mounting bracket 110 abuts against the left end of the limiting rod 210 to restrict the limiting rod 210 from continuing to rotate clockwise. At this time, the mounting bracket 110 is self-locking.

[0046] Reference Figure 2 and Figure 3 When the mounting bracket 110 is in the self-locking state, the limiting lever 210 is operated to rotate counterclockwise. The limiting lever 210 pushes the first rotating shaft 130 toward the first end of the elongated through-hole 140, causing the right end of the limiting lever 210 to gradually move above the first rotating shaft 130. The first rotating shaft 130 then moves toward the second end, thereby driving the mounting bracket 110 to swing upward and causing the roller 120 to move to the second position. It is understood that during this process of the first rotating shaft 130 moving toward the second end, the roller 120 can be driven by the upward force exerted by the ground, thereby driving the first rotating shaft 130 toward the second end. Alternatively, the first rotating shaft 130 can be manually controlled to move toward the second end.

[0047] Preferably, refer to Figure 2 and Figure 3 The upper end of the mounting bracket 110 is provided with a through-hole 160, through which the left end of the limiting rod 210 can be rotated upward or downward. When the roller 120 is in the first position, the left end of the limiting rod 210 is located above the through-hole 160. When the roller 120 needs to be moved to the second position, a downward force is applied to the left end of the limiting rod 210 so that the left end of the limiting rod 210 passes through the through-hole 160 and enters the mounting bracket 110. At this time, the right end of the limiting rod 210 can be rotated upward and no longer blocks the first rotating shaft 130.

[0048] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 , the placement wheel also includes a return spring 220, refer to Figure 2 The right end of the return spring 220 is connected to the first rotating shaft 130, and the left end of the return spring 220 is connected to the mounting bracket 110. The return spring 220 is always in a stretched state, so that the return spring 220 applies a force to the first rotating shaft 130 to move toward the second end.

[0049] It is understandable that, referring to Figure 3 When the roller 120 is in the second position, the return spring 220 applies a force to the first rotating shaft 130 toward the second end, preventing the first rotating shaft 130 from moving toward the first end due to gravity, thereby preventing the roller 120 from moving downward. Moreover, when the roller 120 moves from the first position to the second position, when the limit rod 210 is rotated counterclockwise so that the right end of the limit rod 210 is above the first rotating shaft 130, the return spring 220 can move the first rotating shaft 130 toward the second end, eliminating the need for manual operation and saving time and effort.

[0050] Preferably, refer to Figure 2 When the roller 120 is in the first position, the connection end of the swing arm 200 and the mounting bracket 100 is higher than the first rotating shaft 130, that is, point A is higher than the first rotating shaft 130. When the limit rod 210 rotates and disengages from the first rotating shaft 130, the first rotating shaft 130 moves toward the second end under the cooperation of the return spring 220 and the roller 120. After the roller 120 is lifted off the ground and is no longer subject to the force of the ground, the first rotating shaft 130 continues to move toward the second end under the action of the return spring 220, thereby driving the swing arm 200 and the mounting bracket 110 to rotate in a clockwise direction.

[0051] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 The lifting and placing wheel further includes a torsion spring 230 mounted on the limiting rod 210. The torsion spring 230 applies a torsional force to the limiting rod 210, causing the limiting rod 210 to rotate in a clockwise direction. It can be understood that when the roller 120 moves from the second position to the first position, the first rotating shaft 130 moves toward the first end. The first rotating shaft 130 overcomes the force of the torsion spring 230 on the limiting rod 210 and gradually moves to the right end of the limiting rod 210. During this process, the limiting rod 210 rotates counterclockwise under the force of the first rotating shaft 130. When the first rotating shaft 130 moves to the right end of the limiting rod 210, under the action of the torsion spring 230, the limiting rod 210 rotates in a clockwise direction, so that the right end of the limiting rod 210 is lower than the first rotating shaft 130, so that the limiting rod 210 can prevent the first rotating shaft 130 from moving toward the second end, thereby realizing self-locking of the mounting bracket 110. The presence of the torsion spring 230 can save manual operation.

[0052] Reference Figure 2 and Figure 3When the roller 120 is in the second position, the lower end of the limit rod 210 is in contact with the first rotating shaft 130. When the first rotating shaft 130 moves toward the first end, so that the right end of the limit rod 210 is located on the left side of the first rotating shaft 130, the limit rod 210 rotates clockwise under the action of the torsion spring 230 so that the right end of the limit rod 210 is lower than the first rotating shaft 130. The left end of the limit rod 210 abuts against the mounting bracket 110, the roller 120 moves to the first position, and the mounting bracket 110 is self-locking.

[0053] Throughout this specification, references to the term "some embodiments" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0054] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A lifting wheel, characterized in that: include: Mounting seat (100); A mounting frame (110), one end of the mounting frame (110) is rotatably connected to the mounting seat (100), the mounting frame (110) is provided with a roller (120) and a first rotating shaft (130), the roller (120) is located at the lower side of the mounting frame (110), the mounting frame (110) is provided with a long through hole (140), the first rotating shaft (130) is passed through the long through hole (140), the first rotating shaft (130) can reciprocate along the extension direction of the long through hole (140), the two ends of the long through hole (140) are respectively a first end and a second end, the first end is located between the second end and the connection point between the mounting frame (110) and the mounting seat (100); a swing rod (200), one end of the swing rod (200) being rotatably connected to the mounting seat (100), and the other end of the swing rod (200) being rotatably connected to the first rotating shaft (130); A limiting rod (210) rotatably connected to the mounting frame (110); The mounting frame (110) is rotated to drive the roller (120) to switch between a first position and a second position, wherein: When the roller (120) is in the first position, the roller (120) is lower than the mounting seat (100) and the supported surface exerts an upward force on the roller (120), and the first rotating shaft (130) has a tendency to move toward the second end, so that the first rotating shaft (130) abuts against one end of the limiting rod (210), and the other end of the limiting rod (210) abuts against the mounting frame (110), and the mounting frame (110) is self-locking; When the limiting rod (210) is disengaged from the first rotating shaft (130), the first rotating shaft (130) can move toward the second end, and the rotation of the mounting frame (110) drives the roller (120) to move upward to the second position. When the roller (120) is in the second position, the roller (120) is higher than the lowermost end of the mounting seat (100).

2. The lifting wheel according to claim 1, characterized in that: The mounting frame (110) is located on the left side of the mounting seat (100), and a second rotating shaft (150) is fixedly provided on the mounting frame (110). The middle portion of the limiting rod (210) is rotatably connected to the second rotating shaft (150).

3. The lifting and placing wheel according to claim 2, characterized in that: When the roller (120) is in the first position, the second rotating shaft (150) is located above the long through hole (140), and the right end of the limiting rod (210) is located below the first rotating shaft (130). The first rotating shaft (130) applies a leftward force to the limiting rod (210) so that the limiting rod (210) has a tendency to rotate clockwise. The mounting frame (110) abuts against the left end of the limiting rod (210) to limit the rotation of the limiting rod (210), and the mounting frame (110) is self-locking.

4. The lifting and placing wheel according to claim 3, characterized in that: When the mounting frame (110) is in a self-locking state, when the limiting rod (210) rotates counterclockwise, the limiting rod (210) pushes the first rotating shaft (130) to move toward the first end, so that the right end of the limiting rod (210) moves above the first rotating shaft (130), and the first rotating shaft (130) moves toward the second end, and the mounting frame (110) swings upward to move the roller (120) to the second position.

5. The lifting and placing wheel according to claim 3, characterized in that: A through hole (160) is provided at the upper end of the mounting frame (110), and the left end of the limiting rod (210) can be rotated upward or downward through the through hole (160).

6. The lifting and placing wheel according to claim 1, characterized in that: The lifting and placing wheel further comprises a return spring (220), one end of the return spring (220) is connected to the mounting frame (110), and the other end of the return spring (220) is connected to the first rotating shaft (130). The return spring (220) is always in a stretched state, and the return spring (220) applies a force to the first rotating shaft (130) to move toward the second end.

7. The lifting and placing wheel according to claim 6, characterized in that: When the roller (120) is in the first position, the connection end between the rocker arm (200) and the mounting seat (100) is higher than the first rotating shaft (130); when the limiting rod (210) is separated from the first rotating shaft (130), the first rotating shaft (130) moves toward the second end under the cooperation of the return spring (220) and the roller (120), and the rocker arm (200) and the mounting frame (110) rotate in a clockwise direction.

8. The lifting and placing wheel according to claim 1, characterized in that: The lifting and placing wheel further comprises a torsion spring (230), which is mounted on the limiting rod (210). The torsion spring (230) applies a torsion force to the limiting rod (210) so that the limiting rod (210) tends to rotate in a clockwise direction.

9. The lifting and placing wheel according to claim 8, characterized in that: When the roller (120) is in the second position, the lower end of the limiting rod (210) is in contact with the first rotating shaft (130). When the first rotating shaft (130) moves toward the first end so that the right end of the limiting rod (210) is located on the left side of the first rotating shaft (130), the limiting rod (210) rotates clockwise under the action of the torsion spring (230) so that the right end of the limiting rod (210) is lower than the first rotating shaft (130). The left end of the limiting rod (210) abuts against the mounting bracket (110), the roller (120) moves to the first position, and the mounting bracket (110) is self-locked.

10. The lifting wheel according to claim 1, characterized in that: When the roller (120) is in the first position, the long through hole (140) extends in the left-right direction, the right end of the long through hole (140) is the first end, and the left end of the long through hole (140) is the second end.

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