Trundle

Abstract

The utility model relates to the technical field of quick clamps, in particular to a trundle which comprises a bottom plate and a support, and an extension column extending into the support is fixedly installed in the middle of the bottom plate. The single wheel is rotationally mounted in the bracket; the wave disc is fixedly mounted in the bracket; the adjusting mechanism is arranged in the support; and the buffer mechanism is arranged between the bottom plate and the bracket. Through the arrangement of the adjusting mechanism, when equipment moves to a proper position and needs to be fixed, a poke rod is rotated to drive an adjusting disc to rotate clockwise, so that a base in threaded connection with the adjusting disc can be driven to move downwards, and the base can drive a bottom pad fixedly mounted on the base to synchronously move downwards in the downward moving process; and when the base and the bottom pad move downwards, the height of the single wheel can be increased, and the equipment can be supported and fixed under the cooperation of the base and the bottom pad.

Description

TECHNICAL FIELD

[0001] The utility model relates to a caster technology field especially relates to a caster. BACKGROUND

[0002] In order to facilitate the movement of the equipment of greater weight, usually will set up the caster at the bottom of the equipment, however the caster in the prior art mostly all is bottom plate, support and single wheel composition, its single wheel lacks the height problem of adjusting, when not moving the equipment, single wheel cannot elevate and separate from the ground and lead to unable to support and fixed equipment. UTILITY MODEL CONTENTS

[0003] The utility model aims at overcoming the prior art's insufficient, provide a kind of caster, the caster has the advantage that single wheel height can be adjusted.

[0004] To solve the above technical problem, the utility model adopts the following technical scheme:

[0005] A kind of caster, the caster includes:

[0006] Bottom plate and support, the middle position of the bottom plate is fixedly installed with the extension column extending to the inside of support;

[0007] Single wheel, the single wheel is rotatably installed in the inside of support;

[0008] Wave disc, the wave disc is fixedly installed in the inside of support;

[0009] Adjusting mechanism, the adjusting mechanism is arranged in the inside of support, and adjusting mechanism is used to adjust the height of single wheel;

[0010] Buffer mechanism, the buffer mechanism is arranged between bottom plate and support, when the caster moves, the buffer mechanism is used to absorb vibration, improve the stability when the caster moves.

[0011] Preferably, the adjusting mechanism includes adjusting disc rotatably installed in the inside of support, adjusting rod fixedly installed at the bottom of adjusting disc, base screw connected with adjusting rod and bottom pad fixedly installed at the outside of base.

[0012] Further, the bottom pad is slidably installed in the inside of support by sliding assembly.

[0013] Further, the sliding assembly includes sliding groove opened in the outer surface of bottom pad and sliding rod fixedly installed in the inner wall of support, and sliding rod is matched with sliding groove.

[0014] Further, the bottom pad is slidably installed in the inside of support by the cooperation of sliding groove and sliding rod.

[0015] Further, one end of the extension column fixedly installed on the wave plate, the inside of the extension column is provided with a stepped groove, the middle of the adjusting disc is rotatably installed on the extension column.

[0016] Further, the buffer mechanism comprises a bearing cover fixedly installed on the inner top wall of the support, a lower bearing cover fixedly installed on the top of the support, and balls installed between the bearing cover and the wave plate and between the lower bearing cover and the bottom plate.

[0017] Further, the top of the wave plate and the bottom of the bottom plate are provided with ball grooves for the rolling of the balls.

[0018] Further, the outer surface of the adjusting disc is fixedly installed with a plurality of toggle levers, and the toggle levers are arranged in a ring array on the outer surface of the adjusting disc, and the support is provided with a notch for operating the toggle lever to rotate the adjusting disc.

[0019] Further, one of the toggle levers is sleeved with an extension rod, the inside of each toggle lever is provided with a spring cavity, a spring is installed in the spring cavity, one end of the spring is fixedly installed in the spring cavity, the other end of the spring is fixedly installed with a connecting plate, the connecting plate is slidably installed in the spring cavity, the end of the connecting plate away from the spring is fixedly installed with a limiting column, the extension rod is provided with a limiting hole matched with the limiting column, and when the extension rod is sleeved with the toggle lever, the limiting column penetrates through the toggle lever and extends into the limiting hole.

[0020] The beneficial effects of the present application are as follows:

[0021] The present application has the beneficial effects that: when the equipment is moved to a suitable position and needs to be fixed, rotating the toggle lever can drive the adjusting disc to rotate clockwise, which can drive the base connected with the adjusting disc to move downward, the base can drive the bottom pad fixedly installed thereon to move downward synchronously, the height of the single wheel can be raised during the movement of the base and the bottom pad, and the equipment can be supported and fixed under the cooperation of the base and the bottom pad. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is a three-dimensional schematic view of the present application.

[0024] Figure 2It is the bottom view schematic diagram of the utility model.

[0025] Figure 3 It is the top view schematic diagram of the utility model.

[0026] Figure 4 It is the utility model Figure 3 It is the section view schematic diagram of A-A in the utility model.

[0027] Figure 5 It is the top view schematic diagram of the adjusting disc of the utility model.

[0028] Figure 6 It is the partial section view structure schematic diagram of the adjusting disc of the second embodiment of the utility model.

[0029] Explanation of signs in the figure: 1, bottom plate; 2, support; 3, single wheel; 4, wave disc; 5, adjusting mechanism; 6, buffer mechanism; 101, extension column; 501, adjusting disc; 502, adjusting rod; 503, base; 504, bottom pad; 505, sliding slot; 506, sliding rod; 507, pushing rod; 508, extension rod; 509, spring; 510, connecting plate; 511, limiting column; 601, bearing cover; 602, lower bearing cover; 603, ball bearing. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] It should be understood that when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0032] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, unless otherwise clear from the context, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0033] It should be further understood that the term "and / or" used in the utility model specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0034] The specific embodiment is a caster, a structural schematic diagram of which is shown in Figures 1-6 .

[0035] Embodiment one

[0036] The caster comprises a bottom plate 1 and a support 2, a single wheel 3, a wave plate 4, an adjusting mechanism 5 and a buffer mechanism 6, the middle position of the bottom plate 1 is fixedly installed with an extension column 101 extending to the inside of the support 2, the single wheel 3 is rotatably installed in the inside of the support 2, the wave plate 4 is fixedly installed in the inside of the support 2, the adjusting mechanism 5 is arranged in the inside of the support 2, and the adjusting mechanism 5 is used for adjusting the height of the single wheel 3, the buffer mechanism 6 is arranged between the bottom plate 1 and the support 2, and the buffer mechanism 6 is used for absorbing vibration when the caster moves, thereby improving the stability when the caster moves.

[0037] The adjusting mechanism 5 comprises an adjusting disc 501 rotatably installed in the inside of the support 2, an adjusting rod 502 fixedly installed at the bottom of the adjusting disc 501, a base 503 threadedly connected with the adjusting rod 502, and a bottom pad 504 fixedly installed at the outside of the base 503;

[0038] One end of the extension column 101 extending to the inside of the support 2 is fixedly installed on the wave plate 4, a stepped groove is formed in the inside of the extension column 101, and the middle part of the adjusting disc 501 is rotatably installed on the extension column 101;

[0039] A plurality of pull rods 507 are fixedly installed on the outer surface of the adjusting disc 501, and the plurality of pull rods 507 are arranged in a ring array on the outer surface of the adjusting disc 501, and a notch is formed in the support 2 for operating the pull rod 507 to rotate the adjusting disc 501, so that the user can conveniently rotate the pull rod 507 and the adjusting disc 501;

[0040] The pull rod 507 is rotated to drive the adjusting disc 501 to rotate, which can drive the adjusting rod 502 to synchronously rotate, when the adjusting rod 502 rotates clockwise, the base 503 threadedly connected with the adjusting rod 502 can move downward, the base 503 can drive the bottom pad 504 fixedly installed on the base 503 to synchronously move downward in the process of moving downward, and the height of the single wheel 3 can be raised in the process of moving downward of the base 503 and the bottom pad 504;

[0041] Similarly, when the adjusting rod 502 rotates counterclockwise, the base 503 and the bottom pad 504 can move upward, and the height of the single wheel 3 can be lowered in the process of moving upward of the base 503 and the bottom pad 504;

[0042] Therefore, the adjusting mechanism 5 of the present application can freely adjust the height of the single wheel 3.

[0043] The bottom pad 504 is slidably installed in the interior of the support 2 through a sliding assembly, the sliding assembly comprises a sliding groove 505 formed on the outer surface of the bottom pad 504 and a sliding rod 506 fixedly installed on the inner wall of the support 2, and the sliding rod 506 is matched with the sliding groove 505, and the bottom pad 504 is slidably installed in the interior of the support 2 through the cooperation of the sliding groove 505 and the sliding rod 506;

[0044] Due to the cooperation of the sliding groove 505 and the sliding rod 506, the base 503 cannot be rotated synchronously with the adjusting rod 502 during the rotation of the adjusting rod 502, but the base 503 moves in the vertical direction during the rotation, and the cooperation of the sliding groove 505 and the sliding rod 506 can guide the movement of the base 503 and the bottom pad 504, so that the movement of the base 503 and the bottom pad 504 is more stable.

[0045] The buffer mechanism 6 comprises a bearing cover 601 fixedly installed on the top wall of the support 2, a lower bearing cover 602 fixedly installed on the top of the support 2, and a plurality of balls 603 installed between the bearing cover 601 and the wave plate 4 and between the lower bearing cover 602 and the bottom plate 1, and the top of the wave plate 4 and the bottom of the bottom plate 1 are provided with ball grooves for rolling of the balls 603;

[0046] When encountering bumps and vibrations during movement, the bearing cover 601, the wave plate 4 and the balls 603 cooperate with each other to effectively absorb the vibrations, improve the stability of the equipment, and have good buffering effect, so that the service life of the caster is prolonged. When an object with balls is subjected to external vibration, the balls will roll and generate friction. In this process, the vibration energy is converted into heat energy and sound energy, thereby reducing the transmission of vibration and effectively absorbing the vibration.

[0047] Embodiment two

[0048] The same as the embodiment one, the difference between the embodiment one and the embodiment two is that an extension rod 508 is sleeved on one of the lever rods 507 to facilitate the rotation of the adjusting disc 501, a spring cavity is formed in the interior of each lever rod 507, a spring 509 is installed in the interior of the spring cavity, one end of the spring 509 is fixedly installed in the interior of the spring cavity, a connecting plate 510 is fixedly installed on the other end of the spring 509, the connecting plate 510 is slidably installed in the interior of the spring cavity, a limiting column 511 is fixedly installed on the end of the connecting plate 510 away from the spring 509, and a limiting hole matched with the limiting column 511 is formed in the extension rod 508, and when the extension rod 508 is sleeved on the lever rod 507, the limiting column 511 penetrates through the lever rod 507 and extends into the limiting hole;

[0049] The extension rod 508 is sleeved on any one of the poking rods 507, and the extension rod 508 is a hollow structure, which facilitates the extension rod 508 to be sleeved on any one of the poking rods 507. First, the limiting column 511 is pressed to be pressed into the inside of the spring cavity, so that the extension rod 508 is pulled out of the extension and does not separate from the poking rod 507. At this time, the overall length of the poking rod 507 is increased under the action of the extension rod 508. In this way, the extension rod 508 can drive the poking rod 507 and the adjusting disc 501 to rotate only by rotating the extension rod 508, and the operation is convenient.

[0050] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A caster, characterized in that, The caster includes: The base plate (1) and the bracket (2) are provided, wherein an extension column (101) extending into the bracket (2) is fixedly installed at the middle position of the base plate (1); A single wheel (3) is rotatably mounted inside the bracket (2); Wave plate (4), which is fixedly installed inside the bracket (2); An adjustment mechanism (5) is provided inside the bracket (2) and is used to adjust the height of the single wheel (3); A buffer mechanism (6) is provided between the base plate (1) and the bracket (2). When the caster moves, the buffer mechanism (6) is used to absorb vibration and improve the stability of the caster when it moves.

2. The caster according to claim 1, characterized in that, The adjustment mechanism (5) includes an adjustment plate (501) rotatably installed inside the bracket (2), an adjustment rod (502) fixedly installed at the bottom of the adjustment plate (501), a base (503) threadedly connected to the adjustment rod (502), and a base pad (504) fixedly installed outside the base (503).

3. The caster according to claim 2, characterized in that, The base pad (504) is slidably installed inside the bracket (2) via a sliding assembly.

4. The caster according to claim 3, characterized in that, The sliding assembly includes a groove (505) formed on the outer surface of the base pad (504) and a sliding rod (506) fixedly installed on the inner wall of the bracket (2), and the sliding rod (506) is adapted to the groove (505).

5. The caster according to claim 4, characterized in that, The bottom pad (504) is slidably installed inside the bracket (2) through the cooperation of the sliding groove (505) and the sliding rod (506).

6. The caster according to claim 2, characterized in that, One end of the extension column (101) extending into the bracket (2) is fixedly installed on the wave plate (4). The extension column (101) has a stepped groove inside. The middle part of the adjustment plate (501) is rotatably installed on the extension column (101).

7. The caster according to claim 6, characterized in that, The buffer mechanism (6) includes a bearing sleeve cover (601) fixedly installed on the inner top wall of the bracket (2), a lower bearing sleeve cover (602) fixedly installed on the top of the bracket (2), and balls (603) installed between the bearing sleeve cover (601) and the wave plate (4) and between the lower bearing sleeve cover (602) and the base plate (1).

8. The caster according to claim 7, characterized in that, The top of the wave plate (4) and the bottom of the base plate (1) are provided with ball grooves for the rolling of the balls (603).

9. The caster according to claim 2, characterized in that, Multiple levers (507) are fixedly installed on the outer surface of the adjustment disk (501), and the multiple levers (507) are arranged in a ring array on the outer surface of the adjustment disk (501). The bracket (2) has a notch for operating the levers (507) to rotate the adjustment disk (501).

10. The caster according to claim 9, characterized in that, An extension rod (508) is fitted onto one of the actuating rods (507). Each actuating rod (507) has a spring cavity inside, and a spring (509) is installed inside the spring cavity. One end of the spring (509) is fixedly installed inside the spring cavity, and a connecting plate (510) is fixedly installed on the other end of the spring (509). The connecting plate (510) is slidably installed inside the spring cavity. A limiting post (511) is fixedly installed on the end of the connecting plate (510) away from the spring (509). A limiting hole that cooperates with the limiting post (511) is opened on the extension rod (508). When the extension rod (508) is fitted onto the actuating rod (507), the limiting post (511) passes through the actuating rod (507) and extends into the limiting hole.

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