Shock-resistant trundle support and trundle

Abstract

The utility model provides an anti-impact trundle support and a trundle. Belongs to the field of casters. According to the technical key points, the device comprises a connecting mechanism, the connecting mechanism comprises a wheel carrier, a connecting table is fixedly connected to the top of the wheel carrier, a sliding hole is formed in the connecting table, a matched sliding column is slidably connected to the interior of the sliding hole, and a plurality of guide strips are fixedly connected to the outer wall of the sliding column in an annular array; a plurality of guide grooves matched with the guide strips are formed in the inner wall of the sliding hole in an annular array mode. The buffering mechanism comprises a rotating column rotationally connected to the interior of the sliding column, a buffering spring is fixedly connected between the rotating column and the connecting table, and a connecting plate is fixedly connected to the top of the rotating column; the utility model aims to provide an anti-impact trundle support and a trundle. The anti-impact performance and the service life of the whole trundle support are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of casters, in particular to an anti-impact caster support and caster. BACKGROUND

[0002] Casters are a general term, including movable casters, fixed casters and movable casters with brakes. Movable casters are also called universal wheels, which allow 360-degree rotation; fixed casters, also known as directional casters, do not have a rotating structure and cannot rotate. Usually, the two types of casters are used together, such as the structure of a handcart, which has two directional wheels in front and two universal wheels near the push handle at the back, while the caster support is a support for supporting the rollers.

[0003] The current caster support, as described in the patent with publication number CN221233373U, includes a movable bottom plate, an upper movable wave plate connected horizontally to the movable bottom plate through a ring of upper steel balls, a lower movable wave plate connected horizontally to the upper movable wave plate through a ring of lower steel balls, a rivet that rivets the movable bottom plate, upper movable wave plate, and lower movable wave plate together in the vertical direction, and a pair of fixed support edge pieces. The fixed support edge pieces are vertical and in the shape of a sheet. The upper parts of the pair of fixed support edge pieces are fixed to the sides of the upper movable wave plate and are parallel to each other. Wheel mounting shaft holes are provided on the pair of fixed support edge pieces, with their axes on the same plane as the centerline of the rivet.

[0004] In view of the above-mentioned related technology, the inventors believe that because the bottom plate and the lower movable wave plate are directly fixed by the rivet, and there is no corresponding buffer structure at the connection between the bottom plate, lower movable wave plate, and rivet, the connection between the bottom plate, lower movable wave plate, and rivet is prone to loosening after the entire caster support has been subjected to impact for a long time, resulting in a reduction in the service life of the entire caster support. UTILITY MODEL CONTENTS

[0005] The purpose of the utility model is to provide an anti-impact caster support and caster to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0007] An anti-impact caster support includes

[0008] A connecting mechanism includes a wheel frame, the top of the wheel frame is fixedly connected with a connecting table, a sliding hole is formed in the inside of the connecting table, a sliding column that is adapted is slidably connected in the inside of the sliding hole, a plurality of guide strips are fixedly connected in a ring array on the outer wall of the sliding column, a plurality of guide grooves that are adapted to the guide strips are formed in a ring array on the inner wall of the sliding hole;

[0009] The buffering mechanism comprises a rotating column rotatably connected to the inside of the sliding column, buffering springs fixedly connected between the rotating column and the connecting table, and a connecting plate fixedly connected to the top of the rotating column.

[0010] As a further scheme of the present utility model: the top side of the wheel frame is fixedly connected with a reinforcing rib plate, and the reinforcing rib plate is fixedly connected with the connecting table.

[0011] As a further scheme of the present utility model: the bottom of the sliding column is provided with a bottom plate, a connecting bolt penetrates through the inside of the bottom plate, the connecting bolt penetrates through the sliding column, the connecting bolt is threadedly connected with the rotating column, the bottom wall and the inner bottom wall of the sliding column are both provided with ball grooves, and a plurality of balls are uniformly arranged in the inside of the two ball grooves.

[0012] As a further scheme of the present utility model: the connecting table and the connecting plate are fixedly connected with a rubber bellows, and the buffering spring is sleeved in the inside of the rubber bellows.

[0013] As a further scheme of the present utility model: the bottom of the connecting table is provided with an air hole, and the air hole is in communication with the rubber bellows.

[0014] The anti-impact trolley comprises the anti-impact trolley support and

[0015] The moving mechanism comprises a roller detachably connected to the inside of the wheel frame.

[0016] As a further scheme of the present utility model: the inside of the roller is fixedly connected with a bearing, a connecting shaft penetrates through the inside of the bearing, the connecting shaft penetrates through the wheel frame, and a nut is fixedly and threadedly connected to one side of the outer wall of the connecting shaft.

[0017] Compared with the prior art, the present utility model has the beneficial effects that:

[0018] After the above structure is adopted, the sliding column, the rotating column, the guide strip and the buffering spring are cooperated with each other, so that the connecting table and the wheel frame can move up and down when the trolley is impacted during use, the connecting table can slide up and down on the outside of the sliding column when the connecting table moves up and down, the buffering spring is stretched and contracted when the connecting table moves up and down, the elastic effect of the buffering spring can buffer the impact on the trolley support, and the anti-impact performance and service life of the trolley support are effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present utility model will be further and specifically explained in connection with the embodiments in the drawings, but does not constitute any limitation on the present utility model.

[0020] The present utility model will be further and specifically explained in connection with the embodiments in the drawings, but does not constitute any limitation on the present utility model.Figure 1 It is a partial structure sectional view of an anti-impact caster support and caster.

[0021] Figure 2 It is a sectional view of another perspective of a partial structure of an anti-impact caster support and caster.

[0022] Figure 3 It is a partial structure sectional view of an anti-impact caster support and caster Figure 2 .

[0023] Figure 4 It is a partial structure sectional view of an anti-impact caster support and caster Figure 2 .

[0024] In the figure: 1, connecting mechanism; 101, wheel support; 102, connecting table; 103, sliding hole; 104, sliding column; 105, guide groove; 106, guide bar; 107, reinforcing rib plate; 2, buffer mechanism; 201, rotating column; 202, connecting bolt; 203, bottom plate; 204, ball groove; 205, ball; 206, buffer spring; 207, rubber bellows; 208, air hole; 209, connecting plate; 3, moving mechanism; 301, connecting shaft; 302, roller; 303, bearing; 304, nut. DETAILED DESCRIPTION

[0025] The technical solution of the patent will be further described in detail in combination with specific embodiments.

[0026] Please refer to Figures 1-4 , an anti-impact caster support, comprising a connecting mechanism 1, the connecting mechanism 1 comprising a wheel support 101, the top of the wheel support 101 being fixedly connected with a connecting table 102, the wheel support 101 being arranged to provide support for the connecting table 102. The top of the wheel support 101 is fixedly connected with a reinforcing rib plate 107, the reinforcing rib plate 107 being fixedly connected with the connecting table 102, the reinforcing rib plate 107 being arranged to further connect and fix the connecting table 102 with the wheel support 101, thereby improving the connection stability of the connecting table 102 with the wheel support 101. The connecting table 102 is internally provided with a sliding hole 103, the sliding hole 103 being internally slidably connected with a sliding column 104 that is adapted thereto, the sliding hole 103 being arranged to accommodate the sliding column 104.

[0027] The outer wall of the sliding column 104 is fixedly connected with a plurality of guide strips 106 in a ring array, and the inner wall of the sliding hole 103 is provided with a plurality of guide grooves 105 matched with the guide strips 106 in a ring array. The arrangement of the guide grooves 105 and the guide strips 106 can guide the up-and-down sliding of the sliding column 104, and can drive the guide strips 106 and the sliding column 104 to rotate synchronously when the connecting table 102 rotates. The buffer mechanism 2 comprises a rotating column 201 rotatably connected to the inside of the sliding column 104. The arrangement of the rotating column 201 facilitates the rotation of the sliding column 104, thereby facilitating the steering of the entire caster.

[0028] A bottom plate 203 is arranged below the sliding column 104, and a connecting bolt 202 penetrates through the inside of the bottom plate 203. The connecting bolt 202 penetrates through the sliding column 104 and is threadedly connected with the rotating column 201. The connecting bolt 202 is arranged to fix the bottom plate 203 and the rotating column 201. The bottom wall and the inner bottom wall of the sliding column 104 are provided with ball grooves 204. A plurality of balls 205 are uniformly arranged in the ball grooves 204. The arrangement of the ball grooves 204 serves to limit the balls 205, so that the balls 205 can roll in the ball grooves 204 when the sliding column 104 rotates, thereby effectively reducing the friction between the sliding column 104 and the rotating column 201.

[0029] The top of the rotating column 201 is fixedly connected with a connecting plate 209. The rotating column 201 and the connecting table 102 are fixedly connected with a buffer spring 206. The arrangement of the buffer spring 206 serves to connect the connecting table 102 and the sliding column 104. The elasticity of the buffer spring 206 can buffer the impact received by the entire caster support. The connecting table 102 and the connecting plate 209 are fixedly connected with a rubber bellows 207. The buffer spring 206 is sleeved in the rubber bellows 207. The arrangement of the rubber bellows 207 can shield the gap between the sliding column 104 and the connecting table 102, thereby reducing the probability of dust and sundries falling between the sliding column 104 and the connecting table 102. The bottom of the connecting table 102 is provided with an air hole 208. The air hole 208 is in communication with the rubber bellows 207. The arrangement of the air hole 208 serves to supply or discharge air into or out of the inside of the rubber bellows 207 when the rubber bellows 207 expands or contracts.

[0030] The anti-impact caster comprises an anti-impact caster support and a moving mechanism 3, wherein the moving mechanism 3 comprises a roller 302 detachably connected to the inside of the wheel frame 101, and a bearing 303 is arranged to facilitate the movement of the whole caster. The inside of the roller 302 is fixedly connected with the bearing 303, and the roller 302 is arranged to facilitate the rolling of the roller 302. The inside of the bearing 303 is penetrated with a connecting shaft 301, the connecting shaft 301 penetrates the wheel frame 101, and the outer wall of the connecting shaft 301 is fixedly and threadedly connected with a nut 304 on one side, and the connecting shaft 301 and the nut 304 are arranged to connect the bearing 303 with the wheel frame 101, and facilitate the subsequent dismounting and replacement of the bearing 303 and the roller 302.

[0031] In use, when encountering a bumpy road, the sliding column 104 can slide up and down in the inside of the connecting table 102, thereby driving the buffer spring 206 to stretch and contract, so that the elastic effect of the guide strip 106 can buffer the impact received, thereby improving the anti-impact performance of the whole caster, and further improving the service life of the whole caster. When the caster turns, the wheel frame 101 and the connecting table 102 turn, the connecting table 102 can drive the guide strip 106 and the sliding column 104 to turn when turning, and each group of the rolling balls 205 can roll when the sliding column 104 turns, thereby reducing the friction between the sliding column 104 and the rotating column 201, and thereby making the turning of the whole caster more smooth.

[0032] The above-mentioned embodiments are the preferred embodiments of the present application, which are only used to facilitate the description of the present application and do not limit the present application in any form. Any person skilled in the art can make partial changes or modifications to the equivalent embodiments within the scope of the technical features of the present application without departing from the technical features of the present application, and the changes or modifications still belong to the scope of the technical features of the present application.

Claims

1. An impact-resistant caster bracket, characterized in that, The utility model provides an anti -impact trundle support and mobile mechanism (3) that including the anti -impact trundle support of any one of claims 1-5, the mobile mechanism (3) includes the gyro wheel (302) that can be dismantled and is connected in the wheel frame (101) inside. The connecting mechanism (1) includes a wheel frame (101), the top of the wheel frame (101) is fixedly connected with a connecting table (102), the inside of the connecting table (102) is provided with a sliding hole (103), the sliding hole (103) is slidably connected with a matching sliding column (104), the outer wall of the sliding column (104) is fixedly connected with a plurality of guide strips (106) in annular array, and the inner wall of the sliding hole (103) is provided with a plurality of guide grooves (105) in annular array, matched with the guide strips (106). The buffer mechanism (2) includes a rotating column (201) rotatably connected to the inside of the sliding column (104), and a buffer spring (206) fixedly connected between the rotating column (201) and the connecting table (102).

2. An impact absorbing caster mount according to claim 1, wherein, The top of the wheel frame (101) is fixedly connected with a reinforcing rib plate (107), and the reinforcing rib plate (107) is fixedly connected with the connecting table (102).

3. An impact absorbing caster mount according to claim 1, wherein, The bottom of the sliding column (104) is provided with a bottom plate (203), the inside of the bottom plate (203) penetrates a connecting bolt (202), the connecting bolt (202) penetrates the sliding column (104), the connecting bolt (202) is threadedly connected with the rotating column (201), the bottom wall and the inner bottom wall of the sliding column (104) are provided with ball grooves (204), and a plurality of balls (205) are uniformly arranged in the inside of the two groups of ball grooves (204).

4. An impact wheel support according to claim 1, wherein, The connecting table (102) and the connecting plate (209) are fixedly connected with a rubber bellows (207), and the buffer spring (206) is sleeved in the inside of the rubber bellows (207).

5. An impact wheel support according to claim 4, wherein, The bottom of the connecting table (102) is provided with an air hole (208) in communication with the rubber bellows (207).

6. An impact resistant caster characterized by, The connecting table (102) and the connecting plate (209) are fixedly connected with a rubber bellows (207), and the buffer spring (206) is sleeved in the inside of the rubber bellows (207).

7. An impact absorbing caster wheel according to claim 6, wherein The bottom of the connecting table (102) is provided with an air hole (208) in communication with the rubber bellows (207). The utility model provides an anti -impact trundle support and mobile mechanism (3) that including the anti -impact trundle support of any one of claims 1-5, the mobile mechanism (3) includes the gyro wheel (302) that can be dismantled and is connected in the wheel frame (101) inside. The inside of the gyro wheel (302) is fixedly connected with a bearing (303), the inside of the bearing (303) penetrates a connecting shaft (301), the connecting shaft (301) penetrates the wheel frame (101), and one side of the outer wall of the connecting shaft (301) is fixedly and threadedly connected with a nut (304).

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