Foldable trolley

Abstract

The utility model relates to the technical field of trolleys and discloses a foldable trolley which comprises a supporting plate, a plurality of moving wheels are fixedly installed at the bottom of the supporting plate, a locking assembly is arranged at the bottom of the supporting plate, a pushing assembly is arranged at the top of the supporting plate and comprises a pushing handle and a rotating shaft, and the pushing handle drives the supporting plate to move through the moving wheels. The locking assembly comprises a rotating rod, locking blocks, a sliding groove and a guide rod, when the rotating rod rotates, the locking blocks are driven to slide on the guide rod through the sliding groove and the guide rod and limit the push handle after moving by a distance, and the locking blocks are in sliding fit with the sliding groove when moving; and the locking block is shrunk in the sliding groove, so that the unlocking mode is simple, parts can be protected, the equipment is prevented from being damaged by articles during use, the service life of the equipment is prolonged, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of trolleys, and particularly relates to a foldable trolley. Background Technique

[0002] The flatbed trolley is a convenient and flexible transportation tool, which is applicable to fields such as logistics, shopping malls, and construction sites. It can greatly increase the weight and quantity of goods that can be carried manually at one time, thereby improving transportation efficiency, in logistics, shopping malls, or construction sites, etc.

[0003] Chinese Patent CN219115501 U discloses a foldable trolley, which includes a bottom plate. The bottom plate includes a left bottom plate and a right bottom plate. The left bottom plate and the right bottom plate are hinged to each other. A fixed box is fixedly installed at the lower end of the right bottom plate. A support device is arranged in the fixed box. The support device includes a left slider, a left slide bar, a left telescopic spring, a right slider, a right slide bar, and a right telescopic spring. The left slider is slidably connected in the fixed box. The left end of the left slider is fixedly connected to the left slide bar. The left end of the left slide bar penetrates through the fixed box and is slidably connected to the fixed box. The left telescopic spring is sleeved on the outer wall of the left slide bar.

[0004] For this utility model and the foldable trolleys in the prior art, their folding methods are cumbersome, requiring a lot of effort and time from staff, with a long operation time and great limitations. At the same time, the folding mechanism is not protected during use and folding, resulting in easy damage to parts, so that the folding function cannot be used for a long time, affecting the service life of the equipment. Content of the Utility Model

[0005] The utility model provides a foldable trolley to solve the problems raised in the above background technique.

[0006] To solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A foldable trolley, comprising a support plate, wherein a plurality of moving wheels are fixedly installed at the bottom of the support plate, and a locking assembly is provided. A pushing assembly is arranged on the top of the support plate. The pushing assembly includes a push handle and a rotating shaft. The push handle drives the support plate to move through the moving wheels, and the rotating shaft can fold and retract the push handle. The locking assembly includes a rotating rod, a locking block, a sliding groove and a guiding rod. When the rotating rod rotates, it drives a plurality of the locking blocks to slide on the guiding rod through the sliding groove and the guiding rod, and limits the push handle after moving a certain distance. The locking block slides in cooperation with the sliding groove when moving; The locking assembly further includes a mounting bracket, a screw rod, a slider and a connecting plate. The sliding groove is slidably matched with the inner wall of the mounting bracket. The screw rod is rotatably connected to the bottom of the mounting bracket. The slider is sleeved on the screw rod, and the outer wall thereof is attached to the mounting bracket. The slider is threadedly connected with the screw rod and is slidably matched with the mounting bracket. Two ends of the connecting plate are respectively fixedly connected to the sliding groove and the slider. The locking block is slidably matched with the inner wall of the sliding groove. The guiding rod is fixedly connected to the top of the support plate. The locking block is slidably sleeved on the guiding rod; The locking assembly further includes a protective housing, a handle and a belt. The protective housing is fixedly connected to the bottom of the support plate. A plurality of the mounting brackets are all fixedly connected to the top of the protective housing. The rotating rod is rotatably connected to the protective housing. The handle is fixedly installed at one end of the rotating rod. A plurality of the belts are all sleeved on the screw rod and the rotating rod. When the rotating rod rotates, it drives a plurality of the locking blocks to move simultaneously through the plurality of the belts; The locking assembly further includes a top plate. The top plate is fixedly connected to the inner wall of the mounting bracket. The other end of the guiding rod is fixedly connected to the top plate.

[0008] Preferably, the pushing assembly further includes a mounting plate and a flange. A plurality of the mounting plates are all fixedly connected to the top of the support plate. The flange is flange-connected to the push handle and the mounting plate, and the flange can limit the push handle.

[0009] Preferably, a protective plate is threadedly connected to the outer wall of the push handle through a bolt.

[0010] Compared with the prior art, the advantages of the present utility model are as follows:

[0011] 1. The present utility model provides a foldable trolley. Through the mutual cooperation among the rotating rod, the locking block, the sliding groove, the guiding rod, the mounting bracket, the screw rod, the slider and the connecting plate, the push handle can be quickly limited, the operation time can be reduced, the folding and working efficiency can be improved, and at the same time, the structure is simple, the operation is convenient, and the applicability is strong.

[0012] 2. The present utility model provides a foldable trolley. Through the mutual cooperation among the rotating rod, the locking block, the sliding groove, the guiding rod, the mounting bracket, the screw rod, the slider, the connecting plate, the protection plate and the top plate, it can protect the parts during the normal use of the equipment, reduce the damage probability of the locking block, and thus improve the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0014] Figure 2 is a cross-sectional structural schematic diagram of the present utility model;

[0015] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0016] Figure 4 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 5 is a three-dimensional schematic diagram of the local structure in the present utility model.

[0018] In the figure:

[0019] 1. Support plate; 2. Pushing assembly; 201. Push handle; 202. Rotating shaft; 203. Mounting plate; 204. Flange; 3. Moving wheel; 4. Locking assembly; 401. Rotating rod; 402. Locking block; 403. Sliding groove; 404. Guiding rod; 405. Mounting bracket; 406. Screw rod; 407. Slider; 408. Protection housing; 409. Grip; 410. Belt; 411. Connecting plate; 412. Top plate; 5. Protection plate; 6. Bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0021] Such as Figures 1-5As shown, the utility model provides a foldable trolley, including a support plate 1, a plurality of moving wheels 3 are fixedly installed at the bottom of the support plate 1, and a locking assembly 4 is provided, a pushing assembly 2 is provided on the top of the support plate 1, the pushing assembly 2 includes a push handle 201 and a rotating shaft 202, the push handle 201 drives the support plate 1 to move through the moving wheel 3, the rotating shaft 202 can fold the push handle 201, the locking assembly 4 includes a rotating rod 401, a locking block 402, a slide groove 403 and a guide rod 404, when the rotating rod 401 rotates, the plurality of locking blocks 402 are driven to slide on the guide rod 404 through the slide groove 403 and the guide rod 404, and the push handle 201 is limited after moving a distance, and the locking block 402 slides with the slide groove 403 when moving.

[0022] When the push handle 201 needs to be folded, the staff first rotates and presses the push handle 201 to make the push handle 201 rotate on the rotating shaft 202. When the push handle 201 rotates to a certain extent, the push handle 201 fits with the top of the support plate 1. At this time, the push handle 201 completes the initial folding work. Then the staff erects the support plate 1 and rotates the rotating rod 401. The rotation of the rotating rod 401 drives the plurality of slide grooves 403 to move vertically downward. Since the locking block 402 is limited by the guide rod 404 and slides with the slide groove 403, At this time, the locking block 402 can move vertically downward and horizontally under the action of the guide rod 404 and the slide groove 403, so that the locking block 402 can gradually extend out of the slide groove 403 during the movement. After moving a certain distance, the locking block 402 contacts the push handle 201 and limits the push handle 201. At this point, the folding work of the push handle 201 is completed. By allowing a plurality of locking blocks 402 to limit the push handle 201 together, not only the folding efficiency can be improved, but also the stability can be improved, and the practicability is strong.

[0023] When carrying items and needing to unfold the equipment, the staff first places the support plate 1 upright, and then rotates a number of rotating rods 401. After the rotating rods 401 rotate, they drive the locking block 402 to move in the opposite direction through the slide groove 403 and the guide rod 404, and make the locking block 402 shrink in the slide groove 403. Not only is the unlocking method simple, but it can also protect the parts to prevent them from being damaged by items when the equipment is in use, thereby extending its service life and improving the service life of the equipment.

[0024] In one embodiment, the locking assembly 4 further includes a mounting bracket 405, a screw 406, a slider 407, and a connecting plate 411. The chute 403 is slidably engaged with the inner wall of the mounting bracket 405. The screw 406 is rotatably connected to the bottom of the mounting bracket 405. The slider 407 is sleeved on the screw 406, and its outer wall is in contact with the mounting bracket 405. The slider 407 is threadedly connected to the screw 406 and is slidably engaged with the mounting bracket 405. The two ends of the connecting plate 411 are respectively fixedly connected to the chute 403 and the slider 407. The locking block 402 is slidably engaged with the inner wall of the chute 403. The guide rod 404 is fixedly connected to the top of the support plate 1. The locking block 402 is slidably sleeved on the guide rod 404.

[0025] When the rotating rod 401 rotates, it drives a plurality of screws 406 to rotate. After the screws 406 rotate, they can be threadedly engaged with the slider 407. Under the limiting action of the mounting bracket 405, the slider 407 can move vertically downward within the mounting bracket 405. When the slider 407 moves, it drives the connecting plate 411 to move. When the connecting plate 411 moves, it drives the chute 403 to move. Since the locking block 402 is limited by the guide rod 404 and is slidably engaged with the chute 403, at this time, the locking block 402 can move vertically downward and horizontally while being under the action of the guide rod 404 and the chute 403. After the locking block 402 moves a certain distance, it contacts the push handle 201 and limits the push handle 201. Thus, the folding work of the push handle 201 is completed. By making a plurality of locking blocks 402 limit the push handle 201 together, the folding efficiency is improved.

[0026] In one embodiment, the locking assembly 4 further includes a protective housing 408, a grip 409, and a belt 410. The protective housing 408 is fixedly connected to the bottom of the support plate 1. A plurality of mounting brackets 405 are all fixedly connected to the top of the protective housing 408. The rotating rod 401 is rotatably connected to the protective housing 408. The grip 409 is fixedly installed at one end of the rotating rod 401. A plurality of belts 410 are all sleeved on the screws 406 and the rotating rod 401. When the rotating rod 401 rotates, it drives a plurality of locking blocks 402 to move simultaneously through a plurality of belts 410.

[0027] The protective housing 408 can limit the rotating rod 401 and a plurality of mounting brackets 405, improving the stability of the mounting bracket 405. At the same time, the grip 409 facilitates the staff to rotate the rotating rod 401, improving the applicability. At the same time, after the rotating rod 401 rotates, the rotating rod 401 drives a plurality of screws 406 to rotate through a plurality of belts 410, saving the folding time and improving the work efficiency.

[0028] In one embodiment, the locking assembly 4 further includes a top plate 412. The top plate 412 is fixedly connected to the inner wall of the mounting bracket 405. The other end of the guide rod 404 is fixedly connected to the top plate 412.

[0029] The top plate 412 is used to limit the guide rod 404.

[0030] In one embodiment, the pushing assembly 2 further includes a mounting plate 203 and a flange 204 . Several mounting plates 203 are fixedly connected to the top of the support plate 1 . The flange 204 is flange-connected to the push handle 201 and the mounting plate 203 . The flange 204 can limit the push handle 201 .

[0031] By installing and removing the flange 204, the rotating shaft 202 can be unlocked, thereby achieving the effect of initially unlocking the rotating shaft 202 and the push handle 201, and the applicability is strong.

[0032] In one embodiment, the outer wall of the push handle 201 is threadedly connected with the protective plate 5 via bolts 6 .

[0033] The protective plate 5 can prevent objects from falling off during movement, thereby improving the protective effect.

[0034] The following is a detailed description of the working principle of the foldable trolley:

[0035] When the push handle 201 needs to be folded, the staff first rotates the flanges 204 and removes the flanges 204 so that the flanges 204 no longer limit the push handle 201 and the shaft 202. At this time, the staff presses the push handle 201 to make the push handle 201 rotate on the shaft 202. When the push handle 201 rotates to a certain extent, the push handle 201 fits with the top of the support plate 1. At this time, the push handle 201 completes the initial folding work. Then the staff erects the support plate 1 and rotates the rotating rod 401 through the handle 409. The rotation of the rotating rod 401 drives the rotation of the screw rod 406 through the belts 410. After the screw 406 is rotated, it can cooperate with the slider 407 threadedly. The slider 407 can be installed under the limiting effect of the mounting frame 405. When the slider 407 moves, the connecting plate 411 moves, and when the connecting plate 411 moves, the slide groove 403 moves. Since the locking block 402 is limited by the guide rod 404 and slidably cooperates with the slide groove 403, the locking block 402 can move vertically downward and horizontally under the action of the guide rod 404 and the slide groove 403, so that the locking block 402 can gradually protrude from the slide groove 403 during movement. After moving a certain distance, the locking block 402 contacts the push handle 201 and limits the push handle 201. At this point, the folding work of the push handle 201 is completed. By limiting the push handle 201 together with a plurality of locking blocks 402, not only the folding efficiency can be improved, but also the stability can be improved.

[0036] When carrying an item and the device needs to be deployed, the staff first place the support plate 1 vertically, and then rotate several rotating rods 401. After the rotation of the rotating rods 401, through the belt 410, screw rod 406, mounting bracket 405, slider 407, connecting plate 411, chute 403 and guide rod 404, the locking block 402 is driven to move in the reverse direction and the locking block 402 contracts in the chute 403. The unlocking method is not only simple, but also can protect the parts from being damaged by the item during the use of the device, extend its service life, and improve the service life of the device.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality of" is two or more unless otherwise specifically defined.

[0039] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "attachment", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection, an electrical connection, or a communication connection; it may be a direct connection, or an indirect connection through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to terms such as "one solution", "some solutions", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the solution or example are included in at least one solution or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same solution or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more solutions or examples.

Claims

1. A foldable trolley, comprising a support plate (1), characterized in that: A plurality of moving wheels (3) are fixedly mounted on the bottom of the support plate (1), and a locking assembly (4) is provided. A pushing assembly (2) is provided on the top of the support plate (1). The pushing assembly (2) includes a push handle (201) and a rotating shaft (202). The push handle (201) drives the support plate (1) to move through the moving wheel (3). The rotating shaft (202) can fold and retract the push handle (201). The locking assembly (4) includes a rotating rod (401), a locking block (402), a slide groove (403) and a guide rod (404). When the rotating rod (401) rotates, the plurality of locking blocks (402) are driven to slide on the guide rod (404) through the slide groove (403) and the guide rod (404), and the push handle (201) is limited after moving a certain distance. When the locking block (402) moves, it slides and cooperates with the slide groove (403). The locking assembly (4) further comprises a mounting frame (405), a screw rod (406), a slider (407) and a connecting plate (411); the slide groove (403) is slidably matched with the inner wall of the mounting frame (405); the screw rod (406) is rotatably connected with the bottom of the mounting frame (405); the slider (407) is sleeved on the screw rod (406) and its outer wall is in contact with the mounting frame (405); the slider (407) is threadedly connected with the screw rod (406) and is slidably matched with the mounting frame (405); the two ends of the connecting plate (411) are respectively fixedly connected with the slide groove (403) and the slider (407); the locking block (402) is slidably matched with the inner wall of the slide groove (403); the guide rod (404) is fixedly connected with the top of the support plate (1); and the locking block (402) is slidably sleeved on the guide rod (404); The locking assembly (4) further comprises a protective shell (408), a handle (409) and a belt (410); the protective shell (408) is fixedly connected to the bottom of the support plate (1); a plurality of mounting frames (405) are fixedly connected to the top of the protective shell (408); the rotating rod (401) is rotatably connected to the protective shell (408); the handle (409) is fixedly mounted on one end of the rotating rod (401); a plurality of belts (410) are sleeved on the screw rod (406) and the rotating rod (401); when the rotating rod (401) rotates, the plurality of locking blocks (402) are driven to move simultaneously through the plurality of belts (410); The locking assembly (4) further comprises a top plate (412), wherein the top plate (412) is fixedly connected to the inner wall of the mounting frame (405), and the other end of the guide rod (404) is fixedly connected to the top plate (412).

2. A foldable trolley according to claim 1, characterized in that: The pushing assembly (2) further comprises a mounting plate (203) and a flange (204); a plurality of the mounting plates (203) are fixedly connected to the top of the support plate (1); the flange (204) is flange-connected to the push handle (201) and the mounting plate (203); and the flange (204) is capable of limiting the position of the push handle (201).

3. A foldable trolley according to claim 1, characterized in that: The outer wall of the push handle (201) is threadedly connected to a protective plate (5) via bolts (6).

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