Portable folding trolley

Abstract

The utility model discloses a portable folding trolley, and relates to the technical field of trolleys. Comprising a first mounting frame, a second mounting frame and connecting frames, first fixing plates are fixed to the two sides and the ends, away from each other, of the first mounting frame and the second mounting frame correspondingly, telescopic blocking pieces are rotationally connected to the top ends of the first fixing plates, and connecting plates are arranged above the first mounting frame and the second mounting frame correspondingly; the top end of the telescopic blocking piece is rotationally connected with the bottom end of the connecting plate, and lifting mechanisms are arranged on the two sides of the first mounting frame and the two sides of the second mounting frame correspondingly. Compared with the prior art, a first rotating shaft is driven to rotate, the first rotating shaft rotates to drive a first driving gear to rotate, the first driving gear rotates to drive a first driven gear to rotate, the first driven gear rotates to drive a first lead screw to rotate, and the first lead screw rotates to drive a movable sleeve to move, so that a connecting plate moves; and therefore, the telescopic blocking piece is adjusted according to the height of the goods.

Description

Technical Field

[0001] The utility model relates to the technical field of trolleys, in particular to a portable folding trolley. Background Art

[0002] The trolley is widely used in production and life because it is low in cost, simple to maintain, easy to operate, light in weight, can work in places where motor vehicles are inconvenient to use, and is very convenient for carrying light items over short distances. The existing portable folding trolley (Announcement No.: CN212890521U) has the following disadvantages in use:

[0003] During use, the goods are loaded through the frame body, and the goods are limited by the first stop frame during transportation. However, when the frame body collides during movement, the goods may move out from both sides of the frame body, which may cause the goods to be lost or roll off, causing damage to the goods. For this reason, this patent proposes a portable folding trolley. Utility Model Content

[0004] The purpose of the utility model is to provide a portable folding trolley to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a portable folding trolley, comprising a first mounting frame, a second mounting frame and a connecting frame, wherein first fixing plates are fixed on both sides and one end away from each other of the first mounting frame and the second mounting frame, a telescopic stopper is rotatably connected to the top of the first fixing plate, a connecting plate is arranged above the first mounting frame and the second mounting frame, the top of the telescopic stopper is rotatably connected to the bottom end of the connecting plate, a lifting mechanism is arranged on both sides of the first mounting frame and the second mounting frame, the lifting mechanism comprises a first fixing frame fixed to one side of the bottom of the first mounting frame and the second mounting frame, a second fixing frame is fixed to the other side of the bottom of the first mounting frame and the second mounting frame, a first rotating shaft is rotatably connected between the first fixing frame and the second fixing frame at the bottom of the first mounting frame and between the first fixing frame and the second fixing frame at the bottom of the second mounting frame, and a first driving gear is fixed to the outer walls of both ends of the first rotating shaft.

[0006] The lifting mechanism also includes a first screw rod rotatably connected to the inner walls of the top ends of the first fixed frame and the second fixed frame respectively, a first driven gear is fixed to the bottom end of the first screw rod, the first driven gear is meshed with the first driving gear, a movable sleeve is screwed on the outer wall of the first screw rod, and the movable sleeve is fixed to the connecting plate.

[0007] Fixed blocks are fixed on both sides of the ends of the first mounting frame and the second mounting frame that are close to each other, and connecting pieces corresponding to the fixed blocks are installed at both ends of the connecting frame. The fixed blocks are rotatably connected to the connecting pieces, and a slot is opened at one end of the fixed block close to the connecting frame.

[0008] A fixing mechanism is arranged between the inner walls on both sides of the connecting frame, the fixing mechanism includes a second rotating shaft rotatably connected between the inner walls on both sides of the connecting frame, second driving gears are fixed at both ends of the second rotating shaft, the inner walls on both sides of the connecting frame are located at both ends of the second driving gear and are rotatably connected with second screw rods, a second driven gear is fixed on the outer wall of the second screw rod, the second driven gear is meshed with the second driving gear, a limiting sleeve is threadedly connected to the outer wall of the second screw rod, and the limiting sleeve passes through the connecting frame and is inserted into the slot.

[0009] A limiting plate is fixed to the top end of the connecting member, and a bottom end of the limiting plate contacts the top ends of the first mounting bracket and the second mounting bracket.

[0010] A push handle is installed at one end of the first mounting frame away from the second mounting frame, and universal wheels are installed at the bottom ends of the first mounting frame, the second mounting frame and the connecting frame.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The portable folding trolley is different from the prior art in that the first rotating shaft is driven to rotate, the first rotating shaft drives the first driving gear to rotate, the first driving gear drives the first driven gear to rotate, the first driven gear drives the first screw rod to rotate, the first screw rod drives the movable sleeve to move, so that the connecting plate moves, so that the telescopic blocking member is raised and lowered, so that the telescopic blocking member is adjusted according to the height of the goods, so as to prevent the goods from moving out of the trolley during transportation, causing the loss of goods or the damage caused by the rolling of goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a side view of the utility model;

[0015] Figure 3 It is a schematic diagram of the first partial structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the second partial structure of the utility model.

[0017] In the figure: 1. first mounting frame; 2. second mounting frame; 3. connecting frame; 4. telescopic stopper; 5. first fixing plate; 6. connecting plate; 7. lifting mechanism; 701. first fixing frame; 702. first screw rod; 703. movable sleeve; 704. first driven gear; 705. first driving gear; 706. first rotating shaft; 8. fixing mechanism; 801. second rotating shaft; 802. second driving gear; 803. second driven gear; 804. second screw rod; 805. limiting sleeve; 9. connecting member; 10. fixing block; 11. slot. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] A trolley is often needed when carrying lighter items over a short distance. The trolley provided by the utility model is specifically used for moving goods, and can be folded for storage. At the same time, the telescopic stoppers 4 on both sides can be raised and lowered, so that the telescopic stoppers 4 can be adjusted according to the size of the goods, thereby preventing the goods from moving out of the trolley.

[0020] like Figure 1-Figure 4As shown, the utility model provides a technical solution: a portable folding trolley, comprising a first mounting frame 1, a second mounting frame 2 and a connecting frame 3, first fixing plates 5 are fixed on both sides and ends away from each other of the first mounting frame 1 and the second mounting frame 2, a telescopic stopper 4 is rotatably connected to the top of the first fixing plate 5, a connecting plate 6 is arranged above the first mounting frame 1 and the second mounting frame 2, the top of the telescopic stopper 4 is rotatably connected to the bottom end of the connecting plate 6, a lifting mechanism 7 is arranged on both sides of the first mounting frame 1 and the second mounting frame 2, the lifting mechanism 7 comprises a first fixing frame 701 fixed to one side of the bottom of the first mounting frame 1 and the second mounting frame 2, a second fixing frame is fixed to the other side of the bottom of the first mounting frame 1 and the second mounting frame 2, a first rotating shaft 706 is rotatably connected between the first fixing frame 701 at the bottom end of the first mounting frame 1 and the second fixing frame and between the first fixing frame 701 at the bottom end of the second mounting frame 2 and the second fixing frame, and a first driving gear 705 is fixed to the outer walls of both ends of the first rotating shaft 706. The lifting mechanism 7 also includes a first screw rod 702 which is rotatably connected to the inner wall of the top end of the first fixed frame 701 and the second fixed frame respectively, a first driven gear 704 is fixed to the bottom end of the first screw rod 702, the first driven gear 704 is meshed with the first driving gear 705, a movable sleeve 703 is screwed to the outer wall of the first screw rod 702, the movable sleeve 703 is fixed to the connecting plate 6, a motor is fixed to one side of the first fixed frame 701, the output end of the motor passes through the first fixed frame 701 and is fixed to the first rotating shaft 706, and the motor has a self-locking function.

[0021] It should be noted that the first rotating shaft 706 is driven to rotate by the motor, the first rotating shaft 706 drives the first driving gear 705 to rotate, the first driving gear 705 drives the first driven gear 704 to rotate, the first driven gear 704 drives the first screw rod 702 to rotate, the first screw rod 702 drives the movable sleeve 703 to move, so that the connecting plate 6 moves, thereby making the telescopic block 4 rise and fall, so as to adjust the telescopic block 4 according to the height of the cargo. The telescopic block 4 is composed of a plurality of scissor-type brackets and can be extended and retracted, which belongs to the prior art and will not be elaborated in detail here.

[0022] like Figure 1 and Figure 4As shown, a fixing block 10 is fixed on both sides of the end of the first mounting frame 1 and the second mounting frame 2 close to each other, and a connecting piece 9 corresponding to the fixing block 10 is installed at both ends of the connecting frame 3, and the fixing block 10 is rotatably connected to the connecting piece 9, and a slot 11 is opened at one end of the fixing block 10 close to the connecting frame 3. A fixing mechanism 8 is arranged between the inner walls of both sides of the connecting frame 3, and the fixing mechanism 8 includes a second rotating shaft 801 rotatably connected between the inner walls of both sides of the connecting frame 3, and a second driving gear 802 is fixed at both ends of the second rotating shaft 801, and a second screw rod 804 is rotatably connected at both ends of the inner walls of both sides of the connecting frame 3 located at the second driving gear 802, and a second driven gear 803 is fixed on the outer wall of the second screw rod 804, and the second driven gear 803 is meshed with the second driving gear 802, and a limiting sleeve 805 is screwed on the outer wall of the second screw rod 804, and the limiting sleeve 805 passes through the connecting frame 3 and is inserted in the slot 11. A limit plate is fixed to the top of the connecting member 9, and the bottom of the limit plate contacts the top of the first mounting frame 1 and the second mounting frame 2. A push handle is installed at one end of the first mounting frame 1 away from the second mounting frame 2, and universal wheels are installed at the bottom ends of the first mounting frame 1, the second mounting frame 2 and the connecting frame 3.

[0023] It should be noted that a knob is rotatably connected to one side of the connecting frame 3, and the second rotating shaft 801 passes through the connecting frame 3 and is fixed to the knob. The second driving gear 802 is rotated by rotating the knob, and the rotation of the second driving gear 802 drives the second driven gear 803 to rotate, so that the second screw rod 804 rotates, and then the limiting sleeve 805 moves. The limiting sleeve 805 is inserted into the slot 11 to fix the first mounting frame 1 and the second mounting frame 2. In addition, before rotating the knob, the first mounting frame 1 and the second mounting frame 2 can be rotated outward so that the bottom end of the limiting plate contacts the top end of the first mounting frame 1 and the second mounting frame 2, and then the limiting sleeve 805 can be inserted into the slot 11 by rotating the knob. When the trolley is not in use, the knob can be reversed, and the first mounting frame 1 and the second mounting frame 2 are rotated inward to achieve folding and storage.

[0024] Working principle: first, place the goods in the first mounting frame 1 and the second mounting frame 2, and then start the motor, the motor drives the first rotating shaft 706 to rotate, the rotation of the first rotating shaft 706 drives the first driving gear 705 to rotate, the rotation of the first driving gear 705 drives the first driven gear 704 to rotate, the rotation of the first driven gear 704 drives the first screw rod 702 to rotate, the rotation of the first screw rod 702 drives the movable sleeve 703 to move, so that the connecting plate 6 moves, thereby making the telescopic stopper 4 rise and fall, so that the telescopic stopper 4 can be adjusted according to the height of the goods.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A portable folding trolley, comprising a first mounting frame (1), a second mounting frame (2) and a connecting frame (3), characterized in that: A first fixing plate (5) is fixed on both sides and one end away from each other of the first mounting frame (1) and the second mounting frame (2); the top of the first fixing plate (5) is rotatably connected to a telescopic stopper (4); a connecting plate (6) is arranged above the first mounting frame (1) and the second mounting frame (2); the top of the telescopic stopper (4) is rotatably connected to the bottom of the connecting plate (6); a lifting mechanism (7) is arranged on both sides of the first mounting frame (1) and the second mounting frame (2); the lifting mechanism (7) comprises a first fixing frame (701) fixed to one side of the bottom of the first mounting frame (1) and the second mounting frame (2); a second fixing frame is fixed to the other side of the bottom of the first mounting frame (1) and the second mounting frame (2); a first rotating shaft (706) is rotatably connected between the first fixing frame (701) and the second fixing frame at the bottom of the first mounting frame (1) and between the first fixing frame (701) and the second fixing frame at the bottom of the second mounting frame (2); and first driving gears (705) are fixed to the outer walls of both ends of the first rotating shaft (706).

2. A portable folding trolley according to claim 1, characterized in that: The lifting mechanism (7) further comprises a first screw rod (702) rotatably connected to the inner wall of the top end of the first fixed frame (701) and the second fixed frame respectively; a first driven gear (704) is fixed to the bottom end of the first screw rod (702); the first driven gear (704) is meshed with a first driving gear (705); a movable sleeve (703) is screwed to the outer wall of the first screw rod (702); and the movable sleeve (703) is fixed to the connecting plate (6).

3. A portable folding trolley according to claim 1, characterized in that: A fixing block (10) is fixed on both sides of the ends of the first mounting frame (1) and the second mounting frame (2) that are close to each other, and connecting pieces (9) corresponding to the fixing blocks (10) are installed at both ends of the connecting frame (3), the fixing block (10) is rotatably connected to the connecting piece (9), and a slot (11) is provided at one end of the fixing block (10) close to the connecting frame (3).

4. A portable folding trolley according to claim 1, characterized in that: A fixing mechanism (8) is provided between the inner walls on both sides of the connecting frame (3), the fixing mechanism (8) comprising a second rotating shaft (801) rotatably connected between the inner walls on both sides of the connecting frame (3), second driving gears (802) being fixed at both ends of the second rotating shaft (801), second screw rods (804) being rotatably connected at both ends of the inner walls on both sides of the connecting frame (3) located at the second driving gear (802), a second driven gear (803) being fixed to the outer wall of the second screw rod (804), the second driven gear (803) being meshed with the second driving gear (802), a limiting sleeve (805) being threadedly connected to the outer wall of the second screw rod (804), the limiting sleeve (805) passing through the connecting frame (3) and being inserted into the slot (11).

5. The portable foldable trolley according to claim 3, characterized in that: A limiting plate is fixed to the top end of the connecting member (9), and the bottom end of the limiting plate contacts the top ends of the first mounting frame (1) and the second mounting frame (2).

6. The portable foldable trolley according to claim 1, characterized in that: A push handle is installed at one end of the first mounting frame (1) away from the second mounting frame (2), and universal wheels are installed at the bottom ends of the first mounting frame (1), the second mounting frame (2) and the connecting frame (3).

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