A fixture for a trolley

Abstract

A fixing device for handcarts, belonging to the field of handcart technology, includes a cart body, a fixing ring, a pedal, a linkage device, and a reset structure. The fixing ring is mounted on the cart body. One end of the linkage device is connected to the fixing ring, and the other end is connected to the pedal, which is rotatably mounted on the cart body. One end of the reset structure is mounted on the cart body, and the other end is connected to the fixing ring, allowing the fixing ring to hold goods placed on the cart body. This invention uses a fixing ring to secure goods placed on the cart body. The reset structures on both sides of the fixing ring ensure that the goods are always held in place when the fixing ring is not subjected to the linkage device. When a worker steps on the pedal, the fixing ring is rotated by the linkage device, relieving the goods of the holding force and allowing them to leave the cart body. The structure is simple and can be operated by one worker.

Description

Technical Field

[0001] A fixing device for handcarts, belonging to the field of handcart technology. Background Technology

[0002] A handcart, also known as a trolley, pushcart, or hand-pulled cart, is a small transport tool that is usually pushed or pulled by human power. It is mainly used to move goods over short distances. Goods are usually placed on the handcart and transported to or from a truck to a designated location. When it is necessary to move the goods from the handcart to the rear of the truck, one end of the handcart's handle usually needs to be raised to facilitate the loading of the goods onto the truck. In the current technology, another worker usually holds the goods and then moves them onto the truck, which wastes manpower and resources. Furthermore, without a fixing device, goods may fall off the handcart during transportation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a fixing device for handcarts, which can be locked or opened by workers, thus ensuring the safety of goods during transportation and handling.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: the fixing device for the handcart includes a car body, a fixing ring, a pedal, a connecting rod device and a reset structure. The fixing ring is set on the car body. One end of the connecting rod device is connected to the fixing ring and the other end is connected to the pedal that is rotatably set on the car body. One end of the reset structure is set on the car body and the other end is connected to the fixing ring, so that the fixing ring fits the goods placed on the car body.

[0005] Preferably, the linkage device includes a first pull rod, a second pull rod, and a stroke amplification structure symmetrically arranged on both sides of the pedal. A first connecting plate, a second connecting plate, and a third connecting plate are arranged parallel to each other at intervals on the side of the vehicle body near the ground. The first connecting plate, the second connecting plate, and the third connecting plate are arranged sequentially from bottom to top. One end of the pedal is connected to the second connecting plate, and the other end is connected to one end of the first pull rod. The other end of the first pull rod is rotatably connected to the stroke amplification structure. The stroke amplification structure is arranged on the third connecting plate. One end of the second pull rod is connected to the stroke amplification structure, and the other end is rotatably connected to a fixed ring.

[0006] Preferably, the stroke amplification structure includes a first rotating rod, a second rotating rod, and a rotating cylinder. One end of the first rotating rod and the second rotating rod are disposed on the rotating cylinder. The distance between the ends of the first rotating rod and the second rotating rod away from the rotating cylinder is greater than the distance between the ends closer to the rotating cylinder. The other end of the first rotating rod is connected to a first pull rod, and the other end of the second rotating rod is connected to a second pull rod. The length of the second rotating rod is greater than the length of the first rotating rod.

[0007] Preferably, the third connecting plate is provided with two first grooves, and the rotating cylinder is disposed in the first groove.

[0008] Preferably, the vehicle body also includes handrails, trays, and wheels. The arc-shaped trays are spaced apart between the two handrails. The first connecting plate, the second connecting plate, and the third connecting plate are respectively mounted on the trays and are parallel to the tray axis. The wheels are rotatably mounted on both sides of the two handrails.

[0009] Preferably, the second connecting plate is provided with a second groove, one end of the pedal is rotatably disposed in the second groove, and the other end is connected to the two first pull rods.

[0010] Preferably, the fixing ring includes two semicircular rings and two limiting rods. The two semicircular rings are symmetrically arranged on both sides of the two handrails and are connected by the two limiting rods to form a circular fixing ring. The limiting rods are rotatably mounted on the handrails.

[0011] Preferably, the reset structure includes a spring, a limiting shaft, and a fixed shaft. The limiting shaft is located on the handrail and below the limiting rod. The fixed shaft is located on the limiting rod. One end of the spring is connected to the limiting shaft, and the other end is connected to the fixed shaft.

[0012] Compared with existing technologies, the beneficial effects of this technical solution are: This utility model uses a fixing ring to secure goods placed on the vehicle body. The reset structure on both sides of the fixing ring ensures that the goods are always secured when the fixing ring is not subjected to the action of the linkage device. When the worker steps on the pedal, the fixing ring is subjected to the action of the linkage device and rotates, so that the goods are no longer subjected to the securing force and can be removed from the vehicle body. The structure is simple and can be operated by one worker. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a fixing device for a handcart according to the present invention.

[0014] Figure 2 This is a schematic diagram of the structure of the present invention that removes the cylindrical barrel.

[0015] Figure 3 for Figure 2 A magnified view of a section at point B in the middle.

[0016] Figure 4 for Figure 2 A magnified view of a portion of point A in the middle.

[0017] Among them: 1. Vehicle body 101, first connecting plate 102, second connecting plate 103, third connecting plate 104, first groove 105, second groove 2. Fixing ring 201, semi-circular ring 202, limiting rod 3. Pedal 4. Linkage device 401, first pull rod 402, second pull rod 5. Stroke amplification structure 501, first rotating rod 502, second rotating rod 503, rotating cylinder 6. Reset structure 601, spring 602, limiting shaft 603, fixing shaft 7. Handrail 8. Wheel 9. Support plate 10. Bucket. Detailed Implementation

[0018] Figures 1-4 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-4 The present invention will be further described below.

[0019] Reference Figure 1 The fixing device for a handcart includes a cart body 1, a fixing ring 2, a pedal 3, a connecting rod device 4, and a reset structure 6. The fixing ring 2 is mounted on the cart body 1. One end of the connecting rod device 4 is connected to the fixing ring 2, and the other end is connected to the pedal 3, which is rotatably mounted on the cart body 1. One end of the two reset structures 6 is mounted on the cart body 1, and the other end is connected to the fixing ring 2, so that the axis of the fixing ring 2 is parallel to the goods placed on the cart body 1. This utility model is applicable to cylindrical goods, such as a bucket 10. The bucket 10 is placed on the cart body 1, and the fixing ring 2 is sleeved on the upper end of the bucket 10 to fix the bucket 10.

[0020] Reference Figure 2 The vehicle body 1 includes a handrail 7, a tray 9 and a wheel 8. The present invention has three arc-shaped trays 9, which are spaced apart between two cylindrical handrails 7. The wheel 8 is rotatably mounted on the lower side of the two handrails 7. The vehicle body 1 is tilted as a whole, and the bucket 10 is placed on the tray 9.

[0021] The vehicle body 1 is also provided with a first connecting plate 101, a second connecting plate 102 and a third connecting plate 103. The first connecting plate 101, the second connecting plate 102 and the third connecting plate 103 with the same shape are arranged from bottom to top on the side of the support plate 9 near the ground. The arc-shaped first connecting plate 101, the second connecting plate 102 and the third connecting plate 103 are respectively arranged in the middle of the support plate 9 and are perpendicular to the support plate 9.

[0022] The fixing ring 2 includes two semicircular rings 201 and two limiting rods 202. The two limiting rods 202 are rotatably set on the outside of the handrail 7. The limiting rods 202 are provided with three through holes. The middle through hole is connected to the handrail 7 by a pin, and the two through holes on both sides are connected to the two semicircular rings 201 by pins respectively. The two semicircular rings 201 are symmetrically arranged on both sides of the two handrails 7 to form the fixing ring 2 of the fixing bucket 10.

[0023] A fixing ring 2 is located at the upper end of the uppermost support plate 9, and a pedal 3 is located on the second connecting plate 102. The fixing ring 2 and the pedal 3 are connected by a connecting rod device 4. The connecting rod device 4 includes a first pull rod 401, a second pull rod 402, and a stroke amplification structure 5 symmetrically arranged on both sides of the pedal 3. The second connecting plate 102 is provided with a second groove 105. One end of the pedal 3 is rotatably mounted in the second groove 105 by a pin, and the other end is connected to the two first pull rods 401 by a pin.

[0024] The first pull rod 401 and the second pull rod 402 are connected by a stroke amplification structure 5, which is set on the third connecting plate 103. One end of the second pull rod 402 is connected to the stroke amplification structure 5, and the other end is rotatably connected to the fixed ring 2.

[0025] Reference Figure 3 The stroke amplification structure 5 includes a first rotating rod 501, a second rotating rod 502, and a rotating cylinder 503. One end of the first rotating rod 501 and the second rotating rod 502 are set on the rotating cylinder 503. The third connecting plate 103 is provided with two first grooves 104. The rotating cylinder 503 is set in the first groove 104. The pin passing through the rotating cylinder 503 is set on the side wall of the first groove 104. The distance between the ends of the first rotating rod 501 and the second rotating rod 502 away from the rotating cylinder 503 is greater than the distance between the ends closer to the rotating cylinder 503, forming an inverted triangular connecting frame. The other end of the first rotating rod 501 is connected to the first pull rod 401, and the other end of the second rotating rod 502 is connected to the second pull rod 402.

[0026] This invention, by setting a stroke amplification structure 5, shortens the stroke required for the fixed ring 2 to completely detach from the upper end of the barrel 10 when the pedal 3 is applied. If the first pull rod 401 and the second pull rod 402 are directly connected, the fixed ring 2 can also be rotated when the pedal 3 is applied, but a large stroke of the pedal 3 is required. The connecting frame of the first rotating rod 501 and the second rotating rod 502 with a stroke triangle, and the length of the second rotating rod 502 being greater than the length of the first rotating rod 501, enables the pedal 3 to have a relatively shorter stroke when the fixed ring 2 rotates by the same angle.

[0027] Reference Figure 4 The retaining ring 2, through the reset structures 6 on both sides, maintains its axis parallel to the axis of the bucket 10 when the pedal 3 is not being stepped on, i.e., it is fitted onto the upper end of the bucket 10. The reset structure 6 includes a spring 601, a limiting shaft 602, and a fixing shaft 603. The limiting shaft 602 is located on the outside of the handrail 7 and below the limiting rod 202, limiting the downward rotation angle of the limiting rod 202. The fixing shaft 603 is located on the limiting rod 202, passes through a through hole in the limiting rod 202, and is fixed to the outside of the handrail 7. One end of the spring 601 is connected to the limiting shaft 602, and the other end is connected to the fixing shaft 603, and it is in a stretched state.

[0028] Work process: When it is necessary to transport the barrel 10, push the vehicle body 1 to the side of the barrel 10, step on the pedal 3, rotate the fixing ring 2 to be parallel to the handrail 7, place the barrel 10 on the vehicle body 1, release the pedal 3, rotate the fixing ring 2 to fix the barrel 10, and transport it to the required location through the vehicle body 1.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A fixing device for a handcart, characterized in that: The device includes a vehicle body (1), a fixing ring (2), a pedal (3), a linkage device (4), and a reset structure (6). The fixing ring (2) is mounted on the vehicle body (1). One end of the linkage device (4) is connected to the fixing ring (2), and the other end is connected to the pedal (3) which is rotatably mounted on the vehicle body (1). One end of the reset structure (6) is mounted on the vehicle body (1), and the other end is connected to the fixing ring (2), so that the fixing ring (2) covers the goods placed on the vehicle body (1).

2. The fixing device for a handcart according to claim 1, characterized in that: The linkage device (4) includes a first pull rod (401), a second pull rod (402) and a stroke amplification structure (5) symmetrically arranged on both sides of the pedal (3). A first connecting plate (101), a second connecting plate (102) and a third connecting plate (103) are arranged parallel to each other on the side of the vehicle body (1) near the ground. The first connecting plate (101), the second connecting plate (102) and the third connecting plate (103) are arranged sequentially from bottom to top. One end of the pedal (3) is connected to the second connecting plate (102) and the other end is connected to one end of the first pull rod (401). The other end of the first pull rod (401) is rotatably connected to the stroke amplification structure (5). The stroke amplification structure (5) is arranged on the third connecting plate (103). One end of the second pull rod (402) is connected to the stroke amplification structure (5) and the other end is rotatably connected to the fixing ring (2).

3. A fixing device for a handcart according to claim 2, characterized in that: The stroke amplification structure (5) includes a first rotating rod (501), a second rotating rod (502), and a rotating cylinder (503). One end of the first rotating rod (501) and the second rotating rod (502) are set on the rotating cylinder (503). The distance between the ends of the first rotating rod (501) and the second rotating rod (502) away from the rotating cylinder (503) is greater than the distance between the ends closer to the rotating cylinder (503). The other end of the first rotating rod (501) is connected to the first pull rod (401), and the other end of the second rotating rod (502) is connected to the second pull rod (402). The length of the second rotating rod (502) is greater than the length of the first rotating rod (501).

4. A fixing device for a handcart according to claim 3, characterized in that: The third connecting plate (103) is provided with two first grooves (104), and the rotating cylinder (503) is set in the first groove (104).

5. A fixing device for a handcart according to claim 2, characterized in that: The vehicle body (1) also includes handrails (7), trays (9) and wheels (8). The arc-shaped trays (9) are spaced between the two handrails (7). The first connecting plate (101), the second connecting plate (102) and the third connecting plate (103) are respectively set on the trays (9) and are set parallel to the axis of the trays (9). The wheels (8) are rotatably set on both sides of the two handrails (7).

6. A fixing device for a handcart according to claim 2, characterized in that: The second connecting plate (102) is provided with a second groove (105), one end of the pedal (3) is rotatably set in the second groove (105), and the other end is connected to the two first pull rods (401).

7. A fixing device for a handcart according to claim 5, characterized in that: The fixing ring (2) includes two semicircular rings (201) and two limiting rods (202). The two semicircular rings (201) are symmetrically arranged on both sides of the two handrails (7) and connected by the two limiting rods (202) to form a circular fixing ring (2). The limiting rods (202) are rotatably arranged on the handrails (7).

8. A fixing device for a handcart according to claim 7, characterized in that: The reset structure (6) includes a spring (601), a limiting shaft (602) and a fixed shaft (603). The limiting shaft (602) is located on the handrail (7) and below the limiting rod (202). The fixed shaft (603) is located on the limiting rod (202). One end of the spring (601) is connected to the limiting shaft (602), and the other end is connected to the fixed shaft (603).

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