Jack type trailer

Abstract

The utility model provides a jack type trailer, and relates to the technical field of trailers, the jack type trailer comprises a two-wheeled frame, the middle part of the upper end of the two-wheeled frame is provided with a jack and a pressing cake for driving the jack, and the top of the jack is provided with a hook ball; a supporting rod is arranged in the middle of the two-wheeled frame, and a handle is vertically mounted at the tail end of the supporting rod; wherein a rotating trundle or a supporting frame is mounted in the middle of the bottom end of the supporting rod; a fixing frame is arranged in the middle of the upper end of the two-wheel frame and used for installing and supporting the jack. The vehicle is simple in structure, convenient to operate and large in load capacity, and stable rolling and steering can be achieved by arranging the rotating trundles; the lifting jack is driven to drive the hook ball to ascend and descend, so that trailers with different sizes can be dragged or dragged, and the convenience in the application process is improved.

Description

Technical Field

[0001] This utility model relates to the field of trailer technology, specifically a jack-type trailer. Background Technology

[0002] A trailer is a device used for towing and transporting other vehicles or heavy objects. It typically lacks its own power and requires a tractor (such as a truck or car) to pull it. During the transport of heavy objects, workers need to load the equipment onto the trailer, and then use a towing device to move the trailer loaded with the heavy objects to the tractor for installation and use. To achieve the above objectives, this utility model proposes a jack-type trailer that can tow or pull a trailer loaded with heavy objects. Utility Model Content

[0003] To address the problems in the background art, this utility model provides a jack-type trailer.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A jack-type trailer includes a two-wheeled frame, a jack and a pressure plate for driving the jack are provided at the upper middle part of the two-wheeled frame, and a hook ball is installed on the top of the jack; a support rod is provided in the middle of the two-wheeled frame, and a handle is vertically installed at the end of the support rod; wherein, a swivel caster or support frame is installed at the lower middle part of the support rod.

[0006] Preferably, a fixing frame is provided at the upper middle part of the two-wheeled vehicle frame, the fixing frame is used to install and support the jack, and an opening is provided at the left middle part of the fixing frame.

[0007] Preferably, the support rod is connected to the two-wheeled vehicle frame in a vertical direction.

[0008] Preferably, the support rod and the fixing frame are fixedly connected by reinforcing ribs.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] The jack-type trailer proposed in this solution has a simple structure, is easy to operate, and has a large load capacity. It can achieve smooth rolling and steering by being equipped with rotating casters. By driving the jack to move the hook ball for lifting and lowering, it can be used to pull or tow trailers of different sizes, improving the convenience of application. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2This is a side view of the structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the two-wheeled trailer structure in this utility model;

[0014] Figure 4 This is a schematic diagram of the jack in this utility model.

[0015] In the diagram: 1. Two-wheeled frame; 2. Fixing frame; 21. Through hole; 3. Jack; 4. Hook ball; 5. Pressure plate; 51. Auxiliary spring; 6. Support rod; 7. Handle; 8. Reinforcing rib; 9. Rotary caster; 10. Support frame. Detailed Implementation

[0016] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0017] Example: Refer to Figures 1-4 As shown, a jack-type trailer of this embodiment includes a two-wheeled frame 1, a jack 3 is provided at the upper middle part of the two-wheeled frame 1, and a pressure plate 5 for driving the jack 3. An auxiliary spring 51 is provided at the bottom of the pressure plate 5. When the jack 3 is driven by pressing down the pressure plate 5, the pressure plate 5 can rebound under the action of the auxiliary spring 51, so that the pressure plate 5 can be reset, which plays an auxiliary role in pressing down the pressure plate 5. The pressure plate 5 can also be removed and used as a pressure relief wrench.

[0018] The top of the jack 3 is equipped with a hook ball 4; a support rod 6 is provided in the middle of the two-wheeled frame 1, and a handle 7 is vertically installed at the end of the support rod 6; a swivel caster 9 or a support frame 10 is installed at the bottom middle of the support rod 6.

[0019] When the swivel casters 9 are installed, the trailer forms a three-wheeled structure; when the support frame 10 is installed, a two-wheeled trailer structure is formed.

[0020] In some examples, a fixing frame 2 is provided at the upper middle part of the two-wheeled frame 1. The fixing frame 2 is used to support the installation of the jack 3, so that the jack 3 can be installed stably. A through-hole 21 is provided at the middle left end of the fixing frame 2. The pressure relief valve of the jack 3 can be turned by removing the pressure plate 5 and passing it through the through-hole 21.

[0021] In some examples, the support rod 6 is vertically connected to the two-wheeled frame 1.

[0022] In some examples, the support rod 6 is fixedly connected to the fixing frame 2 by a reinforcing rib 8 to improve the stability of the support rod 6.

[0023] In some examples, the dimensions of a jack-type trailer are as follows:

[0024] Length: 40 inches; Width: 40 inches;

[0025] Height: 33 inches; Weight: 52 pounds.

[0026] The two-wheeled frame 1 is equipped with 16-inch airless tires on both sides, and the swivel casters 9 use 8-inch tires to achieve smooth rolling and steering; the lifting adjustment of the jack 3 ranges from 21 inches to 29.5 inches to accommodate trailers of different sizes for towing or pulling.

[0027] Furthermore, the hook ball 4 is 1.88-2 inches in size, suitable for couplers of 1.88 inches or larger, giving this invention a 1500-pound capacity, which can easily move various trailers. The hook ball 4 is threadedly connected to the base of the output end of the jack 3. The threaded connection structure design facilitates quick disassembly and replacement of the hook ball 4 by the staff.

[0028] The working principle of this utility model is as follows:

[0029] When in use, swivel casters 9 or support frame 10 can be installed at the bottom of support rod 6 as needed.

[0030] refer to Figures 1-2 As shown, when the swivel caster 9 is installed, this utility model forms a three-wheeled trailer structure. The swivel caster 9 can rotate, and under the action of the swivel caster 9, this device can easily achieve smooth rolling and turning.

[0031] refer to Figure 3 As shown, when the support frame 10 is selected for installation, the present invention forms a two-wheeled trailer structure, and the support frame 10 can play a role in providing stable support.

[0032] In use, first move the device to the trailer to be towed using the two-wheeled frame 1, and position the hook ball 4 below the trailer coupler. Then, drive the jack 3 by stepping on the pressure plate 5, so that the output end of the jack 3 drives the hook ball 4 to rise, thereby connecting the hook ball 4 with the trailer coupler, and then the trailer can be towed or pulled.

[0033] Conversely, when it is necessary to depressurize jack 3, simply remove the pressure plate 5 and pass it through the port 21 to engage with the pressure relief valve of jack 3 and twist it to depressurize jack 3. In the depressurized state, the hook ball 4 can be pressed to lower the output end of jack 3 until it returns to its initial position.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A jack-type trailer, characterized in that, It includes a two-wheeled frame (1), a jack (3) is provided at the middle of the upper end of the two-wheeled frame (1), and a pressure plate (5) for driving the jack (3). A hook ball (4) is installed on the top of the jack (3). A support rod (6) is provided in the middle of the two-wheeled frame (1), and a handle (7) is vertically installed at the end of the support rod (6). Among them, a swivel caster (9) or a support frame (10) is installed at the middle of the bottom end of the support rod (6).

2. The jack-type trailer according to claim 1, characterized in that, A fixed frame (2) is provided at the middle of the upper end of the two-wheeled vehicle frame (1). The fixed frame (2) is used to support the jack (3) during installation. An opening (21) is provided at the middle of the left end of the fixed frame (2).

3. A jack-type trailer according to claim 2, characterized in that, The support rod (6) is vertically connected to the two-wheeled frame (1).

4. A jack-type trailer according to claim 3, characterized in that, The support rod (6) and the fixing frame (2) are fixedly connected by reinforcing ribs (8).

5. A jack-type trailer according to claim 4, characterized in that, An auxiliary spring (51) is provided at the bottom of the pressing cake (5).

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