Trailer jack

Abstract

The utility model discloses a trailer jack which comprises a jack body, idler wheel pieces are arranged at the bottom of the jack body, the trailer jack further comprises a fastening mechanism arranged on the side wall of the jack body, the fastening mechanism comprises a connecting piece and a fixing piece, the connecting piece is fixedly connected with the side wall of the jack body, and the connecting piece is provided with a dovetail groove. A dovetail groove is formed in the connecting piece, the width of the dovetail groove in the vertical upward direction is gradually increased, a fixing space is formed in one side of the fixing piece, a dovetail-shaped tenon with the width gradually increased is arranged on the other side of the fixing piece, and the connecting piece and the fixing piece are detachably connected through sliding fit of the dovetail-shaped tenon and the dovetail groove. The problems that in the prior art, the connecting mode of a trailer jack and a trailer is complex, and disassembly is inconvenient are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of jacks, in particular to a trailer jack. Background Art

[0002] Trailer jacks are generally used to support the trailer when it is disconnected from the towing vehicle. There are generally two types of trailer jacks, one is a flat-bottomed trailer jack used for support on grass and soft land, and the other is a roller trailer jack used on flat ground.

[0003] For example, the patent document with the existing patent application number CN202322749691.2 discloses a jack body, a crank handle for controlling the lifting and lowering of the jack body is installed above the jack body, and a roller, a support member, a positioning member and a locking member are provided at the lower end of the jack body through a connecting member. The support member is movably arranged under the jack body to provide stable support for the jack body, the positioning member is arranged on the connecting member, the positioning member is used to locate the position of the support member, and the locking member is movably arranged on the jack body; through the above scheme, the connection method between the jack body and the trailer is relatively complicated. When the jack body needs to be used in other trailer equipment, it takes a long time to disassemble the jack body. Utility Model Content

[0004] The purpose of the present invention is to overcome the above technical deficiencies and provide a trailer jack to solve the problem in the prior art that the connection between the trailer jack and the trailer is relatively complicated and inconvenient to disassemble.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] The utility model provides a trailer jack, comprising a jack body, wherein a roller member is provided at the bottom of the jack body, and further comprising a fastening mechanism arranged on the side wall of the jack body, wherein the fastening mechanism comprises a connecting member and a fixing member, wherein the connecting member is fixedly connected to the side wall of the jack body, the connecting member has a dovetail groove, and the width of the dovetail groove is gradually increased in the vertical upward direction, one side of the fixing member has a fixing space, and the other side of the fixing member has a dovetail tenon with gradually increasing width, and the dovetail tenon is slidably matched with the dovetail groove to provide a detachable connection between the connecting member and the fixing member.

[0007] In some embodiments, the roller member includes a mounting seat and at least one rotating wheel, the mounting seat is fixedly connected to the bottom of the jack body, a rotating shaft is rotatably provided in the mounting seat, and at least one rotating wheel is fixedly connected to the rotating shaft.

[0008] In some embodiments, the roller member further includes a driving member and a power storage module, both of which are connected to the mounting seat, the output end of the driving member is fixedly connected to the rotating shaft, and the power storage module is electrically connected to the driving member.

[0009] In some embodiments, the connecting member includes a mounting tube and a first adapter block, the mounting tube is fixedly connected to the side wall of the jack body, one side of the first adapter block is fixedly connected to the mounting tube, and the dovetail groove is opened on the other side of the first adapter block.

[0010] In some embodiments, an insert plate is provided in the first adapter block and is slidable along the width direction of the dovetail groove. A limit block is fixed on the insert plate. The limit block can be moved into or out of the dovetail groove by sliding the insert plate. A slot that cooperates with the limit block is provided on the dovetail tenon.

[0011] In some embodiments, the fixing member includes a second adapter block, at least two screw rods, a cross plate and two locking blocks. At least two of the screw rods are fixed at intervals on one side of the second adapter block. The cross plate movably spans between the two screw rods. The two locking blocks are respectively screwed with the two screw rods, and the dovetail tenon is arranged on the other side of the second adapter block.

[0012] In some embodiments, an elastic rubber layer is provided on the other side of the second adapter block and the transverse plate.

[0013] In some embodiments, the driving member is a reduction motor.

[0014] In some embodiments, two rotating wheels are fixed on the rotating shaft.

[0015] In some embodiments, the wheel surfaces of the two rotating wheels are smooth.

[0016] Compared with the prior art, the utility model provides a trailer jack, which is fixedly connected to the side wall of the jack body through a connecting piece. The connecting piece has a dovetail groove, and the width of the dovetail groove is gradually increased in the vertical upward direction. One side of the fixing piece has a fixed space, and the other side of the fixing piece has a dovetail tenon with a gradually increasing width. After the fixing piece is fixed to the trailer, the jack body drives the connecting piece to rise, so that the dovetail tenon can match the dovetail groove. The fixing piece and the connecting piece are detachably connected, which can shorten the time when the jack body is disassembled and separated from the trailer. The operation is simple and the work efficiency is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a trailer jack provided by an embodiment of the utility model;

[0018] Figure 2 This is a structural schematic diagram of a trailer jack provided by an embodiment of the utility model from another perspective;

[0019] Figure 3 yes Figure 2 A magnified schematic diagram of area A in the middle;

[0020] Figure 4 This is a structural diagram of a first adapter block provided by an embodiment of the present utility model;

[0021] Figure 5 This is a structural diagram of the first adapter block provided by an embodiment of the present utility model from another perspective;

[0022] Figure 6 It is a structural diagram of the second adapter block provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] In order to solve the technical problems in the prior art that the connection between the trailer jack and the trailer is relatively complicated and inconvenient to disassemble, the utility model provides a trailer jack that can realize a detachable connection between the jack body and the trailer, thereby improving work efficiency.

[0025] See also Figures 1-6 , Figures 1-6 A trailer jack in one embodiment of the present invention includes a jack body 1, a roller member 2 is provided at the bottom of the jack body 1, and a fastening mechanism 3 is provided on the side wall of the jack body 1, the fastening mechanism 3 includes a connecting member 31 and a fixing member 32, the connecting member 31 is fixedly connected to the side wall of the jack body 1, the connecting member 31 has a dovetail groove 310, and the width of the dovetail groove 310 is gradually increased in the vertical upward direction, one side of the fixing member 32 has a fixing space 320, and the other side of the fixing member 32 has a dovetail tenon 321 with gradually increasing width, the dovetail tenon 321 is slidably engaged with the dovetail groove 310, so that the connecting member 31 and the fixing member 32 are detachably connected.

[0026] It should be noted that the roller component 2 is not limited to a specific structure. The roller component 2 includes a mounting seat 21 and at least one rotating wheel 22. The mounting seat 21 is fixedly connected to the bottom of the jack body 1. A rotating shaft is rotatably provided in the mounting seat 21, and at least one rotating wheel 22 is fixedly connected to the rotating shaft.

[0027] In this specific embodiment, the two wheels 22 are fixedly provided on the rotating shaft, and the wheel surfaces of the two wheels 22 are smooth surfaces. The wheel surfaces of the wheels 22 have no texture, so that the contact area between the wheels 22 and the ground is reduced, and lower rolling resistance can be provided under ideal conditions (such as a very smooth and dry surface).

[0028] On the basis of the above scheme, in order to reduce the workload of the operator, specifically, the roller member 2 also includes a driving member 23 and a storage module 24, the driving member 23 and the storage module 24 are both connected to the mounting seat 21, the output end of the driving member 23 is fixedly connected to the rotating shaft, and the storage module 24 is electrically connected to the driving member 23.

[0029] It should be noted that the driving member 23 is a reduction motor, which drives the rotating shaft to rotate to drive the wheel to roll. The operator does not need to expend much physical strength to push the trailer jack to move.

[0030] In this specific embodiment, the connecting member 31 includes a mounting tube 311 and a first adapter block 312. The mounting tube 311 is fixedly connected to the side wall of the jack body 1. One side of the first adapter block 312 is fixedly connected to the mounting tube 311. The dovetail groove 310 is opened on the other side of the first adapter block 312.

[0031] On the basis of the above scheme, an insert plate 313 is provided in the first adapter block 312 and is slidable along the width direction of the dovetail groove 310. A limit block 314 is fixed on the insert plate 313. The limit block 314 can be moved into or out of the dovetail groove 310 by sliding the insert plate 313. A slot 3211 that cooperates with the limit block 314 is provided on the dovetail tenon 321.

[0032] It should be noted that a through hole and a avoidance hole located on one side of the through hole are provided in the first adapter block 312. When the limit block 314 is located in the through hole, the limit block 314 can be clamped in the slot 3211, thereby limiting the movement of the dovetail tenon 321 in the dovetail groove 310; when the limit block 314 is located in the avoidance hole, the limit block 314 can be separated from the slot 3211, and the dovetail tenon 321 can move in the dovetail groove 310, thereby realizing a detachable connection between the connecting member 31 and the fixing member 32.

[0033] In one embodiment, the fixing member 32 includes a second adapter block 322, at least two screw rods 323, a cross plate 324 and two locking blocks 325, at least two of the screw rods 323 are fixed at intervals on one side of the second adapter block 322, the cross plate 324 movably spans between the two screw rods 323, the two locking blocks 325 are respectively screwed with the two screw rods 323, and the dovetail tenon 321 is arranged on the other side of the second adapter block 322.

[0034] In this specific embodiment, a total of four screw rods 323 are provided on the second adapter block 322, and a horizontal plate 324 is slidably provided between each screw rod 323, wherein the locking block 325 is a hexagonal nut. By rotating the locking block 325, the distance between the horizontal plate 324 and the second adapter block 322 can be adjusted to ensure that the horizontal beam or vertical beam of the trailer can be fixed between the horizontal plate 324 and the second adapter block 322.

[0035] On the basis of the above solution, in order to increase the friction between the second adapter block 322, the cross plate 324 and the trailer, and to avoid damage to the paint surface of the trailer equipment, specifically, an elastic rubber layer is provided on the other side of the second adapter block 322 and the cross plate 324.

[0036] In order to better understand the present invention, the following Figures 1 to 6 The technical solution of the utility model is described in detail:

[0037] The jack body 1 is connected to the horizontal beam or vertical beam of the trailer equipment through the fixing piece 32, and the jack body 1 drives the connecting piece 31 to rise, so that the dovetail tenon 321 cooperates with the dovetail groove 310. When the jack body 1 lifts one side of the trailer equipment to a certain height, the sliding plug plate 313 can be used to make the limit block 314 be locked in the slot 3211; when the jack body 1 needs to be disassembled, it is only necessary to slide the plug plate 313 to separate the limit block 314 from the slot 3211, and the jack body 1 drives the connecting piece 31 to descend, so that the dovetail tenon 321 can be separated from the dovetail groove 310, making disassembly convenient.

[0038] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A trailer jack, comprising a jack body, wherein a roller is provided at the bottom of the jack body, wherein: It also includes a fastening mechanism arranged on the side wall of the jack body, the fastening mechanism includes a connecting member and a fixing member, the connecting member is fixedly connected to the side wall of the jack body, the connecting member has a dovetail groove, and the width of the dovetail groove is gradually increased in the vertical upward direction, one side of the fixing member has a fixed space, and the other side of the fixing member has a dovetail tenon with gradually increasing width, and the dovetail tenon is slidably matched with the dovetail groove to provide a detachable connection between the connecting member and the fixing member.

2. The trailer jack according to claim 1, characterized in that: The roller member includes a mounting seat and at least one rotating wheel. The mounting seat is fixedly connected to the bottom of the jack body. A rotating shaft is rotatably provided in the mounting seat, and at least one rotating wheel is fixedly connected to the rotating shaft.

3. The trailer jack according to claim 2, characterized in that: The roller member further includes a driving member and a power storage module, both of which are connected to the mounting seat, the output end of the driving member is fixedly connected to the rotating shaft, and the power storage module is electrically connected to the driving member.

4. The trailer jack according to claim 1, characterized in that: The connecting member includes a mounting tube and a first adapter block. The mounting tube is fixedly connected to the side wall of the jack body. One side of the first adapter block is fixedly connected to the mounting tube. The dovetail groove is opened on the other side of the first adapter block.

5. The trailer jack according to claim 4, characterized in that: An inserting plate is provided in the first adapter block and is slidable along the width direction of the dovetail groove. A limit block is fixed on the inserting plate. The limit block can be moved into or out of the dovetail groove by sliding the inserting plate. A slot that cooperates with the limit block is provided on the dovetail tenon.

6. The trailer jack according to claim 5, characterized in that: The fixing member includes a second adapter block, at least two screw rods, a cross plate and two locking blocks. At least two of the screw rods are fixed at intervals on one side of the second adapter block. The cross plate movably spans between the two screw rods. The two locking blocks are respectively screwed with the two screw rods. The dovetail tenon is arranged on the other side of the second adapter block.

7. The trailer jack according to claim 6, characterized in that: Elastic rubber layers are provided on the other side of the second adapter block and the transverse plate.

8. The trailer jack according to claim 3, characterized in that: The driving component is a reduction motor.

9. The trailer jack according to claim 2, characterized in that: The two rotating wheels are fixedly arranged on the rotating shaft.

10. The trailer jack according to claim 9, characterized in that: The wheel surfaces of the two rotating wheels are smooth surfaces.

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