Trailer jacking device

Abstract

The utility model relates to a trailer jacking device which comprises an installation assembly, a jacking assembly and a jacking assembly. The jacking assembly comprises an inner pipe and an outer pipe arranged on the outer side of the inner pipe in a sleeving mode, the outer pipe is connected with the connecting plate, and the inner pipe can move up and down relative to the outer pipe under the action of external force so as to change the height of the jacking assembly; the actuating assembly comprises a connecting piece and a threaded rod, the connecting piece is provided with an external thread matched with the threaded rod, and the threaded rod rotates to drive the connecting piece to move up and down so as to drive the inner pipe to move up and down relative to the outer pipe; the driving assembly comprises a transmission part and a driving part, and the transmission part can transmit the driving force of the driving part to the threaded rod so as to drive the threaded rod to rotate; the trailer jacking device further comprises a height adjusting assembly connected with the outer pipe, and the height adjusting assembly is configured to be capable of operating the height adjusting assembly to drive the outer pipe to move in the height direction relative to the inner pipe, so that a larger lifting stroke of the whole jacking device is achieved, the requirement for jacking of a larger length is met, and the application range is wider.

Description

TECHNICAL FIELD

[0001] The utility model relates to trailer jacking technology field, concretely relates to a trailer jacking device. BACKGROUND

[0002] The jack is a kind of common tool for heavy object support, and the form of finished product jack used in market is various, there is traditional hand-operated jack, and there is electric jack.

[0003] The existing hand-operated jack is more laborious in the operation jacking process, inconvenient to operate, and the lifting stroke of the current jack is limited, cannot be applicable to the situation needing larger lifting stroke.

[0004] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. INVENTION CONTENTS

[0005] Therefore, the embodiment of the present application provides a trailer jacking device to solve at least one problem in the background art, comprising:

[0006] The mounting assembly comprises a mounting plate and a connecting plate connected with the mounting plate;

[0007] The jacking assembly is connected with the connecting plate and comprises an inner tube and an outer tube sleeved outside the inner tube, the outer tube is connected with the mounting plate, and the inner tube can move up and down relative to the outer tube under external force to change the height of the jacking assembly;

[0008] The actuating assembly comprises a connecting piece arranged in the inner tube and connected with the inner tube, and a threaded rod passing through the connecting piece, the connecting piece has an external thread matched with the threaded rod, and the threaded rod rotates to drive the connecting piece to move up and down, thereby driving the inner tube to move up and down relative to the outer tube;

[0009] The driving assembly comprises a transmission piece connected with the smooth end of the threaded rod and a driving piece connected with the transmission piece, and the transmission piece can transmit the driving force of the driving piece to the threaded rod to drive the threaded rod to rotate.

[0010] Optionally, the trailer jacking device described above further comprises a height adjusting assembly connected with the outer tube, and the height adjusting assembly is configured to be capable of operating the height adjusting assembly to drive the outer tube to move in the height direction relative to the inner tube.

[0011] Optionally, the trailer jacking device described above, the height adjusting assembly comprises an adjusting rod connected with the connecting plate and a height adjusting plate fixed on the outer tube;

[0012] The height adjusting plate is provided with a plurality of limiting holes in the height direction, and the adjusting rod is clamped with the limiting holes.

[0013] Optionally, the trailer jacking device, the connecting plate comprises a bending part, and the bending part is provided with an opening;

[0014] The height adjusting assembly further comprises a gusset plate detachably connected with the height adjusting plate, and the adjusting rod is clamped with the limiting holes in sequence through the opening and the gusset plate.

[0015] Optionally, the trailer jacking device, the height adjusting assembly further comprises a first elastic member arranged between the bending part and the gusset plate.

[0016] Optionally, the trailer jacking device, the trailer jacking device further comprises a limiting handle, the connecting plate and the mounting plate are respectively provided with a first through hole and a second through hole, and the limiting handle can be clamped with the first through hole and the second through hole in sequence to relatively fix the jacking assembly and the mounting plate.

[0017] Optionally, the trailer jacking device, the limiting handle has a clamping state and a release state.

[0018] In the clamping state, the jacking assembly is relatively fixed with the mounting plate.

[0019] In the release state, the jacking assembly can rotate by a preset angle relative to the mounting plate.

[0020] Optionally, the trailer jacking device, the limiting handle comprises a limiting column clamped with the first through hole and the second through hole in sequence, a handle connected with the limiting column, and a connecting sheet connected at one end of the handle.

[0021] The limiting column is provided with a sheet-shaped fixing part at one end facing the handle, the connecting sheet has a planar connecting surface, and a fastener connects the planar connecting surface, the sheet-shaped fixing part and the handle in sequence.

[0022] Optionally, the trailer jacking device, the transmission member comprises a first umbrella-shaped gear connected with the driving member and a second umbrella-shaped gear engaged with the first umbrella-shaped gear, and the second umbrella-shaped gear is connected with the smooth end of the threaded rod.

[0023] Optionally, the trailer jacking device, the outer tube has a hexagonal cross section.

[0024] Compared with the prior art, the application has the beneficial effects that: by being provided with the inner tube and the inner tube sleeved outside the outer tube, and the inner tube being capable of moving up and down relative to the outer tube under external force to change the total height of the jacking assembly, jacking of the target object is realized, and by being provided with the height adjusting assembly connected with the outer tube, the height adjusting assembly being operated can drive the outer tube to move in the height direction relative to the inner tube, so that greater lifting stroke of the whole jacking device is realized, jacking of more length is met, and the application range is wider. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A trailer jacking device structure schematic view shown in the application;

[0026] Figure 2 A trailer jacking device structure schematic view shown in the application; Figure 1

[0027] Figure 3 A trailer jacking device structure schematic view shown in the application; Figure 1

[0028] Among them,

[0029] 1- mounting assembly, 11- mounting plate, 111- second perforation, 12- connecting plate, 121- first perforation, 122- bending part, 1221- opening;

[0030] 2- jacking assembly, 21- outer tube, 22- inner tube;

[0031] 3- actuating assembly, 31- connecting piece, 32- threaded rod, 321- smooth end;

[0032] 4- driving assembly, 41- transmission piece, 411- first umbrella-shaped tooth, 412- second umbrella-shaped tooth, 42- driving piece;

[0033] 5- limiting handle, 51- limiting column, 511- sheet-shaped fixed part, 52- handle, 53- connecting sheet, 531- connecting surface;

[0034] 6- height adjusting assembly, 61- adjusting rod, 62- height adjusting plate, 621- limiting hole, 63- backing plate, 64- first elastic piece;

[0035] 7- supporting wheel body. DETAILED DESCRIPTION

[0036] ​​Exemplary embodiments of the present application will be described in greater detail below. In the following description, numerous specific details are given to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without one or more of these specific details. In other instances, well-known features are not described in detail to avoid obscuring the present application. In this description, the terminology "couple" or "coupled" refers to an electrical or mechanical connection between two elements, and does not indicate a direct connection between these two elements.

[0037] It should be understood that when an element or layer is referred to as being "on", "adjacent", "connected" or "coupled" to another element or layer, it can be directly on, adjacent, connected or coupled to the other element or layer or one or more intervening elements or layers can be present. In contrast, when an element is referred to as being "directly on", "directly adjacent", "directly connected" or "directly coupled" to another element or layer, there are no intervening elements or layers present. It will be appreciated that, although terms such as first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present application and, similarly, a second element, component, region, layer or section discussed below could be termed a first element, component, region, layer or section without departing from the teachings of the present application.

[0038] Spatially relative terms, such as "beneath", "below", "lower", "under", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

[0039] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising", when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0040] For a thorough understanding of the present application, detailed steps and detailed structures will be presented in the following description in order to illustrate the technical solutions of the present application. The preferred embodiments of the present application are described in detail as follows, however, in addition to these detailed descriptions, the present application can also have other implementation manners.

[0041] Please refer to Figures 1-3 As shown in the drawings, the present application discloses a trailer jacking device, which comprises a mounting assembly 1, a jacking assembly 2, an actuating assembly 3 and a driving assembly 4. Among them, the mounting assembly 1 is used to mount the whole jacking device on the vehicle body, and the driving assembly 4 can drive the actuating assembly 3 to move, so as to drive the jacking assembly 2 to move, and realize jacking.

[0042] Specifically, the mounting assembly 1 comprises a mounting plate 11 and a connecting plate 12 connected with the mounting plate 11, and the jacking device is mounted on the vehicle body by screwing the screw through the mounting plate 11; the connecting plate 12 is used to connect the mounting plate 11 with the jacking assembly 2.

[0043] The jacking assembly 2 comprises an inner tube 22 and an outer tube 21 sleeved outside the inner tube 22. Among them, the outer tube 21 is connected with the connecting plate 12, and the inner tube 22 can move up and down relative to the outer tube 21 under the action of external force, so as to change the total height of the jacking assembly 2, and then realize the jacking purpose. It is worth noting that in the present embodiment, the cross section of the outer tube 21 is hexagonal, which can increase the aesthetic appearance, at the same time, the hexagonal outer tube 21 can more evenly distribute the pressure when jacking the jacking target, reduce the possibility of deformation and inclination, make the outer tube 21 more stable when bearing the weight, improve its safety and reliability in use.

[0044] The actuating assembly 3 comprises a connecting piece 31 arranged inside the inner tube 22 and connected with the inner tube 22, and a threaded rod 32 designed through the connecting piece 31, the connecting piece 31 has an external thread matched with the threaded rod 32, and the threaded rod 32 rotates to drive the connecting piece 31 to move up and down, so as to drive the inner tube 22 to move up and down relative to the outer tube 21, so as to change the height of the whole jacking assembly 2.

[0045] The driving assembly 4 comprises a transmission member 41 connected with the smooth end 321 of the threaded rod 32 and a driving member 42 connected with the transmission member 41, and the transmission member 41 can transmit the driving force of the driving member 42 to the threaded rod 32 to drive the threaded rod 32 to rotate. Specifically, in the embodiment, the driving member 42 is a driving handle connected with the transmission member 41, and the driving handle can be rotated by applying a force to the driving handle. The transmission member 41 comprises a first umbrella-shaped gear 411 connected with the driving member 42 and a second umbrella-shaped gear 412 engaged with the first umbrella-shaped gear 411, and the second umbrella-shaped gear 412 is connected with the smooth end 321 of the threaded rod 32. The operating handle 52 is driven to rotate to drive the first umbrella-shaped gear 411 to rotate, and the second umbrella-shaped gear 412 engaged with the first umbrella-shaped gear 411 is driven to rotate to drive the threaded rod 32 to rotate, and then the connecting member 31 matched with the threaded rod 32 drives the inner tube 22 to move up and down.

[0046] In an optional embodiment, the trailer jacking device further comprises a limiting handle 5, and the connecting plate 12 and the mounting plate 11 are respectively provided with a first through hole 121 and a second through hole 111, and the limiting handle 5 can pass through the first through hole 121 and the second through hole 111 in sequence to relatively fix the jacking assembly 2 and the mounting plate 11.

[0047] Specifically, the limiting handle 5 comprises a limiting column 51 passing through the first through hole 121 and the second through hole 111 in sequence, a handle 52 connected with the limiting column 51, and a connecting piece 53 connected with one end of the handle 52. The limiting column 51 is provided with a sheet-shaped fixing portion 511 at one end facing the handle 52, the connecting piece 53 has a planar connecting surface 531, and fasteners connect the planar connecting surface 531, the sheet-shaped fixing portion 511 and the handle 52 in sequence. The purpose of this arrangement is that since the connecting end of the handle 52 is circular, the contact area between the handle 52 and the connecting piece 53 provided with the sheet-shaped fixing portion 511 is small when they are connected, which is not stable enough. Therefore, by arranging the connecting piece 53, one end of which is sleeved on the circular connecting end of the handle 52, and the other end is overlapped with the sheet-shaped fixing portion 511 and then fixed by fasteners, the contact area between the two planes is large, which can improve the stability.

[0048] In the embodiment, the limiting handle 5 has a clamping state and a release state. When the limiting handle 5 is in the clamping state, the jacking assembly 2 is relatively fixed with the mounting plate 11. When the limiting handle 5 is in the release state, the jacking assembly 2 can rotate by a preset angle relative to the mounting plate 11. That is, when the limiting handle 5 is in the release state, there is no limiting between the limiting handle 5 and the mounting plate 11 at this time, and other parts except the mounting plate 11 can be rotated to any target angle, such as 90 degrees, 180 degrees, 270 degrees, etc., relative to the mounting plate 11, so as to meet various use requirements in different use environments or meet the jacking of jacking targets in different positions.

[0049] In the embodiment, the trailer jacking device further comprises a height adjusting assembly 6 connected with the outer tube 21, and the height adjusting assembly 6 is configured to be capable of operating the height adjusting assembly 6 to drive the outer tube 21 to move relative to the inner tube 22 in the height direction, so that after the inner tube 22 is driven to move by the driving assembly 4 to change the overall height of the jacking assembly 2, the outer tube 21 can also be driven to move by operating the height adjusting assembly 6 to realize secondary jacking of the jacking assembly 2, thereby increasing the overall lifting stroke of the entire jacking device, meeting more use requirements, and being more widely applicable.

[0050] Specifically, the height adjusting assembly 6 comprises an adjusting rod 61 connected with the connecting plate 12 and a height adjusting plate 62 fixed on the outer tube 21; the height adjusting plate 62 is provided with a plurality of limiting holes 621 spaced apart in the height direction, and the adjusting rod 61 can be clamped with the plurality of limiting holes 621. If it is necessary to perform secondary jacking of the jacking assembly 2, the adjusting rod 61 needs to be inserted into the lower limiting hole 621 among the plurality of limiting holes 621; if it is necessary to reduce the overall height of the jacking assembly 2, the adjusting rod 61 needs to be inserted into the upper limiting hole 621 among the plurality of limiting holes 621.

[0051] More specifically, the connecting plate 12 comprises a bent portion 122 provided with an opening 1221. The height adjusting assembly 6 further comprises a gusset plate 63 detachably connected with the height adjusting plate 62, and the adjusting rod 61 passes through the opening 1221, the gusset plate 63 and the limiting hole 621 in sequence and is clamped with the limiting hole 621. In the embodiment, the height adjusting assembly 6 further comprises a first elastic member 64 arranged between the bent portion 122 and the gusset plate 63.

[0052] The jacking device further comprises a support wheel body 7 located below the jacking assembly 2, which can support the entire jacking device to make it more convenient to adjust the position or move in the working place, and can also keep stable and vertical during use.

[0053] The above is only one specific embodiment of the present application, and any improvement made on the basis of the concept of the present application is considered to be within the protection scope of the present application.

Claims

1. A trailer lifting device, characterized in that The trailer jacking device comprises: a mounting assembly comprising a mounting plate and a connecting plate connected with the mounting plate; a jacking assembly connected with the connecting plate, comprising an inner tube and an outer tube sleeved outside the inner tube, the outer tube being connected with the connecting plate, the inner tube being capable of moving up and down relative to the outer tube under external force to change the height of the jacking assembly; an actuating assembly comprising a connecting piece arranged in the inner tube and connected with the inner tube, and a threaded rod designed through the connecting piece, the connecting piece having external threads matched with the threaded rod, the threaded rod being rotated to drive the connecting piece to move up and down, thereby driving the inner tube to move up and down relative to the outer tube; a driving assembly comprising a transmission piece connected with the smooth end of the threaded rod and a driving piece connected with the transmission piece, the transmission piece being capable of transmitting the driving force of the driving piece to the threaded rod to drive the threaded rod to rotate; wherein the trailer jacking device further comprises a height adjusting assembly connected with the outer tube, the height adjusting assembly being configured to be capable of operating the height adjusting assembly to drive the outer tube to move in the height direction relative to the inner tube.

2. The trailer lifting device of claim 1, wherein, The height adjusting assembly comprises an adjusting rod connected with the connecting plate and a height adjusting plate fixed on the outer tube. The height adjusting plate is provided with a plurality of limiting holes spaced apart in the height direction, and the adjusting rod can be clamped with the limiting holes.

3. The trailer lift device of claim 2, wherein, The connecting plate comprises a bent portion, and the bent portion is provided with an opening. The height adjusting assembly further comprises a spacer plate detachably connected with the height adjusting plate, and the adjusting rod sequentially passes through the opening, the spacer plate and the limiting hole to be clamped.

4. The trailer lift device of claim 3, wherein, The height adjusting assembly further comprises a first elastic piece arranged between the bent portion and the spacer plate.

5. The trailer lift device of claim 1, wherein, The trailer jacking device further comprises a limiting handle, the connecting plate and the mounting plate are respectively provided with a first through hole and a second through hole, and the limiting handle sequentially passes through the first through hole and the second through hole to relatively fix the jacking assembly and the mounting plate.

6. The trailer lift device of claim 5, wherein, The limiting handle has a clamping state and a release state. In the clamping state, the jacking assembly is relatively fixed with the mounting plate. In the release state, the jacking assembly can rotate by a preset angle relative to the mounting plate.

7. The trailer lift device of claim 6, wherein, The limiting handle comprises a limiting column sequentially passing through the first through hole and the second through hole, a handle connected with the limiting column, and a connecting piece connected at one end of the handle. The limiting column is provided with a sheet-shaped fixing portion at one end facing the handle, the connecting piece has a planar connecting surface, and a fastener sequentially connects the planar connecting surface, the sheet-shaped fixing portion and the handle.

8. The trailer lift device of claim 1, wherein, The transmission piece comprises a first umbrella-shaped gear connected with the driving piece and a second umbrella-shaped gear engaged with the first umbrella-shaped gear, and the second umbrella-shaped gear is connected with the smooth end of the threaded rod.

9. The trailer lift device of claim 1, wherein, The jacking device further comprises a support wheel body located below the jacking assembly.

10. The trailer lift device of claim 1, wherein, The outer tube has a hexagonal cross section.

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