Jack with adjustable safety support

Abstract

The jack with the adjustable safety support comprises a jack body, the jack body comprises a bottom frame, a tray, a cargo boom and a handle, the bottom frame comprises a left wall plate, a right wall plate, a front wheel and a rear wheel, the jack further comprises the adjustable safety support on the abdomen portion of the cargo boom, and the adjustable safety support comprises a support body, a butterfly nut and a support positioning buckle. The butterfly nut penetrates through the bracket positioning buckle and then fixedly arranges the bracket body on the belly part of the cargo boom; the support body comprises a screw, a middle sleeve, a lower sleeve and a support base, and the support base is arranged on the lower portion of the lower sleeve. The upper end of the screw rod is hinged to the tray seat through the tray seat pin shaft, the lower end of the screw rod is sleeved with the middle sleeve and can move up and down along the middle sleeve, the middle sleeve is sleeved with the lower sleeve, the middle sleeve and the lower sleeve are positioned and fixed through the pin shaft when adjusted to proper positions, and at the moment, the support base is just flush with the horizontal ground.

Description

Technical Field

[0001] The utility model relates to a jack with an adjustable safety bracket, belonging to the technical field of jacks. Background Art

[0002] After the existing hydraulic jack lifts a heavy object, when the jack continuously supports the heavy object, due to certain risks of the hydraulic jack, there is a situation of hydraulic failure, and the heavy object may drop out of control, thus there are safety hazards. Content of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a jack with an adjustable safety bracket.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A jack with an adjustable safety bracket, comprising a jack body. The jack body includes a chassis, a tray, a boom and a handle. The chassis includes a left wallboard, a right wallboard, a front wheel and a rear wheel, and the left wallboard and the right wallboard are arranged opposite to each other; the rear part of the boom is pivotally connected between the left and right wallboards through a boom shaft, and the front part is provided with the tray; the handle is arranged at the rear part of the chassis through a push button and is connected to the oil control part of an oil pump component located on the chassis. The tray is arranged at the front part of the boom through a tray seat. It is characterized in that it further includes an adjustable safety bracket. The boom has a belly facing the chassis, and the adjustable safety bracket is located in the belly of the boom; wherein:

[0006] The adjustable safety bracket includes a bracket body, a wing nut and a bracket positioning buckle. The bracket body is fixed on the belly of the boom after the wing nut passes through the bracket positioning buckle.

[0007] Further, the bracket body includes a screw rod, a middle section sleeve, a lower section sleeve and a bracket base. The lower part of the lower section sleeve is provided with the bracket base; the upper end of the screw rod is hinged on the tray seat through a tray seat pin shaft, the lower end of the screw rod is sleeved in the middle section sleeve and can move up and down along the middle section sleeve. The middle section sleeve is sleeved in the lower section sleeve, and a plurality of first pin holes are spaced from top to bottom on the lower section sleeve, and a second pin hole is provided on the middle section sleeve. When the middle section sleeve and the lower section sleeve are adjusted to a proper position, they are fixed by pin shaft positioning. At this time, the bracket base is exactly flush with the horizontal ground.

[0008] Further, the tray and the tray seat are fixedly connected by tray screws.

[0009] Further, threads adapted to the screw are provided on the inner wall of the middle section sleeve, and a press riveting is provided between the screw and the inner wall of the middle section sleeve to prevent the threads from coming off.

[0010] Compared with the prior art, the beneficial effects of the present utility model are embodied in:

[0011] 1. When the jack of the present utility model is in the retracted state or the jack has not lifted the heavy object to the required height, the adjustable safety bracket can be stored in the abdomen of the boom and fixed to the boom by the bracket positioning buckle and the wing nut, without affecting the use and storage of the jack.

[0012] 2. When the jack of the present utility model lifts the heavy object to the required height, the bracket positioning buckle can be moved to one side by loosening the wing nut. At this time, the adjustable safety bracket is in a vertical state due to the action of gravity. After removing the pin shaft, the middle section sleeve and the lower section sleeve are extended to the appropriate position, and then the pin shaft is inserted. Rotate the bracket base so that the base of the entire adjustable safety bracket just abuts against the horizontal ground, thereby playing a physical support role for the heavy object. No safety accident will occur whether the hydraulic system of the hydraulic jack fails or not. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic view of the retracted state of the adjustable safety bracket of the present utility model.

[0014] Figure 2 is Figure 1 the top view of

[0015] Figure 3 is a schematic view of the working state of the adjustable safety bracket of the present utility model.

[0016] Figure 4 is Figure 3 the top view of DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will describe in detail the specific embodiments of the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining and illustrating the embodiments of the present utility model, and are not used to limit the embodiments of the present utility model.

[0018] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0020] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0021] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0023] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0024] The present utility model will be described in detail below with reference to the drawings and in conjunction with exemplary embodiments.

[0025] Referring to Figures 1 to 4 , a jack with an adjustable safety bracket of the present utility model includes a jack body. The jack body includes a chassis 1, a tray, a lifting arm 2, and a handle. The chassis 1 includes a left wall panel, a right wall panel, a front wheel, and a rear wheel. The left wall panel and the right wall panel are arranged opposite to each other; the rear part of the lifting arm 2 is pivotally connected between the left and right wall panels through a lifting arm shaft 21, and the tray 3 is installed at the front part; the handle is arranged at the rear part of the chassis 1 through a press handle and is connected to the oil control part of an oil pump component located on the chassis 1. The tray 3 is arranged at the front part of the lifting arm 2 through a tray seat 32. It further includes an adjustable safety bracket. The lifting arm 2 has a belly facing the chassis, and the adjustable safety bracket is located in the belly of the lifting arm 2; wherein:

[0026] The adjustable safety bracket includes a bracket body, a wing nut 4, and a bracket positioning buckle 5. The wing nut 4 passes through the bracket positioning buckle 5 and then fixes the bracket body on the belly of the lifting arm 2.

[0027] In one embodiment, the bracket body includes a screw rod 8, a middle section sleeve 9, a lower section sleeve 10, and a bracket base 11. The bracket base 11 is arranged at the lower part of the lower section sleeve 10; the upper end of the screw rod 8 is hinged to the tray seat 32 through a tray seat pin shaft 33. The lower end of the screw rod 8 is sleeved in the middle section sleeve 9 and can move up and down along the middle section sleeve 9. The middle section sleeve 9 is sleeved in the lower section sleeve 10, and a plurality of first pin holes are spaced from top to bottom on the lower section sleeve 10. A second pin hole is provided on the middle section sleeve 9. When the middle section sleeve 9 and the lower section sleeve 10 are adjusted to a suitable position, they are positioned and fixed through a pin shaft 7. At this time, the bracket base 11 is exactly flush with the horizontal ground.

[0028] In one embodiment, the tray 3 and the tray seat 32 are fixedly connected through a tray screw 31.

[0029] In one embodiment, threads adapted to the screw rod 8 are provided on the inner wall of the middle section sleeve 9, and a press riveting 12 is provided between the screw rod 8 and the inner wall of the middle section sleeve 9 to prevent the threads from coming off.

[0030] In one embodiment, the angular reinforcing plate 6 is disposed inside the boom 2 and is welded to the tray seat pin shaft 33 at the front end, which can strengthen the boom 2 and can limit the left and right positions of the screw rod 8. At the same time, the wing nut 4 and the bracket positioning buckle 5 are adapted to the threads on the angular reinforcing plate 6.

[0031] When the jack of the present utility model is in the retracted state or the jack has not lifted the heavy object to the required height, the adjustable safety bracket is stored in the abdomen of the boom and is fixed to the boom by the bracket positioning buckle and the wing nut.

[0032] When the jack of the present utility model lifts the heavy object to the required height, after loosening the wing nut, the bracket positioning buckle can be moved to one side. At this time, the adjustable safety bracket is in a vertical state due to the action of gravity. After removing the pin shaft, the middle section sleeve and the lower section sleeve are extended to a suitable position, and then the pin shaft is inserted, and the bracket base is rotated so that the base of the entire adjustable safety bracket just abuts against the horizontal ground jack post.

[0033] After use, the steps for storing the adjustable safety bracket are opposite to the opening steps.

[0034] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A jack with an adjustable safety bracket, comprising a jack body, the jack body comprising a base frame, a tray, a lifting arm and a handle, the base frame comprising a left wall panel, a right wall panel, a front wheel and a rear wheel, the left wall panel and the right wall panel are arranged opposite to each other; the rear part of the lifting arm is pivotally connected between the left and right wall panels through a lifting arm shaft, and the front part is equipped with the tray; the handle is arranged at the rear part of the base frame through a press handle and is connected to the oil control part of the oil pump component located on the base frame, and the tray is arranged at the front part of the lifting arm through a tray seat, characterized in that: Also included is an adjustable safety bracket, the boom having a belly facing the base frame, the adjustable safety bracket being located on the belly of the boom; wherein: The adjustable safety bracket comprises a bracket body, a butterfly nut and a bracket positioning buckle. The butterfly nut passes through the bracket positioning buckle to fix the bracket body on the belly of the crane arm.

2. A jack with an adjustable safety bracket as claimed in claim 1, characterized in that: The bracket body includes a screw rod, a middle section sleeve, a lower section sleeve and a bracket base, and the bracket base is arranged at the lower part of the lower section sleeve; the upper end of the screw rod is hinged on the pallet seat through a pallet seat pin shaft, and the lower end of the screw rod is sleeved in the middle section sleeve and can move up and down along the middle section sleeve, the middle section sleeve is sleeved in the lower section sleeve, and the lower section sleeve is provided with a plurality of first pin shaft holes spaced from top to bottom, and the middle section sleeve is provided with a second pin shaft hole, and when the middle section sleeve and the lower section sleeve are adjusted to a suitable position, they are positioned and fixed by the pin shaft, and at this time, the bracket base is just flush with the horizontal ground.

3. A jack with an adjustable safety bracket as claimed in claim 1, characterized in that: The tray and the tray seat are fixedly connected by tray screws.

4. A jack with an adjustable safety bracket as claimed in claim 2, characterized in that: The inner wall of the middle sleeve is provided with a thread matched with the screw rod, and a compression riveting is provided between the screw rod and the inner wall of the middle sleeve to prevent the thread from coming out.

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