Portable quick jack

Abstract

The utility model discloses a portable quick jack which comprises a movable base, a hydraulic assembly, a transmission arm and a bracket, the transmission arm is rotationally arranged in the movable base, one end of the transmission arm is connected with the hydraulic assembly, the other end of the transmission arm is connected to the bottom of the bracket, and the movable base comprises two symmetrically-arranged mounting plates. The middle part of the transmission arm is rotationally connected to the tops of the two mounting plates through a first rotating shaft; the walking wheel assemblies are located at the left end and the right end of the outer side of the mounting plate of the movable base; the movable walking wheel assembly is arranged, and the whole jack can be dragged to move through a pressing handle; and when the hub moves to the position needing to be supported, the hub can automatically retract, and the hub is supported through the base and cannot slide.

Description

Technical Field

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

[0002] A jack is a small and light lifting equipment that uses a rigid lifting piece as a working device and can lift heavy objects within a small stroke of a top support or a bottom support claw.

[0003] For example, the patent with authorization announcement number CN218453925U discloses a double-pump fast multifunctional jack with adjustable support area, including a base shell, the four corners of the bottom of the base shell are connected to walking wheels by bolts, the left and right sides of the base shell are penetrated by support mechanisms that are slidably connected, the rear side of the base shell is welded with a positioning mechanism, the top of the base shell is connected to the double-pump jack by bolts, and the middle part of the rear side of the double-pump jack is connected to a connecting mechanism by bolts.

[0004] The above patent has the advantages of conveniently adjusting the supporting area of ​​the base, increasing the contact area between the base and the supporting surface, making the support more stable, convenient to carry, and reducing the labor intensity of personnel; however, the disadvantage of the above patent is that it is too inconvenient to carry.

[0005] Therefore, it is necessary for us to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of the utility model is to provide a portable quick jack to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A portable quick jack comprises a mobile base, a hydraulic assembly, a transmission arm and a bracket, wherein the transmission arm is rotatably arranged in the mobile base, one end of the transmission arm is connected to the hydraulic assembly, and the other end is connected to the bottom of the bracket, the mobile base comprises two symmetrically arranged mounting plates, and the middle part of the transmission arm is rotatably connected to the top of the two mounting plates through a first rotating shaft; the mobile base also comprises a walking wheel assembly, and the walking wheel assembly is located at the left and right ends of the outer side of the mounting plate of the mobile base; the walking wheel assembly comprises a main wheel frame, a secondary wheel frame and two adjusting bolts, the middle part of the secondary wheel frame is rotatably connected to the bottom of the main wheel frame through a rotating shaft, the bottom end of the secondary wheel frame is rotatably connected to a wheel hub through a rotating shaft, the top of the secondary wheel frame is rotatably connected to a first positioning rod, and the top of the main wheel frame is rotatably connected to a second positioning rod, the adjusting bolt comprises a screw and a nut, the screw passes through the first positioning rod and the second positioning rod in sequence, the screw is slidably arranged in a through hole on the first positioning rod and the second positioning rod for the screw to pass through, the head of the screw is threadedly connected to a nut, and a compression spring is also sleeved on the screw, and the two ends of the compression spring are respectively abutted against the second positioning rod and the nut.

[0009] Furthermore, the hydraulic assembly includes a hydraulic oil pump, the power end of the hydraulic oil pump is hinged to the right bottom of the transmission arm; the right end of the hydraulic oil pump is hinged to the right end of the movable base, and the top of the hydraulic oil pump is also rotatably connected to a lever, and the bottom of the lever abuts against the top end surface of the pump core of the hydraulic oil pump.

[0010] Furthermore, the bracket includes a bracket body, a rotatable tray is provided on the top of the bracket body, the middle part of the bracket body is hinged to the top of the transmission arm, one end of the connecting arm is hinged to the bottom of the bracket body, and the other end of the connecting arm is rotatably connected to the inner side of the mounting plate.

[0011] Furthermore, the travel wheel assembly also includes a mounting seat, which is fixedly connected to the side of the mounting plate, and the main wheel frame is fixedly mounted on the bottom of the mounting seat.

[0012] Furthermore, the lowest point of the bottom of the main wheel frame is flush with the lowest point of the bottom of the mounting plate.

[0013] Furthermore, the lowest point of the bottom of the main wheel frame is higher than the lowest point of the bottom of the mounting plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] When the utility model is used, the movable running wheel assembly can be dragged by pressing the hand to move the entire jack; when it moves to a position where support is required, the wheel hub can automatically retract and be supported by the base without sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic diagram of the structure of a portable quick jack.

[0017] Figure 2 A top view of a portable quick jack.

[0018] Figure 3 The figure is a front view of a portable quick jack.

[0019] Figure 4 The utility model is a cross-sectional view of a portable quick jack.

[0020] Figure 5 The present invention is a schematic diagram of the structure of a traveling wheel assembly in a portable rapid jack.

[0021] Figure 6 The present invention is a front view of a traveling wheel assembly in a portable quick jack.

[0022] Figure 7 for Figure 6 Sectional view along AA direction. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0024] See also Figure 1-4 A portable quick jack includes a mobile base 1, a hydraulic assembly 2, a transmission arm 3 and a bracket 4.

[0025] The transmission arm 3 is rotatably arranged in the mobile base 1, one end of the transmission arm 3 is connected to the hydraulic assembly 2, and the other end is connected to the bottom of the bracket 4. The mobile base 1 includes two symmetrically arranged mounting plates 101, and the middle part of the transmission arm 3 is rotatably connected to the top of the two mounting plates 101 through a first rotating shaft 301. The hydraulic assembly 2 includes a hydraulic oil pump 201, and the power end of the hydraulic oil pump 201 is hinged to the right bottom of the transmission arm 3; the right end of the hydraulic oil pump 201 is hinged to the right end of the mobile base 1, and the top of the hydraulic oil pump 201 is also rotatably connected with a pressing hand 202, and the bottom of the pressing hand 202 abuts against the top end surface of the pump core of the hydraulic oil pump 201.

[0026] The bracket 4 includes a bracket body 401, a rotatable tray 402 is provided on the top of the bracket body 401, the middle of the bracket body 401 is hinged to the top of the transmission arm 3, one end of a connecting arm 403 is hinged to the bottom of the bracket body 401, and the other end of the connecting arm 403 is rotatably connected to the inner side of the mounting plate 101;

[0027] The above mechanism is basically similar to the prior art. The innovation of this solution is that Figure 5-6 , equipped with a movable walking wheel assembly 5,

[0028] The travel wheel assembly 5 is located at the left and right ends of the outer side of the mounting plate 101 of the mobile base 1;

[0029] The travel wheel assembly 5 includes a main wheel frame 501, a secondary wheel frame 502 and two adjusting bolts 510.

[0030] The middle part of the secondary wheel frame 502 is rotatably connected to the bottom of the main wheel frame 501 via a rotating shaft, the bottom end of the secondary wheel frame 502 is rotatably connected to the hub 503 via a rotating shaft, the top of the secondary wheel frame 502 is rotatably connected to the first positioning rod 504, and the top of the main wheel frame 501 is rotatably connected to the second positioning rod 505. The adjusting bolt 510 includes a screw 506 and a nut 507. The screw 506 passes through the first positioning rod 504 and the second positioning rod 505 in sequence. The screw 506 is slidably arranged in the through holes on the first positioning rod 504 and the second positioning rod 505 for the screw 506 to pass through. The head of the screw 506 is threadedly connected to the nut 507. A compression spring 508 is also sleeved on the screw 506, and the two ends of the compression spring 508 are respectively abutted against the second positioning rod 505 and the nut 507.

[0031] The travel wheel assembly 5 further includes a mounting seat 509, which is fixedly connected to the side of the mounting plate 101, and the main wheel frame 501 is fixedly mounted on the bottom of the mounting seat 509.

[0032] At the same time, the lowest point of the bottom of the main wheel frame 501 is flush with the lowest point of the bottom of the mounting plate 101;

[0033] One of the traveling wheel assemblies 5 is provided with two compression springs 508, and four traveling wheel assemblies 5 are provided with eight compression springs 508. In the present embodiment, the elastic force provided by a total of eight compression springs 508 is transmitted through the auxiliary wheel frame 502. The supporting force provided by the eight compression springs 508 should be greater than the dead weight of the portable quick jack, so that the bottom of the wheel hub can pass over the lowest point of the bottom of the mounting plate 101.

[0034] When the utility model is used, the entire jack can be moved by dragging the handle 202. When it moves to the position where support is required, the handle 202 is rotated to make the bracket 4 rise. At this time, the bracket receives the force of the supported object, and then first compresses the compression spring 508 to contract, so that the wheel hub rotates and rises to be flush with the bottom of the mounting plate 101. At this time, it is mainly supported by the base and will not slide.

[0035] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "connection" and the like should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

Claims

1. A portable quick jack, comprising a mobile base, a hydraulic assembly, a transmission arm and a bracket, characterized in that: The transmission arm is rotatably arranged in the mobile base, one end of the transmission arm is connected to the hydraulic assembly, and the other end is connected to the bottom of the bracket, the mobile base includes two symmetrically arranged mounting plates, and the middle part of the transmission arm is rotatably connected to the top of the two mounting plates through a first rotating shaft; it also includes a walking wheel assembly, and the walking wheel assembly is located at the left and right ends of the outer side of the mounting plate of the mobile base; the walking wheel assembly includes a main wheel frame, a secondary wheel frame and two adjusting bolts, the middle part of the secondary wheel frame is rotatably connected to the bottom of the main wheel frame through a rotating shaft, the bottom end of the secondary wheel frame is rotatably connected to the wheel hub through the rotating shaft, the top of the secondary wheel frame is rotatably connected to the first positioning rod, and the top of the main wheel frame is rotatably connected to the second positioning rod, the adjusting bolt includes a screw and a nut, the screw passes through the first positioning rod and the second positioning rod in turn, the screw is slidably arranged in the through hole on the first positioning rod and the second positioning rod for the screw to pass through, the head of the screw is threadedly connected with a nut, and a compression spring is also sleeved on the screw, and the two ends of the compression spring are respectively abutted against the second positioning rod and the nut.

2. A portable fast jack according to claim 1, characterized in that: The hydraulic assembly includes a hydraulic oil pump, the power end of the hydraulic oil pump is hinged to the right bottom of the transmission arm; the right end of the hydraulic oil pump is hinged to the right end of the mobile base, and the top of the hydraulic oil pump is also rotatably connected to a lever, and the bottom of the lever abuts against the top end surface of the pump core of the hydraulic oil pump.

3. A portable fast jack according to claim 1, characterized in that: The bracket includes a bracket body, a rotatable tray is provided on the top of the bracket body, the middle of the bracket body is hinged to the top of the transmission arm, one end of the connecting arm is hinged to the bottom of the bracket body, and the other end of the connecting arm is rotatably connected to the inner side of the mounting plate.

4. A portable fast jack according to claim 1, characterized in that: The walking wheel assembly also includes a mounting seat, which is fixedly connected to the side of the mounting plate, and the main wheel frame is fixedly installed at the bottom of the mounting seat.

5. A portable fast jack according to claim 1, characterized in that: The lowest point of the bottom of the main wheel frame is flush with the lowest point of the bottom of the mounting plate.

6. A portable fast jack according to claim 1, characterized in that: The lowest point of the bottom of the main wheel frame is higher than the lowest point of the bottom of the mounting plate.

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