Novel double-pump quick lifting jack

Abstract

The utility model discloses a novel double-pump rapid lifting jack which comprises a base, a vertical outer shell is installed on one side of the top of the base, and a vertical first pump and a vertical second pump are installed on the other side of the top of the base. A first telescopic piston rod and a second telescopic piston rod are arranged in the first pump and the second pump respectively, the top of the first piston rod is rotationally connected with the bottom of the corresponding sliding block, a connector is arranged at the top of the second piston rod, and a rotary connecting lug is rotationally connected to the top of the connector. The novel double-pump rapid lifting jack is provided with a mounting block, a rotary connecting lug, a threaded sleeve, an L-shaped frame and a clamping block, separation of the mounting block and the rotary connecting lug can be achieved through rotation of the threaded sleeve, and the clamping block on the L-shaped frame can be inserted into the side wall of a second pump under the action of an adjusting threaded rod; and the operating handle can drive the first pump and the second pump to jack together and can also drive the first pump to jack independently, so that the device can carry out an accurate jacking process in a specified use scene.

Description

Technical Field

[0001] This utility model relates to the field of jack technology, specifically a novel dual-pump rapid lifting jack. Background Technology

[0002] A jack is a small lifting device that uses a rigid lifting component as its working device to lift heavy objects within a short stroke through a top support or bottom claw. Jacks are mainly used in factories, mines, transportation and other departments for vehicle repair and other lifting and supporting work. They are lightweight, sturdy, flexible and reliable, and can be carried and operated by one person.

[0003] There are many types of jacks, and the double-pump jack is one of them. A double-pump jack is a type of jack that uses a double-pump oil supply system. Generally, when in use, the pistons in the two pump bodies are raised and lowered by using a lever to drive the hand-press rod, thereby realizing the hydraulic lifting process. Compared with traditional jacks, it has a higher lifting capacity. However, the two piston mechanisms generally cannot move independently, which is not convenient for rapid lifting of high precision processes. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0004] The purpose of this invention is to provide a novel dual-pump rapid lifting jack to solve the problem mentioned in the background art that the two piston mechanisms of the existing dual-pump jacks generally cannot move independently, making it inconvenient to quickly lift high-precision lifting processes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel dual-pump rapid lifting jack, including a base,

[0006] A vertical outer shell is installed on one side of the top of the base, and vertical pump one and pump two are installed on the other side of the top of the base. A horizontal operating handle is provided above pump one and pump two. An L-shaped rod is installed on the side wall of pump one, and the L-shaped rod is rotatably connected to the end of the operating handle. A T-shaped groove is opened at the bottom of the operating handle, and two sliders are slidably installed in the T-shaped groove.

[0007] Pump 1 and Pump 2 are respectively equipped with retractable piston rod 1 and piston rod 2. The top of piston rod 1 is rotatably connected to the bottom of the corresponding side slider. The top of piston rod 2 is provided with a connector, and the top of the connector is rotatably connected with a rotating connecting ear. The bottom of the other side slider is equipped with an installation block, and the connection between the installation block and the rotating connecting ear is threaded with a threaded sleeve on the outside.

[0008] By adopting the above technical solution, during use, the connection and separation of the mounting block and the rotating connecting ear can be realized by rotating the threaded sleeve on the outside of the mounting block and the rotating connecting ear. It is convenient to use the operating handle to simultaneously drive the extension and retraction of piston rod one and piston rod two, or only drive the extension and retraction of piston rod one.

[0009] As a further embodiment of this utility model: a lifting cylinder housing is provided inside the outer shell, and hydraulic oil is provided between the outer shell and the lifting cylinder housing. A retractable plunger is installed inside the lifting cylinder housing, and a U-shaped pipeline is installed inside the base.

[0010] By adopting the above technical solution, during use, the hydraulic oil between the outer shell and the lifting cylinder shell is transported to the lifting cylinder shell under the action of pump one and pump two to achieve the hydraulic lifting effect. The U-shaped pipeline design opens during reset, so that the outer shell and the lifting cylinder shell are connected to the lifting cylinder shell, realizing the return of hydraulic oil.

[0011] As a further embodiment of this utility model: the bottoms of pump one and pump two are connected to the hydraulic oil storage space between the outer shell and the lifting cylinder shell through an oil suction pipe, and the bottoms of pump one and pump two are connected to the bottom of the lifting cylinder shell through an oil delivery pipe.

[0012] By adopting the above technical solution, during use, hydraulic oil between the outer shell and the lifting cylinder shell is transported to pump one and pump two through the oil suction pipe and the oil delivery pipe, and pump one and pump two use the oil delivery pipe to transport hydraulic oil into the lifting cylinder shell.

[0013] As a further embodiment of this utility model: a one-way valve is provided at the position where the oil suction pipe connects to pump one and pump two, and a one-way valve is provided at the position where the oil delivery pipe connects to pump one and pump two.

[0014] By adopting the above technical solution, the backflow of hydraulic oil is prevented during use through the design of check valve one and check valve two.

[0015] As a further embodiment of this utility model: an L-shaped bracket is installed on each side of the connector, and an adjusting threaded rod is threadedly connected to the bottom of the side wall of the L-shaped bracket, and a locking block is fixedly connected to the end of the adjusting threaded rod near the second pump. A limit groove is opened on the side wall of the second pump at the position aligned with the locking block.

[0016] By adopting the above technical solution, when in use, the adjustment threaded rod on the L-shaped frame rotates to drive the locking block into the limiting groove, which can limit the position of the piston rod two and prevent the pressure delivered by pump one from being transmitted to pump two, causing the plunger in the lifting cylinder housing to be unable to lift.

[0017] Compared with the prior art, the beneficial effects of this utility model are: this novel dual-pump rapid lifting jack,

[0018] The device is equipped with an installation block, a rotating connecting ear, a threaded sleeve, an L-shaped bracket, and a locking block. The installation block can be separated from the rotating connecting ear by rotating the threaded sleeve, and the locking block on the L-shaped bracket can be inserted into the side wall of pump two under the action of adjusting the threaded rod. This allows the operating handle to not only lift pump one and pump two together, but also lift pump one alone, enabling the device to perform a precise lifting process in the specified usage scenario. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention;

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This utility model Figure 2 Enlarged at point B in the middle.

[0023] In the diagram: 1. Base; 2. Outer shell; 3. Lifting cylinder shell; 4. U-shaped pipe; 5. Plunger; 6. Suction pipe; 601. One-way valve 1; 7. Oil delivery pipe; 701. One-way valve 2; 8. Pump 1; 801. Piston rod 1; 9. Pump 2; 901. Piston rod 2; 902. Connector; 10. Operating handle; 1001. T-shaped slide; 11. Slider; 12. Mounting block; 13. Rotary connecting ear; 14. Threaded sleeve; 15. L-shaped bracket; 16. Clamping block; 17. Adjusting threaded rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 This utility model provides a technical solution: a novel dual-pump rapid lifting jack, including a base 1.

[0026] A vertical outer shell 2 is installed on one side of the top of the base 1, and vertical pump 8 and pump 9 are installed on the other side of the top of the base 1. A horizontal operating handle 10 is provided above pump 8 and pump 9. An L-shaped rod is installed on the side wall of pump 8, and the L-shaped rod is rotatably connected to the end of the operating handle 10. A T-shaped groove 1001 is opened at the bottom of the operating handle 10, and two sliders 11 are slidably installed in the T-shaped groove 1001.

[0027] Pump 1 8 and Pump 2 9 are respectively provided with retractable piston rod 1 801 and piston rod 2 901. The top of piston rod 1 801 is rotatably connected to the bottom of the corresponding side slider 11. The top of piston rod 2 901 is provided with a connector 902, and the top of connector 902 is rotatably connected with a rotating connecting ear 13. The bottom of the other side slider 11 is provided with a mounting block 12. The connection between the mounting block 12 and the rotating connecting ear 13 is threaded with a threaded sleeve 14 on the outside.

[0028] Specifically, a handle may be installed at the end of the operating handle 10 away from the pump 8 to facilitate the rotation of the operating handle 10.

[0029] Please see Figure 2 Furthermore, a lifting cylinder housing 3 is provided inside the outer shell 2, and hydraulic oil is provided between the outer shell 2 and the lifting cylinder housing 3. A retractable plunger 5 is installed inside the lifting cylinder housing 3, and a U-shaped pipeline 4 is installed inside the base 1.

[0030] Specifically, a plug head is provided inside the U-shaped pipe 4. A threaded rod is rotatably connected to the plug head, and the threaded rod is threadedly connected to the base 1, which facilitates the lateral movement of the plug head, controls the opening and closing of the pipe, and facilitates the return of hydraulic oil.

[0031] Please see Figure 2 Furthermore, the bottoms of pump 8 and pump 9 are connected to the hydraulic oil storage space between the outer casing 2 and the lifting cylinder casing 3 via the oil suction pipe 6, and the bottoms of pump 8 and pump 9 are connected to the bottom of the lifting cylinder casing 3 via the oil delivery pipe 7.

[0032] Specifically, a semi-circular arc-shaped pipe is provided at the intersection of the oil suction pipe 6 and the oil delivery pipe 7 to facilitate the delivery of hydraulic oil.

[0033] Please see Figure 2 Furthermore, a one-way valve 601 is provided at the position where the oil suction pipe 6 connects to pump 8 and pump 9, and a one-way valve 701 is provided at the position where the oil delivery pipe 7 connects to pump 8 and pump 9.

[0034] Please see Figure 4Furthermore, an L-shaped bracket 15 is installed on each side of the connector 902, and an adjusting threaded rod 17 is threadedly connected to the bottom of the side wall of the L-shaped bracket 15. A locking block 16 is fixedly connected to the end of the adjusting threaded rod 17 near the pump 2 9, and a limit groove is opened on the side wall of the pump 2 9 at the position aligned with the locking block 16.

[0035] Working principle: When using this novel dual-pump rapid lifting jack, in the initial lifting stage, the piston rod 801 and piston rod 901 are simultaneously extended and retracted by the operating handle 10, realizing the rapid lifting of the plunger 5. When precise lifting is required, the installation block 12 can be separated from the rotating connecting ear 13 by rotating the threaded sleeve 14. Furthermore, the locking block 16 on the L-shaped frame 15 can be inserted into the side wall of the second pump 9 under the action of the adjusting threaded rod 17, so that the operating handle 10 drives the first pump 8 to lift independently. After lifting, the hydraulic oil in the lifting cylinder housing 3 is returned to the space between the outer shell 2 and the lifting cylinder housing 3 by opening the plug in the U-shaped pipe 4, so that the device can perform a precise lifting process in the specified application scenario. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0036] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel dual-pump rapid lifting jack, comprising a base (1), characterized in that: A vertical outer shell (2) is installed on one side of the top of the base (1), and vertical pump one (8) and pump two (9) are installed on the other side of the top of the base (1). A horizontal operating handle (10) is provided above the pump one (8) and pump two (9). An L-shaped rod is installed on the side wall of the pump one (8), and the L-shaped rod is rotatably connected to the end of the operating handle (10). A T-shaped groove (1001) is opened at the bottom of the operating handle (10), and two sliders (11) are slidably installed in the T-shaped groove (1001). The pump 1 (8) and pump 2 (9) are respectively provided with a retractable piston rod 1 (801) and piston rod 2 (901). The top of the piston rod 1 (801) is rotatably connected to the bottom of the corresponding side slider (11). The top of the piston rod 2 (901) is provided with a connector (902), and the top of the connector (902) is rotatably connected with a rotating connecting ear (13). The bottom of the other side slider (11) is equipped with an installation block (12), and a threaded sleeve (14) is threadedly connected to the outside of the connection between the installation block (12) and the rotating connecting ear (13).

2. The novel dual-pump rapid lifting jack according to claim 1, characterized in that: The outer shell (2) is provided with a lifting cylinder housing (3), and hydraulic oil is provided between the outer shell (2) and the lifting cylinder housing (3). A retractable plunger (5) is installed in the lifting cylinder housing (3), and a U-shaped pipe (4) is installed in the base (1).

3. A novel dual-pump rapid lifting jack according to claim 2, characterized in that: The bottoms of pump one (8) and pump two (9) are connected to the hydraulic oil storage space between the outer shell (2) and the lifting cylinder shell (3) through the oil suction pipe (6), and the bottoms of pump one (8) and pump two (9) are connected to the bottom of the lifting cylinder shell (3) through the oil delivery pipe (7).

4. A novel dual-pump rapid lifting jack according to claim 3, characterized in that: One-way valve 1 (601) is provided at the position where the oil suction pipe (6) connects to pump 1 (8) and pump 2 (9), and one-way valve 2 (701) is provided at the position where the oil delivery pipe (7) connects to pump 1 (8) and pump 2 (9).

5. A novel dual-pump rapid lifting jack according to claim 1, characterized in that: An L-shaped bracket (15) is installed on each side of the connector (902), and an adjusting threaded rod (17) is threadedly connected to the bottom of the side wall of the L-shaped bracket (15). A locking block (16) is fixedly connected to the end of the adjusting threaded rod (17) near the pump (9). A limiting groove is opened on the side wall of the pump (9) at the position aligned with the locking block (16).

Images