Hydraulic telescopic jack

Abstract

The utility model relates to the technical field of jacks, in particular to a hydraulic telescopic jack which comprises a connecting seat, the upper end of the connecting seat is fixedly connected with a jack body, the telescopic end of the jack body is fixedly connected with an ejector rod, and the upper end of the ejector rod is fixedly connected with a lifting device. According to the hydraulic telescopic jack, through the arrangement of the lifting device and the top plate, the contact area between the ejector rod and an ejected object can be increased, the ejection stability is improved, when the ejected object is loose, a second clamping plate is inserted into a second sliding groove, a first clamping plate is inserted into a first sliding groove, a rotating wheel is rotated to enable a rotating rod to rotate, and therefore the ejected object is loosened. As the rotating rod is in threaded connection with the second clamping plate and the first clamping plate, the rotating rod rotates to enable the second clamping plate and the first clamping plate to be close to each other to clamp the jacked object, so that the jacked object is prevented from shaking and being unstable, and the stability is improved.

Description

Technical Field

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

[0002] A jack is a tool used to lift heavy objects. It consists of a bearing platform and a rod that can be lifted. When the rod is pushed or rotated, it will lift or support the heavy object through the lever principle, causing the height of the heavy object to change. Jacks are commonly used in occasions such as vehicle repair and construction sites where heavy objects need to be lifted or supported. During the use of existing jacks, there are at least the following drawbacks: during the use of existing jacks, the contact position between the jack and the object to be lifted often tends to slide, resulting in offset during lifting, and further leading to safety accidents or the dropping of the object to be lifted. Therefore, we have developed a hydraulic telescopic jack. Content of the Utility Model

[0003] The main purpose of the utility model is to provide a hydraulic telescopic jack, which can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A hydraulic telescopic jack includes a connecting seat. A jack body is fixedly connected to the upper end of the connecting seat. A jacking rod is fixedly connected to the telescopic end of the jack body. A lifting device is fixedly connected to the upper end of the jacking rod.

[0006] Preferably, the lifting device includes a top plate. A second clamping plate is slidably connected to the left part of the upper end of the top plate. A first clamping plate is slidably connected to the right part of the upper end of the top plate. The first clamping plate and the second clamping plate are commonly threadedly connected to a rotating rod. A limiting plate is fixedly connected to the left end of the rotating rod. A rotating wheel is fixedly connected to the right end of the rotating rod. A second thread groove is formed in the left part of the outer surface of the rotating rod. A first thread groove is formed in the right part of the outer surface of the rotating rod.

[0007] Preferably, both the first clamping plate and the second clamping plate are in an "L" shape structure. Thread groove covers are formed at the right ends of both the first clamping plate and the second clamping plate.

[0008] Preferably, a second sliding groove is formed in the left part of the upper end of the top plate. A first sliding groove is formed in the right part of the upper end of the top plate.

[0009] Preferably, the second sliding groove is slidably connected to the second clamping plate. The first sliding groove is slidably connected to the first clamping plate.

[0010] Preferably, the lower end of the top plate is fixedly connected to the upper end of the jacking rod. The rotating rod is not in contact with the jacking rod and the jack body.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] By setting up the lifting device, the top plate can increase the contact area between the ejector rod and the object to be ejected, improving the stability of the jacking. When the object to be ejected is relatively loose, insert the second clamping plate into the second chute, insert the first clamping plate into the first chute, and rotate the rotating wheel to make the rotating rod rotate. Since the rotating rod is threadedly connected to the second clamping plate and the first clamping plate, the rotation of the rotating rod will cause the second clamping plate and the first clamping plate to approach each other, clamping the object to be ejected, thereby preventing the object to be ejected from shaking unstably and improving the stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of a hydraulic telescopic jack of the utility model;

[0014] Figure 2 is a schematic diagram of the overall structure of the lifting device of a hydraulic telescopic jack of the utility model;

[0015] Figure 3 is a schematic diagram of the overall structure of the first clamping plate of a hydraulic telescopic jack of the utility model;

[0016] Figure 4 is a schematic diagram of the overall structure of the top plate of a hydraulic telescopic jack of the utility model.

[0017] In the figure: 1, connecting seat; 2, jack body; 3, ejector rod; 4, lifting device; 41, top plate; 42, rotating wheel; 43, first clamping plate; 44, first thread groove; 45, rotating rod; 46, second thread groove; 47, limiting plate; 48, second clamping plate; 411, first chute; 412, second chute; 431, thread groove cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the technical means, creative features, achieved purposes and functions of the utility model easy to understand, the utility model will be further described below in conjunction with specific embodiments.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and 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, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "connection", etc. 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. 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.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0022] A hydraulic telescopic jack, comprising a connection seat 1, the upper end of the connection seat 1 is fixedly connected with a jack body 2, the telescopic end of the jack body 2 is fixedly connected with a top rod 3, and the upper end of the top rod 3 is fixedly connected with a lifting device 4.

[0023] In this embodiment, the lifting device 4 includes a top plate 41, a second clamping plate 48 is slidably connected to the left part of the upper end of the top plate 41, a first clamping plate 43 is slidably connected to the right part of the upper end of the top plate 41, the first clamping plate 43 and the second clamping plate 48 are commonly threadedly connected with a rotating rod 45, a limiting plate 47 is fixedly connected to the left end of the rotating rod 45, a rotating wheel 42 is fixedly connected to the right end of the rotating rod 45, a second thread groove 46 is formed in the left part of the outer surface of the rotating rod 45, and a first thread groove 44 is formed in the right part of the outer surface of the rotating rod 45; both the first clamping plate 43 and the second clamping plate 48 are in an "L" shape, and thread groove covers 431 are formed at the right ends of both the first clamping plate 43 and the second clamping plate 48; a second sliding groove 412 is formed in the left part of the upper end of the top plate 41, and a first sliding groove 411 is formed in the right part of the upper end of the top plate 41; the second sliding groove 412 is slidably connected with the second clamping plate 48, and the first sliding groove 411 is slidably connected with the first clamping plate 43; the lower end of the top plate 41 is fixedly connected with the upper end of the top rod 3, the rotating rod 45 is not in contact with both the top rod 3 and the jack body 2, and during the up and down movement of the lifting device 4, neither the first clamping plate 43, the rotating rod 45 nor the second clamping plate 48 will contact the connection seat 1, avoiding breakage of the rotating rod 45.

[0024] It should be noted that the present utility model is a hydraulic telescopic jack. During use, place the jack under the object to be lifted. If the object to be lifted is prone to shaking, insert the second clamping plate 48 into the second sliding groove 412, insert the first clamping plate 43 into the first sliding groove 411, and rotate the rotating wheel 42 to make the rotating rod 45 rotate. Since the rotating rod 45 is threadedly connected with the second clamping plate 48 and the first clamping plate 43, the rotation of the rotating rod 45 will cause the second clamping plate 48 and the first clamping plate 43 to approach each other, clamping the object to be lifted, thereby avoiding the shaking and instability of the object to be lifted, improving stability, and then operating the jack body 2 to work, so that the jack body 2 pushes the top rod 3 to move upward. As the movement continues, the top plate 41 contacts the object to be lifted and lifts the object to be lifted.

[0025] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will also have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A hydraulic telescopic jack, comprising a connecting seat (1), characterized in that: The upper end of the connecting seat (1) is fixedly connected to a jack body (2), the telescopic end of the jack body (2) is fixedly connected to a push rod (3), and the upper end of the push rod (3) is fixedly connected to a lifting device (4); The lifting device (4) comprises a top plate (41), the left upper end of the top plate (41) is slidably connected to a second clamping plate (48), the right upper end of the top plate (41) is slidably connected to a first clamping plate (43), the first clamping plate (43) and the second clamping plate (48) are threadedly connected to a rotating rod (45), the left end of the rotating rod (45) is fixedly connected to a limiting plate (47), the right end of the rotating rod (45) is fixedly connected to a rotating wheel (42), the left outer surface of the rotating rod (45) is provided with a second thread groove (46), and the right outer surface of the rotating rod (45) is provided with a first thread groove (44).

2. A hydraulic telescopic jack according to claim 1, characterized in that: The first clamping plate (43) and the second clamping plate (48) are both L-shaped structures, and the right ends of the first clamping plate (43) and the second clamping plate (48) are both provided with a threaded groove cover (431).

3. A hydraulic telescopic jack according to claim 1, characterized in that: A second slide groove (412) is formed at the left upper end of the top plate (41), and a first slide groove (411) is formed at the right upper end of the top plate (41).

4. A hydraulic telescopic jack according to claim 3, characterized in that: The No. 2 slide groove (412) is slidably connected to the No. 2 clamping plate (48), and the No. 1 slide groove (411) is slidably connected to the No. 1 clamping plate (43).

5. The hydraulic telescopic jack according to claim 1, characterized in that: The lower end of the top plate (41) is fixedly connected to the upper end of the top rod (3), and the rotating rod (45) is not in contact with the top rod (3) or the jack body (2).

Images