Lifting rod of jack

Abstract

The hoisting rod comprises a cylindrical part with the circular section, a hoisting hole formed in the upper portion of the cylindrical part and a 7-shaped part fixedly arranged at the bottom of the cylindrical part, the 7-shaped part is provided with a vertical component and a horizontal component arranged at the top of the vertical component, a rack is arranged on one side of the vertical component, and the horizontal component is arranged on the other side of the vertical component. And the horizontal part and the vertical part form a space for accommodating the gear to be meshed with the rack. And when the lifting rod reciprocates up and down, the rack is stably meshed with the gear, the action is reliable, and swinging and clamping stagnation are avoided.

Description

Technical Field

[0001] The present application relates to the field of mechanical equipment, and in particular to a lifting rod of a jack. Background Art

[0002] Permanent magnetic lifters, also known as permanent magnetic lifters, have the characteristics of small size, strong holding force, no need for electricity, almost zero residual magnetism, and high safety factor. Most of the permanent magnetic lifters currently used are manually controlled starting switches. Personnel turn the remote control lever on the lifter to drive the internal moving magnet to rotate, and cooperate with the fixed magnet to form an attractive magnetic field. However, the crank handle of this hand-cranked permanent magnetic lifter is prone to cause the lifter to be accidentally closed when it is collided, causing lifting accidents. Although limit columns are subsequently used to fix the remote control lever, personnel are required to control the switch to lift each time during use. The lifting operation is inconvenient and affects the lifting efficiency.

[0003] At present, there are many varieties of permanent magnetic lifters, most of which are manual. In recent years, automatic products have also been launched. The existing patent for an automatic permanent magnetic lifter (patent application number 201210530327.0) is one of them. It includes a body and a rotating device provided inside it, a lifting device that can drive it to rotate is connected to the rotating device, and rotating magnetic poles, inner rotating cover plates and outer rotating cover plates are respectively provided on the rotating device and on both sides of the lifting device. The rotating magnetic pole is clamped between the inner rotating cover plate and the outer rotating cover plate, and a partition wall is provided between the lifting device and the inner rotating cover plate. Fixed magnetic poles are provided on the body and on both sides of the rotating magnetic poles. The rotating magnetic poles and the fixed magnetic poles are made of neodymium iron boron material. A rolling device is provided between the inner rotating cover plate and the partition wall or between the outer rotating cover plate and the inner wall adjacent to the body. This automatic permanent magnetic lifter has the following disadvantages: A: It has only one rotating magnetic pole, which can only swing in a small range and produce residual magnetism. B: Its transmission is a flexible belt (such as a chain) that drives the rotating magnetic pole to swing and the coil spring to reset. This has a complex structure and unreliable operation. C: The rotating magnetic pole of the magnetic lifter can only swing, so when putting down the steel plate, you can only manually hold the handles on both sides of the magnetic lifter to detach from the steel plate.

[0004] Therefore, it is urgent to provide a lifting rod of a crane, which can reciprocate up and down without swinging. Utility Model Content

[0005] The present application proposes a lifting rod of a jack, aiming to solve the problems of the above-mentioned background technology.

[0006] The present application proposes a lifting rod of a lifting device, comprising: a cylindrical portion with a circular cross-section, a lifting hole arranged above the cylindrical portion, and a 7-shaped portion fixedly arranged at the bottom of the cylindrical portion, the 7-shaped portion having a vertical component and a horizontal component arranged on the top of the vertical component, a rack is arranged on one side of the vertical component, and the horizontal component and the vertical component form a space for accommodating the engagement of the gear and the rack.

[0007] In some of the embodiments, the cylindrical portion and the 7-shaped portion are integrally arranged.

[0008] In some of the embodiments, an oil cup is mounted on the cylindrical portion for regularly adding lubricating oil.

[0009] In some of the embodiments, a copper sleeve is provided on the cylindrical portion, and the copper sleeve is used for guiding the cylindrical portion.

[0010] In some of the embodiments, a linear bearing is sleeved on the cylindrical portion.

[0011] In some of the embodiments, a vertically arranged guide groove is further included, and a positioning block adapted to the guide groove is arranged on the outer side surface of the vertical component to prevent the rack from swinging during movement.

[0012] In some of the embodiments, a dust ring is provided at the connection between the cylindrical portion and the copper sleeve.

[0013] The beneficial effects of the jacking rod in this application are as follows:

[0014] The utility model provides a lifting rod of a crane, which comprises a cylindrical part with a circular cross-section, a lifting hole arranged above the cylindrical part, and a 7-shaped part fixedly arranged at the bottom of the cylindrical part, the 7-shaped part having a vertical component and a horizontal component arranged on the top of the vertical component, a rack is arranged on one side of the vertical component, and the horizontal component and the vertical component form a space for accommodating the meshing of the gear and the rack, thereby ensuring stable meshing of the rack and the gear when the lifting rod reciprocates up and down, and reliable operation without swinging or jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a lifting rod of a jack in one embodiment of the present application;

[0016] Figure 2 For this application Figure 1 A partial structural schematic diagram of an embodiment;

[0017] Among them, 10, cylindrical part; 11, lifting hole; 12, copper sleeve; 13, dust ring; 20, 7-shaped part; 21, vertical part; 22 horizontal part; 23, rack; 24, gear; 25, guide groove; 26, positioning block. DETAILED DESCRIPTION

[0018] In conjunction with the drawings in the embodiments of the present application, the schemes in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments in the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0020] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0021] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0022] This application proposes a lifting rod for a jack, referring to Figure 1 and Figure 2 The present application proposes a lifting rod of a crane, comprising: a cylindrical portion 10 with a circular cross-section, a lifting hole 11 arranged above the cylindrical portion 10, and a 7-shaped portion 20 fixedly arranged at the bottom of the cylindrical portion 10. The cylindrical portion 10 is simple to process and is not easy to get stuck. The 7-shaped portion 20 has a vertical component 21 and a horizontal component 22 arranged on the top of the vertical component 21. A rack 23 is arranged on one side of the vertical component 21. The horizontal component 22 and the vertical component 21 form a space for accommodating the engagement of a gear 24 and the rack 23. The engagement of the gear 24 and the rack 23 is located below the lifting hole 11, with high balance and compact structure.

[0023] In some of the embodiments, the cylindrical portion 10 and the 7-shaped portion 20 are integrally arranged, which has a simple structure, is easy to seal and dustproof, and reduces the phenomenon of jamming.

[0024] In some of the embodiments, an oil cup is mounted on the cylindrical portion 10 for regularly adding lubricating oil.

[0025] In some embodiments, a copper sleeve 12 is sleeved on the cylindrical portion 10, and the copper sleeve 12 is used to guide the cylindrical portion 10. During lifting, the cylindrical portion 10 does not swing under the guidance of the copper sleeve 12, thereby ensuring vertical movement, reducing friction, and ensuring reliable operation.

[0026] In some embodiments, a linear bearing is sleeved on the cylindrical portion 10. When hoisting, the cylindrical portion 10 does not swing under the guidance of the linear bearing, thereby ensuring vertical movement, reducing friction, and ensuring reliable operation.

[0027] In some of the embodiments, a vertical guide groove 25 is further included, and a positioning block 26 adapted to the guide groove 25 is provided on the outer side of the vertical component 21 to prevent the rack 23 from swinging during movement.

[0028] In some of the embodiments, a dust ring 13 is provided at the connection between the cylindrical portion 10 and the copper sleeve 12 to adapt to underwater operations.

[0029] The beneficial effects of the jacking rod in this application are as follows:

[0030] The utility model provides a lifting rod of a crane, which comprises a cylindrical part 10 with a circular cross section, a lifting hole 11 arranged above the cylindrical part 10, and a 7-shaped part 20 fixedly arranged at the bottom of the cylindrical part 10, wherein the 7-shaped part 20 comprises a vertical component 21 and a horizontal component 22 arranged at the top of the vertical component 21, a rack 23 is arranged on one side of the vertical component 21, and the horizontal component 22 and the vertical component 21 form a space for accommodating the meshing of a gear 24 and the rack 23, thereby ensuring the stable meshing of the rack 23 and the gear 24 when the lifting rod reciprocates up and down, and the action is reliable, without swinging or jamming.

[0031] The above are only partial or preferred embodiments of the present application. Neither the text nor the drawings can limit the scope of protection of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the overall concept of the present application, or direct / indirect application in other related technical fields are included in the scope of protection of the present application.

Claims

1. A lifting rod of a jack, characterized in that: It includes a cylindrical part with a circular cross-section, a lifting hole arranged above the cylindrical part, and a 7-shaped part fixedly arranged at the bottom of the cylindrical part, the 7-shaped part has a vertical component and a horizontal component arranged on the top of the vertical component, a rack is arranged on one side of the vertical component, and the horizontal component and the vertical component form a space for accommodating the engagement of the gear and the rack.

2. The jacking rod according to claim 1, characterized in that: The cylindrical portion and the 7-shaped portion are integrally arranged.

3. The jacking rod according to claim 1, characterized in that: The cylindrical portion is provided with an oil cup for regularly adding lubricating oil.

4. The jacking rod according to claim 1, characterized in that: The cylindrical part is sleeved with a copper sleeve, and the copper sleeve is used for guiding the cylindrical part.

5. The jacking rod according to claim 1, characterized in that: A linear bearing is sleeved on the cylindrical part.

6. The jacking rod according to claim 1, characterized in that: It also includes a vertically arranged guide groove, and the outer side surface of the vertical component is provided with a positioning block adapted to the guide groove to prevent the rack from swinging when moving.

7. The jacking rod according to claim 4, characterized in that: A dust ring is arranged at the connection between the cylindrical part and the copper sleeve.

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